WO2018216681A1

WO2018216681A1 - Nanofiber manufacturing device and head used for same

Info

Publication number: WO2018216681A1
Application number: PCT/JP2018/019627
Authority: WO
Inventors: 池ヶ谷　守彦; 孝嗣越前谷; 曽田　浩義
Original assignee: エム・テックス株式会社
Priority date: 2017-05-22
Filing date: 2018-05-22
Publication date: 2018-11-29
Also published as: RU2019142697A; MY194530A; RU2760806C2; SG10202110627TA; JP2018197401A; EP3633083A1; JP6964861B2; RU2019142697A3; CA3064728A1; AU2018273416A1; CN111542653A; KR20200038428A; ZA201907708B; EP3633083A4; TW201908546A; US20200173057A1

Abstract

Provided are: a nanofiber manufacturing device which can be manufactured by a cutting process and effectively carry a molten resin on a gas flow; and a head used for the nanofiber manufacturing device. This head (20) for a nanofiber manufacturing device (1) has: a raw material outlet surface (22) in which a raw material flow passage (2) for discharging a liquid-phase raw material is formed; and a gas outlet surface (23) which is disposed so as to form an angle α (where 0<α≤90 degrees) with respect to the raw material outlet surface (22) and in which a gas flow passage (26) for discharging gas is formed. In addition, the raw material flow passage (25) is formed perpendicular to the raw material outlet surface (22), the gas flow passage (26) is formed perpendicular to the gas outlet surface (23), and the raw material flow passage (25) and the gas flow passage (26) are disposed so that gas jetted from the gas flow passage (26) is sprayed and attached to the liquid-phase raw material discharged from the raw material flow passage (25).

Description

Nanofiber manufacturing apparatus and head used therefor

The present invention relates to a nanofiber manufacturing apparatus and a head used in the nanofiber manufacturing apparatus.

A conventional nonwoven fabric manufacturing apparatus is disclosed in Patent Document 1. As shown in FIG. 40, the nonwoven fabric manufacturing apparatus includes an extruder 915 that extrudes molten resin, a blower 916, and a heating device 917 that heats air from the blower 916. The nonwoven fabric manufacturing apparatus further includes a melt blow unit 911 as a head for spinning the molten resin from the extruder 915 in the form of a filament and blowing hot air supplied from the heating device 917 to the filament-shaped molten resin. .

In the melt blow part 911, a resin passage 912 for flowing molten resin and

hot air passages

913a and 913b for flowing hot air are formed. The

hot air passages

913a and 913b are provided with an inclination with respect to the resin passage 912 with the resin passage 912 interposed therebetween, whereby hot air from the

hot air passages

913a and 913b is added to the molten resin spun from the resin passage 912. Is sprayed.

JP 2010-185153 A

However, in the nonwoven fabric manufacturing apparatus, since the

hot air passages

913a and 913b of the melt blow part 911 are formed obliquely with respect to the lower surface 911a, if the

hot air passages

913a and 913b are formed by cutting with a drill, the lower surface 911a. The drill will be applied diagonally. Therefore, there is a possibility that the tip of the drill may slide on the lower surface 911a, and it is difficult to form the

hot air passages

913a and 913b with high accuracy. In order to ensure accuracy, it is necessary to use higher-cost electrolytic processing or the like. there were.

Therefore, the present invention has been made in view of the above problems, and is a nanofiber manufacturing apparatus and a nanofiber manufacturing apparatus that can be manufactured by cutting and can effectively put molten resin on a gas flow. An object is to provide a head to be used.

The nanofiber manufacturing apparatus of one embodiment of the present invention includes an angle α (where 0 <α ≦ 90 degrees) with respect to a raw material outlet surface on which a raw material flow path through which a liquid raw material is discharged is formed, and the raw material outlet surface. And a gas outlet surface formed with a gas flow path through which gas is ejected, and the raw material flow path is formed orthogonal to the raw material outlet face, and the gas flow path is The raw material flow path and the gas flow path are formed so as to intersect the gas outlet surface and the liquid raw material discharged from the raw material flow path intersects with the gas ejected from the gas flow path. It is arranged.

The nanofiber manufacturing apparatus according to another aspect of the present invention includes a raw material outlet surface on which a raw material flow path through which a liquid raw material is discharged is formed, and a gas flow that is disposed below the raw material outlet surface and jets gas. A gas outlet surface in which a passage is formed, and a connecting surface that is connected to the raw material outlet surface and the gas outlet surface and is disposed at an angle β (where 0 ≦ β <90 degrees) with respect to the raw material outlet surface; The raw material flow path is formed orthogonal to the raw material outlet face, the gas flow path is formed orthogonal to the gas outlet face, and the opening of the gas flow path is connected to the connecting surface. The raw material flow path and the gas flow path are arranged so that the liquid raw material discharged from the raw material flow path reaches the opening of the gas flow path through the connecting surface. Features.

The head used in the nanofiber manufacturing apparatus according to another aspect of the present invention includes a raw material outlet surface on which a raw material flow path for discharging a liquid raw material is formed, and an angle α (provided that 0 <Α ≦ 90 degrees), and a gas outlet surface on which a gas channel through which gas is ejected is formed, and the raw material channel is formed orthogonal to the raw material outlet surface, The gas flow path is formed orthogonal to the gas outlet surface, and the raw material flow path intersects the liquid raw material discharged from the raw material flow path and the gas ejected from the gas flow path. The gas flow path is arranged.

A head used in the nanofiber manufacturing apparatus according to another aspect of the present invention is disposed below a raw material outlet surface on which a raw material flow path for discharging a liquid raw material is formed, and below the raw material outlet surface, and gas is ejected. The gas outlet surface in which the gas flow path is formed is connected to the raw material outlet surface and the gas outlet surface, and is arranged at an angle β (where 0 ≦ β <90 degrees) with respect to the raw material outlet surface. The raw material flow path is formed orthogonal to the raw material outlet face, and the gas flow path is formed orthogonal to the gas outlet face,
The raw material flow path and the gas flow path opening are in contact with the connection surface, and the liquid raw material discharged from the raw material flow path reaches the gas flow path opening through the connection surface. A gas flow path is arranged.

According to the present invention, the raw material flow path is formed orthogonal to the raw material outlet face, and the gas flow path is formed orthogonal to the gas outlet face. Since it did in this way, a raw material flow path can be formed in a raw material exit surface by cutting, and a gas flow path can be formed in a gas exit surface. Then, the liquid raw material discharged from the raw material flow path is directly or at an angle α to the gas flow ejected from the gas flow path indirectly through the connection surface connected to the raw material outlet surface and the gas outlet surface. Can be crossed. Therefore, it can manufacture accurately by cutting and can place a liquid raw material on a gas flow effectively.

