JP6246055B2 - Dry spinning equipment - Google Patents

Description

  The present invention relates to a dry spinning apparatus that discharges a spinning solution from a nozzle to a gas phase, and dries and spins a yarn precursor, a nonwoven fabric manufacturing apparatus that uses the dry spinning apparatus, and a spinning method.

  A dry spinning apparatus is known as an apparatus that forms a yarn precursor by dissolving a part or all of a spinning stock solution in a solvent and discharging it from a discharge hole, and drying and spinning the solvent contained in the yarn precursor. It is done. In general, the spinning dope is discharged from the discharge hole and stretched to the yarn by the flow of pressurized gas.

For example, Patent Document 1 discloses an invention of a dry spinning apparatus in which a spinning stock solution supplied from a stock solution pipe is discharged from a nozzle, and spinning is performed by bringing the spinning stock solution and the inert gas into contact in a spinning cylinder through which an inert gas flows (hereinafter referred to as an invention). , Also referred to as “Prior Art 1”). More specifically, it is as follows. That is, as the prior art 1, two or more nozzle ends are adjacent to each other in a state of protruding from the pressure equalizing chamber into which the inert gas flows. Then, a configuration is disclosed in which the spinning solution discharged from the nozzle end and the high-temperature inert gas that flows from the pressure equalization chamber through the ventilation groove and flows into the spinning cylinder come into contact with each other in the spinning cylinder ( Patent Document 1 FIG. 1 and the like).
Prior art 1 avoids the influence of the high-temperature inert gas and keeps the periphery of the stock solution pipe for sending the stock solution to the nozzle in a cooling pipe in order to keep the temperature of the stock solution before spinning from the nozzle at an appropriate temperature. The structure to be adopted is adopted.

Patent Document 2 discloses a technique for producing a nonwoven fabric using edible water-soluble polymer pullulan. In addition, as an intermediate stage for manufacturing the nonwoven fabric, a technique for forming a hydrous pullulan fiber stream (hereinafter also referred to as “conventional technique 2”) is shown. In the prior art 2, a pullulan aqueous solution or a pullulan melt is discharged from a spinning nozzle and at the same time high-pressure air supplied by a blower is blown downward from an air nozzle provided around the spinning nozzle to form a water-containing pullulan fiber stream. It is described that. It is disclosed that the water-containing pullulan fiber stream is heated by an infrared heater provided in parallel with the water-containing pullulan fiber stream to evaporate and remove moisture in the fiber.
Patent Document 2 FIG. 1 shows a mode in which a spinning nozzle tip is positioned inside an air nozzle. In FIG. 2A, a plurality of spinning nozzles are linearly arranged, and each spinning nozzle is located in a plurality of independent air nozzles (hereinafter also referred to as “independent air nozzle mode”). It is shown. Also, in FIG. 2B, a plurality of spinning nozzles are linearly arranged, and the plurality of spinning nozzles are located in one horizontally long air nozzle (hereinafter also referred to as “single air nozzle mode”). )It is shown.

  In addition, the technique which manufactures a nonwoven fabric continuously using the yarn spun by the dry-type spinning apparatus is known (for example, patent document 2).

JP-A-7-189014 Japanese Patent Laid-Open No. 61-75861

  The present inventors have examined a dry spinning apparatus from the viewpoint of continuous spinning for a long time. As a result, it has been found that in a spinning apparatus that does not have a problem in the case of one batch processing, smooth spinning may be difficult when continuously operated for a long time.

Examples of specific problems include the following.
That is, as in the prior art 1, when the nozzle protrudes to the outer surface side of the discharge portion main body of the apparatus including the nozzle and the ventilation groove through which the inert gas blows, the yarn precursor discharged from the nozzle is rolled and the yarn breaks. There is a problem that the cut yarn precursor is easily attached to the tip of the nozzle. Contamination of the nozzle tip prevents subsequent smooth spinning. Further, even if the yarn does not break, the yarn precursor rebounds immediately after being discharged from the nozzle tip and may adhere to the nozzle tip or its periphery.
In addition, there is a problem as described below in a mode in which a single air nozzle is provided and a plurality of spinning nozzles are arranged in parallel in the air nozzle as in the single air nozzle mode shown as one mode of the prior art 2. That is, the yarn precursor (water-containing pullulan fiber flow) discharged from the plurality of spinning nozzles arranged in parallel is likely to be wound due to slight disturbance of the high-pressure airflow passing through the air nozzle. As a result, it has been found that adjacent yarn precursors may adhere to each other, preventing orderly spinning. In some cases, breakage of yarn precursors discharged from the spinning nozzle, twisting of yarn precursors, and the like were observed. In the prior art 2 as well, the yarn precursor discharged from the spinning nozzle may be rebounded upstream immediately after being discharged from the tip of the nozzle until it does not break, and may adhere to the nozzle tip or its periphery. there were.
On the other hand, in the mode in which each spinning nozzle is located in a plurality of independent air nozzles, such as the independent air nozzle mode shown as the mode of the prior art 2, adhesion between adjacent yarn precursors does not occur in the air nozzle. However, even in the above independent air nozzle mode, when the continuous operation is performed for a long time, the yarn precursor discharged from the spinning nozzle is broken, the yarn precursors are wound outside the air nozzle, and the smooth spinning is hindered. I found out that there was a case.
In addition, the above-mentioned problem that occurs due to continuous operation for a long time also becomes a problem in the single air nozzle mode in the prior art 1 and the prior art 2.

  In addition, establishment of a technique for continuously producing a nonwoven fabric from spinning by a dry spinning apparatus is required. In connection with the nonwoven fabric manufacturing apparatus, there are cases where it is difficult to manufacture the nonwoven fabric continuously for a long time in conjunction with the problem of the spinning apparatus. Therefore, provision of a nonwoven fabric manufacturing apparatus capable of continuously manufacturing a nonwoven fabric for a long time is expected.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a dry spinning apparatus capable of continuously spinning for a long time. The present invention also provides a non-woven fabric manufacturing apparatus that can manufacture a non-woven fabric continuously for a long time from spinning by the dry spinning apparatus. In view of the above problems, an object of the present invention is to provide a spinning method capable of spinning continuously for a long time.

The dry spinning device of the present invention includes a blower that blows out a pressurized gas for drawing a yarn precursor,
A spinning nozzle that discharges the spinning stock solution to form the yarn precursor, a nozzle substrate having the spinning nozzle, a flow dividing substrate in which a plurality of air nozzles are formed in a plane, and the pressurized gas blown from the blower are A discharge unit main body provided with an air supply path leading to an air nozzle, and a heating mechanism for heating and removing the solvent contained in the yarn precursor, the nozzle substrate comprising: a substrate main body; and A plurality of the spinning nozzles provided on one surface, and two or more spinning nozzles are detachably attached to the substrate body, and the spinning nozzle includes a nozzle body and an interior of the nozzle body. And a stock solution circulation hole through which the spinning stock solution is circulated, and one or a plurality of the spinning nozzles are respectively arranged corresponding to the plurality of air nozzles. The tip of the reel body is characterized in that it does not project above the air nozzle.

  Moreover, the nonwoven fabric manufacturing apparatus of this invention is equipped with the dry spinning apparatus of this invention, and the movable collection surface which collects the yarn spun by the said dry spinning apparatus.

 The spinning method of the present invention includes a blower that blows out a pressurized gas for drawing a yarn precursor, a spinning nozzle that discharges a spinning stock solution to form the yarn precursor, a nozzle substrate that includes the spinning nozzle, an in-plane A flow dividing substrate having a plurality of air nozzles formed therein, a discharge portion main body provided with an air supply path for guiding the pressurized gas blown from the blower to the air nozzle, and a solvent contained in the yarn precursor. A heating mechanism for removing heat, wherein the nozzle substrate comprises a substrate body and a plurality of the spinning nozzles provided on one surface of the substrate body, and two or more spinning nozzles are Using a dry spinning device that is detachably attached to the substrate body and in which one or a plurality of the spinning nozzles are arranged corresponding to the plurality of air nozzles, the nozzles of the spinning nozzles The spinning solution is circulated through the stock solution circulation hole provided in the interior of the nozzle, and the spinning precursor solution is discharged from the tip of the nozzle body before the opening on the downstream side of the air nozzle to form the yarn precursor. The yarn precursor is guided in the downstream direction by the wind pressure of the pressurized gas flowing through the air nozzle and discharged from the opening of the air nozzle, and then the yarn precursor discharged from the opening of the air nozzle is The yarn is spun by heating with a heating mechanism.

According to the dry spinning apparatus and the spinning method of the present invention, even when there is a fluctuation in the blower pressure of the blower, rectification of the pressurized gas is promoted. This enables spinning by continuous operation for a long time.
According to the dry spinning apparatus and spinning method of the present invention, even when the blower pressure varies, the yarn precursor discharged from the spinning nozzle is prevented from being cut during the spinning. This enables spinning by continuous operation for a long time.
Moreover, the nonwoven fabric manufacturing apparatus of this invention can manufacture a nonwoven fabric continuously for a long time.

It is a schematic diagram explaining a nonwoven fabric manufacturing apparatus provided with the dry spinning apparatus of this invention. It is a disassembled perspective view which shows one embodiment of the spinning solution discharge part in the dry spinning apparatus of this invention. It is a partial expansion schematic sectional drawing in one embodiment of the dry-spinning apparatus of this invention. It is explanatory drawing explaining the spinning nozzle upstream in the one embodiment of the dry spinning apparatus of this invention. It is explanatory drawing for demonstrating the aspect of the movable collection surface in the nonwoven fabric manufacturing apparatus of this invention. It is an expanded sectional view showing one mode of a spinning nozzle used for the dry spinning device of the present invention. It is a schematic diagram explaining the dry-type spinning apparatus in the 2nd embodiment of this invention. It is a disassembled perspective view which shows the spinning stock solution discharge part of the dry-type spinning apparatus which is a modification of the 2nd embodiment of this invention. FIG. 9 is a side view of the nozzle substrate when observed from the direction of arrow A in FIG. 8. It is a schematic diagram explaining the dry-type spinning apparatus in the 3rd embodiment of this invention. FIG. 11A is a perspective view of a spinning nozzle substrate used in the third embodiment of the dry spinning apparatus of the present invention, and FIG. 11B is a side view of the spinning nozzle substrate shown in FIG. It is explanatory drawing explaining the wind direction of the wind ventilated from the ventilation part provided in the 3rd embodiment of this invention. It is a schematic diagram explaining an example of the dry-type spinning apparatus concerning the 4th embodiment of this invention. FIG. 14A is a perspective view showing an example of a three-layer structure according to the fifth embodiment of the present invention, and FIG. 14B shows an example of a five-layer structure according to the fifth embodiment of the present invention. It is a perspective view shown. It is a disassembled perspective view of the laminated body shown to FIG. 14A. It is a fragmentary perspective view explaining the other example of the dry-type spinning apparatus concerning the 4th embodiment of this invention. It is a partial expanded schematic sectional drawing in the modification of the 1st embodiment of the dry-spinning apparatus of this invention. It is an expanded sectional view showing one mode of a spinning nozzle used for the dry spinning device of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In all the drawings, the same constituent elements are denoted by the same reference numerals, and redundant description is omitted as appropriate.
The configurations shown in the various embodiments described in this specification can be combined with each other as appropriate without departing from the spirit of the present invention. That is, any structure shown in any one embodiment in this specification can be used as appropriate in another embodiment.
In the drawings shown below, the actual dimensional ratio may be changed as appropriate for ease of illustration or explanation. Accordingly, the dimensional ratios of the components shown in the drawings do not limit the present invention.

First, an outline of the dry spinning apparatus 1 of this embodiment will be described.
The dry spinning apparatus 1 according to this embodiment includes a blower 10 that blows out a pressurized gas for stretching the yarn precursor 12, a discharge unit body, and a heating mechanism. The discharge section main body includes a spinning nozzle 31 that discharges the spinning stock solution to form the yarn precursor 12, a flow dividing substrate 9 in which a plurality of air nozzles 40 are defined in the surface, and a pressurized gas blown from the blower 10 to the air nozzle 40. The air supply path 11a leading to the air supply path 11 and the storage portion 44 provided in the middle of the air supply path 11a are formed inside. The heating mechanism is for heating and removing the solvent contained in the yarn precursor 12.
The spinning nozzle 31 has a nozzle body 43 and a stock solution circulation hole 42 that is formed inside the nozzle body 43 and circulates the spinning stock solution. One or a plurality of spinning nozzles 31 are provided for a plurality of air nozzles 40, respectively. Correspondingly arranged.
The tip of the nozzle body 43 does not protrude from the air nozzle 40, and at least a part of the peripheral side surface of the nozzle body 43 is exposed inside the storage portion 44. The pressurized gas introduced into the reservoir 44 is rectified on the peripheral side surface of the nozzle body 43 and is diverted by the air nozzle 40 to stretch the yarn precursor 12. The fact that the tip of the nozzle body 43 does not protrude from the air nozzle 40 means that the tip of the nozzle body 43 is not located outside the opening on the downstream side of the air nozzle 40. The tip of the nozzle body 43 is located at substantially the same position as the downstream opening of the air nozzle 40 or further upstream. Specifically, the tip of the nozzle body 43 is substantially at the same position as the opening on the downstream side of the air nozzle 40, within the thickness of the flow dividing substrate 9 including the air nozzle 43, at substantially the same position as the opening on the upstream side of the air nozzle 40, or the air nozzle 40. It can be located either upstream of the opening on the upstream side.

  In the conventional dry spinning apparatus, when trying to continuously run spinning for several hours or more than a dozen hours or more, problems that were not observed in batch spinning occurred, It was observed that desirable continuous operation was not possible. More specifically, when the dry spinning apparatus was operated continuously for a long time, the yarn precursor discharged from the spinning nozzle was twisted, the drawability was lowered, and the yarn precursor was broken. In particular, when the spinning stock solution has a high viscosity, or when particles are contained in the spinning stock solution, the end of the yarn precursor jumps upward when the yarn breaks, and the outer surface of the spinning device There was a case where it adheres to. Moreover, even if the yarn does not break, there is a concern that the yarn precursor immediately after being ejected rebounds upstream and adheres to the outer surface of the spinning device. Depending on the location of the adhesion, there are cases in which the discharge of the spinning solution from the nozzle and the drawing of the yarn precursor are inconvenient and the operation is stopped and maintenance is forced.

  The present inventors inferred this problem as follows. That is, the blower provided in the dry spinning apparatus is normally set to operate at a constant blow pressure, but when the apparatus is operated continuously for a long time, the blower blow pressure slightly fluctuates. This causes a disturbance in the air flow of the pressurized gas. The turbulence of the air current sharply affects the drawing of the spinning dope and prevents spinning.

  Therefore, the present inventors have adopted a configuration in which one or a plurality of spinning nozzles are arranged corresponding to a plurality of air nozzles and the tip of the nozzle body is arranged at a position where the air nozzle does not protrude. Thereby, the disturbance of the spinning dope immediately after being discharged from the spinning nozzle is suppressed.

In addition, the present inventors provide a storage portion that is upstream of the flow dividing substrate including a plurality of air nozzles and in the middle of the air supply path, and that injects pressurized gas into the storage portion, or By passing it, the technical idea of rectifying the pressurized gas continuously for a long time was reached. In particular, by providing a storage portion that is upstream of the flow dividing substrate including a plurality of air nozzles and in the middle of the air supply path, exposing at least a portion of the peripheral side surface of the spinning nozzle, and blowing pressurized gas into the storage portion The technical idea of rectifying the pressurized gas continuously for a long time has been reached.
Note that the rectification described in the present invention means adjusting the flow of the pressurized gas in a desired direction. That is, it means that the flow of pressurized gas is adjusted so that the spinning dope discharged from the spinning nozzle is sent out in a desired direction. By rectifying the pressurized gas, it is intended to promote or assist the good and stable drawing of the yarn precursor formed by being discharged from the spinning nozzle.

Embodiments of the present invention will be described below with reference to the drawings. In all the drawings, similar constituent elements are denoted by the same reference numerals, and description thereof may be omitted as appropriate. In the present embodiment, there are cases where the vertical direction is defined and described, but this vertical direction is for explaining the relative relationship of the components for convenience, and does not necessarily mean the vertical direction of gravity.
Further, the present invention is not limited to the embodiments described below, and includes various modifications and improvements as long as the object of the present invention is achieved.
Further, the various components of the present invention do not have to be individually independent, that a plurality of components are formed as one member, and one component is formed of a plurality of members. That a certain component is a part of another component, a part of a certain component overlaps a part of another component, and the like.

[First embodiment]
FIG. 1 is an explanatory view showing a dry spinning apparatus 1 of the present invention and a nonwoven fabric manufacturing apparatus 21 having the same. FIG. 2 is an exploded perspective view showing one embodiment of a spinning stock solution discharge portion in the dry spinning apparatus 1, and FIG. 3 is a partially enlarged schematic sectional view in one embodiment of the spinning apparatus of the present invention. In the following, first, an embodiment of the dry spinning apparatus of the present invention will be described, and then the nonwoven fabric manufacturing apparatus of the present invention will be described.

A dry spinning apparatus 1 shown in FIG. 1 includes a hopper 2 for feeding a spinning stock solution, a feed pipe 3 for guiding the spinning stock solution fed into the hopper 2 into the head 4, and a feed pipe 3 provided in the head 4. Are provided with a continuous liquid supply path 3a. A stock solution chamber 5 is provided on the downstream side of the liquid supply passage 3a, and the flow path of the spinning solution continues to the nozzle substrate 6 provided with the spinning nozzle 31. The spinning precursor solution is discharged from the spinning nozzle 31 provided in the surface of the nozzle substrate 6 to form the yarn precursor 12.
The dry spinning apparatus 1 includes a blower 10 for blowing out pressurized gas, an air supply pipe 11 for introducing the pressurized gas blown out from the blower 10 into the head 4, and a supply pipe provided in the head 4 and continuing to the air supply pipe 11. An airway 11a is provided. On the downstream side of the air supply passage 11a, air supply holes (not shown) formed in the nozzle substrate 6, a spacer 7, and a throttle plate 8 are provided as a passage for the pressurized gas to flow. 9 is blown out to the downstream side through a plurality of air nozzles (not shown).
The above-described dry spinning apparatus 1 includes a head 4, a nozzle substrate 6, a spacer 7, a diaphragm plate 8, and a flow dividing substrate 9, and a discharge unit body is configured. A storage unit not shown in FIG. It is provided inside the main body and downstream of the air supply path 11a.
In the dry spinning apparatus 1, a plurality of spinning nozzles 31 are aligned in one direction to form one line (FIG. 2). This is referred to as a spinning nozzle line 400.
The nozzle substrate 6, the spacer 7, the diaphragm plate 8, and the flow dividing substrate 9 will be described later with reference to FIG. The storage unit will be described later with reference to FIG.

The head 4 is a housing that includes a liquid supply path 3 a, an air supply path 11 a, and a stock solution chamber 5. However, the shape is not limited to a rectangular shape. The material for forming the casing constituting the head 4 is not particularly limited, but selecting an aluminum material is advantageous in terms of light weight, thermal conductivity, and the like.
The head 4 may optionally be provided with a cooling mechanism. The cooling mechanism is for cooling the temperature of the air atmosphere inside the head 4 to an appropriate temperature range. In the dry spinning apparatus 1 of the present invention, the pressurized gas blown from the blower 10 passes through the inside of the head 4 through the air supply path 11a as described above. Here, it was found from the examination of the long-time continuous operation of the dry spinning device 1 that the temperature of the pressurized gas blown out from the blower 10 tends to increase as the dry spinning device 1 operates continuously for a long time. As a result, the temperature inside the head 4 also rises, and the temperature of the spinning dope flowing through the liquid supply passage 3a or the spinning dope flowing into the stock solution chamber 5 also rises. The rise in temperature may reach, for example, around 70 ° C. As a result, it has been found that the increase in temperature of the pressurized gas can cause clogging of the spinning nozzle 31. Therefore, it is desirable to provide a cooling mechanism inside the head 4 in order to prevent the temperature of the spinning dope from rising by adjusting the air temperature inside the head 4 to an appropriate temperature range. For the same purpose, a cooling mechanism may be provided outside the head 4 so that the air temperature inside the head 4 may be adjusted to an appropriate temperature range. The appropriate temperature range varies depending on the type of solvent used for the spinning material and is not particularly limited. For example, the range does not exceed 50 ° C, particularly does not exceed 45 ° C, and further does not exceed 40 ° C. Can be recognized. The lower limit of the temperature range is not particularly limited as long as the spinning dope is not frozen. For example, the temperature may be any temperature that is generally recognized as normal temperature, specifically, 10 ° C. or higher, 15 ° C. or higher, and particularly 20 ° C. or higher.

The cooling mechanism provided inside the head 4 is not particularly limited as long as the air temperature can be adjusted to an appropriate temperature range.
For example, FIG. 1 shows an example in which four cooling pipes 110 penetrating the inside of the head 4 from the front side of the drawing to the depth side are provided as one aspect of the cooling mechanism. The cooling medium flows into the cooling pipe 110 from a cooling medium discharge device (not shown). The cooling medium may be a liquid such as water or a gas such as air, but is not particularly limited. The cooling medium that has passed through the head 4 may be drained or exhausted outside the head 4. Alternatively, the cooling medium may be refluxed to the cooling medium discharge device to exchange heat, and used again as the cooling medium. 1 shows an embodiment in which four cooling pipes 110 are provided along the direction in which the spinning nozzles 31 are arranged, the number of cooling pipes 110 penetrating into the head 4 and the positions where the cooling pipes 110 are provided are not particularly limited.
As another aspect of the cooling mechanism, an inflow port for introducing a cooling medium such as air into the head 4 and an exhaust port for discharging the air in the head 4 or the introduced gas are provided. May be. Thus, the air atmosphere inside the head 4 may be adjusted to an appropriate temperature range.
In any cooling mechanism, a temperature sensor may be provided inside the head 4 so that the movement of the cooling medium automatically starts when the air temperature inside the head 4 exceeds an appropriate temperature range. Alternatively, a thermometer for observing the air temperature inside the head 4 is provided so as to be visible inside the head 4 or outside the head 4, and the circulation of the cooling medium is manually started in response to the temperature change. May be.
In FIG. 3, the cooling pipe 110 is not shown.

The spinning dope provided to the dry spinning apparatus 1 of the present invention is not particularly limited in terms of its properties or preparation method. Therefore, when using a spinning stock solution that is a melt, the dry spinning device 1 of the present invention may be recognized as a spinning device used in the melt blow method (melt spinning method). When the dry spinning apparatus 1 is used for the melt blow method, a thermoplastic resin is suitable as the spinning material, but is not limited thereto.
Alternatively, a spinning dope prepared by suspending or dissolving the spinning material in a solvent may be used. The spinning dope may be one in which a part of the spinning material is dissolved in a solvent and a different spinning material is suspended. When these spinning stock solutions are used, the dry spinning apparatus 1 of the present invention may be recognized as a spinning apparatus used in the solution spinning method.
In particular, the spinning dope prepared for use in the solution spinning method is generally in the form of a slurry. In particular, when a slurry-like spinning solution is used, the dry spinning device 1 of the present invention may be recognized as a spinning device used in the slurry blowing method. When using a spinning material whose structure changes when heated at a high temperature of 100 ° C. or higher, particularly 200 ° C. or higher, the dry spinning device 1 is preferably used as the slurry blowing method. More specifically, for example, when hydroxyapatite is used as the spinning material, the apatite fiber can be spun while maintaining the hydroxyl group. That is, the slurry blowing method is suitable for spinning hydroxyapatite. Similarly, when the pullulan is used as a spinning material, the slurry blowing method is suitable. However, it is not excluded that the dry spinning apparatus 1 is used for spinning by a melt blow method using pullulan as a spinning material.

The yarn precursor 12 discharged into the gas phase from the spinning nozzle 31 provided on the nozzle substrate 6 passes through an opening (not shown) of the heat insulating layer 13, further passes through the housing 14, and is spun. An infrared heater 15 is provided in the casing 14 along the extending direction of the yarn precursor that passes through the casing 14, and the heating mechanism of the present invention is configured. The yarn precursor is spun by heating and removing the solvent contained therein, and extends to the outside of the housing 14 as a yarn 17.
The yarn diameter of the yarn precursor 12 can be adjusted by the diameter of the discharge hole of the spinning nozzle 31 or the flow rate of pressurized gas. For example, when it is desired to make the fiber diameter of the yarn precursor 12 smaller, adjustment may be made to increase the flow velocity of the pressurized gas. The air velocity of the pressurized gas can be appropriately determined according to the performance and adjustment of the blower, and is not particularly limited. For example, the speed of the pressurized gas may be appropriately determined in the range of 20 m / s to 1000 m / s, depending on the function of the blower used.
For example, when a spinning stock solution in which water-soluble polysaccharide water is dissolved in a solvent is used, the diameter of the discharge hole of the spinning nozzle 31 is 100 μm to 1 mm, preferably 200 μm to 900 μm, more preferably 250 μm to 750 μm. It can be as follows. The diameter of the discharge hole here includes the opening diameter on the discharge side of the hole provided inside the spinning nozzle 31. Thus, the yarn precursor 12 discharged from the thin spinning nozzle 31 can exhibit a fiber diameter equal to or smaller than the diameter of the spinning nozzle 31. When the spinning dope is 100% by mass, it is possible to adjust the amount of the solute (that is, the polysaccharide raw material) in the spinning dope to 10% by mass to 30% by mass. When the solvent is removed from the yarn precursor 12 formed using the spinning stock solution having such a concentration by the heating mechanism (infrared heater 15), the yarn 17 having a fiber diameter smaller than the fiber diameter of the yarn precursor 12 is obtained. It is formed.

  The infrared heater 15 is an example of a heating device included in the heating mechanism in the dry spinning device of the present invention. That is, the heating mechanism in the present invention includes the infrared heater 15 installed along the extending direction of the yarn precursor 12 discharged and drawn from the spinning nozzle 31. The infrared heater 15 includes a mode in which the solvent contained in the yarn precursor 12 is removed by heating by irradiating the yarn precursor 12 with infrared rays directly and / or by radiation. For example, the heating mechanism includes a radiation plate 16 together with the infrared heater 15. As a result, the yarn precursor 12 can be radiated and dried by irradiating the yarn precursor 12 with infrared rays (including far infrared rays) from the infrared heater 15.

In the aspect using the infrared heater 15 as a heating mechanism, the wavelength of infrared rays may be adjusted according to the type of solvent contained in the yarn precursor 12. For example, when the solvent to be removed by heating is water, the radiation profile of the infrared heater 15 preferably has two maximum values of 3 μm and 6 μm. By irradiating the yarn precursor 12 with such infrared rays and heating, the water solvent in the yarn precursor 12 can be efficiently removed by heating. The temperature of the infrared heater 15 may be determined as appropriate and is not particularly limited. For example, the temperature of the infrared heater 15 can be set in a range of about 200 ° C. to 500 ° C. and adjusted so that the temperature of the yarn precursor 12 heated thereby falls within an appropriate temperature range. In addition to the temperature of the infrared heater 15, the temperature of the yarn precursor 12 can also be adjusted by adjusting the length of the spinning path. Further, the heating mechanism may be provided with a blowing device, heated by the infrared heater 15, and cooled by blowing so that the yarn precursor 12 is in an appropriate temperature range. The appropriate temperature range may be appropriately determined in consideration of the types of materials contained in the spinning dope. Generally, it is preferable that the temperature range is such that the protein contained in the yarn precursor 12 is not denatured. More specifically, a range of 40 ° C. to 60 ° C. and the like can be mentioned, but are not limited thereto.
However, the heating mechanism of the present invention is not limited to an embodiment using the infrared heater 15. For example, the heating mechanism may be a mode in which a heating device other than the infrared heater 15 is installed in the housing 14. Alternatively, the heating mechanism may be an embodiment in which the pressurized gas for stretching the yarn precursor 12 is adjusted to a high temperature without using the heating device as a main heat source, and heating removal is performed along with stretching. In an embodiment using a high-temperature pressurized gas, the high-temperature pressurized gas blown into the reservoir is prevented from drying the spinning stock solution flowing in the spinning nozzle that exposes the peripheral side surface inside the reservoir. It is desirable to keep in mind.

The heat insulating layer 13 has an arbitrary configuration in the present invention. Particularly when the solvent contained in the yarn precursor 12 is removed by heating using a heating device such as an infrared heater 15 as a heating mechanism as in the dry spinning device 1 shown in FIG. .
That is, a configuration in which the heat insulating layer 13 for reducing heat conduction from the infrared heater 15 to the spinning nozzle 31 is provided between the flow dividing substrate 9 and the heating device such as the infrared heater 15 may be employed.
The heat insulation layer 13 may be a heat insulating plate formed of a member having a low thermal conductivity and a heat insulation performance, such as foamed resin or gypsum. Alternatively, it may be a heat insulating layer that cools the air atmosphere between the heating device and the flow dividing substrate 9 by circulating a cooling medium through the flow path pipe and substantially avoids heat conduction from the heating device.
Note that the expression “reducing heat conduction” includes a state in which the heat conduction is substantially zero as a result of reducing the heat conduction.

  Since the heating device heats the yarn precursor 12 discharged from the spinning nozzle 31, heat conduction mainly affects the yarn precursor 12. However, according to the study by the present inventors, when the dry spinning apparatus 1 is operated continuously for a long time, heat is conducted from the heating apparatus toward the spinning nozzle 31, which dries the solvent in the spinning solution. I found out that there is a case. As a result, the concentration of the spinning dope becomes unnecessarily high, and it may be difficult to clog the spinning nozzle 31 and to smoothly discharge the yarn precursor 12. Therefore, in order to avoid such a problem, it is desirable to provide the heat insulation layer 13.

In order to further enhance the effect of the heat insulating layer 13, the following configuration may be employed. That is, as the heat insulating layer 13, a heat insulating plate fixed between the flow dividing substrate 9 and the infrared heater 15 may be provided. An air layer 22 that can ventilate the outside air may be provided between the flow dividing substrate 9 and the heat insulating plate and / or between the heat insulating plate and the infrared heater 15. Here, that the air layer 22 can be ventilated with outside air means that the air layer 22 communicates with the atmospheric air of the dry spinning apparatus 1 through a communication path different from the air nozzle 40.
The air layer 22 is preferably a layer that is entirely or partially open to the outside air. By providing such an air layer 22, an air flow is generated between the flow dividing substrate 9 and the heat insulating plate or between the heat insulating plate and the infrared heater 15. Is more effectively reduced. FIG. 1 and FIG. 3 show an aspect in which the air layer 22 is formed by providing a gap between the heat insulating plate and the flow dividing substrate 9 and between the heat insulating plate and the housing 14 containing the infrared heater 15. In FIG. 3, a dotted arrow indicates an image in which air flows in a gap provided as an air layer.

  The heat insulating plate may be supported and fixed to an arbitrary configuration on the flow dividing substrate 9 side, or may be supported and fixed to an arbitrary configuration on the heating device side, or the heat insulating plate is fixed to an appropriate position. A fixed stand or the like may be used.

  Next, the nozzle substrate 6, the spacer 7, the diaphragm plate 8, and the flow dividing substrate 9 shown in FIG. 1 will be described in detail. FIG. 2 shows an exploded perspective view of these.

First, the nozzle substrate 6 and the flow dividing substrate 9 will be described with reference to FIG.
As described above, the nozzle substrate 6 constitutes a part of the discharge unit main body. The nozzle substrate 6 includes a substrate body 30 and a plurality of spinning nozzles 31 provided on one surface of the substrate body 30. The one surface of the substrate body 30 and the flow dividing substrate 9 face each other, and a storage portion 44 (see FIG. 3) is provided between the nozzle substrate 6 and the flow dividing substrate 9.

That is, the air supply passage 11a has a storage portion 44 in which the volume per unit distance in the flow direction of the pressurized gas increases.
The storage section 44 in this embodiment is a tubular air supply path 111 (11a) that is directly continuous from the air supply pipe 11 communicating with the head 4 in the air supply path 11a, and a substantially rectangular parallelepiped, and the spinning nozzle 31 penetrates through the center. And a storage section 44 for the small chamber. The tubular air supply path 111 (11a) and the small chamber storage section 44 are continuous with a discontinuous step as a boundary. The volume per unit distance in the flow path direction (left and right direction on the paper surface) of the reservoir 44 is larger than the volume per unit distance in the flow path direction (up and down direction on the paper surface) of the tubular air supply path 111 (11a).
The pressurized gas blown into the reservoir 44 from the tubular air supply path 111 (11a) can diffuse in a predetermined direction other than the radial direction or the flow path direction. In addition, the arrow shown from the air supply path 11a to the storage part 44 in FIG. 3 has shown the main flow path directions of pressurized gas. Here, the flow path direction means a direct extension direction indicating a path of the air supply path 11a from the blower 10 to the air nozzle 40. In the present embodiment, the storage section 44 is a pressurized gas diffusion space continuous with the tubular air supply path 111 (11a).
By providing the reservoir 44 in the air supply path 11a, the gas pressure of the pressurized gas can be averaged before flowing into the air nozzle 40.

In this embodiment, by providing the storage portion 44 in the air supply path 11a, the pressurized gas is circulated from a relatively small volume area to a large area. As a result, the pressurized gas becomes a turbulent flow in the storage unit 44 and can be temporarily stored without passing through the storage unit 44 quickly. Even if the pressurized gas stored in the storage unit 44 is mixed and the blower pressure is disturbed, the gas pressure can be averaged. Due to the presence of the reservoir 44, the pressure of the pressurized gas is averaged before flowing into the air nozzle 40, and rectification is promoted.
The reservoir 44 is continuous from the tubular air supply path 111 (11a) to the front side of the flow dividing substrate 9, and the pressurized gas is divided by the plurality of air nozzles 40 in the flow dividing substrate 9.

The substrate body 30 shown in FIG. 2 is provided with two or more holes 101 for allowing the spinning solution to pass therethrough, and the spinning nozzle 31 is continuous with the hole 101 and has the same flow of the spinning solution as the hole 101. It is provided in the position to do.
However, the hole for allowing the spinning solution to pass through in the substrate body 30 is not limited to a mode in which one hole 101 and one spinning nozzle 31 correspond as shown in FIG. For example, although not shown, two or more spinning nozzles may correspond to one hole for allowing the spinning solution provided in the substrate body 30 to pass therethrough. In this case, the spinning dope is divided by a plurality of spinning nozzles corresponding to the holes after passing through the holes provided in the substrate body 30 or during the passage.

  In the present invention, the nozzle substrate 6 is one desirable embodiment for providing a plurality of spinning nozzles 31 having a stock solution circulation hole 42 (see FIG. 3) and a nozzle body 43 (see FIG. 3) through which the spinning stock solution is circulated. As understood. The nozzle substrate 6 has advantages such as easy installation of the spinning nozzle 31 in the discharge unit main body and the storage unit 44 can be easily configured using the surface of the flow dividing substrate 9 and the surface of the substrate main body 30. However, the means for installing the spinning nozzle 31 in the discharge section main body is not limited to the nozzle substrate 6 and may be appropriately determined within the scope of the present invention.

In the nozzle substrate 6, a pressurized gas supply hole 32 is formed in the substrate body 30 (FIG. 2). The air supply hole 32 communicates directly or indirectly with the air supply path 11 a shown in FIG. 1 and is a hole for injecting pressurized gas into the storage portion 44. In the present invention, the air supply holes 32 may be provided at a place other than the substrate body 30, for example, on the side surface of the spacer 7.
The number and positions of the air supply holes 32 are not particularly limited, but it is desirable that the pressurized gas be easily rectified using the peripheral side surface of the spinning nozzle 31 in the storage portion 44. From this point of view, the nozzle substrate 6 is provided with two air supply holes 32 extending in the direction parallel to the spinning nozzles 31 in series. The two air supply holes 32 are formed as slit holes having the same shape. Consideration is made so that the arrangement of the air supply holes 32 is equal left and right with respect to the spinning nozzle 31 and the air nozzle 40 corresponding thereto.
Moreover, in another aspect which is not illustrated, the two air supply holes 32 which are equally arranged on both sides via the spinning nozzle 31 may have different opening shapes. For example, when the air supply hole 32 has a slit hole shape, the two air supply holes 32 may have substantially the same size in the length direction and may have different slit widths. The above aspect is particularly effective when the type of pressurized gas blown into the storage unit 44 is two or more. This is because the air supply holes 32 having different shapes according to the types of the pressurized gases are provided, and the mixed state of the different types of pressurized gases blown into the reservoir 44 can be adjusted. Examples of the different types of pressurized gas include, but are not limited to, a combination of air and an inert gas such as nitrogen gas or argon gas.
Note that five spinning nozzles 31 are aligned in one direction in the substrate body 30. However, the arrangement of the spinning nozzles 31 is not limited to this, and the number and arrangement configuration may be freely designed without departing from the spirit of the present invention. Of course, the number of spinning nozzles 31, the arrangement configuration, the number of air nozzles 40, and the arrangement configuration are determined after considering them to correspond to each other.

On the other hand, the flow dividing substrate 9 has a plurality of air nozzles 40 partitioned in the plane, and is a member for diverting the pressurized gas by the plurality of air nozzles 40. By partitioning the plurality of air nozzles 40, one or more spinning nozzles can be made to correspond to one air nozzle 40. When the members shown as exploded perspective views in FIG. 2 are stacked, the five spinning nozzles 31 illustrated are configured to correspond to the five air nozzles 40 provided on the flow dividing substrate 9, respectively. .
When two or more spinning nozzles 31 correspond to one air nozzle 40, the number of corresponding spinning nozzles 31 is not particularly limited. Considering that the flow of pressurized gas diverted to the air nozzle 40 and the yarn precursors discharged from the tips of adjacent spinning nozzles do not adhere to each other, it is desirable that the number is about several, and about two to six More desirable. Further, from the viewpoint of maximizing the rectification of the pressurized gas by dividing the pressurized gas by the air nozzle 40, the correspondence between the air nozzle 40 and the spinning nozzle 31 is most preferably a one-to-one relationship.

  Next, the spacer 7 will be described. The spacer 7 is a member for providing a storage portion 44 between the nozzle substrate 6 and the flow dividing substrate 9.

The spacer 7 shown in FIG. 2 is a frame-like body, and the storage portion 44 is formed with the substrate body 30 and the flow dividing substrate 9 as direct or indirect upper and lower surfaces and the inner surface of the spacer 7 as the side surface. The opening area and height of the frame-shaped body may be appropriately determined in consideration of the following two points. That is, the first point is that the spinning nozzle 31 is included in the storage portion 44 configured using the frame-like body so as to expose at least a part of the peripheral side surface thereof. The second point is that the pressurized gas inflow side port of the air nozzle is included.
According to this aspect using the spacer 7 which is an independent member, the volume of the storage part 44 can be easily changed only by exchanging the spacer 7. It can be said that the spacer 7 is advantageous in that the design of the dry spinning apparatus 1 can be easily changed, for example, by adjusting the volume of the reservoir 44 according to the flow rate and gas pressure of the pressurized gas.

In addition, when the storage part 44 is comprised by making the board | substrate main body 30 and the shunt board | substrate 9 into the direct or indirect upper surface and lower surface, the spacer 7 is not limited to a frame-shaped body. That is, the spacer 7 may be a member having a shape that can provide the side surface forming the storage portion 44 without departing from the spirit of the present invention.
In addition, the present invention is not limited to using the spacer 7 that is an independent member when the storage portion 44 is configured with the substrate body 30 and the flow dividing substrate 9 directly or indirectly as upper and lower surfaces. In other words, the side surface portion that makes a round around the outer edge of the substrate main body 30 surface or the flow dividing substrate 9 surface may be formed upright from the substrate main body 30 surface or the flow dividing substrate 9 surface.

Next, the diaphragm plate 8 will be described with reference to FIG. The diaphragm plate 8 is used to implement one mode in which a reduced diameter portion whose opening width decreases from the storage portion 44 side toward the tip end side of the air nozzle 40 is provided on the storage portion 44 side of the flow dividing substrate 9. . In this aspect, the reduced diameter portion corresponds to a throttle hole 36 to be described later, and the flow dividing board in the present invention is configured by a combination of the throttle plate 8 and the flow dividing board 9. However, in the following, for the sake of convenience, the flow dividing substrate 9 and the diaphragm plate 8 may be described separately.
The smaller opening width means that the cross-sectional area of the air supply path is smaller when the air supply path is cut perpendicularly toward the flow direction of the pressurized gas.

That is, in the dry spinning device 1 of the present embodiment, the air supply path 11 a includes a reduced diameter portion whose opening width decreases toward the tip position of the air nozzle 40 along the side surface of the spinning nozzle 31.
In the present invention, the air supply path 11a extends along the side surface of the spinning nozzle 31 when the air supply path 11a extends parallel to the side surface of the spinning nozzle 31 and intersects with an extension line of the side surface of the spinning nozzle 31. Including the case of extending in the direction of In the present embodiment, the spinning nozzle 31 extends in a direction intersecting with the extended line of the side surface.
In the present embodiment, the diameter reduction portion starts at least from the middle position of the spinning nozzle 31 and is reduced toward the tip position of the air nozzle 40.

The throttle plate 8 is laminated on the flow dividing substrate 9, so that the reduced diameter portion is provided in the flow dividing substrate 9, and a throttle hole 36 is provided in the center. That is, the throttle hole 36 is formed so that the opening width decreases from the storage portion 44 side toward the tip end side of the air nozzle 40. When the throttle plate 8 is stacked on the flow dividing substrate 9, the throttle hole 36 is formed to have a size including the air nozzle forming region 61 in which all the air nozzles 40 are formed. Therefore, when the diaphragm plate 8 is laminated on the flow dividing substrate 9, the air nozzle formation region 61 and the upper surface of the diaphragm plate 8 have a height difference.
Due to the presence of the throttle hole 36 which is a reduced diameter part, the pressurized gas blown into the storage part 44 can be blown into the air nozzle formation region 61 through the throttle hole 36, and thereafter, the gas is diverted from the plurality of air nozzles 40. Can be made. Therefore, compared with the case where the pressurized gas diffused in the storage portion 44 is directly diverted by the air nozzle 40, the flowability of the pressurized gas can be promoted by passing the throttle hole 36. It is. In order to rectify the pressurized gas more effectively through the throttle hole 36, it is preferable to form the inner wall 37 of the throttle hole 36 in a tapered shape with the upper surface opening area larger than the bottom surface opening area. However, the reduced diameter portion in the present invention is not limited to the tapered shape, and may be formed so that the opening width is reduced by providing one or more steps.

  Although not shown, the present invention includes an embodiment in which the reduced diameter portion is provided directly on the flow dividing substrate 9. That is, when the storage unit 44 side of the flow dividing substrate 9 is observed as the upper side, a reduced diameter portion that does not penetrate the flow distribution substrate 9 may be provided on the storage unit 44 side of the flow distribution substrate 9. At this time, the region shown in the range of the minimum opening diameter of the reduced diameter portion is configured to be an air nozzle forming region 61 including a plurality of air nozzles 40. As a result, the airflow flowing from the storage part 44 to the air nozzle 40 can be narrowed by the reduced diameter part, and the same effect as the aspect using the diaphragm plate 8 described above can be exhibited only by the flow dividing substrate 9.

  In the present invention, the diaphragm plate 8 has an arbitrary configuration, and does not exclude, for example, that the spacer 7 and the flow dividing substrate 9 having substantially flat surfaces on both sides are directly laminated. Although the rectification of the pressurized gas will be described later, in the present invention, the pressurized gas blown into the storage unit 44 can be rectified by the spinning nozzle peripheral side surface exposed inside the storage unit 44 and can be divided by the air nozzle.

  The nozzle substrate 6, the spacer 7, the diaphragm plate 8, and the flow dividing substrate 9 (hereinafter, these four members are also referred to as “four laminated members”) shown as an exploded perspective view in FIG. 2 are supported and fixed to the head 4. Is done. At this time, it is desirable that the spinning nozzle 31 and the air nozzle 40 corresponding to the spinning nozzle 31 are accurately aligned so as not to cause problems such as yarn breakage during spinning. The means for supporting and fixing the four laminated members to the head 4 and aligning the spinning nozzle 31 and the air nozzle 40 are not particularly limited. For example, the following means can be cited as one desirable embodiment.