It is a figure showing the whole nanofiber manufacture device composition concerning a 1st embodiment of the present invention. It is a perspective view of the head which the nanofiber manufacturing apparatus of FIG. 1 has. It is a figure explaining the head of FIG. It is a figure explaining the structure of the modification 1 of the head of FIG. It is a figure explaining the structure of the modification 2 of the head of FIG. It is a figure explaining the structure of the modification 3 of the head of FIG. It is a figure explaining the structure of the modification 4 of the head of FIG. It is a figure explaining the structure of the modification 5 of the head of FIG. It is a figure explaining the structure of the modification 6 of the head of FIG. It is a figure explaining the structure of the modification 7 of the head of FIG. It is a perspective view of the modification 8 of the head of FIG. It is a figure explaining the structure of the modification 8 of the head of FIG. It is a perspective view of the modification 9 of the head of FIG. It is a figure explaining the structure of the modification 9 of the head of FIG. It is a perspective view of the modification 10 of the head of FIG. It is a figure explaining the structure of the modification 10 of the head of FIG. It is a perspective view of the modification 11 of the head of FIG. It is a figure explaining the structure of the modification 11 of the head of FIG. It is a perspective view of the modification 12 of the head of FIG. It is a figure explaining the structure of the modification 12 of the head of FIG. It is a figure explaining the structure of the modification 12 of the head of FIG. It is a perspective view of the modification 13 of the head of FIG. It is a figure explaining the structure of the modification 13 of the head of FIG. It is a figure explaining the structure of the modification 13 of the head of FIG. It is a perspective view of the modification 14 of the head of FIG. It is a perspective view of the modification 15 of the head of FIG. It is a figure explaining the head which the nanofiber manufacturing apparatus concerning a 2nd embodiment of the present invention has. It is a perspective view of the nanofiber manufacturing apparatus concerning a 3rd embodiment of the present invention. It is sectional drawing of the nanofiber manufacturing apparatus of FIG. It is a figure explaining the head which the nanofiber manufacturing apparatus of FIG. 28 has. It is a figure explaining the structure of the modification 1 of the head of FIG. FIG. 32 is a diagram illustrating a configuration of a second modification of the head in FIG. 30. FIG. 32 is a diagram illustrating a configuration of a third modification of the head in FIG. 30. FIG. 32 is a diagram illustrating a configuration of a fourth modification of the head in FIG. 30. It is a figure explaining the structure of the modification 5 of the head of FIG. FIG. 32 is a diagram illustrating a configuration of a sixth modification of the head in FIG. 30. It is a figure explaining the structure of the modification 7 of the head of FIG. FIG. 31 is a diagram illustrating a configuration of a modification 8 of the head of FIG. 30. It is a figure explaining the basic concept of this invention. It is a figure explaining the structure of the conventional nonwoven fabric manufacturing apparatus.

DETAILED DESCRIPTION Embodiments for carrying out the present invention will be described below. Of course, the present invention can be easily applied to configurations other than those described in the present embodiment as long as they do not contradict the spirit of the present invention.

In the present invention, a liquid raw material is supplied to a gas ejected at a relatively high speed to form nanofibers. In the present specification, when the term “gas” is used without specifying the composition, it includes gases having any composition and molecular structure. Further, in the present specification, the “raw material” means all materials for forming the nanofiber, and in the following embodiment, an example using a synthetic resin as the “raw material” will be described. However, the present invention is not limited to this, and various composition materials may be used.

In addition, in this specification, the term “liquid raw material” does not limit that the raw material is liquid. The “liquid raw material” includes, for example, a “solvent” in which a solid raw material as a solute or a liquid raw material is dissolved in advance in a predetermined solvent so as to have a predetermined concentration. Furthermore, the “liquid raw material” includes a “molten raw material” obtained by melting a solid raw material. In other words, the “liquid raw material” in the present invention requires a property having a viscosity that allows the “raw material” to be supplied (spouted and discharged) from the supply port (spout port and discharge port). In the present invention, a “raw material” having such a liquid property is referred to as a “liquid raw material”.

The concept of the basic invention of the present invention is as follows. (I) As shown in FIG. 39 (a), a raw material outlet surface 22, a gas outlet surface 23, and a liquid raw material formed perpendicular to the raw material outlet surface 22 are discharged. The raw material flow path 25 and the gas flow path 26 through which the gas formed orthogonally to the gas outlet face 23 is discharged. The raw material outlet face 22 and the gas outlet face 23 have an angle α ( However, by being arranged at 0 <α ≦ 90 degrees, the axis P of the raw material channel 25 and the axis Q of the gas channel 26 intersect at an angle α.

(II) As shown in FIG. 39 (b), a raw material outlet surface 22, a gas outlet surface 23, and a raw material flow path 25 through which a liquid raw material formed orthogonal to the raw material outlet surface 22 is discharged; A gas flow path 26 through which gas formed perpendicular to the gas outlet surface 23 is discharged, and a raw material outlet surface 22 and a connecting surface 24 connected to the gas outlet surface 23, and the gas outlet surface 23 and the connecting surface 24 are arranged at an angle β (where 0 ≦ β <90 degrees), the surface direction R of the connecting surface 24 and the axis Q of the gas flow channel 26 are at an angle α (α = 90 ° -β).

Thereby, the liquid raw material discharged from the raw material flow path 25 is directly as shown in FIG. 39 (a) or as shown in FIG. 39 (b), the raw material outlet surface 22 and the gas outlet surface 23. The gas flows from the gas flow path 26 indirectly through the connecting surface 24 connected to the gas flow path 26 at an angle α.

In FIG. 39 (a), the positional relationship of each component is as follows. If the position of the gas outlet surface 23 where the gas flow path 26 is formed is used as a reference, and expressed as a positional relationship that proceeds downstream from the position along the axis Q of the gas flow path 26, a is the distance to the raw material flow path 25. B is the distance from the raw material flow path 25 to the position where the liquid raw material intersects. Further, c is an opening diameter of the gas flow path 26, and d is a distance along a direction perpendicular to the axis Q between the raw material flow path 25 and the gas flow path 26. The same applies to FIG. 39B (where a = 0).

Here, the raw material flow channel 25 axis P forms an angle α with respect to the axis Q of the gas flow channel 26, and the raw material supply tangent angle α represented by “tan α = d / (ba)” is 0. <Θ ≦ 90 degrees is set.

In this way, the raw material supply tangent angle α should be determined by the distance a, the distance b, and the distance d, and further, the opening diameter c of the high-pressure gas and the gas jetted from the gas flow path 26. It should be determined by the relationship between pressure and temperature.

In addition, by changing the number, the arrangement interval, the arrangement distance (distance a from the gas ejection port), the arrangement angle (angle α), the diameter of the flow path, etc. Nanofibers with different diameters and fiber lengths can also be formed. Thus, the arrangement conditions of the raw material channel 25 and the gas channel 26 may be selected and changed according to the type of nanofiber to be manufactured.

(First embodiment)
A nanofiber manufacturing apparatus according to a first embodiment of the present invention will be described with reference to FIGS.

FIG. 1 is a diagram showing the overall configuration of a nanofiber manufacturing apparatus according to a first embodiment of the present invention, where (a) is a side view and (b) is a plan view. FIG. 2 is a perspective view of a head included in the nanofiber manufacturing apparatus of FIG. 3A and 3B are diagrams illustrating the head according to the first embodiment, in which FIG. 3A is a front view, FIG. 3B is a cross-sectional view taken along the line AA ′, and FIG. It is sectional drawing which follows a line. FIGS. 4 to 26 are diagrams for explaining the configurations of Modifications 1 to 15 of the head having the basic configuration shown in FIG. 2. In each of the drawings, perspective views (disassembled perspective views) similar to FIGS. Or a front view and a cross-sectional view. In the following description, terms such as front, rear, left, right, up, down may be used, but these indicate the relative positional relationship of the components, and do not indicate the absolute positional relationship unless otherwise specified. . Moreover, in each figure, the same code | symbol is attached | subjected to the structure which has the same function, and detailed description is abbreviate | omitted.

The nanofiber manufacturing apparatus 1 according to the first embodiment is configured to use a solvent in which a solid raw material or a liquid raw material as a solute is dissolved in advance in a predetermined solvent so as to have a predetermined concentration.

As shown in FIG. 1, the nanofiber manufacturing apparatus 1 includes a rectangular flat base 10, a solvent reservoir 11 installed on the base 10 and having a function of extruding a solvent under a predetermined pressure, and a solvent reservoir 11. A hose 12 for supplying a solvent to the head 20 to be described later, a gas injection unit 13 that is installed on the base 10 and ejects high-pressure gas, and a head 20 connected to the tip of the gas injection unit 13. is doing. In addition, when the temperature of the solvent is controlled according to manufacturing conditions, etc., a temperature control function (not shown) such as a heater is provided in each of the solvent reservoir 11, the hose 12 and the head 20 as necessary. Also good. In this embodiment, the solvent reservoir 11, the hose 12 and the head 20 are made of metal, but depending on various conditions such as the type of solvent and the aspect of the nanofiber product to be manufactured, Other materials such as glass may be used.