That is, the head 4 stores an air supply path 11 a that guides the pressurized gas blown from the blower 10 to the air nozzle 40, and a liquid supply path 3 a that guides the spinning stock solution to the spinning nozzle 31. The substrate body 30 is provided with two or more alignment pin holes 33, and the bottom plate 53 (see FIG. 3) of the head 4 has alignment pins corresponding to the alignment pin holes 33, respectively. A retaining hole 55 (see FIG. 3) is provided. The nozzle substrate 6 can be aligned at a predetermined position with respect to the head 4 by inserting the alignment pin 54 (see FIG. 3) into the alignment pin hole 33 and the alignment pin retaining hole 55.
Furthermore, the board main body 30 and the flow dividing board 9 are provided with a plurality of bolt insertion holes 41 that communicate with each other in a stacked state. The diameter of the bolt insertion hole 41 provided in the flow dividing board 9 is formed smaller than the diameter of the bolt insertion hole 34 provided in the board body 30. The bottom plate 53 of the head 4 is provided with a threaded bolt retaining hole (not shown) corresponding to the bolt insertion holes 34 and 41. By inserting bolts into the bolt insertion holes 34 and 41 and the bolt retaining holes, the nozzle substrate 6 into which the pins are inserted and the flow dividing substrate 9 into which the bolts are inserted are aligned using only the bolts without using the pins. Compared to the case, it is possible to align with the head 4 with high positional accuracy.
In the present invention, the alignment pin is for aligning the position of the nozzle substrate with respect to the head. Therefore, for the purpose described above, the alignment pin broadly includes a rod-like body. Specifically, the alignment pin may be a so-called pin having a flat peripheral surface, or includes a bolt used for alignment. In the present invention, the positioning pin hole is a hole through which a so-called pin or positioning bolt is inserted, and the positioning pin retaining hole is a so-called pin or positioning pin. It is a retaining hole (stop hole) for inserting a bolt.

As shown in FIG. 3, the air supply path 11 a in the dry spinning apparatus according to the present embodiment has a barrier portion (first baffle plate 112, first wall) provided upright in a direction crossing the flow path of the pressurized gas. A second baffle plate 114).
By providing the barrier portion, the flow passage area of the air supply passage 11a is locally reduced, and the flow rate of the pressurized gas can be reduced.
The barrier portion can be provided at one place or two places or more in the flow path of the pressurized gas.
In this embodiment, two air supply passages 11 a that are opposed to each other through the spinning nozzle 31 are provided. Thus, when the air supply path 11a is provided with two or more by the spinning nozzle 31, a barrier part can be provided in each of each air supply path 11a. In the present embodiment, a pair of substantially identical barrier portions facing each other via the spinning nozzle 31 are provided as a pair, and the flow of pressurized gas flowing from the plurality of directions toward the spinning nozzle 31 is changed in the spinning nozzle 31. Balanced around.

More specifically, the barrier portion in the present embodiment is a plurality of baffle plates that change the flow direction of the pressurized gas. The plurality of baffle plates include a first baffle plate 112 and a second baffle plate 114. The first baffle plate 112 and the second baffle plate 114 are different in the direction of the vector from the base end portion in the standing direction.
The first baffle plate 112 is formed from the first inner wall surface of the air supply passage 11a (the upper surface of the storage portion 44 in the paper surface) and the second inner wall surface of the air supply passage 11a facing the first inner wall surface (the lower surface of the storage portion 44 in the paper surface). ).
The second baffle plate 114 is downstream from the first baffle plate 112 and extends from the second inner wall surface toward the first inner wall surface.
The second flow of the pressurized gas that passes between the second baffle plate 114 and the first inner wall surface is larger than the first flow passage area of the pressurized gas that passes between the first baffle plate 112 and the second inner wall surface. The road area is smaller. The first flow path area is calculated by multiplying the distance a from the standing front end of the first baffle plate 112 to the second inner wall surface by the width dimension of the storage section 44 (the dimension of the storage section 44 in the depth direction of the paper). The second flow path area is calculated by multiplying the distance b from the standing tip of the second baffle plate 114 to the first inner wall surface by the width dimension of the storage section 44 (the dimension of the storage section 44 in the depth direction of the paper).

  By providing the first baffle plate 112 and the second baffle plate 114 as the barrier portions, the flow of the pressurized gas is meandered, and the local reduction of the flow path area is gradually reduced in the downstream direction. It is possible to reduce the flow rate of the pressurized gas and promote rectification in the specified direction.

  As described above, in the dry spinning device 1 according to this embodiment, the second flow path area is smaller than the first flow path area. Furthermore, the sum of the cross-sectional areas of the air nozzles 40 whose diameter is the distance c in the flow dividing substrate 9 is smaller than the second flow path area. The air nozzle 40 shown in FIG. 3 has a constant distance c from the upstream direction to the downstream direction. For example, when the air nozzle 352 constitutes a reduced diameter portion from the upstream direction to the downstream direction as exemplified by the flow dividing substrate 350 shown in FIG. 17, the distance c is determined as follows. That is, the diameter of the most upstream side of the air nozzle 352 (that is, the diameter at the opening on the upstream side) is set as the distance c, and the sum of the cross-sectional areas of the air nozzle 352 is calculated and compared with the size of the second flow path area.

In this embodiment, the 1st baffle plate 112 and the 2nd baffle plate 114 which are a barrier part are installed in the inside of the storage part 44 provided in the air supply path 11a.
The first baffle plate 112 is a plate-like body having a substantially L-shaped cross section, and extends in the depth direction of the paper across the inner wall surfaces of the storage portions 44 facing each other through the flow path. The L-shaped long side of the baffle plate 112 is fixed along the upper surface side of the reservoir 44, and the L-shaped short side is provided upright in a direction intersecting the pressurized gas flow path. It is a barrier body.
The second baffle plate 114 is a plate-like body having a substantially L-shaped cross section, and extends in the depth direction of the paper surface between the inner wall surfaces of the storage portion 44 facing each other through the flow path. It is the same as the baffle plate 112. However, the second baffle plate 114 is a baffle plate 112 in that the side surface facing the downstream side of the barrier portion main body, which is an L-shaped short side, has an inclined surface 116 that is inclined along the outer side surface of the spinning nozzle 31. Is different. The inclined surface 116 forms a continuous inclined surface continuously with the reduced diameter portion of the diaphragm plate 8. In other words, the side surface facing the downstream side of the barrier portion (baffle plate) provided on the most downstream side is inclined along the outer side surface of the spinning nozzle 31, and a series of substantially continuous diameter-reduced portions in the throttle plate 8. The continuous inclined surface which is an inclined surface is comprised.
By configuring the continuous inclined surface, the flow path of pressurized gas along the spinning nozzle 31 becomes longer. That is, the distance between the reduced diameter portions in the direction of the flow path of the pressurized gas is substantially increased by the continuous inclined surface. Thereby, the pressurized gas is favorably rectified toward the tip direction of the spinning nozzle 31, and the rectification effect of the reduced diameter portion can be increased.

As shown in FIG. 1 or 2, the dry spinning apparatus 1 further includes a spacer 7 and a diaphragm plate 8 between the nozzle substrate 6 and the flow dividing substrate 9. As described above, when any other member is provided between the nozzle substrate 6 and the flow dividing substrate 9 and laminated together with the nozzle substrate 6 and the flow dividing substrate 9 and supported and fixed to the head 4, these arbitrary members are provided. Bolt insertion holes 35 and 38 are also provided in other members. The hole diameter of the bolt insertion hole 41 provided in the flow dividing board 9 is formed smaller than the hole diameter of the bolt insertion hole provided in any other member.
That is, the hole diameter of the bolt insertion hole 41 provided in the flow dividing substrate 9 is smaller than the diameters of the other bolt insertion holes 34, 35, and 38. On the other hand, the bottom plate 53 of the head 4 is provided with a threaded bolt retaining hole (not shown) corresponding to the bolt insertion holes 34, 35, 38, 41 that communicate with each other. The four laminated members can be supported and fixed to the head 4 by bolting to the bolt insertion holes 34, 35, 38, 41 that communicate with each other and the bolt retaining holes.

The above-described aspect of supporting and fixing the four laminated members to the head 4 and positioning includes the following excellent points.
First, the nozzle substrate 6 is accurately aligned with the head 4 by two or more alignment pins 54.
Second, among the bolt insertion holes 34, 35, 38, and 41 provided in each of the four laminated members, the diameter of the bolt insertion hole 41 in the flow dividing board 9 is formed smaller than the other hole diameters. For this reason, it is possible to accurately align the flow dividing substrate 9 with the head 4 while avoiding misalignment during bolting. In addition to this, it is possible to facilitate the bolting operation of the laminated members other than the flow dividing board 9.
Third, since the nozzle substrate 6 and the flow dividing substrate 9 are accurately aligned with respect to the head 4, respectively, the nozzle substrate 6 and the flow dividing substrate 9 are also indirectly aligned accurately.

FIG. 3 is a partially enlarged schematic cross-sectional view of the dry spinning apparatus 1 which is an embodiment of the present invention. A nozzle substrate 6, a spacer 7, a diaphragm plate 8, and a flow dividing substrate 9 are sequentially stacked and supported on the lower surface of the head 4, and a storage portion 44 is formed in a discharge unit main body including these. An alignment pin 54 is inserted into an alignment pin hole 33 provided in the nozzle substrate 6 and an alignment pin retaining hole 55 provided in the head 4, and the nozzle together with another alignment pin (not shown). The substrate 6 is aligned with the head 4.
As a configuration not shown in FIG. 1, an adhesion preventing layer 57 is provided on the bottom surface of the flow dividing substrate 9 and the bottom surface of the heat insulating layer 13. Further, the stock solution chamber 5 into which the spinning stock solution flows from the liquid supply passage 3a is equipped with a flow dividing auxiliary member 51 therein.

In FIG. 3, an image of the flow of pressurized gas in the discharge unit main body is indicated by a solid line arrow. That is, the pressurized gas blown out from a blower (not shown) is blown into the air supply path 11 a through the air supply pipe 11. A reservoir 44 is formed on the end of the air supply path 11a, and the pressurized gas is blown into the reservoir 44. The reservoir 44 is a space having a constant volume, and the pressurized gas blown into the reservoir 44 relaxes the air flow and averages the gas pressure. Therefore, even when the blower blow pressure fluctuates during the operation of the dry spinning apparatus 1 and the turbulence of the pressurized gas flow is caused, the turbulence of the airflow is affected before the spinning solution is stretched. Can be resolved.
In another aspect of the present invention (not shown), a baffle that faces the airflow direction of the pressurized gas may be provided in the reservoir 44. By providing the baffle plate, it is possible to facilitate the deceleration and mixing of the pressurized gas in the storage unit 44, and to reduce the time change of the pressure of the pressurized gas to average the gas pressure. In particular, the baffle plates may be provided so as to protrude alternately from the two surfaces facing the inner side surface of the storage portion. In this case, the gas pressure can be averaged more suitably, and the static pressure of the pressurized gas can be increased.

Further, a part of the circumferential side surface of the spinning nozzle 31 is exposed inside the storage portion 44. The tip of the spinning nozzle 31 passes through the throttle plate 8 and is located in one air nozzle 40 provided on the flow dividing substrate 9.
According to this configuration, the pressurized gas blown into the storage portion 44 is rectified by averaging the gas pressure as described above and flowing in the direction of the air nozzle 40 along the peripheral side surface. Then, the rectified pressurized gas is diverted by the air nozzles 40 formed in the diverted substrate 9. With such a series of flows, the yarn precursor 12 discharged and formed from the tip of the spinning nozzle 31 in the flow dividing substrate 9 can be satisfactorily and stably stretched. Therefore, the dry spinning apparatus 1 can provide stable spinning even when continuously operated for a long time.

  Also, according to the fact that the tip of the spinning nozzle 31 does not stick out the air nozzle 40, even if the yarn precursor is cut off during spinning and jumps up to the upper end side, it is difficult to adhere to the tip of the spinning nozzle 31. There is an effect. When the tip of the spinning nozzle 31 is contaminated with the yarn precursor 12, the discharge of the stable spinning solution is immediately prevented. In contrast, by positioning the tip of the spinning nozzle 31 upstream from the discharge side opening of the air nozzle 40, the problem of contamination is avoided and the dry spinning apparatus 1 contributes to continuous spinning for a long time.

  FIG. 3 shows a mode in which the tip of the spinning nozzle 31 is located inside the air nozzle 40. That is, the mode in which the tip of the spinning nozzle 31 is located within the thickness of the flow dividing substrate 9 including the air nozzle 40 is shown. According to such an embodiment, the yarn precursor immediately after being discharged and the pressurized gas are in contact with each other inside the air nozzle 40 and the periphery thereof is covered with the pressurized gas, so that the yarn precursor is opened downstream of the air nozzle 40. It can be extended outward. Therefore, stability can be added to the unstable yarn precursor immediately after discharge, and yarn breakage and rebound to the upstream side can be satisfactorily prevented. The present invention is not limited to the above embodiment as long as the tip of the nozzle body does not protrude from the air nozzle and at least a part of the peripheral side surface of the nozzle body is exposed to the inside of the reservoir. For example, as a different mode, a mode in which the tip of the spinning nozzle 31 does not enter the air nozzle 40 and is within the thickness of the throttle plate 8 which is a reduced diameter portion or located in the storage portion 44 is also included. Even in these embodiments, the pressurized gas whose gas pressure is averaged in the reservoir 44 is rectified in the direction of the air nozzle 40 by flowing along the peripheral side surface of the spinning nozzle 31, and is divided by the air nozzle 40. Is done. As a result, even in the different embodiments, good and stable drawing of the yarn precursor can be realized, and continuous spinning can be performed for a long time.

  As shown in FIG. 3, the spinning nozzle 31 includes a nozzle body 43 and a stock solution circulation hole 42 that is formed inside and feeds the spinning solution. A male screw 102 is formed on the head of the spinning nozzle 31. On the other hand, the nozzle substrate 6 is provided with a hole 101 for allowing the spinning solution to pass through. A female screw 103 corresponding to the male screw 102 is cut in the hole 101.

Therefore, the spinning nozzle 31 is detachably attached to the substrate body 30.
As is understood from FIG. 2, a plurality of spinning nozzles 31 are provided for the substrate body 30, and all the spinning nozzles 31 may be detachably attached, or only a specific spinning nozzle 31 may be attached or detached. It may be attached as possible.
Moreover, although the aspect using a screw structure was shown as a means which makes the spinning nozzle 31 detachable with respect to the board | substrate body 30 in FIG. 3, the said detachable means is not limited to this. For example, the head of the spinning nozzle 31 and the hole 101 may be formed so as to be fitted. By making the spinning nozzle 31 detachable from the substrate body 30, only the problematic spinning nozzle 31 can be replaced when the spinning nozzle 31 is clogged. Alternatively, when it is desired to change the fiber diameter of the yarn precursor, only a part or all of the spinning nozzle 31 can be replaced without changing the nozzle substrate 6 itself.
However, the present invention includes a mode in which the spinning nozzle 31 is integrally formed with the substrate body 30 without detaching the spinning nozzle 31 from the substrate body.

Further, the stock solution circulation hole 42 shown in FIG. 2 has a straight cylindrical shape with a substantially constant cross-sectional area, and consideration is given to smooth circulation of the spinning stock solution. However, the shape of the stock solution circulation hole 42 is not limited to this.
The dry spinning device of the present invention is not limited with respect to the fiber diameter of the yarn to be spun, and the fiber diameter of the spun yarn can be adjusted by adjusting the hole diameter on the discharge side of the stock solution circulation hole 42. Specifically, for example, a yarn having a fiber diameter of about 1 μm to 200 μm can be spun.
However, depending on the viscosity of the spinning dope, the optionally contained components, the fiber diameter of the yarn formed, etc., the spinning nozzle may be clogged. In such a case, a mode in which the hole diameter on the spinning solution inflow side of the spinning nozzle is made larger than the hole diameter on the discharge side to reduce the narrow portion of the nozzle may be employed. As an example of the above embodiment, the shape of the stock solution circulation hole 42a shown in FIG. 6 is effective.

That is, the stock solution circulation hole 42a is formed such that the hole diameter on the spinning stock solution inflow side of the spinning nozzle 31 (double-ended arrow a in the drawing) is larger than the hole diameter on the spinning stock solution discharge side (double-ended arrow b in the drawing). In addition, the straight cylindrical hole 104 extending from the spinning stock solution inflow side and the straight cylindrical hole 105 extending from the spinning stock solution discharge side may be continuous through a step.
The step here means a difference between the hole diameter on the spinning stock solution inflow side and the hole diameter on the spinning stock solution discharge side. The step may be a discontinuous step as shown in FIG. Alternatively, although not shown in the drawing, the step is a mode in which the hole on the spinning stock solution inflow side and the hole on the spinning stock solution discharge side are connected by a continuous inclination, and as a result, the relationship between the sizes of the hole diameters in the both occurs. May be.

The present invention is not limited to the embodiment shown in FIG. 6 because the hole diameter on the discharge side of the spinning nozzle that governs the fiber diameter of the yarn is reduced, while the hole diameter on the inflow side of the spinning dope is increased. For example, instead of the straight cylindrical hole 104 extending from the spinning stock solution inflow side, the portion may be tapered. Alternatively, the whole stock solution circulation hole 42a may be tapered.
However, as described above, since the fiber diameter of the yarn to be spun is very small, the production of the spinning nozzle 31 requires precision. In consideration of this point, the stock solution circulation hole has a discontinuous step between a straight cylindrical hole 104 extending from the spinning stock solution inflow side and a straight cylindrical hole 105 extending from the spinning stock solution discharge side shown in FIG. An embodiment in which the shape is continuous through is preferable. This is because the workability of the spinning nozzle 31 is improved and the production stability of the spinning nozzle 31 is excellent.

As shown in FIG. 6, the stock solution circulation hole 42a has a straight cylindrical hole that has a hole diameter d on the spinning stock solution inflow side of the spinning nozzle 31 larger than a hole diameter e on the spinning stock solution discharge side, and extends from the spinning stock solution inflow side. A straight cylindrical hole extending from the discharge side is continuous through a step.
According to such a configuration, it is possible to slow down the flow rate of the spinning dope flowing into the spinning nozzle 31 inside the spinning nozzle 31 and to satisfactorily spin a desired small-diameter yarn.
By designing the size of the hole diameter d on the inflow side of the spinning dope to be relatively large, the inflow of a viscous spinning dope such as a slurry-like spinning dope is made smooth.
Further, according to the aspect of relatively narrowing the hole diameter e, the distance of the small diameter inside the spinning nozzle 31 can be designed to be small, so that the possibility of clogging of the spinning dope inside the spinning nozzle 31 can be reduced. is there.
A spinning nozzle 31 shown in FIG. 6 is integrally formed with a portion including a hole diameter d and a hole diameter e. However, the configuration of the spinning nozzle 31 is not limited to this and may be formed by combining two or more elements. For example, although not shown in the drawings, the spinning nozzle 31 can also be configured from an upstream component including a large hole diameter d and a downstream component including a small hole diameter e. The upstream component and the downstream component are aligned and fixed to each other so that the holes communicate with each other. The fixing method is not particularly limited, but the downstream component is formed as a straight pipe, and the outer diameter of the pipe is fitted to the inner diameter of the hole diameter d, which is a large diameter provided in the upstream component. To fix each other. In order to stabilize the fixed state, the outer surface may be plated with the upstream component and the downstream component fitted.
The material constituting the spinning nozzle 31 is not particularly limited. For example, the spinning nozzle 31 can be formed by appropriately selecting from a metal material or a resin material. By selecting stainless steel, brass or the like as the metal material, it is excellent in terms of workability and heat resistance. Further, it is preferable to select a titanium-based material as the metal material because adhesion of the yarn precursor or the spinning dope to the spinning nozzle 31 can be prevented or reduced. When the spinning nozzle 31 is composed of a plurality of elements, it is preferable that the element located on the downstream side of the spinning nozzle (for example, the downstream side component) is composed of a titanium-based material.

  The hole diameter d, which is the large diameter portion, is designed to exceed one time the hole diameter e, which is the small diameter portion. Although the upper limit of the dimensional magnification of the hole diameter d with respect to the hole diameter e is not specifically limited, For example, it can be 5 times or less. By setting it to 5 times or less, the turbulent flow of the spinning dope at the step portion between the hole diameter d and the hole diameter e can be sufficiently reduced. From the viewpoint of reducing turbulence, the upper limit of the dimensional magnification is more preferably 4 times or less.

As an example of a preferred spinning nozzle 31 in the present embodiment, the aspect ratio of the stock solution circulation hole 42a is a ratio included in a range from 1: 5 to 1: 200, and included in a range from 1:10 to 1: 150. More preferably. The aspect ratio is obtained as a ratio of the distance (distance L shown in FIG. 6) from the opening on the spinning stock solution inflow side to the opening on the spinning stock solution outflow side with respect to the hole diameter of the stock solution circulation hole 42a extending inside the spinning nozzle 31. When the hole diameter of the stock solution circulation hole 42a is not uniform, the aspect ratio is determined from the ratio of the distance (distance L) to the thinnest hole diameter (minimum hole diameter). The minimum hole diameter in FIG. 6 is the hole diameter e in the hole 105.
For example, the aspect ratio of the spinning nozzle 31 of the aspect shown in FIG. For example, the hole diameter e can be designed to be (Y × 100) μm, and the distance L can be designed in the range of 510 to 200 times the above-described hole diameter e (Y is an integer of one digit).
The spinning nozzle 31 in which the aspect ratio is determined from the above range can smoothly flow the spinning stock solution inside the stock solution circulation hole 42a, and can reduce clogging of the nozzle tip.

  The stock solution circulation hole 42a has a large-diameter portion (hole diameter d) on the upstream side and a small-diameter portion (hole diameter e) on the downstream side. It is preferable to design the distance (L1) of the large diameter part (hole diameter d) larger than the distance (L2) of the small diameter part (hole diameter e). The ratio between L1 and L2 is not particularly limited, but can be determined in the range of distance L2: distance L1 = 1: 1.1 to 1: 5, for example. More preferably, it can be determined in the range of distance L2: distance L = 1: 2 to 1: 4. With this configuration, for example, even when a slurry-like spinning stock solution having a high viscosity is used, clogging of the spinning stock solution is reduced inside the spinning nozzle 31, and a yarn precursor having a small diameter (for example, about several hundred mm) is reduced. Can be discharged from the spinning nozzle 31. The slurry-like spinning stock solution may have a higher viscosity than the spinning stock solution in meltblowing. In addition, the yarn precursor formed using the slurry-like spinning stock solution can finally spin a yarn of 100 nm to 100 μm, for example, by removing the solvent by heating in a heating mechanism.

A modification of the spinning nozzle 31 that can be used in the present invention is shown in FIG. FIG. 18 is an enlarged cross-sectional view showing an embodiment of the spinning nozzle 31 used in the dry spinning apparatus 1 of the present invention.
The stock solution circulation hole 42a in the spinning nozzle 31 shown in FIG. 18 has a hole 106 whose inner diameter increases toward the downstream side in the tip region including the downstream opening. The hole 106 is continuous with the hole 105 having a small diameter. That is, the undiluted solution circulation hole 42a has a straight tube having a large diameter 104, a straight tube having a hole 105 having a relatively small diameter, and a hole 106 having a diameter increasing toward the downstream side. Is continuous.