As shown in FIGS. 2 and 3, the head 20 has a substantially rectangular parallelepiped shape, and a front surface 21, a raw material outlet surface 22, and a gas outlet surface 23 facing forward (leftward in FIG. 1) are viewed from above. It is formed in a continuous manner in the lower part. The front surface 21 and the gas outlet surface 23 are parallel to each other, and the gas outlet surface 23 is disposed rearwardly (to the right in FIG. 1) with respect to the front surface 21 by a distance t. The raw material outlet surface 22 and the gas outlet surface 23 are arranged at an angle α (0 <α ≦ 90 degrees), and the raw material outlet surface 22 is directed obliquely downward. The head 20 is formed with a rear surface 27 that is parallel to the front surface 21 and faces rearward.

The head 20 has a raw material flow path 25 formed orthogonal to the raw material outlet face 22 and a gas flow path 26 formed orthogonal to the gas outlet face 23. The raw material flow path 25 is communicated with the raw material supply path 28 formed orthogonal to the rear surface 27 in the head 20. The gas flow path 26 is formed so as to penetrate the gas outlet surface 23 and the rear surface 27 linearly.

In the present embodiment, the raw material flow path 25 defines a cylindrical space (that is, a circular shape whose cross section perpendicular to the axis is the same throughout), and the gas flow path 26 also defines a cylindrical space. The raw material outlet surface 22 is formed so that its width (length in the vertical direction in FIG. 3) is larger than the diameter of the raw material flow path 25 (about twice the diameter), and the raw material flow path is at the center in the width direction. 25 is arranged. The gas flow path 26 is disposed at a distance from the raw material outlet surface 22. The axis P of the raw material channel 25 and the axis Q of the gas channel 26 are arranged so as to be included in one plane, and the axis P and the axis Q intersect at an angle α at one point in front of the head 20.

The hose 12 is connected to the opening on the rear surface 27 of the raw material supply path 28, and the solvent supplied from the solvent reservoir 11 flows through the hose 12, the raw material supply path 28 and the raw material flow path 25, and the raw material outlet It is discharged from the opening of the raw material flow path 25 on the surface 22.

The gas injection unit 13 is connected to the opening on the rear surface 27 of the gas flow channel 26, and the high-pressure gas supplied from the gas injection unit 13 flows through the gas flow channel 26 and is on the gas outlet surface 23. It is ejected from the opening of the gas flow path 26.

Of course, such a configuration is merely an example, and a raw material flow path 25 formed orthogonal to each of the raw material outlet surface 22 and the gas outlet surface 23 arranged at an angle α (0 <α ≦ 90 degrees). As long as it has the gas flow path 26, the configuration is arbitrary as long as the object of the present invention is not violated. In this embodiment, the hose 12 and the gas injection unit 13 are directly connected to the head 20. For example, a manifold block in which the hose 12 and the gas injection unit 13 are connected is provided on the rear surface 27 side of the head 20. A configuration may be employed in which the head 20 is detachable from the manifold block, and the raw material and gas are supplied from the hose 12 and the gas injection unit 13 to the head 20 via the manifold block.

The operation of the nanofiber manufacturing apparatus 1 and the head 20 of this embodiment will be described. The nanofiber manufacturing apparatus 1 supplies a solvent from the solvent reservoir 11 and discharges it from the opening of the raw material flow path 25 on the raw material outlet surface 22, and supplies a high-pressure gas from the gas injection unit 13 on the gas outlet surface 23. From the opening of the gas flow path 26. Then, the solvent discharged from the raw material flow path 25 intersects the flow of gas ejected from the gas flow path 26 at an angle α, and is conveyed forward while being stretched to produce nanofibers.

According to the nanofiber manufacturing apparatus 1 and the head 20 of the present embodiment described above, the raw material flow path 25 is formed orthogonal to the raw material outlet surface 22, and the gas flow path 26 is formed orthogonal to the gas outlet surface 23. Has been. Since it did in this way, the raw material flow path 25 can be formed in the raw material outlet surface 22 and the gas flow path 26 can be formed in the gas outlet surface 23 by cutting, and the solvent discharged from the raw material flow path 25 can be The gas flow directly ejected from the gas flow path 26 can be made to intersect at an angle α. Therefore, it can manufacture with a sufficient precision by cutting and can put a solvent on a gas flow effectively.

The nanofiber manufacturing apparatus 1 of the present embodiment can constitute a nanofiber manufacturing apparatus without using a complicated apparatus such as a heating cylinder, a motor, or a screw by using a solvent in which a raw material is dissolved in a solvent. Therefore, the size of the apparatus becomes compact, and space can be saved. In addition, since the apparatus can be configured compactly, a portable nanofiber manufacturing apparatus can be configured. In the case of such a portable type nanofiber manufacturing apparatus, it becomes possible to make a nanofiber product by spraying the nanofiber toward the place where the nanofiber is to be attached, and the use of the nanofiber is further expanded.

(Modification 1 of the first embodiment)
FIG. 4 shows Modification 1 of the head 20 (hereinafter, also referred to as “basic configuration head 20”) of the nanofiber manufacturing apparatus 1. The head 20 A of Modification 1 is formed so that the width of the material outlet surface 22 (the length in the vertical direction in FIG. 4) is the same as the diameter of the material flow path 25. For other configurations, the head 20A of the first modification is the same as the head 20 of the basic configuration.

(Modification 2 of the first embodiment)
In FIG. 5, the modification 2 of the head 20 which the said nanofiber manufacturing apparatus 1 has is shown. The head 20B of this modification 2 is formed such that the width of the raw material outlet surface 22 (length in the vertical direction in FIG. 5) is larger than the diameter of the raw material flow path 25 (about three times the diameter), A part of the gas flow path 26 is disposed in contact with the raw material outlet surface 22. For other configurations, the head 20B of the second modification is the same as the head 20 of the basic configuration.

(Modification 3 of the first embodiment)
In FIG. 6, the modification 3 of the head 20 which the said nanofiber manufacturing apparatus 1 has is shown. The head 20 C of this modification 3 is formed so that the width of the raw material outlet surface 22 (the vertical length in FIG. 6) is the same as the diameter of the raw material flow path 25, and a part of the gas flow path 26. Is disposed in contact with the raw material outlet surface 22. Thereby, the raw material flow path 25 and the gas flow path 26 are disposed in contact with each other. For other configurations, the head 20C of the third modification is the same as the head 20 of the basic configuration.

(Modification 4 of the first embodiment)
In FIG. 7, the modification 4 of the head 20 which the said nanofiber manufacturing apparatus 1 has is shown. In the head 20 D of the fourth modified example, the raw material flow path 25 defines a square columnar space having a rectangular cross section. For other configurations, the head 20D of the fourth modification is the same as the head 20 of the basic configuration.

(Modification 5 of the first embodiment)
FIG. 8 shows a fifth modification of the head 20 included in the nanofiber manufacturing apparatus 1. In the head 20 E of the fifth modification, the gas flow path 26 defines a square columnar space having a rectangular cross section. With respect to other configurations, the head 20E of the modified example 5 is the same as the head 20 of the basic configuration.

(Modification 6 of the first embodiment)
In FIG. 9, the modification 6 of the head 20 which the said nanofiber manufacturing apparatus 1 has is shown. In the head 20F of the modified example 6, the raw material flow path 25 defines a rectangular column-shaped space having a rectangular cross section, and the gas flow path 26 also defines a rectangular column-shaped space having a rectangular cross section. For the other configurations, the head 20F of the modified example 6 is the same as the head 20 of the basic configuration.

(Modification 7 of the first embodiment)
FIG. 10 shows a modified example 7 of the head 20 included in the nanofiber manufacturing apparatus 1. The head 20G of the modified example 7 has a rectangular parallelepiped shape, does not have the front surface 21 in front of the head 20, and is forward in front of the entire front surface (front side in FIG. 10A, left direction in FIGS. 10B and 10C). ) Is formed. The gas flow path 26 is formed orthogonally to the gas outlet face 23, and the raw material outlet face 22 disposed at an angle α with the gas outlet face 23 is formed in the gas flow path 26. ing. Thereby, the gas flow path 26 has divided the columnar space which cut off some cylinders along the string. The head 20G of Modification 7 is formed so that the width of the raw material outlet surface 22 (the length in the vertical direction in FIG. 10A) is the same as the diameter of the raw material flow path 25. For other configurations, the head 20G of the modified example 7 is the same as the head 20 of the basic configuration.

(Modification 8 of the first embodiment)
11 and 12 show a modification 8 of the head 20 included in the nanofiber manufacturing apparatus 1. In the head 20H of the modified example 8, the part having the front surface 21 and the raw material outlet surface 22 (first part 20a) and the part having the gas outlet surface 23 (second part 20b) in the head 20 having the basic configuration are separated. These parts are detachably coupled to each other by coupling means (not shown) such as a belt or a screw.

The first portion 20a of the head 20H of the modified example 8 has a shape in which one side is chamfered in a rectangular parallelepiped, and the front surface 21 and the raw material outlet surface 22 (corresponding to the chamfered portion) are sequentially connected from top to bottom. The raw material flow path 25 is formed and formed orthogonal to the raw material outlet surface 22. The second portion 20 b has a rectangular parallelepiped shape, has a gas outlet surface 23 formed on the entire front surface, and has a gas flow path 26 formed orthogonal to the gas outlet surface 23. In the head 20H of the modified example 8, when the first portion 20a and the second portion 20b are joined, the raw material outlet surface 22 and the gas outlet surface 23 are arranged at an angle α. The head 20H of the modified example 8 has a configuration in which the first portion 20a and the second portion 20b are detachable, and has the same configuration as the head 20 of the basic configuration except that they are coupled to each other.

(Modification 9 of the first embodiment)
13 and 14 show a ninth modification of the head 20 included in the nanofiber manufacturing apparatus 1. In the head 20I of the modification 9, the second portion 20b has the same configuration as the head 20H of the modification 8, and when the first portion 20a is combined with the second portion 20b, the raw material outlet surface 22 and The angle α ′ formed by the gas outlet surface 23 is different from that of the head 20H of the modified example 8 (α ′ ≠ α, 0 <α ′ ≦ 90 degrees). Regarding the configuration other than this, the head 20I of the modification 9 is the same as the head 20H of the modification 8. By preparing a plurality of types of the first portion 20a and the second portion 20b having different angles between the raw material outlet surface 22 and the gas outlet surface 23 when combined, as in Modification 8 and Modification 9, By changing the combination of the first part 20a and the second part 20b, the angle at which the axis P of the raw material channel 25 and the axis Q of the gas channel 26 intersect can be easily changed. Moreover, the position where the axis line P and the axis line Q intersect can be easily changed by shifting the first part 20a in the front-rear direction with respect to the second part 20b. In this case, a spacer in which a raw material or gas flow path is formed is disposed on the rear side of the first portion 20a or the second portion 20b.

(Modification 10 of the first embodiment)
15 and 16 show a modified example 10 of the head 20 included in the nanofiber manufacturing apparatus 1. Similarly to the head 20H of the modification 8, the head 20J of the modification 10 has a first part 20a and a second part 20b that are separate from each other, and for example, a coupling means (not shown) such as a belt or a screw. Thus, the first portion 20a and the second portion 20b are detachably coupled to each other.

The first portion 20a of the head 20J of the modified example 10 has a rectangular parallelepiped shape, and a front surface 21 facing the front (front side in FIG. 16 (a), left direction in (b) and (c)) on the entire front surface. A raw material outlet surface 22 formed downward and facing downward is formed on the entire lower surface, and has a raw material flow path 25 formed orthogonal to the raw material outlet surface 22. The second portion 20b has the same configuration as the head 20H of the modified example 8, has a rectangular parallelepiped shape, the gas outlet surface 23 is formed on the entire front surface, and the gas formed orthogonal to the gas outlet surface 23. A flow path 26 is provided. When the first portion 20a and the second portion 20b are joined, the head 20J of the modified example 10 is disposed such that the raw material outlet surface 22 and the gas outlet surface 23 are orthogonal (α = 90 degrees).

(Modification 11 of the first embodiment)
17 and 18 show a modification 11 of the head 20 included in the nanofiber manufacturing apparatus 1. FIG. 17A is an exploded perspective view of the head 20K of the modification 11 and FIG. 17B is a perspective view of the pre-processing member K before the first portion 20a of the head 20A of the modification 11 is cut out. The head 20K of this modified example 11 has a raw material outlet pipe 29 that protrudes from the raw material outlet surface 22 and has a raw material channel 25 formed inside. For other configurations, the head 20K of the modification 11 is the same as the head 20H of the modification 8. In addition, it is good also as a structure which has the gas exit pipe | tube (not shown) which protruded and formed in the gas exit surface 23 similarly to the said raw material exit pipe | tube 29 and the gas flow path 26 was formed inside.

(Modification 12 of the first embodiment)
19 and 20 show a modification 12 of the head 20 included in the nanofiber manufacturing apparatus 1. In the head 20L of the modified example 12, in the head 20H of the modified example 8, a concave groove 31 having a rectangular cross section is formed on the upper surface of the second portion 20b in place of the gas flow path 26 that partitions the cylindrical space. . The head 20L of the modified example 12 has a rectangular cross section with one surface in contact with the second portion 20b in the first portion 20a and the concave groove 31 of the second portion 20b by coupling the first portion 20a and the second portion 20b. A gas flow path 26 is formed that partitions the square columnar space. For other configurations, the head 20L of the modification 12 is the same as the head 20H of the modification 8. In the head 20L of the modified example 12, as shown in FIG. 21, the first portion 20a and the second portion 20b are shifted in the front-rear direction so that the front surface 21 and the gas outlet surface 23 are included in the same plane. May be.

(Modification 13 of the first embodiment)
22 and 23 show a modified example 13 of the head 20 included in the nanofiber manufacturing apparatus 1. In the head 20M of this modification 13, in the head 20J of the modification 10, a groove 31 having a rectangular cross section is formed on the upper surface of the second portion 20b in place of the gas flow path 26 that defines the cylindrical space. . The head 20M of the modified example 13 has a rectangular cross section between the first portion 20a and the second portion 20b coupled to each other so that the first portion 20a is in contact with the second portion 20b and the groove 31 of the second portion 20b. A gas flow path 26 is formed that partitions the square columnar space. Regarding the configuration other than this, the head 20M of the modification 13 is the same as the head 20J of the modification 10. In the head 20M of the modified example 13, as shown in FIG. 24, the first portion 20a and the second portion 20b may be arranged so as to be shifted so that the front surface 21 and the gas outlet surface 23 are included in the same plane. Good.