The outer diameter of the spinning nozzle 31 is reduced toward the distal end in the downstream direction except for the region of the male screw 102. Thereby, the outer surface of the spinning nozzle 31 has a tapered shape. That is, the outer surface of the spinning nozzle 31 is inclined toward the tip direction of the spinning nozzle 31. As shown in FIG. 18, the inclination angle is constant around the hole 104 and the hole 105, and is slightly bent toward the 42 a side around the hole 106. Therefore, the flow path is adjusted so that the pressurized gas flowing in the downstream direction along the outer surface of the spinning nozzle 31 is blown toward the downstream opening in the vicinity of the tip of the spinning nozzle 31. The flow path of the pressurized gas is schematically indicated by an arrow s.
On the other hand, the spinning dope which has been flowed straight in the downstream direction by flowing through the hole 105 having a small diameter flows in the direction away from the center in the flow path direction by flowing through the hole 106 having an enlarged diameter. It is discharged while spreading.
The spinning stock solution discharged while spreading in the immediate vicinity of the downstream opening of the spinning nozzle 31 is constrained by the pressurized gas blown toward the downstream opening and is focused on the center in the flow path direction, and downstream. Pulls well in the direction. For this reason, the flow of the yarn precursor drawn in the downstream direction by the pressurized gas becomes good. According to such a configuration, the phenomenon that the yarn precursor discharged from the spinning nozzle 31 rebounds toward the upstream side in the vicinity of the tip of the spinning nozzle 31 can be prevented or reduced. In FIG. 18, the flow direction of the spinning dope is schematically indicated by an arrow t.

In the spinning nozzle 31 shown in FIG. 18, the distance (L2−L3) between the holes 105 is larger than the distance (L3) between the holes 106. The ratio of the distance (L2-L3) of the hole 105 to the distance (L3) of the hole 106 is preferably in the range of 1 to 2 times. The ratio of the distance L1 of the hole 104 to the distance L2 that is the sum of the distance of the hole 105 and the distance of the hole 106 is not particularly limited. For example, it can be determined in the range of distance L2: distance L1 = 1: 1.1 to 1: 5. More preferably, it can be determined in the range of distance L2: distance L = 1: 2 to 1: 4.
In such a preferable range, the length of the hole 105 and the length of the hole 106 are determined, whereby the spinning dope is well-flowed in the downstream direction and discharged from the downstream opening with an appropriate spread. Easy to be.

As shown in FIG. 18, the downstream opening of the hole 106 constitutes the downstream opening of the spinning nozzle 31. The hole diameter f of the downstream opening of the hole 106 is larger than the hole diameter e of the hole 105 and smaller than the hole diameter d of the hole 104. The stock solution circulation hole 42 a has a maximum upstream hole diameter d so that the spinning solution can easily flow into the spinning nozzle 31.
Since the hole diameter f of the downstream opening of the stock solution circulation hole 42a is designed to be larger than the hole diameter e in the intermediate region of the stock solution circulation hole 42a, the clogging of the spinning solution at the tip of the spinning nozzle 31 is satisfactorily spun or reduced. Is possible. In the present specification, the “hole diameter” sometimes includes the diameter in the opening area at the end of the hole.

  Next, the adhesion preventing layer 57a will be described. In the embodiment of the present invention shown in FIG. 3, an adhesion preventing layer 57 a is provided on the lower surface of the flow dividing substrate 9 and the lower surface of the heat insulating layer 13. However, the anti-adhesion layer in the present invention is not limited to the embodiment shown in FIG. 3, and the yarn precursor 12 is located in a region on the apparatus installation surface side from the spinning nozzle 31 tip and facing the apparatus installation surface. An adhesion preventing layer 57a may be provided.

  As described above, when the dry spinning apparatus is operated, yarn breakage of the yarn precursor may occasionally occur. In particular, when the spinning dope has a high viscosity, or when the spinning dope contains an arbitrary material such as powder, the yarn precursor that has broken the yarn tends to jump upward. Then, there is a large tendency of adhesion to a region on the apparatus installation surface side from the spinning nozzle tip and facing the apparatus installation surface. When the adhesion proceeds, an undesirable effect is exerted on the stretchability of the yarn precursor, or the elongation path of the yarn precursor is narrowed. As a result, the continuous operation of the dry spinning apparatus for a long time may be hindered. On the other hand, an adhesion preventing layer 57a of the yarn precursor 12 may be provided in a region on the installation surface side of the dry spinning apparatus 1 from the tip of the spinning nozzle 31 and facing the installation surface. Thus, by providing the adhesion preventing layer 57 in the region where the yarn precursor 12 is likely to adhere in advance, the above problem can be prevented or reduced, contributing to the realization of the dry spinning apparatus 1 for a long continuous operation. To do.

The adhesion preventing layer 57a may be a layer having lower adhesion and affinity with the yarn precursor 12 than the base constituting the base material surface for forming the adhesion preventing layer 57a. For example, it may be a layer containing a material having low adhesiveness and affinity with the yarn precursor 12, and the material constituting the adhesion preventing layer 57a is appropriately selected and determined according to the type of the spinning dope used. Good. In general, as the above material, a valve metal such as a titanium-based material or a chromium-based material or an oxide of the valve metal, or a fluororesin-based material known as Teflon (registered trademark) or the like is effective. Anti-adhesion effect is expected for this kind of spinning dope. Although the formation method of the adhesion preventing layer 57a is not particularly limited, a layer may be formed by coating a raw material containing the desired material in a desired region.
Further, in view of the purpose of the anti-adhesion layer 57a, a member itself including a region where the anti-adhesion layer 57a is desirably provided is a mirror-finished metal material or resin material, valve metal or oxide thereof, or fluororesin-based material. Alternatively, the yarn precursor 12 may be formed of a material that is difficult to adhere. At this time, when the region facing the installation surface of the dry spinning device 1 from the tip of the spinning nozzle 31 and facing the installation surface of the dry spinning device 1 is an adhesion preventing surface, the adhesion preventing surface is It is included in the adhesion preventing layer 57a in the present invention.

In addition to the adhesion preventing layer 57a, another layer or surface for preventing adhesion of the yarn precursor 12 is an arbitrary surface that is a path along which the yarn precursor 12 extends and faces the yarn precursor 12, Or you may provide at the front-end | tip part of the spinning nozzle 31 at least.
For example, in the dry spinning apparatus 1 shown in FIG. 3, the adhesion preventing layer 57 b is provided on the inner surface of the hole opened for the yarn precursor 12 to pass through in the heat insulating layer 13. By providing the adhesion preventing layer 57b on the surface along the extending direction of the yarn precursor 12 in this way, it is difficult for the yarn precursor 12 to easily adhere to the surface even when the flow of the yarn precursor 12 is disturbed. .
Further, in the dry spinning apparatus 1 shown in FIG. 3, an adhesion preventing layer 57 c is also provided around the upper end opening of the hole of the heat insulating layer 13. Since the distance between the upper surface of the heat insulating layer 13 and the tip of the spinning nozzle 31 is small, it is preferable to provide an adhesion preventing layer 57c to prevent the yarn precursor 12 from adhering. In particular, by providing the adhesion preventing layer 57c around the upper end opening of the hole opened for the yarn precursor 12 to pass through in the heat insulating layer 13, the narrowing of the opening of the hole due to the adhesion of the yarn precursor 12 can be avoided. it can. The adhesion preventing layer 57b and the adhesion preventing layer 57c may be appropriately selected from the same materials as those constituting the adhesion preventing layer 57a described above.
The adhesion preventing layers 57a, 57b, and 57c shown in FIG. 3 are formed as a continuous layer.

  Next, the flow dividing auxiliary member 51 will be described. FIG. 3 shows a cross section of a part of the flow dividing auxiliary member 51 provided in the stock solution chamber 5 and closest to the spinning stock solution inlet 52. FIG. 4 is further shown for explaining the flow dividing auxiliary member 51.

  FIG. 4 is a partially enlarged schematic cross-sectional view of the dry spinning apparatus 1 of the present invention including the stock solution chamber 5 and the nozzle substrate 6. Inside the undiluted solution chamber 5, a diversion assisting member 51 having a substantially circular cross section and having a thick center and a small diameter toward both ends is supported and fixed to the inner surfaces of both sides of the undiluted solution chamber 5 in the long axis direction. Installed. The method for installing the diversion assisting member 51 is not particularly limited. For example, it is configured in such a manner that one side surface portion in the major axis direction of the stock solution chamber can be opened and closed, and the diversion assisting member 51 can be taken in and out from the side surface portion. It may be.

The diversion assisting member 51 is installed in the stock solution chamber 5 provided between the spinning solution hopper and the spinning nozzle 31 (not shown in FIG. 3). The stock solution chamber 5 has a spinning stock solution inlet 52 through which the spinning stock solution flows and a spinning stock solution outlet 60 for supplying the spinning stock solution to the spinning nozzle 31. The stock solution chamber 5 stores the spinning stock solution supplied from the hopper and then diverts the spinning stock solution to the plurality of spinning nozzles 31.
The diversion assisting member 51 is thickest in the vicinity of the spinning dope inlet 52, and becomes thinner as the distance from the spinning dope inlet 52 increases. As a result, the clearance between the flow dividing auxiliary member 51 and the stock solution chamber 5 is minimal in the vicinity of the spinning stock solution inlet 52 and increases as the distance from the spinning stock solution inlet 52 increases.

  The dry spinning apparatus 1 includes a plurality of partitioned air nozzles 40 and a plurality of spinning nozzles 31 corresponding thereto. Therefore, the spinning dope needs to be diverted to the plurality of spinning nozzles 31 directly or indirectly through the liquid supply path 3a. Since the spinning dope is generally higher in viscosity than water or the like, the partial flow rate of the spinning dope flowing into the dosing chamber 5 is not good between the spinning nozzle 31 close to the spinning dope inlet 25 and the distant spinning nozzle 31. May be equal. Therefore, when the above-mentioned unevenness is concerned, it is possible to supply the spinning stock solution evenly to each of the many spinning nozzles 31 by installing the flow dividing auxiliary member 51 in the stock solution chamber 5. Therefore, the use of the flow dividing auxiliary member 51 contributes to the provision of stable spinning.

The dry spinning device 1 according to the present embodiment includes a pair of electrodes facing each other via a yarn precursor, and a current device for passing a current through the electrodes. When a current is passed through the electrodes by the current device, an electric field is generated between the electrodes, and the yarn precursor can be charged.
An example of the electrode is shown in FIG. The dry spinning apparatus 1 shown in FIG. 1 includes electrodes 801A and 801A, electrodes 801B and 801B, and electrodes 801C and 801C that face each other with a yarn precursor interposed therebetween.
That is, three pairs of electrodes are provided. Each electrode is a rod-shaped body, and extends in the back direction from the front side of the drawing in FIG. The pair of electrodes can be electrically connected by a current device (not shown). By passing a current through the electrode device, an electric field is generated between each electrode pair.
In the present embodiment, the pair of electrodes includes a mode in which one set is provided. However, by providing two or more pairs of electrodes as shown in FIG. 1, the charging effect of the yarn precursor can be increased.
By adding a positive charge from one electrode and a negative charge from the other electrode to the yarn precursor flowing between the pair of electrodes, a positively charged yarn precursor and Negatively charged yarn precursors can be mixed. In such a case, the positively charged yarn precursor and the negatively charged yarn precursor are electrically attracted and focused together. Therefore, scattering of the yarn precursor is spun and can be collected well.
When the yarn precursor is charged to either a positive charge or a negative charge, for example, a charge different from the charge of the yarn precursor is added to the collecting means such as the collecting drum 18. It is good to keep. Accordingly, the yarn precursor having a charge opposite to that of the collecting means having a positive or negative charge can be electrically attracted, and thus can be efficiently collected.

Two or more pairs of electrodes are preferably arranged in a lined direction in the flow direction of the yarn precursor via the yarn precursor.
In particular, it is preferable that the electrodes are respectively provided on the upstream side and the downstream side of the heating region 930 through which the yarn precursor passes through the heating mechanism (infrared heater 15) with respect to the intermediate position in the flow direction of the yarn precursor. . In FIG. 1, a pair of electrodes 801A and 801A are provided on the upstream side of the intermediate position, and a pair of electrodes 801B and 801B are provided on the downstream side. In addition, electrodes 801C and 801C are provided in pairs at a position corresponding to the intermediate position. According to this arrangement, the yarn precursor containing a large amount of solvent can be charged on the upstream side, and the yarn precursor (or yarn) having a relatively reduced solvent content can be charged. Can do.

Finally, the embodiment of the nonwoven fabric manufacturing apparatus of the present invention will be described by taking the nonwoven fabric manufacturing apparatus 21 shown in FIG. 1 as an example.
The nonwoven fabric manufacturing apparatus 21 includes the dry spinning apparatus 1 described above and a movable collection surface that collects the yarn 17 spun by the dry spinning apparatus 1.

  The nonwoven fabric manufacturing apparatus 21 of the present invention can enjoy the effects exhibited in the dry spinning apparatus 1 and can provide a nonwoven fabric production that is stable continuously for a long time. That is, the yarn precursor 12 formed in the dry spinning apparatus 1 is heated to remove the solvent by the infrared heater 15 to become the yarn 17. The yarn 17 that can be supplied stably and continuously for a long time by the dry spinning device 1 is wound between the collecting drums 18 and 18 having a movable collecting surface that rotate inward to each other, and an appropriate pressure is applied. It is done. Thereby, the yarns 17 are entangled with each other, and the nonwoven fabric 19 is manufactured. Further, if necessary, the nonwoven fabric 19 may be further heated and fired to adjust the moisture content in the nonwoven fabric 19 to produce a desired nonwoven fabric. For example, the nonwoven fabric 19 can be heated and fired at a temperature in the range of 500 ° C. to 1300 ° C., preferably 600 ° C. to 1200 ° C., more preferably 650 ° C. to 1100 ° C. Thereby, while the water | moisture content which remains in the nonwoven fabric 19 is lose | disappeared, the pullulan etc. which were used as a binder can be lose | disappeared.

  Each of the collecting drums 18 and 18 is a cylindrical rotary roll, and the surface thereof becomes a movable collecting surface for collecting the spun yarn 17. The surface of the collecting drum 18 may be a surface having substantially no gap or a network structure as long as the yarn can be collected and entangled between the collected yarns. Well, it is not limited to this. The partial area constituting the movable collection surface faces the spinning nozzle 31 intermittently at predetermined time intervals. Thus, the yarns 17 are continuously discharged from the spinning nozzle 31 to the movable collection surface, whereby the yarns 17 are laminated in a multilayer on the movable collection surface.

The example of the aspect from which the movable collection surface in the nonwoven fabric manufacturing apparatus 21 differs is shown in FIG. The drum roll 58 in FIG. 5A is composed of one rotating roll. A drum roll 58, which is a cylindrical rotary roll, is installed so that its rotation axis is substantially perpendicular to the direction in which the yarn 17 extends. To produce non-woven fabric. The entanglement between the yarns 17 can be carried out by applying pressure in the surface direction to the yarn bundle or by appropriately heating the yarn bundle, but is not limited thereto.
The rotary table 59 in FIG. 5B is composed of a disc. The rotary table 59 collects the yarn 17 extending from above, with the surface on one side of the circle serving as a collection surface. The center of the rotary table 59 is rotatably supported. Since the collecting surface of the yarn 17 is movable by rotating the disc, when the disc is rotated once, the collected plural yarns 17 have a donut shape on the rotary table 59. In other words, the partial region constituting the movable collection surface faces the spinning nozzle 31 intermittently at predetermined time intervals. Thus, the yarns 17 are continuously discharged from the spinning nozzle 31 to the movable collection surface, whereby the yarns 17 are laminated in a multilayer on the movable collection surface. By rotating the rotary table 59 while continuously collecting the yarn 17, a thick donut-shaped multilayer nonwoven fabric is manufactured. Also in this case, in order to sufficiently entangle the yarns 17, any means such as appropriately heating or applying pressure to the donut-shaped nonwoven fabric may be further implemented.

The composition of the yarn spun by the dry spinning apparatus 1 of the present invention is not particularly limited, and any spinning stock solution applicable to a general dry spinning apparatus may be used.
Examples thereof include synthetic fibers such as cellulose acetate fibers, ethylene / tetrafluoroethylene fibers, and alumina fibers, and fibers formed using water-soluble polysaccharides such as pullulan fibers. Any of them is preferably soluble in an appropriate solvent. Of course, as long as the physical properties of the yarn are not affected, a spinning stock solution in which a part or all of the material is melted may be used.
Spinning can also be performed using a spinning solution in which an arbitrary particulate material is mixed in a solvent. For example, apatite is expected to be used in the medical field as a bone filling material for bone regeneration. By mixing particulate apatite with a solvent and using it in the dry spinning apparatus or nonwoven fabric manufacturing apparatus of the present invention, it is possible to continuously manufacture excellent apatite fibers or apatite nonwoven fabrics for a long time. When preparing a spinning dope using apatite particles, a water-soluble fibrous polymer compound may be used as a binder. For example, pullulan, polyvinyl alcohol, polyacrylamide, carboxymethyl cellulose, polyacrylic acid, collagen, xanthan gum, gar gum and the like, which are linear glucans in which maltotriose is repeatedly bonded by α-1,6-glucooxide bonds, can be mentioned. . When using apatite fiber or apatite nonwoven fabric as a medical material, from the viewpoint of harmlessness and sufficient water solubility, the binder is preferably polyvinyl alcohol, carboxymethylcellulose, collagen, and pullulan. A polysaccharide such as pullulan, which is edible, is more preferable.

  When preparing a spinning dope using apatite particles, it is preferable to use an appropriate dispersant. When a dispersant is used, it is possible to prepare a slurry-like spinning dope containing apatite particles. The dispersant for the apatite particles may be appropriately selected from materials that can be used as a dispersant for ceramics, for example. More specific examples of the ceramic dispersant include an anionic surfactant and a citric acid-based dispersant. Moreover, as for the commercially available dispersing agent used suitably as a dispersing agent of the said apatite particle, SN dispersant 2060 (made by San Nopco) etc. exists, for example. Fine particle dispersants represented by neutralized polyphosphate amino alcohol and the like, including the above-mentioned commercially available products, are also suitable as the dispersant for the apatite particles. However, the dispersant for the apatite particles is not limited to the description in this paragraph.

The dry spinning apparatus of the present invention is also suitable for spinning a pullulan fiber using pullulan as a main raw material. That is, the dry spinning apparatus of the present invention can be suitably spun using a polysaccharide such as apatite and pullulan as a main raw material. The pullulan fiber includes a thread-shaped body produced by the dry spinning apparatus of the present invention, an aggregate formed by assembling the thread-shaped body, and a nonwoven fabric. The pullulan fiber also includes a single fiber or a powder obtained as an intermediate of a thread-shaped body formed by the dry spinning apparatus of the present invention, an aggregate formed by assembling the thread-shaped body, and a nonwoven fabric.
In order to obtain the pullulan fiber according to the present invention, for example, a spinning stock solution containing pullulan as a main component of solute can be used, and for example, a spinning stock solution containing substantially only pullulan as a solute can be used. For example, when the material contained as a solute in the spinning dope is 100% by mass, the pullulan fiber has a high purity of 80% by mass or more, preferably 90% by mass or more, more preferably 95% by mass or more. Can be produced by using the stock solution for spinning. In addition, by the dry spinning apparatus or spinning method of the present invention, pullulan fibers that are substantially 100% pullulan can be provided. Here, “substantially” means that a general filler such as a preservative or a plasticizer may be included.
The pullulan described above is an example of a polysaccharide, and can be appropriately replaced with a polysaccharide other than pullulan. For example, even if it is a polysaccharide that can exhibit higher viscosity than other resin materials when it is contained in the spinning dope, or a polysaccharide that is easily denatured by heating in the spinning process, it is spun by the dry spinning device of the present invention. Is possible.

  A spinning dope containing fine particles such as apatite particles tends to have a high viscosity, tends to break during spinning, and tends to jump upward when the yarn breaks. Therefore, the above-mentioned problems are remarkable when continuous spinning is attempted for a long time. However, with the dry spinning device and the nonwoven fabric manufacturing device of the present invention, stable spinning can be performed continuously for a long time as described above. Therefore, the effect of the present invention is more remarkably exhibited by producing an apatite fiber or an apatite non-woven fabric using a spinning stock solution containing apatite particles in the practice of the present invention.

[Modification of First Embodiment]
A modification of the first embodiment of the present invention will be described with reference to FIG.
FIG. 17 is a partially enlarged schematic cross-sectional view of a modified example of the dry spinning apparatus 1 according to the first embodiment. The head 4 a shown in FIG. 17 is provided with a second liquid supply pipe 912 that continues from the downstream opening of the stock solution chamber 5 to the spinning nozzle 31. The second liquid supply pipe 912 is a straight tubular liquid supply path, and is provided in the spinning nozzle 31 correspondingly for diverting the spinning raw liquid from the raw liquid chamber 5 to each spinning nozzle 31. A fixing portion 914 for detachably fixing the spinning nozzle 31 is provided at the downstream end portion of the second liquid supply pipe 912. In the fixing portion 914 shown in FIG. 17, a female screw for screwing the male screw 102 (see FIG. 6) provided at the upper end of the spinning nozzle 31 is provided on the inner wall surface at the downstream end portion of the second liquid supply pipe 912. It becomes. However, the fixing portion 914 is not limited to this, and any mechanism that can detachably fix the upper end of the spinning nozzle 31 such as a fitting structure or a locking structure can be adopted as appropriate.

A cooling mechanism 916 is provided around the second liquid supply pipe 912 inside the head 4a. The cooling mechanism 916 is provided between the stock solution chamber 5 and the spinning nozzle 31. The cooling mechanism 916 can adjust the temperature of the air atmosphere inside the head 4a to an appropriate temperature range. In order to adjust the temperature of the spinning nozzle 31, a cooling mechanism 916 may be provided between the stock solution chamber 5 and the spinning nozzle 31 and closer to the spinning nozzle 31. For example, the cooling mechanism 916 can be disposed at a position closer to the upstream end of the spinning nozzle 31 than the intermediate position of the distance from the downstream end of the stock solution chamber 5 to the upstream end of the spinning nozzle 31. The spinning nozzle 31 may receive unscheduled heating upon receiving heat from the heating mechanism, and the spinning stock solution flowing through the stock solution circulation hole 42 may dry out and cause clogging. On the other hand, by providing the cooling mechanism 916, it is possible to maintain the spinning nozzle 31 at an appropriate temperature directly or indirectly and suppress the occurrence of clogging.
The cooling mechanism 916 shown in FIG. 17 is configured by circulating cold water through a cooling pipe or a cooling pipe extending from the front side of the paper to the back side. The cooling medium is not limited to cold water. For example, a gas cooled to an appropriate temperature may be used as the cooling medium. For example, the cooling mechanism 916 draws the cooling pipe or the cooling pipe to the outside of the head A, connects it to a heat exchanger installed outside, constructs a circulation path, and circulates the cooling solvent in the circulation path. be able to. The cooling mechanism 916 can appropriately apply the above-described aspect of the cooling pipe 110.