(Modification 14 of the first embodiment)
In FIG. 25, the modification 14 of the head 20 which the said nanofiber manufacturing apparatus 1 has is shown. The head 20 S of the modified example 14 has two raw

material flow paths

25, 25, and one gas flow path 26 disposed between the two raw

material flow paths

25, 25. In other words, it has one channel set that includes two

source channels

25 and 25 and one gas channel 26. In the head 20 S of the modified example 14, two raw material outlet surfaces 22 and 22 are formed so as to sandwich one gas outlet surface 23. The raw material outlet surfaces 22 and 22 and the gas outlet surface 23 are arranged to form an angle α (0 <α ≦ 90 degrees). The head 20 S of the modified example 14 includes raw

material flow paths

25, 25 formed orthogonal to the two raw material outlet faces 22, 22 and a gas flow path 26 formed orthogonal to the gas outlet face 23. Have. Similarly to the head 20 of the nanofiber manufacturing apparatus 1, the head 20 S of the modification 14 is configured such that the raw

material flow paths

25, 25 of the raw

material flow paths

25, 25 and the gas flow path 26 have an axis Q in front of the head 20 S. It intersects at an angle α at one point. As a result, the solvent discharged from the two

raw material channels

25, 25 crosses the flow of gas ejected from the gas channel 26 at an angle α and is carried forward while being stretched. In this configuration, by discharging different liquid raw materials from the two

raw material channels

25, 25, two types of fibers of two different liquid raw materials are simultaneously generated with the same gas, and these are mixed. You can also

(Modification 15 of the first embodiment)
In FIG. 26, the modification 15 of the head 20 which the said nanofiber manufacturing apparatus 1 has is shown. The head 20T of this modification 15 has two

raw material channels

25, 25 and two

gas channels

26, 26. In other words, there are a plurality (two) of channel sets each including one raw material channel 25 and one gas channel 26 corresponding thereto. The head 20T of the modification 15 has two

first portions

20a and 20a and a second portion 20b sandwiched between the two

first portions

20a and 20a. The

first portions

20a and 20a have the same configuration as the first portion 20a of the modified example 8 described above. The 2nd part 20b has a rectangular parallelepiped shape, and the

concave grooves

31 and 31 are formed in the upper surface and the lower surface. In the head 20T according to the modified example 15, the

first portion

20a, 20a and the second portion 20b are coupled to each other so that the

first portion

20a, 20a is in contact with the second portion 20b and the groove 31 of the second portion 20b. , 31 form

gas flow paths

26, 26 that define a rectangular columnar space having a rectangular cross section. The relationship between the raw material flow path 25 and the gas flow path 26 in the head 20T of the modification 15 is the same as the relationship between the raw material flow path 25 and the gas flow path 26 in the head 20L of the modification 12. In this configuration, different liquid raw materials are discharged from the two raw

material flow paths

25, 25 and the same gas is ejected from the two

gas flow paths

26, 26, whereby two different liquids are used in the same gas. It is also possible to simultaneously produce two types of fibers made of a raw material and to mix them. Furthermore, in this configuration, different liquid raw materials are discharged from the two raw

material flow paths

25, 25 and different gases are ejected from the two

gas flow paths

26, 26, whereby two different kinds of gas are different. It is also possible to simultaneously produce two types of fibers made of various liquid raw materials and to mix them.

Table 1 shows an outline of the basic configuration of the head 20 of the first embodiment and the configurations of modifications 1 to 15 thereof.

(Second Embodiment)
A nanofiber manufacturing apparatus according to a second embodiment of the present invention will be described with reference to FIG. The nanofiber manufacturing apparatus 2 (not shown) of the second embodiment has the same configuration as the nanofiber manufacturing apparatus 1 of the first embodiment shown in FIG. 1 except that the head 20U is provided instead of the head 20.

FIGS. 27A and 27B are diagrams for explaining a head included in the nanofiber manufacturing apparatus 2 according to the second embodiment of the present invention, in which FIG. 27A is a front view and FIG. 27B is a cross section taken along the line AA ′. It is a figure, (c) is sectional drawing which follows the BB 'line.

The head 20U included in the nanofiber manufacturing apparatus 2 of the second embodiment includes a raw material outlet surface 22 facing forward (a front side of the paper in FIG. 27A, a left direction in FIGS. 27B and 27C), and a connecting surface. 24 and the gas outlet surface 23 are formed so as to be connected in order from top to bottom as an absolute positional relationship. The raw material outlet surface 22 and the gas outlet surface 23 are parallel to each other, and the gas outlet surface 23 is disposed forwardly away from the front surface 21 by a distance t. The head 20U is formed with a rear surface (not shown) that is parallel to the front surface 21 and faces rearward (backward direction in FIG. 27 (a), right direction in (b) and (c)).

Further, the head 20U has a raw material flow path 25 formed perpendicular to the raw material outlet face 22 and a gas flow path 26 formed orthogonal to the gas outlet face 23. The raw material channel 25 is formed so as to penetrate the raw material outlet surface 22 and the rear surface in a straight line. The gas flow path 26 is also formed so as to penetrate the gas outlet surface 23 and the rear surface 27 linearly. The axis P of the raw material channel 25 and the axis Q of the gas channel 26 are arranged so as to be included in one plane.

Further, the connecting surface 24 and the gas outlet surface 23 are arranged at an angle β (0 ≦ β <90 degrees), and the connecting surface 24 is directed obliquely upward. In other words, the surface direction R of the connecting surface 24 and the axis Q of the gas flow path 26 form an angle α (α = 90−β). When the head 20U is viewed from the lateral direction (front to back in FIG. 27B and FIG. 27C), the surface direction R and the axis Q intersect at an angle α at one point in front of the head 20U. In other words, this “lateral direction” is a direction parallel to both the connecting surface 24 and the gas outlet surface 23.

In the present embodiment, the raw material flow path 25 defines a cylindrical space (that is, a circular shape whose cross section perpendicular to the axis is the same throughout), and the gas flow path 26 also defines a cylindrical space. In addition to this, the raw material flow path 25 and the gas flow path 26 may have a shape that partitions a square columnar space. A part of the raw material flow path 25 is in contact with the connection surface 24, and a part of the gas flow path 26 is also in contact with the connection surface 24. A raw material flow groove 24 a that linearly connects the raw material flow path 25 and the gas flow path 26 is formed in the connecting surface 24.

The operation of the nanofiber manufacturing apparatus and the head 20U of the present embodiment will be described. The nanofiber manufacturing apparatus supplies a solvent from the solvent reservoir 11 and discharges it from the opening of the raw material flow path 25 on the raw material outlet surface 22, and supplies a high-pressure gas from the gas injection unit 13 on the gas outlet surface 23. The gas channel 26 is ejected from the opening. Then, the solvent discharged from the raw material flow path 25 reaches the opening of the gas flow path 26 through the raw material flow groove 24a, crosses the gas flow ejected from the gas flow path 26 at an angle α, and stretches. While being carried forward, nanofibers are produced.

According to the nanofiber manufacturing apparatus 2 and the head 20U of the present embodiment described above, the raw material flow path 25 is formed orthogonal to the raw material outlet surface 22 and the gas flow path 26 is formed orthogonal to the gas outlet surface 23. Has been. Since it did in this way, the raw material flow path 25 can be formed in the raw material outlet surface 22 and the gas flow path 26 can be formed in the gas outlet surface 23 by cutting, and the solvent discharged from the raw material flow path 25 can be The flow of gas ejected from the gas flow channel 26 indirectly through the connection surface 24 can be made to intersect at an angle α. Therefore, it can manufacture with a sufficient precision by cutting and can put a solvent on a gas flow effectively.

(Third embodiment)
A nanofiber manufacturing apparatus according to a third embodiment of the present invention will be described with reference to FIGS. The nanofiber manufacturing apparatus 3 is configured to use a molten raw material obtained by melting a solid raw material.