The spinning nozzle 31 provided in the head 4 a is the same as the head 4 described above in that pressurized gas is blown from the air supply path 11 a connected to the air supply pipe 11. However, the air supply path 11a in the head 4a differs from the head 4 in the point of the structure of a storage part.
That is, in the head 4a shown in FIG. 17, the tubular air supply path 11a (111) is connected to the air supply pipe 11 at the wall portion of the head 4a and extends in one direction (left and right direction on the paper surface). The downstream end of the tubular air supply path 11a (111) is connected to the air supply path 11a (918) which is a storage part. The air supply path 11a (918) and the tubular air supply path 11a (111) are bent and continuous. The air supply path 11a (918) extends in a direction (vertical direction in the drawing) different from the extending direction of the tubular air supply path 11a (111), and the boundary between the two is bent. For example, the angle of bending is approximately 90 °.
The air supply passage 11a (918), which is a storage portion, forms a wide tube whose flow area is expanded in the same direction as the nozzle line extending direction in which a plurality of spinning nozzles 31 are arranged in one direction (illustrated). (Omitted). A cut surface obtained by cutting the air supply passage 11a (918), which is a storage portion, perpendicularly to the flow path direction has a long hole shape extending in the extending direction of the nozzle line. The air supply path 11a has a larger volume per unit distance in the flow direction of the pressurized gas in the air supply path 11a (918) than the tubular air supply path 11a (111). As a result, a reservoir is configured in the air supply path 11a (918). The effect as a storage part in the air supply path 11a (918) is the same as that of the storage part 44 mentioned above.

The air supply path 11a (918) is inclined toward the front end side of the spinning nozzle 31 from at least an intermediate position in the flow path direction to the downstream end while ensuring a wide tube shape substantially parallel to the nozzle line. ing. Therefore, the pressurized gas is blown into the air supply passage 11a (918) and can be rectified again toward the spinning nozzle 31 while being mixed in the expanded flow passage.
The air supply path 11a (918) continues to the spinning nozzle 31. The pressurized gas flowing through the air supply path 11 a is diverted for each spinning nozzle 31 by the air nozzle 352 in the diversion substrate 350.

The air nozzle 352 provided on the flow dividing substrate 350 forms a reduced diameter portion that is reduced in diameter along the outer surface of the spinning nozzle 31. The tip of the spinning nozzle 31 does not stick out from the air nozzle 352 in the downstream direction, and is positioned at an intermediate position in the flow path direction of the 352. Since the air nozzle 352 forms a reduced diameter portion, the diaphragm plate 8 can be omitted in the head 4a. The tip of the spinning nozzle 31 is located within the thickness of the flow dividing substrate 350 provided with the air nozzle 352.
A compensation plate 920 for filling a space is provided between the flow dividing board 350 and the air supply path 11a. The compensation plate 920 is located on the upper surface side of the flow dividing substrate 350 and has an inclined surface along the air supply path 11a. The air supply path 11a is stably supported by the compensation plate 920, and it is possible to avoid that the outside air temperature directly affects the gas passing through the inside of the air supply path 11a.
At the upstream opening of the air nozzle 352, there is provided an opening convex portion 910 which is a barrier portion provided upright in a direction crossing the flow path of the pressurized gas. The opening convex portion 910 is an O-ring-shaped convex portion provided at the upstream opening in each of the air nozzles 352. The inner surface of the opening convex portion 910 enlarges the reduced diameter portion by forming an inclined surface continuous with the inclination of the air nozzle 352 forming the reduced diameter portion. When the reduced diameter portion is configured by the air nozzle 352 and the inner side surface of the opening convex portion 910, the reduced diameter portion is enlarged and the rectifying effect of the pressurized gas is increased.
When the pressurized gas is diverted from the air supply path 11a (918) to the air nozzle 352, a part of the pressurized gas collides with the opening convex portion 910, and the flow velocity is reduced. The pressurized gas having a reduced flow rate is rectified when flowing between the spinning nozzle 31 and the air nozzle 352, and the yarn precursor discharged from the spinning nozzle 31 can be smoothly guided in the downstream direction. Moreover, since the tip of the spinning nozzle 31 does not protrude from the air nozzle 352, the yarn precursor immediately after discharge can be surrounded by the rectified pressurized gas and desirably stretched in the downstream direction.

The dry spinning apparatus 1 of the present invention may have the heat insulating layer 13 as described above. For example, as shown in FIG. 17, the heat insulating layer 13 may have a flow passage 922 through which gas can flow at an intermediate position in the flow path direction. By blowing a gas such as air from the flow passage 922 toward the yarn precursor, it is possible to prevent heat from being transferred from the heating mechanism to the spinning nozzle 31 side.
As shown in FIG. 17, in the flow passage 922, the end region on the yarn precursor side is bent in the downstream direction. By the bending, the gas blown from the flow passage 922 to the yarn precursor side can be circulated in the downstream direction. As a result, the yarn precursor can be stretched in a desired posture in the downstream direction.
The flow passage 922 is a gas flow passage provided inside the heat insulating layer 13 and is a hole penetrating a side surface facing the yarn precursor and an arbitrary surface other than the side surface facing the yarn precursor. is there.

According to the spinning device of the present invention described above, the spinning method of the present invention can be suitably realized.
That is, the dry spinning apparatus used in the spinning method of the present invention includes a blower 10 that blows out a pressurized gas for drawing a yarn precursor, a spinning nozzle 31 that discharges the spinning stock solution to form the yarn precursor, an in-plane In addition, there are provided a flow-dividing substrate 9 in which a plurality of air nozzles 40 are formed, and a discharge section main body provided with an air supply path 11 a for guiding the pressurized gas blown from the blower 10 to the air nozzle 40. In addition, the dry spinning apparatus includes a heating mechanism (infrared heater 15) for heating and removing the solvent contained in the yarn precursor, and one or a plurality of spinning nozzles 31 are provided for the plurality of air nozzles 40. They are arranged corresponding to each other.
In the spinning method of the present invention using the spinning device, the spinning solution is circulated through the stock solution circulation hole 42a provided in the nozzle body 43 of the spinning nozzle 31, and the nozzle body is located before the opening on the downstream side of the air nozzle 40. A yarn precursor forming step of forming a yarn precursor by discharging a spinning dope from the tip of 43;
After performing the yarn precursor forming step, the formed yarn precursor is guided downstream by the pressure of the pressurized gas flowing through the air nozzle 40 and discharged from the opening of the air nozzle 40.
Next, the yarn precursor discharged from the opening of the air nozzle 40 is heated by a heating mechanism (infrared heater 15). As described above, the yarn spinning method of the present invention can spin a yarn.

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to FIGS. FIG. 7 is a schematic diagram illustrating a dry spinning apparatus 201 according to the second embodiment. FIG. 7 also shows a non-woven fabric production apparatus 221 configured to further include a collection drum 18 in the downstream region of the dry spinning apparatus 201.
The dry spinning apparatus 201 includes a blower 10 that blows out a pressurized gas for stretching the yarn precursor 12, a discharge unit main body that is provided with a spinning nozzle 31 that discharges a fiber stock solution to form the yarn precursor 12, and a yarn precursor. A heating mechanism (infrared heater 15) for heating and removing the solvent contained in the body 12 is provided.
In the dry spinning apparatus 201, two rows of nozzle lines 400 (see FIG. 2) in which a plurality of spinning nozzles 31 are arranged in one direction are provided in parallel. This embodiment includes a mode in which three or more nozzle lines 400 are arranged in parallel.
The dry spinning apparatus 201 is configured such that the yarn precursor 12 discharged from one nozzle line 400 and the yarn precursor 12 discharged from another nozzle line 400 adjacent thereto are brought into contact with each other.
FIG. 7 schematically shows a state in which the yarn precursors 12 ejected from two directions come into contact with each other due to the configuration of the above-described apparatus to become the yarn precursor 12 that has an apparently large fiber diameter.
Here, “to be brought into contact with” means that the yarn precursor 12 discharged from one nozzle line 400 by the function of the dry spinning device 201 itself within the range of operating conditions in which the dry spinning device 201 can spin, Means that the yarn precursor 12 discharged from another nozzle line 400 adjacent to is in contact with or close enough to be contactable.

According to the dry spinning apparatus 201, the yarn precursors 12 ejected and formed from the spinning nozzles 31 gather together to make the yarn precursors 12 thick. The yarn precursors 12 gathered close together may be partially bonded. As a result, it is possible to prevent problems such as the yarn precursor 12 being cut before becoming a yarn or floating in a direction other than the desired spinning direction.
Thereby, particularly when the yarn precursor 12 having an extremely fine fiber diameter of less than 10 μm is discharged from the spinning nozzle 31, it is possible to satisfactorily prevent undesired cutting and floating to the surroundings. Undesirable cutting means that the yarn precursor 12 breaks in a spinning region where it is not expected to be cut.
Moreover, the dry spinning apparatus 201 has a plurality of nozzle lines 400 and is configured to bring the yarn precursor 12 discharged from one nozzle line 400 and the yarn precursor 12 discharged from the other nozzle line 400 together. For this reason, the yarn precursors 12 tend to gather together.
The yarn precursor 12 discharged from one nozzle line 400 and the yarn precursor 12 discharged from the other nozzle line 400 can be composed of a spinning stock solution having the same composition.
At this time, the viscosities of the spinning dope led to one nozzle line 400 and the spinning dope led to the other nozzle line 400 may be substantially the same. Thereby, the yarn precursor 12 having a substantially uniform fiber diameter can be discharged from any nozzle line 400, and an entangled body of yarns having approximate fiber diameters can be obtained.
Alternatively, the spinning stock solution guided to one nozzle line 400 may be different from the viscosity of the spinning stock solution guided to another nozzle line 400. As a result, the fiber diameter of the yarn precursor 12 formed by discharging a relatively high-spinning stock solution from the nozzle line 400 is reduced, and the yarn precursor 12 formed by discharging a relatively low-spinning stock solution from the nozzle line 400. It is possible to make it thicker than the fiber diameter. The yarn precursor 12 made of a spinning solution having a relatively high viscosity tends to be a thick yarn precursor 12 that is stronger and has a larger fiber diameter. It is also possible to obtain an entangled body of yarns having different fiber diameters by entwining a thin yarn precursor 12 made of a spinning stock solution having a relatively low viscosity with the large-diameter yarn precursor 12. Moreover, it is possible to manufacture rod-shaped fibers having different fiber diameters by suppressing the air blowing from the side surface direction of the yarn precursor 12. Here, the rod-like fibers are one or several fiber bodies in which the yarn precursors 12 discharged from a plurality of nozzles are gathered together, and include extremely thick fibers.
That is, in the dry spinning apparatus according to various aspects of the present invention disclosed in the present specification, when two or more spinning nozzles are provided, it is possible to produce yarns by unifying the viscosity of the spinning solution sent to each spinning nozzle. Or as another aspect, when it has two or more spinning nozzles as mentioned above, the viscosity of the spinning dope sent to any or all of the two or more spinning nozzles can be made different to produce a yarn.

The dry spinning apparatus 201 is configured in the same manner as the dry spinning apparatus 1 except that it includes two sets of discharge unit main body portions shown in the dry spinning apparatus 1 described above. Therefore, regarding the dry spinning apparatus 201, the description of the configuration common to the dry spinning apparatus 1 is omitted here. In the second embodiment, the discharge unit main body is different from the dry spinning apparatus 1 in that at least the spinning nozzle 31 is required and other configurations can be omitted as appropriate.
In addition, in FIG. 7, the example which provided the hopper 2 and the blower 10 for every discharge part main body was shown. As a modified example of the present embodiment, the air supply pipes 11 in the plurality of discharge unit main body portions can be connected to each other at an arbitrary position so as to communicate with one blower 10. In other words, the pressurized gas may be sent from one blower 10 shared by a plurality of discharge unit main body parts and supplied to each discharge unit main body. Moreover, it can also comprise so that each liquid supply pipe | tube 3 in a some discharge part main-body part may be joined at arbitrary places, and it may lead to one hopper 2. FIG. In other words, the spinning dope can be sent from one hopper 2 shared by a plurality of discharge unit main body parts, and this can be sent to each discharge unit main body.

As shown in FIG. 7, the dry spinning apparatus 201 is arranged such that the tip of each spinning nozzle 31 in one nozzle line 400 faces the tip of each spinning nozzle 31 in another nozzle line 400 adjacent thereto. ing.
Accordingly, the dry spinning apparatus 201 is configured such that the yarn precursor 12 discharged from one nozzle line 400 and the yarn precursor 12 discharged from another nozzle line 400 adjacent thereto are brought into contact with each other. can do.

  Here, “the tip of the spinning nozzle 31 faces” includes a mode in which the tip of the spinning nozzle 31 in one nozzle line 400 faces the tip of the spinning nozzle 31 in another nozzle line 400. In addition to this, the spinning nozzles 31 may be arranged so that the tips of the spinning nozzles 31 face each other by inclining each other toward the center side in the arrangement direction of the adjacent nozzle lines 400.

For example, the dry spinning apparatus 201 according to this embodiment can include a plurality of nozzle substrates 6 in the discharge unit main body. More specifically, for example, as described above with reference to FIG. 7, two nozzle substrates 6 can be provided by providing two sets of discharge unit bodies including one nozzle substrate 6.
Or although illustration is omitted, two nozzle substrates 6 can also be provided in one discharge part main part.

The nozzle substrate 6 used in the dry spinning apparatus 201 is the same as the nozzle substrate 6 used in the dry spinning apparatus 1. That is, the nozzle substrate 6 includes a substrate body 30 and one or more nozzle lines 400 provided on one surface of the substrate body 30 (see FIGS. 2 and 3). In the nozzle substrate 6, the nozzle center axis of each spinning nozzle 31 in the plurality of nozzle lines 400 is oriented in a substantially normal direction with respect to the substrate body 30.
The intersection angle (that is, the inner angle of the two surfaces) between the surface of one nozzle substrate 6 on which the spinning nozzle 31 is provided and the surface of other nozzle substrate 6 on which the spinning nozzle 31 is provided is less than 180 °. The installation angle of the nozzle substrate 6 is adjusted. As a result, the tips of the spinning nozzles 31 provided on each nozzle substrate 6 can face each other.

In order to install the nozzle substrate 6 at a desired installation angle, for example, as shown in FIG. 7, it is possible to adjust the installation angle between two sets of ejection unit bodies including one nozzle substrate 6.
Alternatively, although not illustrated, two nozzle substrates 6 may be provided in one discharge unit body, and the installation angles of the two nozzle substrates 6 themselves may be adjusted inside the discharge unit body. That is, two nozzle substrates 6 having an intersecting angle of the above surfaces of less than 180 ° may be provided in one discharge unit main body. In such a case, the installation angle of other configurations (arbitrary laminates laminated on the nozzle substrate 6) attached to the nozzle substrate 6 is adjusted together with the nozzle substrate 6.

  According to the dry spinning apparatus 201 according to this embodiment, the attachment angle of the spinning nozzle 31 with respect to the substrate body 30 can be fixed. Therefore, by adjusting the angle of the nozzle substrate 6 to which the angle of the spinning nozzle 31 is fixed without adjusting the angle of the spinning nozzle 31 itself, the tips of the spinning nozzles 31 provided on each nozzle substrate 6 face each other. be able to. That is, the nozzle line 400 composed of a plurality of spinning nozzles 31 can be unitized with respect to the substrate body 30, and using this, the tip of the spinning nozzle 31 provided on each nozzle substrate 6 is easily faced. It is possible.

  Specifically, in an aspect in which the nozzle substrate 6 or the discharge unit main body including the nozzle substrate 6 is adjusted so that the tip of the spinning nozzle 31 faces the nozzle substrate 6 or the discharge unit main body including the nozzle substrate 6, The nozzle substrate 6 used in one embodiment can be used. Therefore, it is not necessary to change the design of the nozzle substrate 6 or the discharge unit main body including the nozzle substrate 6 for each desired angle at which the spinning nozzle 31 faces.

  In addition, an angle adjustment mechanism that can adjust the installation angle in a state where the nozzle substrate 6 or the discharge unit body including the nozzle substrate 6 is installed in the dry spinning apparatus 201 can also be provided.

Next, a modification of the second embodiment will be described with reference to FIGS. FIG. 8 is an exploded perspective view of a spinning solution discharge portion used in a dry spinning apparatus which is a modification of the second embodiment. FIG. 9 is a side view of the nozzle substrate 310 when observed from the direction of arrow A in FIG.
An example of a dry spinning apparatus which is a modification of the second embodiment can be configured similarly except that the nozzle substrate 310 is used instead of the nozzle substrate 6 in the dry spinning apparatus 1 described above. Here, an overall configuration diagram of a dry spinning apparatus which is a modification of the second embodiment is omitted, and the nozzle substrate 310 is shown in FIGS. 8 and 9. Regarding the dry spinning apparatus which is a modified example of the second embodiment, the description of the same configuration as the dry spinning apparatus 1 will be omitted, and the nozzle substrate 310 will be mainly described.

That is, the dry spinning apparatus which is a modified example of the second embodiment includes the nozzle substrate 310 in the discharge unit main body. As shown in FIG. 8, the nozzle substrate 310 includes a substrate body 30 and a plurality of nozzle lines 311 provided on one surface of the substrate body 30. The nozzle center axes of the plurality of spinning nozzles 31 in one nozzle line 311 are inclined in the same direction with respect to the substrate body 30. Similarly, the nozzle center axes of the plurality of spinning nozzles 31 in the other nozzle lines 311 are inclined in the same direction with respect to the substrate body 30.
As a result, as shown in FIG. 9, the tip of the spinning nozzle 31 in one nozzle line 311 and the tip of the spinning nozzle 31 in the other nozzle line 311 face each other.

  The nozzle substrate 310 is provided with two rows of parallel nozzle lines 311 in which the spinning nozzles 31 are regularly arranged in one direction. The spinning nozzles 31 in the nozzle substrate 310 are inclined toward the center in the arrangement direction of the two rows of nozzle lines 311, and the tips of the spinning nozzles 31 facing each other in each nozzle line 311 are facing each other. The number of spinning nozzles 31 in each nozzle line 311 may be the same or different. For example, the number of spinning nozzles 31 may be the same, and there may be a pair of spinning nozzles 31 that face each other.

The dry spinning apparatus, which is the above-described modified example including a plurality of nozzle lines 311, is configured such that the tip ends of the paired spinning nozzles 31 face each other in advance in the mounted nozzle substrate 310. Therefore, the dry spinning apparatus according to the modification does not require adjustment of the installation angle of the nozzle substrate 310 with respect to the apparatus when the nozzle substrate 310 is mounted on the dry spinning apparatus. Therefore, it is possible to omit the fine alignment adjustment that the ends of the spinning nozzles 31 face each other when assembling the apparatus.
In this embodiment, the inclination angle of the spinning nozzle 31 with respect to the substrate body 30 can be determined in advance before assembling the apparatus. As for the spinning nozzle 31, the attachment angle with respect to the board | substrate body 30 may be fixed, and the attachment angle may be adjustable.

Note that the spinning solution discharge portion in the dry spinning apparatus which is a modification of the second embodiment has at least a nozzle substrate 310, and optionally includes a spacer 7, a diaphragm plate 380, and a flow dividing substrate 390 as shown in FIG. Can be provided.
The diaphragm plate 380 has a diaphragm hole 36 expanded so that a plurality of parallel nozzle lines 311 can be inserted to an appropriate position with respect to the diaphragm plate 8 in the dry spinning apparatus 1.
Further, the position and number of the air nozzles 40 in the flow dividing substrate 390 are changed with respect to the flow dividing substrate 9 in the dry spinning apparatus 1 so as to correspond to the tips of the spinning nozzles 31 in the plurality of nozzle lines 311 arranged in parallel.

The spinning nozzle 31 in the nozzle substrate 310 may be directly attached to the substrate body 30. For example, similarly to the spinning nozzle 31 shown in FIG. 3, the spinning nozzle 31 can be attached to the substrate body 30 by a screw structure.
Alternatively, although not shown, the spinning nozzle 31 may be attached to the substrate body 30 via a connecting portion that connects the substrate body 30 and the spinning nozzle 31. For example, when the connecting portion is attached to the substrate body 30, the bonding surface (I) with the substrate body 30 is substantially horizontal to the substrate body, while the bonding surface (II) with the spinning nozzle 31 is the spinning nozzle. 31 is substantially horizontal with respect to the base end face. In addition, the connecting portion can be configured such that the joint surface (I) and the joint surface (II) are not horizontal.
Moreover, as a different connection part, the said joint surface (I) and the said joint surface (II) may be horizontal, and the nozzle center axis line of the spinning nozzle 31 attached with respect to the said joint surface (II) may be inclined.
The connecting portion may be provided with one connecting portion for one spinning nozzle 31. The connecting portion may be a pedestal on which a plurality of spinning nozzles 31 are arranged in one direction. It is also possible to attach a plurality of spinning nozzles 31 constituting one nozzle line 400 to the pedestal, unitize the nozzle lines 400, and attach the pedestal to the substrate body 30.
The central axis of the spinning nozzle 31 can be inclined with respect to the surface of the substrate body 30 by way of the connecting portion.

  The dry spinning apparatus 201 includes a first surface including the nozzle center axes of the plurality of spinning nozzles 31 in one nozzle line 400 and a nozzle center axis of the plurality of spinning nozzles 31 in another nozzle line 400 adjacent thereto. The two sides intersect.

In other words, a plurality of spinning nozzles 31 are provided in one nozzle line 400, and these spinning nozzles 31 are inclined in the same direction at the same angle. Therefore, the nozzle center axes of the plurality of spinning nozzles 31 in one nozzle line 400 are included in one surface (first surface). The same applies to the other nozzle lines 400, and the nozzle center axes of the plurality of spinning nozzles 31 in the other nozzle lines 400 are included in the other surface (second surface).
By appropriately aligning the two sets of discharge unit main bodies, the first and second surfaces of the dry spinning apparatus 201 intersect each other.

  In FIG. 7, the first surface and the second surface intersect each other below the heat insulating layer 13 and above the housing 14 having the heating mechanism. However, since the first surface and the second surface are virtual surfaces, they are not specifically illustrated in FIG. A position S at which the nozzle center axis of each spinning nozzle 31 intersects in the discharge section main body is an intersection position between the first surface and the second surface.

  Thus, when the first surface and the second surface intersect, the yarn precursor 12 discharged from one nozzle line 400 and the yarn precursor discharged from another nozzle line 400 adjacent thereto. 12 is preferable because it easily contacts.