28 and 29 are a perspective view and a sectional view of a nanofiber manufacturing apparatus according to the third embodiment of the present invention. FIGS. 30A and 30B are diagrams for explaining a head included in the nanofiber manufacturing apparatus of FIG. 28, in which FIG. 30A is a front view and FIG. FIGS. 31 to 38 are views for explaining the configurations of the first to eighth modified examples of the head having the basic configuration shown in FIG. 30. In each of the drawings, a front view and a sectional view are shown in the same manner as FIG. . In the following description, terms such as front, rear, left, right, up, down may be used, but these indicate the relative positional relationship of the components, and do not indicate the absolute positional relationship unless otherwise specified. . Moreover, in each figure, the same code | symbol is attached | subjected to the structure which has the same function, and detailed description is abbreviate | omitted.

The nanofiber manufacturing apparatus 3 according to the present embodiment includes a hopper 62 for feeding pellet-shaped resin (a granular synthetic resin having a fine particle diameter), which is a material of the nanofiber, to the nanofiber manufacturing apparatus 3, and a hopper 62. A heating cylinder 63 for receiving and supplying a resin to heat and melt it, a heater 64 as a heating means for heating the heating cylinder 63 from the outside, and being rotatably accommodated in the heating cylinder 63 and rotating. A screw 65 as an extruding means for moving the molten resin to the tip of the heating cylinder 63, a motor 66 as a driving means for rotating the screw 65 via a connecting portion 69 (not shown in detail), and the heating cylinder 63 And a columnar head 70 provided at the tip. A gas injection unit (not shown) is connected to the head 70 via a gas supply pipe 68. In the present embodiment, the components such as the heating cylinder 63 and the head 70 are mainly made of metal, but the type of resin used as the nanofiber material, the mode of the nanofiber product to be manufactured, etc. Depending on the various conditions, other materials such as resin or glass may be used.

As shown in FIG. 30, the head 70 has a front surface 71 facing forward (a front side in FIG. 30A and a left direction in FIG. 30B), a raw material outlet surface 72, and a gas outlet surface 73. They are formed in order from the top to the bottom. The front surface 71 and the gas outlet surface 73 are parallel to each other, and the gas outlet surface 73 is disposed at a distance t from the front surface 71 rearward (to the right in FIG. 30B). The raw material outlet surface 72 and the gas outlet surface 73 are arranged at an angle α (0 <α ≦ 90 degrees), and the raw material outlet surface 72 is directed obliquely downward. The head 70 is formed with a rear surface (not shown) that is parallel to the front surface 71 and faces rearward.

The head 70 also has a plurality of raw material channels 75 formed orthogonal to the raw material outlet surface 72 and a gas channel 76 formed orthogonal to the gas outlet surface 73. In the present embodiment, the same number (seven) of the raw material channels 75 and the gas channels 76 are provided, and the raw material channels 75 and the gas channels 76 arranged in the vertical direction correspond to each other. In other words, a plurality of (seven) channel sets each including one raw material channel 75 and one gas channel 76 arranged corresponding to the source channel 75 are provided.
The plurality of flow channel sets are arranged in one direction so that the raw material flow channel 75 and the gas flow channel 76 are arranged on two straight lines parallel to each other.

In the present embodiment, the raw material flow path 75 defines a cylindrical space, and the gas flow path 76 also defines a cylindrical space. The raw material outlet surface 72 is formed so that the width (the length in the vertical direction in FIG. 30A) is larger than the diameter of the raw material flow path 75 (about twice the diameter). A raw material channel 75 is disposed. The gas flow path 76 is disposed at a distance from the raw material outlet surface 72. Regarding the raw material channel 75 and the gas channel 76 corresponding to each other, the axis P of the source channel 75 and the axis Q of the gas channel 76 are arranged so as to be included in one plane, and the axis P and the axis Q are It intersects at an angle α at one point in front of the head 70.

The plurality of raw material channels 75 are connected to the heating cylinder 63, and the molten raw material supplied from the heating cylinder 63 flows through the plurality of raw material channels 75, and the plurality of raw material channels 75 on the raw material outlet surface 72. It is discharged from the opening.

The plurality of gas flow paths 76 are communicated with the gas supply pipe 68 in the head 70, and the high-pressure gas supplied from the gas injection unit flows through the gas supply pipe 68 and the plurality of gas flow paths 76, thereby It is ejected from the openings of the plurality of gas flow paths 76 on the outlet surface 73.

Of course, such a configuration is merely an example, and a raw material flow path 75 formed orthogonal to each of the raw material outlet surface 72 and the gas outlet surface 73 arranged at an angle α (0 <α ≦ 90 degrees). As long as the gas channel 76 is provided, the configuration is arbitrary as long as the object of the present invention is not violated.

The operation of the nanofiber manufacturing apparatus 3 and the head 70 of this embodiment will be described. In the nanofiber manufacturing apparatus 3, the pellet-shaped raw material (resin) charged in the hopper 62 is supplied into the heating cylinder 63 heated by the heater 64 and melted, and the heating cylinder is rotated by the screw 65 rotated by the motor 66. The molten raw material (molten resin) that has been delivered to the front of 63 and reached the tip of the heating cylinder 63 is discharged from the plurality of raw material channels 75 via the inside of the head 70. Further, high-pressure gas is ejected from a plurality of gas flow paths 76 formed in the head 70. Then, in the raw material flow path 75 and the gas flow path 76 corresponding to each other, the molten raw material discharged from the raw material flow path 75 crosses the flow of the gas ejected from the gas flow path 76 at an angle α and is stretched. While being carried forward, nanofibers are produced.

According to the nanofiber manufacturing apparatus 3 and the head 70 of the present embodiment described above, the raw material flow path 75 is formed orthogonal to the raw material outlet surface 72, and the gas flow path 76 is formed orthogonal to the gas outlet surface 73. Has been. Thus, a plurality of raw material flow paths 75 can be formed on the raw material outlet surface 72 by cutting, and a plurality of gas flow paths 76 can be formed on the gas outlet surface 73, and are discharged from the raw material flow paths 75. The melted raw material can be made to intersect the gas flow directly ejected from the gas flow path 76 at an angle α. Therefore, it can manufacture with a sufficient precision by cutting, and can put a molten raw material on the flow of gas effectively. Moreover, since it has the some raw material flow path 75 and the some gas flow path 76, a nanofiber can be manufactured efficiently in large quantities in a short time.

(Modification 1 of 3rd Embodiment)
FIG. 31 shows a first modification of the head 70 (hereinafter also referred to as “basic configuration head 70”) of the nanofiber manufacturing apparatus 3. In the head 70 A of the first modification, the plurality of gas flow paths 76 define a square columnar space having a rectangular cross section. For other configurations, the head 70A of the first modification is the same as the head 70 of the basic configuration.

(Modification 2 of 3rd Embodiment)
FIG. 32 shows a second modification of the head 70 included in the nanofiber manufacturing apparatus 3. The head 70B of the second modified example has one slit-like gas flow path 76 extending in the lateral direction (the left-right direction in FIG. 32A, the front-back direction in FIG. 32B), and the gas The channel 76 defines a rectangular column-shaped space having a rectangular cross section. For other configurations, the head 70B of the second modification is the same as the head 70 of the basic configuration. The head 70 B of Modification 2 includes a channel set including one slit-like gas channel 76 extending in one direction and a plurality of raw material channels 75 arranged side by side in the one direction. I have one. In the head 70 B according to the second modification, the axis P of the raw material channel 75 and the axis Q of the gas channel 76 intersect at an angle α at one point in front of the head 70 when viewed from the lateral direction. In other words, the “lateral direction” is a direction parallel to both the raw material outlet surface 72 and the gas outlet surface 73.