In particular, as shown in FIG. 7, it is preferable that the first surface and the second surface intersect on the upstream side of the region heated by the heating mechanism (infrared heater 15). When the yarn precursor 12 is positioned on the upstream side of the heating mechanism, the yarn precursor 12 is in a state containing a large amount of solvent and is easily cut. By bringing the yarn precursors 12 containing a large amount of the solvent before being heated by the heating mechanism into contact with each other, the yarn precursors 12 can be easily bonded or entangled. Therefore, it is possible to increase the apparent thickness by contacting the yarn precursor 12 on the upstream side of the heating mechanism, and it is possible to favorably prevent the yarn precursor 12 from being cut or diffused.
Here, the “region heated by the heating mechanism” refers to a region where the heating mechanism (infrared heater 15) is installed on the side of the yarn precursor 12 in the extending direction. Particularly in the present embodiment, the housing 14 divides the installation area where the infrared heater 15 is installed and the non-installation area, and at least the area upstream of the housing 14 is heated by the heating mechanism. It is upstream.

The dry spinning apparatus 201 described above is suitable for carrying out the spinning method of the present invention.
That is, in the spinning method of the present invention, a discharging process is performed in which the spinning solution is discharged from the plurality of spinning nozzles 31 to form the yarn precursor 12 in the nozzle portion. For example, the nozzle unit is configured to blow out a pressurized gas for stretching the yarn precursor 12 from the blower 10 and to provide two or more nozzle lines 400 in which a plurality of spinning nozzles 31 are arranged in one direction in parallel. is there.
And after performing the said discharge process, the yarn precursor 12 discharged from the one nozzle line 400 and the yarn precursor 12 discharged from the other nozzle line 400 adjacent to this are brought together so that contact is possible. Perform the process.
And after implementing the said close process, the heating process which heats and removes the solvent contained in the yarn precursor 12 with a heating mechanism (infrared heater 15) is implemented.
In addition, the solvent removed in the said heating removal process contains the solvent contained in the said spinning dope.

  According to the spinning method of the present invention, one yarn precursor 12 discharged from the spinning nozzle 31 is brought into contact with another yarn precursor 12 in a state of sufficiently containing a solvent. Thereby, the apparent thickness of the yarn precursor 12 can be increased, and problems such as yarn breakage and diffusion during spinning can be prevented. Therefore, it is possible to produce a desired yarn and to perform stable spinning for a long time.

In particular, in the shifting step, the first surface including the nozzle center axis of the plurality of spinning nozzles 31 in one nozzle line 400 and the nozzle center axis of the plurality of spinning nozzles 31 in another nozzle line 400 adjacent thereto. And a second surface including
The intersection between the first surface and the second surface is the same as that described with respect to the dry spinning apparatus 201, and therefore the description thereof is omitted here.

The spinning method of the present invention is not limited to being performed in the dry spinning apparatus 201, and widely includes spinning methods including the discharging step, the shifting step, and the heating step.
In the spinning method of the present invention, the yarn obtained after the heating step can be used as the final product of the spinning method of the present invention. Further, the yarn (yarn precursor) obtained after the heating step is further processed into an arbitrary length or shape such as monofilament or particle formation, or accumulated on an arbitrary article to obtain a yarn. It may further include an accumulation process for manufacturing the aggregate or a non-woven fabric manufacturing process.

  In addition, in matters to be described regarding the dry spinning apparatus and the nonwoven fabric manufacturing apparatus of the present invention, matters related to spinning are also applied to the spinning method of the present invention as appropriate.

[Third embodiment]
Next, a third embodiment of the present invention will be described with reference to FIGS. FIG. 10 is a schematic view illustrating a dry spinning apparatus 401 according to the third embodiment of the present invention. FIG. 10 also shows a nonwoven fabric manufacturing apparatus 421 configured by further including the collection drum 18 in the dry spinning apparatus 401. FIG. 11A is a perspective view of a nozzle substrate 406 used in the third embodiment of the dry spinning apparatus of the present invention. FIG. 11B is a side view of the nozzle substrate 406 shown in FIG. FIG. 12 is an explanatory view illustrating the wind direction of the air blown from the air blowing units (the first air blowing unit 430 and the second air blowing unit 440) provided in the third embodiment of the dry spinning apparatus of the present invention.

The dry spinning apparatus 401 according to the third embodiment has the same configuration as the dry spinning apparatus 1 according to the first embodiment except that the nozzle substrate 6 is changed to the nozzle substrate 406 and a blower is provided. Can do.
In the dry spinning apparatus 401, a spacer 7, a diaphragm plate 380, and a flow dividing substrate 390 can be optionally provided. As for these arbitrary configurations, FIG. 8 can be referred to as appropriate.

That is, in the dry spinning apparatus 401, two or more nozzle lines 402 (FIG. 11) in which a plurality of spinning nozzles 31 are arranged in one direction are provided in parallel. The dry spinning apparatus 401 includes a blower that blows air to the yarn precursor 12 from the side of the yarn precursor 12 that is discharged from each spinning nozzle 31 and stretches. The air blowing unit includes a first air blowing unit 430 and a second air blowing unit 440 that face each other with the yarn precursor 12 interposed therebetween.
The wind directions of the air blown from the first blower 430 and the second blower 440 are all directed in the downstream direction of the yarn precursor 12.
For example, by providing the first air blowing unit 430 and the second air blowing unit 440 at a position according to the parallel direction of the plurality of nozzle lines 402, the first air blowing unit 430 and the second air blowing unit 440 pass through the yarn precursor 12. Can be opposed.
Note that the radiation plate 16 shown in FIG. 10 is provided with an air flow path between adjacent radiation plates 16. Therefore, when the 1st ventilation part 430 and the 2nd ventilation part 440 are provided in the outer side of the infrared heater 15, the wind ventilated from these can reach the yarn precursor 12 through between the radiation plates 16. FIG.

  In the dry spinning apparatus 401, by providing the first blower 430 and the second blower 440, the yarn precursor 12 that extends from one nozzle line 402 and the yarn precursor 12 that extends from the other nozzle line 402 are provided. It is possible to confound them. In addition, since the wind from the air blowing section is directed downstream in the spinning direction of the yarn precursor 12, it is possible to promote the elongation of the yarn precursor 12 in the spinning direction.

The said ventilation part can be comprised by installing air blowers, such as a fan, in an appropriate position. The position where the blower is provided between the tip of the spinning nozzle 31 and the heating mechanism in the dry spinning apparatus 401 is not particularly limited. For example, as shown in FIG. 10, a blower unit can be provided in a region to be heated in the heating mechanism. That is, by providing the first blower 430 and the second blower 440 outside the infrared heater 15, the heated yarn precursor 12 can be cooled appropriately, which is desirable in the spinning process. In particular, when the yarn is spun using a polysaccharide such as pullulan as a main raw material according to this embodiment, it is preferable to cool the yarn precursor 12 by blowing air in a region heated by a heating mechanism. By the said ventilation, the quality change of the polysaccharide by heating can be prevented.
Further, by providing the air blowing section in the heating area in the heating mechanism, it is possible to exclude water molecules evaporated by the heating from the vicinity of the heating area. In particular, when a heating mechanism is provided in a partitioned space such as the housing 14, it is preferable to provide a blower in the space from the viewpoint of preventing the space from being saturated by the water molecules. .
In addition, the arrow shown in FIG. 10 has shown the wind direction of the wind blown from a ventilation part simulated.

In the dry spinning apparatus 401, the nozzle substrate 406 does not face the spinning nozzles 31 in the plurality of nozzle lines 402, and the nozzle center axis of each spinning nozzle 31 is oriented in a substantially normal direction with respect to the surface of the substrate body 30. (FIGS. 11A and 11B).
Therefore, the plurality of rows of yarn precursors 12 extending from the plurality of nozzle lines 402 first extend in the downstream direction in a substantially parallel positional relationship as shown in FIG. Of course, since the yarn precursor 12 may actually extend in the downstream direction while slightly swinging in a random direction, the above-mentioned substantially parallel positional relationship is substantially parallel and is a positive positional relationship. Means not.
The plurality of rows of yarn precursors 12 extending substantially in parallel are received while the first air blowing unit 430 and the second air blowing unit 440 are opposed to each other, receive wind from the side, and gather and entangle with each other. By interlacing the yarn precursors 12 extending from the plurality of nozzle lines 402 with each other, for example, it is possible to satisfactorily manufacture a nonwoven fabric with a small basis weight.

  In particular, the wind direction of the air blown from the first blower 430 and the second blower 440 is the downstream direction of the yarn precursor 12 and opposite to the direction in which the spinning nozzles 31 are arranged. Thereby, it is possible to sufficiently entangle the plural rows of yarn precursors 12 to produce a yarn assembly or a nonwoven fabric with a small basis weight.

  In order to reverse the directions of the winds blown from the first blower 430 and the second blower 440, for example, one wind is in the vertical direction of the dry spinning device 401 or the extension direction of the yarn precursor 12. To the right and the other wind to the left. More specifically, in FIG. 10, the air blown from the first blower unit 430 is blown downward in the paper plane and forward, and the wind blown from the second blower unit 440 is downward in the paper plane and the back direction. You just need to blow.

  In the dry spinning apparatus 401, the first blower 430 and the second blower 440 can include a wind direction adjusting mechanism for adjusting the wind direction of the wind blown from the blower.

As an example of a wind direction adjustment mechanism, the aspect which provides a flap in the 1st ventilation part 430 and the 2nd ventilation part 440 can be mentioned. One or more flaps can be provided in the blowing direction.
As the wind direction adjusting mechanism, a configuration other than the flap can be adopted. Although illustration is omitted, for example, the air blowing section itself is configured as an air blowing nozzle, and the air direction with respect to the yarn precursor 12 can be appropriately adjusted by adjusting the angle of the air blowing nozzle.

By providing a wind direction adjusting mechanism in the blowing section, the blowing direction with respect to the yarn precursor 12 can be adjusted appropriately. The wind direction adjusting mechanism may be of a type that can automatically or manually change the wind direction, or may be of a type that urges the wind direction in a certain direction determined by design.
Providing a flap as the wind direction adjusting mechanism is preferable because a desired wind direction can be realized with a simple structure. The said flap says the member which adjusts the flow of airflow. The flap may be movable. In this case, the flap includes a member capable of adjusting the flow of the airflow by changing the angle of the flap manually or automatically. The flap may be non-movable and includes a rectifying plate that rectifies the airflow in a predetermined fixed direction. For example, a flap used for wind direction adjustment in an air conditioner can be appropriately used. For example, the shape of the flap can be a flat plate state. However, the flap used in this embodiment is not limited to the above.

The flap provided in the 1st ventilation part 430 and the 2nd ventilation part 440 and the wind direction by this are demonstrated using FIG. In addition, the arrow shown in FIG. 12 has simulated the direction of the wind blown from a ventilation part. In FIG. 12, the illustration of the infrared heater 15 and the radiation plate 16 existing between the blower and the yarn precursor 12 is omitted.
FIG. 12A shows an aspect in which a plurality of flaps are provided inside the first air blowing part 430 and the second air blowing part 440 facing each other with the yarn precursor 12 and aligned along the extending direction of the yarn precursor 12. . As an example of the wind direction adjusting mechanism, a plurality of flaps 431 aligned along the extending direction of the yarn precursor 12 can be provided between the first blower 430 and the yarn precursor 12. Similarly, a plurality of flaps 441 aligned along the extension direction of the yarn precursor 12 can be provided between the second blower 440 and the yarn precursor 12.
Each of the flap 431 and the flap 441 is inclined in the downstream direction, and adjusts the wind direction of the wind blown from the first blower 430 and the second blower 440 provided on the back side in the downstream direction. The inclination angles of the flap 431 and the flap 441 may be the same or different. Although not shown, the flap 431 and the flap 441 may be further inclined in the left-right direction with respect to the yarn precursor 12.

FIG. 12B shows an example in which a flap is further provided on the inner side in addition to the flap 431 and the flap 441. A plurality of flaps 435 can be provided along the row of flaps 431 between the flaps 431 and the yarn precursor 12. Similarly, a plurality of flaps 445 can be provided between the flap 441 and the yarn precursor 12 along the example of the flap 441. The flap 431 and the flap 435, and the flap 441 and the flap 445 are provided in the blowing direction from the first blower 430 and the second blower 440, respectively. Thereby, the wind direction of the wind from the 1st ventilation part 430 can be adjusted with the flap 431 and the flap 435, and the wind direction of the wind from the 2nd ventilation part 440 can be adjusted with the flap 441 and the flap 445. .
For example, the inclination angle of the flap 431 and the flap 441 has a downward component for guiding the wind in the downstream direction. In addition, the inclination angle of the flap 435 and the flap 445 that are continuous with these in the blowing direction is opposite to the direction in which the spinning nozzles 31 are arranged and has a left-right direction component. Thus, by giving different direction components to the flaps that are continuous in the blowing direction, it is easy to guide the wind blown from the blowing unit in a desired direction.

In addition, the air blower shown in the third embodiment is appropriately applied to other embodiments of the present invention regardless of the number of spinning nozzles 31 or the number of nozzle lines. For example, in the dry spinning apparatus 1 in which the nozzle line shown as the first embodiment or the fourth embodiment is one row, the above-described air blowing section can be provided.
The dry spinning apparatus of the present invention or the spinning method of the present invention can use a slurry spinning stock solution obtained by dissolving or suspending a spinning material in a solvent. A yarn precursor formed by the dry spinning apparatus or spinning method of the present invention using such a spinning dope has a high water content. The yarn precursor is heated by a heating mechanism and the solvent is removed, so that the yarn cross-sectional diameter is reduced to about one-tenth to one-tenth. In some cases, the scattering may occur in a direction different from the spinning direction. A part of the scattered yarn precursor adheres to a heating device or the like included in the heating mechanism, and may adversely affect the manufacturing process. Therefore, the undesirable effect can be reduced by providing the air blowing section and promoting the yarn precursor to flow in the spinning direction (downstream direction).
In particular, it is desirable to blow air toward the yarn from the heating device side in the heating mechanism in order to favorably prevent the scattered yarn precursor from adhering to the heating device.

Each embodiment of the present invention described above does not limit the present invention and includes various modifications and improvements as long as the object of the present invention is achieved.
In addition, the various components of the dry spinning apparatus of the present invention do not have to be independent of each other, a plurality of components are formed as one member, and one component is a plurality of members. It is allowed to be formed, a certain component is a part of another component, a part of a certain component overlaps a part of another component, and the like.

  Each structure shown in the first to third embodiments described above can be appropriately applied to each other.

  For example, the first blower and the second blower shown in the third embodiment can be provided in the dry spinning apparatus 201 described in the second embodiment. In the second embodiment, the yarn precursors ejected from the parallel nozzle lines are brought into contact with each other, and the yarn precursors ejected from the nozzle lines by the first air blowing unit and the second air blowing unit are entangled with each other. it can.

  In addition, as described in the second embodiment, “a plurality of spinning nozzles are arranged so that the tip of any one spinning nozzle and the tip of another spinning nozzle face each other” or various related thereto The aspect can be appropriately incorporated into the first embodiment.

  In addition, the dry spinning apparatus in any of the embodiments includes the case where the final product is a nonwoven fabric. In particular, as an example of an embodiment in which the nonwoven fabric can be preferably manufactured using the dry spinning apparatus of the present invention, spinning is performed. A movable collection surface for collecting the warp yarn can be provided. Examples of the movable collection surface include a drum roll 58 or a rotary table 59 shown in FIG. The said movable collection surface can be provided in the 2nd embodiment or the 3rd embodiment of this invention, and can also be provided as a nonwoven fabric manufacturing apparatus.

The dry spinning apparatus, nonwoven fabric manufacturing apparatus, and spinning method of the present invention include an aspect in which one or a plurality of independent yarn shapes are manufactured, and an aspect in which an aggregate of independent yarn shapes is manufactured. In other words, the yarn manufactured according to the present invention is not limited to one or a plurality of yarn-shaped bodies, but includes an aggregate formed by collecting thread-shaped bodies. The assembly includes, for example, yarn entanglement. Further, the aggregate may be one in which intersecting yarns are partially fused. The aggregate includes a so-called non-woven fabric or a collection of thread-shaped bodies that are not even non-woven fabrics, and a collection of thread-shaped bodies accumulated on the surface of an arbitrary article. Therefore, the present invention is not limited to the case where the final product is an independent yarn shape. For example, even when the final product manufactured in an arbitrary apparatus including the dry spinning apparatus of the present invention is a nonwoven fabric, the arbitrary apparatus is included in the dry spinning apparatus of the present invention.
That is, the dry spinning apparatus of the present invention includes an embodiment for producing a nonwoven fabric. In particular, the nonwoven fabric manufacturing apparatus of the present invention described in detail above shows one preferred embodiment for manufacturing a nonwoven fabric in the dry spinning apparatus of the present invention. Similarly, the spinning method of the present invention can include a step of forming a yarn assembly or a nonwoven fabric. This step can be performed, for example, after the heating step in the spinning method of the present invention.
In addition, the present invention may have a function or a process for processing spun yarn (including a thread-shaped body, a nonwoven fabric, and an aggregate of thread-shaped bodies) into different forms. Examples of the different forms include, but are not limited to, a form in which a yarn as an intermediate is cut into a single fiber or powdered. The term “single fiber” is not intended to limit the processing from a spun yarn-shaped body to a long fiber generally understood as a fiber and a single fiber in the concept of a single fiber. Said monofilament broadly includes processing into short units compared to the continuous form understood as yarn.

[Fourth embodiment]
Next, a fourth embodiment of the present invention will be described with reference to FIGS. FIG. 13 is a schematic diagram for explaining an example of the dry spinning apparatus 500 according to the fourth embodiment of the present invention.
The dry spinning apparatus 500 is configured in the same manner as the dry spinning apparatus 1 of the present invention described above except that it has a movable collection surface 501 and a substrate feeding portion 510. Therefore, the dry spinning apparatus 500 will be described mainly with respect to the configuration different from the dry spinning apparatus 1, and the description of the configuration common to the dry spinning apparatus 1 will be omitted as appropriate.

The dry spinning apparatus 500 includes a blower 10 that blows out a pressurized gas for stretching the yarn precursor 12, a spinning nozzle 31 that discharges the spinning solution to form the yarn precursor 12, and a solvent contained in the yarn precursor 12. A heating mechanism (infrared heater 15). The dry spinning device 500 also has a movable collecting surface that collects the yarn 17 extending in the downstream direction on the surface when the flow direction in which the yarn precursor 12 discharged from the spinning nozzle 31 extends is the downstream direction. 501 and a substrate feeding portion 510 for feeding the substrate 70 to the movable collection surface 501.
The movable collection surface 501 continuously moves the collection start point where the yarn 17 reaches the movable collection surface 501 and the collection is started, and further moves the collected yarn 17 in the downstream direction. Operates in the direction of delivery.
The substrate feeding section 510 feeds the substrate 70 to the movable collection surface 501 on the near side from the collection start point, thereby laminating the yarn 17 on the substrate 70.
In the dry spinning apparatus 500 according to this embodiment, an example of collecting the yarn 17 formed from the yarn precursor 12 on the movable collecting surface 501 is shown. The mode which collects the yarn precursor 12 with the movable collection surface 501 is included. Since the solvent is still contained in the yarn precursor 12, drying or heating is performed after lamination on the substrate 70, and the yarn 17 is formed from the yarn precursor 12 in the lamination on the substrate 70. Also good.

  In the dry spinning apparatus 500, the collection start point is a point on the movable collection surface 501 where the yarn 17 discharged from the spinning nozzle 31 comes into contact with the surface of the substrate 70 to start lamination. is there. As the movable collection surface 501 itself continuously moves, the substrate 70 sent out onto the movable collection surface 501 also moves continuously. Specifically, the substrate 70 itself can be moved so that the point where the yarn 17 discharged from the spinning nozzle 31 contacts the surface of the substrate 70 sequentially moves downstream. By such movement operation, it is possible to avoid the yarn 17 from being concentrated and laminated at a certain position of the substrate 70.

According to this embodiment, the yarn 17 laminated on the substrate 70 can be obtained.
In other words, a laminated body composed of the substrate 70 and the yarn 17 can be easily manufactured by spinning using the dry spinning apparatus 500.
Moreover, the movable collection surface 501 operates to continuously move the collection start point where the yarn 17 reaches the movable collection surface 501 and the collection is started. Thereby, it is possible to avoid the yarn 17 from being stacked at the collection start point to form a fiber assembly or fiber entanglement. In addition, since the movable collection surface 501 operates in a direction in which the collected yarn 17 is further sent out in the downstream direction, the yarn 17 can be extended in the downstream direction in the substrate 70.
That is, according to the dry spinning apparatus 500, it is possible to avoid the yarns 17 being stacked in a tightly entangled state on the substrate 70. In particular, according to the dry spinning apparatus 500, it is possible to avoid an aspect in which the yarns 17 are stacked so as to fill a predetermined region of the substrate 70.

As shown in FIG. 13, in the dry spinning apparatus 500 according to this embodiment, the movable collection surface 501 is an outer surface of a pair of rotary collection drums 505 that rotate inward from each other.
The collection start point is located on the near side from the shortest distance between the pair of rotary collection drums 505. The substrate feeding unit 510 feeds the substrate 70 on the outer surface of at least one of the pair of rotary collection drums 505 and toward the front side from the collection start point.

As shown in FIG. 13, in the dry spinning apparatus 500, the yarn precursor 12 is discharged downward from the spinning nozzle 31. The yarn precursor 12 passes through the side of the infrared heater 15 to remove the internal solvent, and becomes a yarn 17.
The pair of rotary collection drums 505 are provided on the downstream side of the infrared heater 15.
The yarn precursor 12 discharged from the plurality of spinning nozzles 31 or the yarn 17 formed from the yarn precursor 12 starts to be collected above the region where the pair of rotary collection drums 505 are closest to each other. Is done. The upper direction corresponds to the front side from the collection start point (that is, the upstream side in the rotational direction of the rotary collection drum 505).

In the dry spinning apparatus 500 according to this embodiment, the substrate feeding unit 510 feeds the substrate 70 onto the movable collection surface 501 to each of the pair of rotary collection drums 505 on the near side from the collection start point. It is out.
In the region where the distance between the pair of rotary collecting drums 505 is the shortest, the two substrates 70 facing each other through the yarn 17 are pressed from the outer surface. That is, the dry spinning apparatus 500 can feed the substrate 70 on which the yarn 17 is laminated, passing between the pair of rotary collection drums 505, while pressing from the outer surface in the downstream direction.