(Modification 3 of 3rd Embodiment)
FIG. 33 shows Modification 3 of the head 70 included in the nanofiber manufacturing apparatus 3. The head 70 C of this modification 3 has m raw material flow paths 75 and n gas flow paths 76 (where m ≠ n). The head 70C of Modification 3 has six raw material flow paths 75 and seven gas flow paths 76. The horizontal direction of each raw material flow path 75 (the left-right direction in FIG. Each of them is arranged so that the position (b) (front side to back direction) of b) is an intermediate position between the adjacent gas flow paths 76. The number of gas flow paths 76 may be larger than the number of raw material flow paths. For other configurations, the head 70C of the third modification is the same as the head 70 of the basic configuration. The head 70 C of Modification 3 has one channel set that includes m source channels 75 and n gas channels 76. In the head 70 C of the third modification, the axis P of the raw material channel 75 and the axis Q of the gas channel 76 intersect at an angle α at one point in front of the head 70 when viewed from the lateral direction.

(Modification 4 of 3rd Embodiment)
FIG. 34 shows a fourth modification of the head 70 included in the nanofiber manufacturing apparatus 3. In the head 70D of the fourth modified example, the portion having the front surface 71 and the raw material outlet surface 72 (first portion 70a) and the portion having the gas outlet surface 73 (second portion 70b) in the head 70 having the basic configuration are separated. These parts are configured to be detachable from each other by a coupling means (not shown) such as a belt or a screw.

The first portion 70a of the head 70D of Modification 4 has a shape in which a cylindrical body is cut along a radius, and a side corresponding to the radius at one end face is chamfered. (Corresponding to the chamfered portion) are connected in order from the upper side to the lower side, and have a plurality of raw material flow paths 75 formed orthogonal to the raw material outlet surface 72. The second portion 70b has a shape obtained by cutting the cylindrical body along a radius and becomes a cylindrical body by being coupled to the first portion 70a, and a gas outlet surface 73 is formed on the entire front surface. A gas flow path 76 formed orthogonal to the outlet surface 73 is provided. In the head 70D of Modification 4, when the first portion 70a and the second portion 70b are coupled, the raw material outlet surface 72 and the gas outlet surface 73 are arranged at an angle α. The head 70D of Modification 4 has a configuration in which the first portion 70a and the second portion 70b are detachable, and has the same configuration as the head 70 of the basic configuration except that they are coupled to each other.

(Modification 5 of the third embodiment)
FIG. 35 shows a fifth modification example of the head 70 included in the nanofiber manufacturing apparatus 3. The head 70E of this modified example 5 has a cylindrical shape, and has an annular front surface 71 facing forward (the front side of the paper in FIG. 35A and the left direction in FIG. 35B), and an annular raw material outlet surface. 72 and a circular gas outlet surface 73 are concentrically connected in order from the outer periphery toward the center. The front surface 71 and the gas outlet surface 73 are parallel to each other, and the gas outlet surface 73 is disposed rearwardly (to the right in FIG. 30B) by a distance t with respect to the front surface 71. The raw material outlet surface 72 and the gas outlet surface 73 are arranged at an angle α (0 <α ≦ 90 degrees), and the raw material outlet surface 72 is formed in an inwardly tapered shape. Further, a rear surface (not shown) which is parallel to the front surface 71 and faces rearward is formed on the head 70E of the modified example 5.

Further, the head 70E of the modified example 5 includes a plurality of raw material flow paths 75 that are orthogonal to the raw material outlet surface 72 and arranged at equal intervals in the circumferential direction, and one that is orthogonal to the center of the gas outlet surface 73. A gas flow path 76 is provided. In the head 70 E of Modification 5, a plurality (eight) of raw material flow paths 75 are provided around the gas flow path 76. In other words, the head 70 E according to the modified example 5 has one flow path set including one gas flow path 76 and a plurality of raw material flow paths 75 arranged around the gas flow path 76. ing.

Further, in the head 70E of the modified example 5, the raw material flow path 75 defines a cylindrical space, and the gas flow path 76 also defines a cylindrical space. The raw material outlet surface 72 is formed so that the width (the length in the radial direction) is the same as the diameter of the raw material flow path 75. The gas flow path 76 is disposed at a distance from the raw material outlet surface 72. The axis P of the plurality of raw material channels 75 and the axis Q of the gas channel 76 intersect at an angle α at one point in front of the head 70B.

(Modification 6 of 3rd Embodiment)
FIG. 36 shows a sixth modification of the head 70 included in the nanofiber manufacturing apparatus 3. The head 70F of this modification 6 has a plurality of raw material outlet pipes 79 protruding from the raw material outlet surface 72 and having a plurality of raw material flow paths 75 formed inside. With respect to the other configuration, the head 70F of the modification 6 is the same as the head 70E of the modification 5.

(Modification 7 of the third embodiment)
FIG. 37 shows a seventh modification of the head 70 included in the nanofiber manufacturing apparatus 3. The head 70G of the modified example 7 has a cylindrical shape, and has an annular front surface 71 facing forward (a front side in FIG. 37A and a left direction in FIG. 37B), and an annular raw material outlet surface. 72 and a circular gas outlet surface 73 are concentrically connected in order from the outer periphery toward the center. The front surface 71 and the gas outlet surface 73 are parallel to each other, and the gas outlet surface 73 is disposed rearwardly (to the right in FIG. 30B) by a distance t with respect to the front surface 71. The raw material outlet surface 72 and the gas outlet surface 73 are arranged at an angle α (0 <α ≦ 90 degrees), and the raw material outlet surface 72 is formed in an inwardly tapered shape. Further, a rear surface (not shown) which is parallel to the front surface 71 and faces rearward is formed on the head 70G of the modified example 7.

Further, the head 70G of the modified example 7 has a plurality of raw material flow passages 75 orthogonal to the raw material outlet surface 72 and arranged at equal intervals in the circumferential direction, and an orthogonal arrangement to the gas outlet surface 73 and arranged at equal intervals in the circumferential direction. A plurality of gas flow paths 76 are provided. A plurality of (eight) heads 70 G of Modification 7 are provided so that the raw material flow paths 75 and the gas flow paths 76 correspond to each other. In other words, the head 70G of the modified example 7 is provided with a plurality of (eight) flow channel sets including one raw material flow channel 75 and one gas flow channel 76 arranged corresponding to the raw material flow channel 75, The plurality of flow channel sets are arranged in an annular shape so that the raw material flow channel 75 and the gas flow channel 76 are arranged on the circumferences of two concentric circles.

Further, in the head 70G of the modified example 7, the raw material flow path 75 defines a cylindrical space, and the gas flow path 76 also defines a cylindrical space. The raw material outlet surface 72 is formed so that the width (length in the radial direction) is larger (about twice) than the raw material flow path 75. Each of the plurality of gas flow paths 76 is disposed in contact with the raw material outlet surface 72. The axis P of the material flow path 75 and the axis Q of the gas flow path 76 corresponding to each other intersect at an angle α at one point in front of the head 70G.
(Modification 8 of 3rd Embodiment)
In FIG. 38, the modification 8 of the head 70 which the said nanofiber manufacturing apparatus 3 has is shown. In the head 70 H according to the modified example 8, a plurality of gas flow paths 76 define a rectangular column-shaped space having a rectangular cross section and are spaced from the raw material outlet surface 72. With respect to the other configuration, the head 70H of the modified example 8 is the same as the head 70G of the modified example 7.

Table 2 shows an outline of the basic configuration of the head 70 of the third embodiment and the configurations of modifications 1 to 8 thereof.

Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the present invention.

For example, in the above-described embodiment, the molten resin and the gas ejection port are shown as a horizontal nanofiber manufacturing apparatus in which the horizontal direction is directed to the horizontal direction. There is no problem as a head. In that case, the influence of gravity can be avoided effectively.