  The yarn 17 that has passed between the pair of rotary collection drums 505 together with the substrate 70 constitutes a laminate 80 together with the substrate 70. The laminated body 80 is appropriately collected by a take-up roller 520 or the like. The laminated body 80 may be cut into a desired size to form a sheet-like laminated body 80.

  According to the dry spinning apparatus 500 having such a configuration, the spun yarn 17 can be obtained while being sandwiched between the two substrates 70. In the laminated body 80 in which the yarn 17 is sandwiched between the substrates 70, the substrate 70 faces the yarn 17 as a spacer. Therefore, the distance between the two substrates 70 is equal to the size of the fiber diameter of the yarn 17 or the size in the overlapping direction at the intersection where the yarn 17 overlaps.

Although FIG. 13 shows an example in which two substrate feeding portions 510 are provided in order to feed two substrates 70 facing each other via the thread 17, this embodiment is not limited to this. For example, by omitting the substrate feeding portion 510 on one side, feeding one substrate 70 from the substrate feeding portion 510 on the other side, and laminating the yarn 17 on one surface of the substrate 70, A laminated body 80 including the yarn 17 laminated thereon can also be formed.
In this way, after obtaining one substrate 70 having the thread 17 laminated on one surface, the one substrate 70 and any other substrate are bonded to each other through the thread 17. Thus, the stacked body 80 can also be formed.

  For example, in the dry spinning apparatus 500, the movable speed when the movable collection surface 501 continuously changes the collection start point is 0.3 times the discharge speed of the yarn precursor 12 discharged from the spinning nozzle 31. It is good to be above.

  Thereby, it is possible to collect the yarn precursor 12 discharged from the plurality of spinning nozzles 31 or the yarn 17 formed therefrom without being entangled in a dense state on the movable collection surface 501.

  From another viewpoint, the movable speed when the movable collection surface 501 continuously changes the collection start point may be equal to or higher than the discharge speed of the yarn precursor 12 discharged from the spinning nozzle 31. .

  As a result, the yarn precursor 12 continuous from the spinning nozzle 31 to the movable collection surface 501 and the yarn 17 formed thereby are obtained by the yarn precursor 12 or the yarn 17 collected on the movable collection surface 501. Pulling in the downstream direction gives tension. As a result, the bending of the yarn precursor 12 or the yarn 17 substantially disappears when being collected on the movable collecting surface 501, and the yarn precursor 12 or the yarn 17 is easily collected as a single fiber.

  Next, as another example of the fourth embodiment, a dry spinning apparatus 700 is shown in FIG. FIG. 16 is a partial perspective view illustrating a dry spinning apparatus 700 according to the fourth embodiment of the present invention. The dry spinning apparatus 700 has the same configuration as that of the upstream side including the heating mechanism (infrared heater 15) in the dry spinning apparatus 500. For this reason, the illustration of the upstream side of the heating mechanism (infrared heater 15) is omitted and the description thereof is omitted.

The dry spinning apparatus 700 includes a movable collection surface 530 that collects the yarn 17 extending in the downstream direction on the surface, and a substrate feeding unit 600 that feeds the substrate 70A to the movable collection surface 530. Substrate feeding portion 600 is provided with a slit 610 that feeds substrate 70A at the lower end.
The movable collection surface 530 is a conveyance surface of the belt conveyor 535 that continuously operates in one direction. The movable collection surface 530 continuously moves the collection start point where the yarn 17 reaches the movable collection surface 530 and the collection is started, and the collected yarn 17 is further moved in the downstream direction. Operates in the direction of delivery. The substrate feeding section 600 feeds the substrate 70A to the movable collection surface 530 on the front side from the collection start point (that is, the upstream side in the moving direction of the belt conveyor 535), whereby the yarn 17 is placed on the substrate 70A. Laminate.
The substrate feeding unit 600 can install, for example, a roll-shaped substrate 70A formed in advance in a roll installation unit (not shown) and mechanically feed the substrate 70A from the roll in a desired direction. Alternatively, the substrate feeding unit 600 may be directly connected to the production line for the substrate 70A. Specifically, when the substrate 70 </ b> A is an organic resin film, an organic resin film manufacturing unit (not shown) may be provided upstream of the substrate delivery unit 600. In the organic resin film manufacturing section, the film may be manufactured by a film manufacturing method such as a melt extrusion method, a melt casting method, or a solution pouring method. At this time, a die or lip which is an organic resin film (or organic resin film material) discharge port in the organic resin film manufacturing section may also be used as the slit 610. The organic resin film (or organic resin film material) discharged from the slit 610 that is also used as a die or a lip may be received on the belt conveyor 535 surface.

  The dry spinning apparatus 700 having the above configuration can obtain the yarn 17 to be laminated on one surface of the substrate 70A.

The dry spinning apparatus 700 may further include a winding unit 550 that winds up the substrate 70A on which the yarn 17 is laminated, and may include an opposing conveyance surface 540 that is movable along the winding direction. The opposing conveyance surface 540 is a conveyance surface of the belt conveyor 536 that can convey the substrate 70B in one direction. The belt conveyor 536 is moved by the lower transfer device 537.
The belt conveyor 535 is opposed to the belt conveyor 536 that is moved in the same direction as the changed conveyance direction while the conveyance direction is changed in the winding unit 550.
The substrate 70 </ b> A on which the yarn 17 is stacked is wound by the winding unit 550 to change the moving direction, and faces the substrate 70 </ b> B conveyed to the belt conveyor 536. By adjusting the distance between the movable collection surface 530 and the opposing conveyance surface 540, the substrate 70B can be laminated on the substrate 70A via the yarn 17 to form the laminate 80.

Next, the detail of the laminated body 80 is demonstrated.
The substrate 70 may be a base material having an appropriate strength for constituting the laminate 80 together with the yarn 17, and a thin film base material such as a film shape, a sheet shape, or a film shape can be used as the substrate 70.
As the substrate 70, for example, an organic resin film can be used. The organic resin film is preferable because it can exhibit sufficient strength to be used in the dry spinning apparatus 500. Examples of the organic resin film include, but are not limited to, a polypropylene film, a polyethylene film, a polystyrene film, and a nylon film. In addition, the said film includes other film-like base materials, such as a sheet | seat and a film | membrane.
In addition, a conductive metal foil can be used as the substrate 70. For example, a metal foil that can be used as a conductive member typified by copper foil or aluminum foil can be used as the substrate 70.
Although the thickness of the board | substrate 70 is not specifically limited, For example, it is 5 micrometers or more and 50 micrometers or less, Preferably it is 10 micrometers or more and 40 micrometers or less, More preferably, it can be set as the range of 15 micrometers or more and 30 micrometers or less. It is preferable that the thickness of the laminated body 80 is reduced by reducing the film thickness of the substrate 70 within a range in which the laminated body 80 can be configured.

The yarn 17 sandwiched between the two substrates 70 is not particularly limited as long as it can be spun in the dry spinning apparatus of the present invention.
For example, since a water-soluble polysaccharide such as pullulan can be dissolved in an aqueous solvent, the spinning stock solution can be adjusted to an appropriate concentration, and the yarn precursor 12 containing water can be discharged from the spinning nozzle 31. Since the yarn precursor 12 containing moisture is drawn in the downstream direction while having an appropriate fiber diameter, the fiber is cut or dispersed in the air while being suppressed or prevented. Then, by removing the aqueous solvent by the heating mechanism, it is possible to easily form the yarn 17 having a smaller fiber diameter than the yarn precursor 12 after ejection. That is, the water-soluble polysaccharide is used in the present embodiment in that the difference in fiber diameter between the yarn precursor 12 and the yarn 17 can be increased as compared with the melt-blowing method suitable for forming organic resin fibers. It is advantageous to use and spin. That is, in this embodiment, the fiber diameter of the yarn 17 can be made smaller than the fiber diameter of the yarn precursor 12 before passing through the heating mechanism (infrared heater 15).
Among the water-soluble polysaccharides, by selecting pullulan, erodibility is added to the yarn 17 and the application range of the laminate 80 can be expanded.

More specifically, in the case of a water-soluble polysaccharide fiber such as a pullulan fiber formed using a spinning stock solution obtained by dissolving a water-soluble polysaccharide such as pullulan in an aqueous solvent, the laminate 80 has the following superiority. Have a point.
That is, when the spinning solution containing the water-soluble polysaccharide is adjusted to a slurry state and used in the spinning device of the present invention, it is appropriately adjusted and is 5 μm or more and 50 μm or less, particularly 5 μm or more and 30 μm or less, particularly 5 μm or more. A yarn precursor 12 having a small diameter of 15 μm or less can be formed. The thin yarn precursor 12 can remove the aqueous solvent contained by being heated by a heating mechanism such as an infrared heater 15.
For example, it is possible to adjust a spinning stock solution in a slurry state at a concentration such that the pullulan fiber is 10% by mass to 30% by mass with respect to 100% by mass of the spinning stock solution. In this case, the aqueous solvent is removed by the heating mechanism, and the fiber diameter of the yarn 17 such as pullulan fiber can be contracted to about 1/3 to about 1/10 of the fiber diameter of the yarn precursor 12. is there.
In the dry spinning apparatus of the present invention, although it depends on the pore diameter of the spinning nozzle 31, a yarn 17 having a fiber diameter of 0.5 μm or more and 5 μm or less can be obtained if it is a water-soluble polysaccharide fiber such as pullulan fiber.
By sandwiching such a thin yarn 17 between the substrates 70 in a substantially single fiber state, the distance between the substrates 70 can be set to 0.5 μm or more and 5 μm or less. Here, the substantially single fiber means that the yarn precursor 12 discharged from the plurality of spinning nozzles 31 or the yarn 17 formed from the yarn precursor 12 is laminated on the substrate 70 without being closely entangled. State. More preferably, the plurality of yarns 17 are roughly stacked on the substrate 70 to the extent that they are confirmed as rows corresponding to the plurality of spinning nozzles 31.

[Fifth embodiment]
Below, the 5th embodiment which is an embodiment of the laminated body of this invention is demonstrated. 14A is a perspective view of a three-layer structure 81 according to the fifth embodiment of the present invention, and FIG. 14B is a perspective view of a five-layer structure 82 according to the fifth embodiment of the present invention. is there. FIG. 15 is an exploded perspective view of the laminate 81 shown in FIG. 14A.

  As illustrated in FIG. 14A, the stacked body 81 includes a first substrate 70 and a second substrate 70 that faces the first substrate 70. The laminated body 81 includes an intermediate layer 72 that includes a thread 17 that is a pullulan fiber and a non-aqueous solvent 99 between the first substrate 70 and the second substrate 70.

  The first substrate 70, the second substrate 70, and the yarn 17 that is a pullulan fiber in the laminate 81 are the same as the substrate 70 and the yarn 17 in the laminate 80 described above and particularly the pullulan fiber. I will omit the explanation.

The non-aqueous solvent 99 is selected as a solvent that does not dissolve water-soluble pullulan. For example, an organic solvent, oil, or the like can be used as the non-aqueous solvent 99.
In the intermediate layer 72, the thread 17 serves as a spacer that secures a space between the two substrates between the first substrate 70 and the second substrate 70. A non-aqueous solvent 99 is filled around the thread 17 serving as a spacer, thereby forming an intermediate layer 72.

The laminate 81 can be used for various applications by combining the non-aqueous solvent 99 with the first substrate 70 and the second substrate 70.
For example, the first substrate 70 and the second substrate 70 are made of an insulating member such as an organic resin film, and by using a liquid crystal solvent as the non-aqueous solvent 99, the laminate 81 can be used as a liquid crystal cell. About an organic resin film, since the thing similar to the organic resin film demonstrated in 4th embodiment can be used, detailed description is omitted.
Pullulan fiber has a high light transmittance, and in particular, the fiber diameter is 3 μm or less, more preferably 1.5 μm or less, and particularly preferably 1 μm or less. Can be high.
The fiber diameter of the pullulan fiber is indicated by measuring the fiber width at an arbitrary position of 5 to 10 pullulan fibers arbitrarily selected by microscopic observation and obtaining an average value thereof. The fiber diameter of the yarn 17 other than the pullulan fiber can be measured by the same method.

Alternatively, the non-aqueous solvent 99 can be an insulating oil and the intermediate layer 72 can be configured as an insulating layer. At this time, the laminated body 81 can be configured as a capacitor by configuring the first substrate 70 and the second substrate 70 as conductive layers including a conductive member.
The insulating oil is a liquid insulating material, and when filled between the first substrate 70 and the second substrate 70, the first substrate 70 and the second substrate 70, which are conductive layers, are electrically connected. It is a material that can be insulated. More specifically, for example, an electrical insulating oil standardized as JIS C 2320 in Japanese Industrial Standard can be used as the insulating oil.

The first substrate 70 and the second substrate 70 are conductive layers including a conductive member, and can be formed by containing conductive particles made of carbon, copper, silver, or the like in an insulating material. It can comprise from a member. Or the 1st board | substrate 70 and the 2nd board | substrate 70 are the conductive layers containing an electroconductive member, Comprising: It can be comprised with the member which consists only of insulating members, such as metal foil which shows electroconductivity. Moreover, the film which consists of conductive resin can also be used for the 1st board | substrate 70 and the 2nd board | substrate 70 as a conductive layer.
Since the same metal foil as that described in the fourth embodiment can be used as the metal foil, detailed description thereof is omitted.

  As described above, the pullulan fiber can be formed as a thin fiber, and the distance between the first substrate 70 and the second substrate 70 can be reduced. Therefore, the laminated body 81 according to the present embodiment can provide a capacitor that is thinned and has a large capacitance.

In particular, in the laminate 81 according to this embodiment, it is preferable that the yarn 17 that is the pullulan fiber forms a single fiber row between the first substrate 70 and the second substrate 70.
FIG. 15 is an exploded perspective view of the laminated body 81 in a state where the second substrate 70 is separated from the first substrate 70 and the yarn 17. In FIG. 15, the non-aqueous solvent 99 is not shown.
As shown in FIG. 15, the yarn 17 laminated on the first substrate 70 is a single fiber, so that the distance between the first substrate 70 and the second substrate 70 is a pullulan fiber. The fiber diameter can be the same as the fiber diameter. Here, the yarns 17 form a single fiber array as shown in FIG. 15 in which the plurality of yarns 17 extend substantially in the same direction while depending on the left and right without crossing each other, and It includes a state of having portions intersecting each other and extending in substantially the same direction. In the present embodiment, the fact that the yarns 17 form a single fiber row excludes a state in which a plurality of yarns 17 are entangled to the extent that the extension direction of each yarn 17 cannot be confirmed.

As a modification of this embodiment, FIG. 14B shows a perspective view of a laminate 82 having a five-layer structure. In the laminated body 82, the first substrate 70 and the second substrate 70 face each other through an intermediate layer 72 having the yarn 17 that is a pullulan fiber and the non-aqueous solvent 99, and a third substrate is disposed on the outside thereof. 85 and a fourth substrate 85.
In addition, the 1st board | substrate 70 and the 2nd board | substrate 70 can also be comprised with the substantially same member, and can also be comprised with a different member. Similarly, the third substrate 85 and the fourth substrate 85 can be composed of substantially the same member, or can be composed of different members.

  For example, the laminated body 81 can be constituted by the first substrate 70 and the second substrate 70 which are insulating films, and the third substrate 85 and the fourth substrate 85 made of a conductive material can be further provided outside thereof. Accordingly, the first substrate 70, the second substrate 70, and the intermediate layer 72 constitute an insulating layer, and a capacitor having conductive layers on both sides thereof can be constituted.

Although the manufacturing method of the laminated body 81 mentioned above is not specifically limited, For example, the laminated body 81 can be manufactured using the laminated body 80 manufactured by the dry spinning apparatus shown by the 4th embodiment of this invention.
That is, using the dry spinning apparatus 500 or the dry spinning apparatus 700, the laminate 80 including the yarn 17 that is a pullulan fiber is formed. As described above, the distance between the substrate 70 and the substrate 70 can be reduced by forming the pullulan fiber with a small diameter. More specifically, the distance can be set in a range of 1 μm to 10 μm, for example. Thus, by reducing the distance between the two substrates 70, it is possible to cause capillary action in the space formed between the substrates 70.
Specifically, by immersing an arbitrary edge of the laminate 80 in the non-aqueous solvent 99, the non-aqueous solvent 99 can be infiltrated between the substrates 70 by capillary action. Thus, a laminate including an intermediate layer 72 having the non-aqueous solvent 99 and the yarn 17 that is a pullulan fiber between the substrate 70 and the substrate 70 (that is, between the first substrate 70 and the second substrate 70). The body 81 can be manufactured.
Moreover, after manufacturing the laminated body 82, the laminated body 82 can be manufactured by further laminating the third substrate 85 and the fourth substrate 85 on both outer surfaces.
Alternatively, a laminated substrate in which the first substrate 70 and the third substrate 85 are laminated in advance and a laminated substrate in which the second substrate 70 and the fourth substrate 85 are laminated are prepared, and this is prepared as the dry spinning apparatus 500 or the dry spinning apparatus. It can also be used as a substrate used in 700. In this case, a laminate having the first substrate 70 and the third substrate 85 on one side and the second substrate 70 and the fourth substrate 85 on the other side is manufactured via the thread 17, By immersing the edge of the laminated body in the non-aqueous solvent 99, the laminated body 82 having a five-layer structure can be manufactured.

The above embodiment includes the following technical idea.
(C1) a blower that blows out pressurized gas for drawing the yarn precursor;
A spinning nozzle that discharges the spinning stock solution to form the yarn precursor, a flow dividing substrate in which a plurality of air nozzles are formed in a plane, and an air supply path that guides the pressurized gas blown from the blower to the air nozzle are provided. The discharge unit main body,
A heating mechanism for heating and removing the solvent contained in the yarn precursor,
The spinning nozzle has a nozzle body, and a stock solution circulation hole that is formed inside the nozzle body and circulates the spinning solution.
One or a plurality of spinning nozzles are respectively arranged corresponding to a plurality of the air nozzles,
The dry spinning apparatus according to claim 1, wherein a tip of the nozzle body does not protrude from the air nozzle.
(C2) The dry spinning apparatus according to (C1), wherein the air supply path includes a reduced diameter portion along a side surface of the spinning nozzle and having an opening width that decreases toward a tip position of the air nozzle.
(C3) The dry spinning apparatus according to (C1) or (C2), wherein the air supply path includes a barrier portion provided to stand in a direction intersecting the flow path of the pressurized gas.
(C4) The barrier portion is a plurality of baffle plates that change the flow direction of the pressurized gas,
The plurality of baffle plates include adjacent first baffle plates and second baffle plates,
The first baffle plate extends from the first inner wall surface of the air supply path toward the second inner wall surface of the air supply path facing the first inner wall surface,
The second baffle plate is downstream from the first baffle plate and extends from the second inner wall surface toward the first inner wall surface,
The first pressure area of the pressurized gas that passes between the second baffle plate and the first inner wall surface is larger than the first flow passage area of the pressurized gas that passes between the first baffle plate and the second inner wall surface. The dry spinning apparatus according to (C3), wherein the two flow path areas are smaller.
(C5) The dry spinning apparatus according to any one of (C1) to (C4), wherein the air supply path includes a storage section in which a volume per unit distance in the flow path direction of the pressurized gas increases.
(C6) The discharge unit body includes a nozzle substrate,
The nozzle substrate includes a substrate body and a plurality of the spinning nozzles provided on one surface of the substrate body,
The one surface of the substrate body and the flow dividing substrate face each other,
The dry spinning apparatus according to (C5), wherein the storage section is provided between the nozzle substrate and the flow dividing substrate.
(C7) The storage portion is provided in an end region on the opposite side of the air passage from the blower,
The tip of the nozzle body does not protrude from the air nozzle, and at least a part of the peripheral side surface of the nozzle body is exposed to the inside of the reservoir, and the pressurized gas introduced into the reservoir is the nozzle body The dry spinning apparatus according to (C5) or (C6), wherein the yarn precursor is rectified on the side surface and branched by the air nozzle to stretch the yarn precursor.
(C8) a blower unit that blows air to the yarn precursor from the side of the yarn precursor to be stretched, and has a first blower unit and a second blower unit that face each other through the yarn precursor;
The dry spinning according to any one of (C1) to (C7), wherein the wind direction of the wind blown from the first blower and the second blower is directed to the downstream direction of the yarn precursor. apparatus.
(C9) The wind direction of the wind blown from the first blower and the second blower is a downstream direction of the yarn precursor and is opposite to each other with respect to the arrangement direction of the spinning nozzles ( The dry spinning apparatus according to C9).
(C10) The dry spinning device according to (C8) or (C9), wherein the first blower and the second blower have a wind direction adjusting mechanism for adjusting a wind direction of the wind blown from the blower. .
(C11) The wind direction adjusting mechanism is a flap provided in the first air blowing part and the second air blowing part,
The said flap is a dry-type spinning apparatus as described in any one of said (C8) to (C10) provided with the 1 or 2 or more in the ventilation direction.
(C12) The dry spinning apparatus according to any one of (C1) to (C11), wherein two or more spinning nozzles are detachably attached to the substrate body.
(C13) Any one of the above (C1) to (C12) is provided with a reduced diameter portion whose opening width decreases from the nozzle substrate side toward the tip side of the air nozzle on the blower side of the flow dividing substrate. The dry spinning apparatus according to claim 1.
(C14) the heating mechanism includes an infrared heater installed along the extension direction of the yarn precursor that has been discharged and stretched from the spinning nozzle;
From the above (C1) to (C13), the infrared heater heats and removes the solvent contained in the yarn precursor by irradiating the yarn precursor with infrared rays directly and / or by radiation. ). The dry spinning apparatus according to any one of the above.
(C15) The dry spinning as described in (C14) above, wherein a heat insulating layer for reducing heat conduction from the infrared heater to the spinning nozzle is provided between the flow dividing substrate and the infrared heater. apparatus.
(C16) As the heat insulating layer, provided with a heat insulating plate fixed between the flow dividing substrate and the infrared heater,
(C15), wherein an air layer capable of arousing outside air is provided between the flow-dividing substrate and the heat insulating plate and / or between the heat insulating plate and the infrared heater. Dry spinning equipment.
(C17) The yarn precursor adhesion-preventing layer is provided on the side of the installation surface of the dry spinning apparatus from the tip of the spinning nozzle and facing the installation surface. The dry spinning apparatus according to any one of (C1) to (C16).
(C18) having a head for storing the air supply path that guides the pressurized gas blown from the blower to the air nozzle, and the liquid supply path that guides the spinning stock solution to the spinning nozzle;
The substrate body has two or more alignment pin holes, and the bottom plate of the head has alignment pin retaining holes corresponding to the alignment pin holes, The nozzle substrate can be aligned at a predetermined position with respect to the head by inserting a pin into the alignment pin hole and the alignment pin retaining hole,
The board body and the flow dividing board are provided with a plurality of bolt insertion holes communicating with each other in a stacked state, and the diameter of the bolt insertion hole provided in the flow dividing board is provided in the board body. Smaller than the hole diameter of the bolt insertion hole,
The bottom plate of the head is provided with a threaded bolt retaining hole corresponding to each of the bolt insertion holes, and by inserting a bolt into the bolt insertion hole and the bolt retaining hole, the pin is The dry spinning apparatus according to (C4), wherein the nozzle substrate inserted and the flow dividing substrate into which the bolt is inserted can be aligned with the head.
(C19) The stock solution circulation hole has a hole diameter on the spinning stock solution inflow side of the spinning nozzle larger than a hole size on the spinning stock solution discharge side, and extends from the spinning stock solution inflow side, and extends from the spinning stock solution discharge side. The dry spinning apparatus according to any one of (C1) to (C18), wherein the straight cylindrical hole is continuous through a step.
(C20) The dry spinning apparatus according to any one of (C1) to (C19), wherein the aspect ratio of the stock solution circulation hole is a ratio included in a range of 1:10 to 1: 100.
(C21) A spinning stock solution inlet through which the spinning stock solution flows and a spinning stock solution outlet for supplying the spinning stock solution to the spinning nozzle are provided between the spinning stock solution hopper and the spinning nozzle, and are supplied from the hopper. A stock solution chamber for storing the stock solution to be spun and then diverting to a plurality of the spinning nozzles;
In the undiluted solution chamber, a diversion assisting member is installed,
The diversion auxiliary member is thickest in the vicinity of the spinning dope inlet, and becomes thinner as the distance from the spinning dope inlet increases.
Any of (C1) to (C20) above, wherein the clearance between the diversion assisting member and the stock solution chamber is small in the vicinity of the spinning stock solution inlet, and increases as the distance from the spinning solution inlet increases. The dry spinning apparatus according to claim 1.
(C22) a pair of electrodes opposed via the yarn precursor;
A current device for passing a current through the electrode,
The dry spinning apparatus according to any one of (C1) to (C21), wherein an electric field is generated between the electrodes when a current is passed through the electrodes by the current device, and the yarn precursor can be charged. .
(C23) The electrode is provided on each of an upstream side and a downstream side of an intermediate position in a flow direction of the yarn precursor in a heating region in which the yarn precursor passes through the heating mechanism. C22).
(C24) The dry spinning apparatus according to any one of (C1) to (C23), wherein two or more nozzle lines in which a plurality of the spinning nozzles are arranged in one direction are provided in parallel.
(C25) The dry spinning device according to any one of (C1) to (C24), and a movable collecting surface that collects the yarn spun by the dry spinning device. Nonwoven fabric manufacturing equipment.
(C26) a blower that blows out pressurized gas for drawing the yarn precursor;
A spinning nozzle that discharges the spinning stock solution to form the yarn precursor, a flow dividing substrate in which a plurality of air nozzles are formed in a plane, and an air supply path that guides the pressurized gas blown from the blower to the air nozzle are provided. The discharge unit main body,
A heating mechanism for heating and removing the solvent contained in the yarn precursor,
Using a dry spinning apparatus in which one or a plurality of the spinning nozzles are respectively arranged corresponding to the plurality of air nozzles,
While circulating the spinning stock solution through the stock solution circulation hole provided in the nozzle body of the spinning nozzle,
Forming the yarn precursor by discharging the spinning dope from the tip of the nozzle body before the opening on the downstream side of the air nozzle,
The formed yarn precursor is guided in the downstream direction by the wind pressure of the pressurized gas flowing through the air nozzle and discharged from the opening of the air nozzle,
Next, the spinning method is characterized by spinning the yarn by heating the yarn precursor discharged from the opening of the air nozzle by the heating mechanism.

Still further, the above embodiments include the following technical ideas.
(1) a blower that blows out pressurized gas for drawing the yarn precursor;
A spinning nozzle that discharges the spinning stock solution to form the yarn precursor, a flow dividing substrate in which a plurality of air nozzles are defined in a plane, an air supply path that guides the pressurized gas blown from the blower to the air nozzle, and A discharge unit main body provided with a storage unit provided in the middle of the air supply path;
A heating mechanism for heating and removing the solvent contained in the yarn precursor,
The spinning nozzle has a nozzle body, and a stock solution circulation hole that is formed inside the nozzle body and circulates the spinning solution.
One or a plurality of spinning nozzles are respectively arranged corresponding to a plurality of the air nozzles,
The tip of the nozzle body does not protrude from the air nozzle, and at least a part of the peripheral side surface of the nozzle body is exposed to the inside of the reservoir, and the pressurized gas introduced into the reservoir is the nozzle body The dry spinning apparatus is characterized in that the yarn precursor is drawn by being rectified on the peripheral side surface of the yarn and diverted by the air nozzle.
(2) The discharge unit body includes a nozzle substrate,
The nozzle substrate includes a substrate body and a plurality of the spinning nozzles provided on one surface of the substrate body,
The one surface of the substrate body and the flow dividing substrate face each other,
The dry spinning apparatus according to (1), wherein the storage section is provided between the nozzle substrate and the flow dividing substrate.
(3) The dry spinning apparatus according to (2) above, further comprising a spacer for providing the storage section between the nozzle substrate and the flow dividing substrate.
(4) The dry spinning apparatus according to (2) or (3), wherein two or more spinning nozzles are detachably attached to the substrate body.
(5) On the side of the storage portion of the flow dividing substrate, a reduced diameter portion having an opening width that decreases from the storage portion side toward the distal end side of the air nozzle is provided (1) to (4). The dry spinning apparatus according to any one of the above.
(6) The heating mechanism includes an infrared heater installed along the extension direction of the yarn precursor that is discharged and stretched from the spinning nozzle,
From the above (1) to (5), the infrared heater heats and removes the solvent contained in the yarn precursor by irradiating the yarn precursor with infrared rays directly and / or by radiation. ). The dry spinning apparatus according to any one of the above.
(7) The dry spinning according to (6) above, wherein a heat insulating layer for reducing heat conduction from the infrared heater to the spinning nozzle is provided between the flow dividing substrate and the infrared heater. apparatus.
(8) The heat insulating layer includes a heat insulating plate fixed between the flow dividing substrate and the infrared heater,
(7), wherein an air layer capable of arousing outside air is provided between the flow dividing substrate and the heat insulating plate and / or between the heat insulating plate and the infrared heater. Dry spinning equipment.
(9) The yarn precursor adhesion-preventing layer is provided on the side of the installation surface of the dry spinning device from the tip of the spinning nozzle and in a region facing the installation surface. The dry spinning apparatus according to any one of (1) to (8) above.
(10) having a head for storing the air supply path that guides the pressurized gas blown from the blower to the air nozzle, and the liquid supply path that guides the spinning stock solution to the spinning nozzle;
The substrate body has two or more alignment pin holes, and the bottom plate of the head has alignment pin retaining holes corresponding to the alignment pin holes, The nozzle substrate can be aligned at a predetermined position with respect to the head by inserting a pin into the alignment pin hole and the alignment pin retaining hole,
The board body and the flow dividing board are provided with a plurality of bolt insertion holes communicating with each other in a stacked state, and the diameter of the bolt insertion hole provided in the flow dividing board is provided in the board body. Smaller than the hole diameter of the bolt insertion hole,
The bottom plate of the head is provided with a threaded bolt retaining hole corresponding to each of the bolt insertion holes, and by inserting a bolt into the bolt insertion hole and the bolt retaining hole, the pin is The dry spinning apparatus according to any one of (2) to (4), wherein the nozzle substrate inserted and the flow dividing substrate into which the bolt is inserted can be aligned with the head.
(11) The stock solution circulation hole has a hole diameter on the spinning stock solution inflow side of the spinning nozzle that is larger than a hole size on the spinning stock solution discharge side and extends from the spinning stock solution inflow side, and extends from the spinning stock solution discharge side. The dry spinning device according to any one of (1) to (10), wherein the straight cylindrical hole is continuous through a step.
(12) A spinning stock solution inlet into which the spinning stock solution flows and a spinning stock solution outlet for feeding the spinning stock solution to the spinning nozzle are provided between the hopper of the spinning stock solution and the spinning nozzle, and is supplied from the hopper. A stock solution chamber for storing the stock solution to be spun and then diverting to a plurality of the spinning nozzles;
In the undiluted solution chamber, a diversion assisting member is installed,
The diversion auxiliary member is thickest in the vicinity of the spinning dope inlet, and becomes thinner as the distance from the spinning dope inlet increases.
Any one of (1) to (11) above, wherein the clearance between the diversion assisting member and the stock solution chamber is such that the clearance near the spinning stock solution inlet is extremely small and the distance from the spinning stock solution inlet increases. The dry spinning apparatus according to any one of the above.
(13) Two or more nozzle lines in which a plurality of the spinning nozzles are arranged in one direction are provided in parallel,
A blower that blows air to the yarn precursor from the side of the yarn precursor to be stretched, and has a first blower and a second blower that face each other through the yarn precursor;
The dry spinning according to any one of (1) to (12), wherein the wind direction of the wind blown from the first blower and the second blower is directed to the downstream direction of the yarn precursor. apparatus.
(14) The wind direction of the wind blown from the first air blowing unit and the second air blowing unit is a downstream direction of the yarn precursor and is opposite to each other with respect to the arrangement direction of the spinning nozzles ( 13) The dry spinning apparatus described in 13).
(15) The dry spinning according to (13) or (14), wherein the first blower and the second blower have a wind direction adjusting mechanism for adjusting a wind direction of the wind blown from the blower. apparatus.
(16) The wind direction adjusting mechanism is a flap provided in the first air blowing unit and the second air blowing unit,
The dry spinning device according to any one of (13) to (15), wherein one or more flaps are provided in the blowing direction.
(17) The dry spinning apparatus according to any one of (1) to (16) above, and a movable collection surface that collects the yarn spun by the dry spinning apparatus. Nonwoven fabric manufacturing equipment.
(18) a blower that blows out a pressurized gas for drawing the yarn precursor;
A discharge unit main body provided with a spinning nozzle that discharges the spinning raw solution to form a yarn precursor;
A heating mechanism for heating and removing the solvent contained in the yarn precursor,
Two or more nozzle lines in which a plurality of the spinning nozzles are arranged in one direction are provided in parallel, and the yarn precursor discharged from one nozzle line and the other nozzle lines adjacent thereto are discharged. A dry spinning apparatus characterized in that the yarn precursor is brought into contact with each other.
(19) The dry type according to (18), wherein the tip of each spinning nozzle in one nozzle line and the tip of each spinning nozzle in another nozzle line adjacent to the nozzle line are arranged to face each other. Spinning device.
(20) The discharge unit main body includes a plurality of nozzle substrates,
The nozzle substrate includes a substrate body, and one or a plurality of the nozzle lines provided on one surface of the substrate body,
The nozzle center axis of each spinning nozzle in the plurality of nozzle lines is oriented in a substantially normal direction with respect to the substrate body;
The intersection angle between the surface of the nozzle substrate on which the spinning nozzle is provided and the surface of the other nozzle substrate on which the spinning nozzle is provided is less than 180 °, as described in (18) or (19) above. Dry spinning equipment.
(21) The discharge unit body includes a nozzle substrate, and the nozzle substrate includes a substrate body and a plurality of the nozzle lines provided on one surface of the substrate body,
The nozzle center axes of the plurality of spinning nozzles in one nozzle line are inclined in the same direction with respect to the substrate body, and the nozzle center axes of the plurality of spinning nozzles in another nozzle line are the substrate body. The dry spinning apparatus according to (18) or (19), wherein the dry spinning apparatus is inclined in the same direction.
(22) A first surface including the nozzle center axis of the plurality of spinning nozzles in one nozzle line, and a second surface including the nozzle middle axes of the plurality of spinning nozzles in another nozzle line adjacent thereto. The dry spinning apparatus according to any one of (18) to (21), wherein the surface intersects the surface.
(23) The dry spinning apparatus according to (22), wherein the first surface and the second surface intersect at an upstream side of a region heated by a heating mechanism.
(24) a first air blowing unit and a second air blowing unit which are air blowing units for blowing air to the yarn precursor from the side of the yarn precursor to be stretched and are opposed to each other via the yarn precursor;
The dry spinning according to any one of (18) to (23), wherein the wind direction of the wind blown from the first blower and the second blower is directed to the downstream direction of the yarn precursor. apparatus.
(25) The wind direction of the wind blown from the first air blowing unit and the second air blowing unit is a downstream direction of the yarn precursor and is opposite to each other with respect to an arrangement direction of the spinning nozzles ( 24) The dry spinning apparatus described in 24).
(26) The dry spinning according to (24) or (25), wherein the first blower and the second blower have a wind direction adjusting mechanism for adjusting a wind direction of the wind blown from the blower. apparatus.
(27) The wind direction adjusting mechanism is a flap provided in the first air blowing unit and the second air blowing unit,
The dry spinning apparatus according to (26), wherein one or more flaps are provided in the blowing direction.
(28) A pressurized gas for drawing the yarn precursor is blown from the blower, and a plurality of spinning nozzles are arranged in parallel in one direction, and a plurality of spinning nozzles are provided in parallel at a nozzle portion to spin from the plurality of spinning nozzles. A discharge step of discharging a stock solution to form a yarn precursor;
The approaching step performed after the ejecting step for bringing the yarn precursor ejected from one nozzle line and the yarn precursor ejected from another nozzle line adjacent to the nozzle precursor into contact with each other;
A heating step carried out after the shifting step, wherein the solvent contained in the yarn precursor is removed by heating with a heating mechanism;
A spinning method comprising:
(29) In the shifting step, in the nozzles of the plurality of spinning nozzles in the first surface including the nozzle center axis of the plurality of spinning nozzles in one nozzle line and the other nozzle lines adjacent thereto. The dry spinning apparatus according to (28), wherein the second surface including the axis intersects the second surface.
(30) a blower that blows out a pressurized gas for stretching the yarn precursor;
A spinning nozzle that discharges the spinning dope to make the yarn precursor;
A dry spinning apparatus comprising a heating mechanism for heating and removing the solvent contained in the yarn precursor,
When the flow direction in which the yarn precursor discharged from the spinning nozzle extends is the downstream direction,
A movable collecting surface for collecting on the surface the yarn precursor extending in the downstream direction or the yarn made of the yarn precursor;
A substrate feeding portion for feeding the substrate to the movable collection surface,
The movable collection surface continuously changes the collection start point at which the yarn precursor or the yarn reaches the movable collection surface to start collection, and the collected yarn Operating in the direction of feeding the precursor or the yarn further downstream,
By sending the substrate to the movable collection surface on the near side from the collection start point, the substrate feeding unit,
A dry spinning apparatus, wherein the yarn precursor or the yarn is laminated on the substrate.
(31) The movable speed when the movable collection surface continuously changes the collection start point is 0.3 times or more the discharge speed of the yarn precursor discharged from the spinning nozzle. The dry spinning apparatus as described in (30) above.
(32) The movable speed at which the movable collection surface continuously changes the collection start point is equal to or higher than the discharge speed of the yarn precursor discharged from the spinning nozzle (30) or The dry spinning apparatus according to (31).
(33) The movable collection surface is an outer surface of a pair of rotary collection drums that rotate inward from each other;
While having the collection start point on the near side from the shortest distance between the pair of rotary collection drums,
Any of (30) to (32) above, wherein the substrate feeding section feeds the substrate to the front side of the collection start point on at least the outer surface of one of the pair of rotary collecting drums. The dry spinning apparatus according to claim 1.
(34) While the substrate feeding portion feeds the substrate to each of the pair of rotary collection drums on the near side from the collection start point,
The dry spinning according to (33), wherein the two substrates facing each other through the yarn precursor or the yarn are pressed from the outer surface in a region where the distance between the pair of rotary collecting drums is shortest. apparatus.
(35) having a first substrate and a second substrate facing the first substrate;
A laminate comprising an intermediate layer containing pullulan fibers and a non-aqueous solvent between the first substrate and the second substrate.
(36) The laminate according to (35), wherein the pullulan fiber forms a row of single fibers between the first substrate and the second substrate.
(37) The non-aqueous solvent is an insulating oil and the intermediate layer is an insulating layer.
By the first substrate and the second substrate being a conductive layer containing a conductive member,
The laminated body according to (35) or (36), which constitutes a capacitor.

The present invention further includes the following technical ideas.
(A-1) The above-described (1) to (12), which includes a plurality of the spinning nozzles, and is arranged so that the tip of any one of the spinning nozzles faces the tip of the other spinning nozzle. Dry spinning equipment.
(A-2) The discharge unit body includes a plurality of nozzle substrates,
The nozzle substrate includes a substrate body, and a plurality of the spinning nozzles provided on one surface of the substrate body,
Each nozzle center axis of the plurality of spinning nozzles is oriented in a substantially normal direction with respect to the substrate body;
The dry type according to (A-1), wherein an intersection angle between the surface of the one nozzle substrate on which the spinning nozzle is provided and the surface of the other nozzle substrate on which the spinning nozzle is provided is less than 180 °. Spinning device.
(A-3) The discharge unit body includes a nozzle substrate,
The nozzle substrate includes a substrate body, and a plurality of the spinning nozzles provided on one surface of the substrate body,
The dry spinning apparatus according to (A-1), wherein each nozzle center axis of the plurality of spinning nozzles is inclined with respect to the substrate body.
(A-4) The nozzle center axis of any one of the spinning nozzles and the nozzle center axis of another spinning nozzle intersect at the upstream side of the region heated by the heating mechanism (A- The dry spinning apparatus according to any one of 1) to (A-3).
The present invention further includes the following technical ideas.
(B-1) A slurry-like spinning dope is prepared, and a plurality of the spinning nozzles are arranged in one direction, and a plurality of the spinning nozzles parallel to the first nozzle line are one A second nozzle line arranged in a direction, and a yarn precursor discharging step of discharging the spinning solution to form a yarn precursor;
From the first air blowing part and the second air blowing part that face each other via the yarn precursor, the air blowing step of blowing air to the side of the yarn precursor,
In the yarn precursor discharging step, the viscosity of the spinning dope sent to the first nozzle line is adjusted to be larger than the viscosity of the spinning dope sent to the second nozzle line Method.
(B-2) In the air blowing step, the wind direction of the air blown from the first air blowing unit and the second air blowing unit is a downstream direction of the yarn precursor and with respect to an arrangement direction of the spinning nozzles. The fiber manufacturing method as described in said (B-1) adjusted to a mutually reverse direction.
(B-3) The yarn precursor discharged from the first nozzle line and the yarn precursor discharged from the second nozzle line in any one or combination of the yarn precursor and the air blowing step. The fiber manufacturing method in any one of the said (B-1) or (B-2) which brings together so that contact is possible.

DESCRIPTION OF SYMBOLS 1 Dry-type spinning apparatus 2 Hopper 3 Supply pipe 3a Supply path 4, 4a Head 5 Stock solution chamber 6 Nozzle substrate 7 Spacer 8 Throttle plate 9 Dividing substrate 10 Blower 11 Supply pipe 11a Supply path 12 Yarn precursor 13 Heat insulation layer 14 Housing Body 15 Infrared heater 16 Radiation plate 17 Yarn 18 Collection drum 19 Non-woven fabric 21 Non-woven fabric manufacturing device 22 Air layer 30 Substrate body 31 Spinning nozzle 32 Air supply hole 33 Alignment pin hole 34, 35, 38, 41 Bolt insertion hole 36 Restriction hole 37 Restriction hole inner wall 40 Air nozzles 42, 42a Stock solution circulation hole 43 Nozzle body 44 Reserving part 51 Spinning auxiliary member 52 Spinning stock solution inlet 53 Bottom plate 54 Alignment pin 55 Alignment pin retaining holes 57a, 57b, 57c Adhesion prevention layer 58 Drum Roll 59 Rotating table 60 Spinning solution discharge port 61 Air nozzle formation area 70 Substrate, first substrate, Second substrate 70A Substrate 70B Substrate 72 Intermediate layer 80 Laminated body 81 Laminated body 82 Laminated body 85 Third substrate, fourth substrate 99 Nonaqueous solvent 101 Hole 102 Male screw 103 Female screw 104, 105, 106 Hole 110 Cooling tube 111 Tubular air supply Path 112 First baffle plate 114 Second baffle plate 116 Inclined surface 201 Dry spinning device 221 Non-woven fabric production device 310 Nozzle substrate 311 Nozzle line 350 Dividing substrate 352 Air nozzle 380 Drawing plate 390 Dividing substrate 400 Nozzle line 401 Dry spinning device 402 Nozzle line 406 Nozzle substrate 421 Non-woven fabric production apparatus 430 First blower 431 Flap 435 Flap 440 Second blower 441 Flap 445 Flap 500 Dry spinning device 501 Movable collection surface 505 Rotating collection drum 510 Substrate feeding part 520 Winding roller 5 DESCRIPTION OF SYMBOLS 0 Movable collection surface 535 Belt conveyor 536 Belt conveyor 537 Lower conveyance apparatus 540 Opposite conveyance surface 550 Winding part 600 Substrate sending-in part 610 Slit 700 Dry spinning apparatus 801A, 801B, 801C Electrode 910 Opening convex part 912 Second supply pipe 914 Fixing part 916 Cooling mechanism 918 Air supply path 920 which is a storage part Complement plate 922 Flow path 930 Heating area a, b, c, L, L1, L2, L3 Distance d, e, f Hole diameter s, t Arrow

Claims (2)

A blower that blows out a pressurized gas for drawing the yarn precursor;
A plurality of spinning nozzle to the yarn precursor spinning dope discharged respectively,
A heating mechanism for heating remove solvent contained the installed along the extension direction of the yarn precursor which extends discharged from the spinning nozzle to the yarn precursor,
A first air blowing section and a second air blowing section for blowing air to the yarn precursor from the side of the yarn precursor that is discharged from the spinning nozzle and stretched, and
Having one or a plurality of nozzle lines in which a plurality of the spinning nozzles are arranged;
The first air blowing part and the second air blowing part are opposed to each other via the yarn precursor discharged from the nozzle line,
The dry spinning apparatus characterized in that the wind direction of the wind blown from the first blower and the second blower is directed to the downstream direction of the yarn precursor .   The heating mechanism includes an infrared heater, and a plurality of radiation plates that irradiate the yarn precursor with infrared rays from the infrared heater,
  An air flow channel is provided between the adjacent radiation plates, and the wind blown from the first air blowing unit and the second air blowing unit reaches the yarn precursor through the channel. The dry spinning apparatus according to claim 1.

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