Moreover, in each embodiment and its modification, the position of the raw material flow path and the position of the gas flow path may be interchanged. Specifically, for example, in the head 20 of the first embodiment, the position of the raw material outlet surface 22 is replaced with the position of the gas outlet surface 23 so that the front surface 21 and the raw material outlet surface 22 are arranged in parallel. The material outlet face 22 may be disposed at an angle α, and the raw material outlet face 22 and the gas outlet face 23 may be formed with the raw material outlet face 22 and the gas outlet face 26, respectively. Further, the configuration of the present invention is not limited to the arrangement shown in the drawings of the embodiments. For example, the drawings of the embodiments are turned upside down so that the raw material flow path (raw material outlet surface) and the gas flow paths ( Adopted a configuration in which the position of the gas outlet surface) is changed, or a configuration in which the raw material flow channel (raw material outlet surface) and the gas flow channel (gas outlet surface) are arranged side by side by rotating 90 degrees. Or you may.

Moreover, although the extrusion means has been described as a screw, it is necessary to take measures against interruption of the nanofiber to be produced. However, there is no problem even if intermittent extrusion is performed using a piston or the like by sequentially supplying solutions as in die casting. .

In addition, the nanofiber manufacturing apparatus and head of the present invention are materials that use a contact-type heater or the like around the outside of the head in accordance with the conditions of fluidity and property retention of the liquid raw material used and the conditions of fiber generation. It is desirable to have a temperature control function (not shown).

Also, the nanofiber manufacturing apparatus and head of the present invention preferably have a gas temperature control function (not shown) for controlling the gas temperature at the gas outlet in accordance with various conditions for fiber generation.

(First embodiment)
DESCRIPTION OF SYMBOLS 1 ... Nanofiber manufacturing apparatus, 10 ... Base, 11 ... Solvent reservoir, 12 ... Hose, 13 ... Gas injection part, 20, 20A-20M, 20S, 20T ... Head, 20a ... First part, 20b ... Second part , 21 ... front face, 22 ... raw material outlet face, 23 ... gas outlet face, 25 ... raw material flow path, 26 ... gas flow path, 27 ... rear face, 28 ... raw material supply path, 29 ... raw material outlet pipe, 31 ... concave groove, P: Axis of raw material flow path, Q: Axis of gas flow path.
(Second Embodiment)
DESCRIPTION OF SYMBOLS 2 ... Nanofiber manufacturing apparatus, 20U ... Head, 21 ... Front surface, 22 ... Raw material exit surface, 23 ... Gas exit surface, 24 ... Connection surface, 24a ... Raw material flow groove, 25 ... Raw material flow path, 26 ... Gas flow path, 27: Rear surface, P: Axis of raw material flow path, Q: Axis of gas flow path, R: Surface direction of connecting surface.
(Third embodiment)
DESCRIPTION OF SYMBOLS 3 ... Nanofiber manufacturing apparatus, 62 ... Hopper, 63 ... Heating cylinder, 64 ... Heater, 65 ... Screw, 66 ... Motor, 68 ... Gas supply pipe, 69 ... Connection part, 70, 70A-70H ... Head, 70a ... No. 1 part, 70b ... 2nd part, 71 ... front surface, 72 ... raw material outlet surface, 73 ... gas outlet surface, 75 ... raw material flow path, 76 ... gas flow path, 79 ... raw material outlet pipe, P ... axis of raw material flow path , Q: axis of gas flow path.

Claims

A raw material outlet surface formed with a raw material flow path through which the liquid raw material is discharged;
A gas outlet surface that is arranged at an angle α (where 0 <α ≦ 90 degrees) with respect to the raw material outlet surface, and has a gas flow path through which gas is ejected,
The raw material flow path is formed orthogonal to the raw material outlet surface,
The gas flow path is formed orthogonal to the gas outlet surface;
The nanofiber, wherein the raw material flow path and the gas flow path are arranged so that the liquid raw material discharged from the raw material flow path and the gas ejected from the gas flow path intersect each other Manufacturing equipment.
2. The apparatus according to claim 1, further comprising one or a plurality of channel sets each including one source channel and one gas channel arranged corresponding to the source channel. Nanofiber manufacturing equipment.
A plurality of the flow channel sets are provided, and the plurality of flow channel sets are arranged in one direction so that the raw material flow channel and the gas flow channel are arranged on two straight lines parallel to each other. The nanofiber manufacturing apparatus according to claim 2.
A plurality of the flow channel sets are provided, and the plurality of the flow channel sets are arranged in an annular shape so that the raw material flow channel and the gas flow channel are arranged on the circumference of two circles that are concentric circles. The nanofiber manufacturing apparatus according to claim 2, wherein the apparatus is a nanofiber manufacturing apparatus.
5. The nano of any one of claims 1 to 4, wherein the axis of the gas flow path and the axis of the raw material flow path arranged corresponding to the gas flow path are included in one plane. Fiber manufacturing equipment.
2. The apparatus according to claim 1, further comprising one or a plurality of flow path sets each including a plurality of the raw material flow paths and one gas flow path arranged corresponding to the raw material flow paths. Nanofiber manufacturing equipment.
The flow path set includes one slit-shaped gas flow path extending in one direction and a plurality of the raw material flow paths arranged side by side in the one direction. 6. The nanofiber production apparatus according to 6.
The said flow path set has one said gas flow path and the said some raw material flow path arrange | positioned around the said gas flow path, The nanofiber manufacture of Claim 6 characterized by the above-mentioned. apparatus.
The nanofiber production according to any one of claims 1 to 8, further comprising a raw material outlet pipe protruding from the raw material outlet surface and having the raw material flow path formed therein. apparatus.
The nanofiber manufacturing method according to any one of claims 1 to 9, further comprising a gas outlet pipe protruding from the gas outlet face and having the gas flow path formed therein. apparatus.
A first portion having the raw material outlet surface;
A second portion having the gas outlet surface,
The nanofiber manufacturing apparatus according to any one of claims 1 to 10, wherein the first portion and the second portion are detachably coupled to each other.
A raw material outlet surface formed with a raw material flow path through which the liquid raw material is discharged;
A gas outlet surface disposed below the raw material outlet surface and having a gas flow path through which gas is ejected;
A connecting surface that is connected to the raw material outlet surface and the gas outlet surface and is disposed at an angle β (where 0 ≦ β <90 degrees) with respect to the raw material outlet surface;
The raw material flow path is formed orthogonal to the raw material outlet surface,
The gas flow path is formed orthogonal to the gas outlet surface;
The opening of the gas flow path is in contact with the connecting surface;
The raw material flow path and the gas flow path are arranged so that the liquid raw material discharged from the raw material flow path reaches the opening of the gas flow path through the connection surface. Nanofiber manufacturing equipment.
A head used in a nanofiber manufacturing apparatus,
A raw material outlet surface formed with a raw material flow path through which the liquid raw material is discharged;
A gas outlet surface that is arranged at an angle α (where 0 <α ≦ 90 degrees) with respect to the raw material outlet surface, and has a gas flow path through which gas is ejected,
The raw material flow path is formed orthogonal to the raw material outlet surface,
The gas flow path is formed orthogonal to the gas outlet surface;
The head, wherein the raw material flow path and the gas flow path are arranged so that the liquid raw material discharged from the raw material flow path and the gas ejected from the gas flow path intersect.
A head used in a nanofiber manufacturing apparatus,
A raw material outlet surface formed with a raw material flow path through which the liquid raw material is discharged;
A gas outlet surface disposed below the raw material outlet surface and having a gas flow path through which gas is ejected;
A connecting surface that is connected to the raw material outlet surface and the gas outlet surface and is disposed at an angle β (where 0 ≦ β <90 degrees) with respect to the raw material outlet surface;
The raw material flow path is formed orthogonal to the raw material outlet surface,
The gas flow path is formed orthogonal to the gas outlet surface;
The opening of the gas flow path is in contact with the connecting surface;
The raw material flow path and the gas flow path are arranged so that the liquid raw material discharged from the raw material flow path reaches the opening of the gas flow path through the connection surface. head.