JP2012197526A - Separator manufacturing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a separator manufacturing apparatus capable of mass-producing high quality separators having desired characteristics with high productivity without causing what is called a droplet phenomenon.SOLUTION: A separator manufacturing apparatus 1 for manufacturing a separator having a layered structure of a first fiber layer of first fiber and a second fiber layer of second fiber having a smaller average diameter than the first fiber, comprises: a long sheet conveying device 10 including a conveying mechanism 19 for conveying a long sheet and a long sheet turning mechanism 15; a melt-blow spinning device 20 for forming the first fiber layer on one face of the long sheet 110; and an electrospinning device 40 for forming the second fiber layer above the one face of the long sheet. The melt-blow spinning device 20, the long sheet turning mechanism 15 and the electrospinning device 40 are arranged in this order along a conveying direction of the long sheet.

Description

  The present invention relates to a separator manufacturing apparatus.

  2. Description of the Related Art Conventionally, a separator manufacturing apparatus that manufactures a separator having a structure in which two or more fiber layers made of fibers having different properties are laminated is known (see, for example, Patent Document 1).

  FIG. 22 is a view for explaining a conventional separator manufacturing apparatus 800. In FIG. 22, reference numeral 810 indicates a base material, reference numeral 842 indicates a nozzle unit, reference numeral 843 indicates a nozzle, and reference numeral 849 indicates a power supply device. FIG. 23 is a diagram illustrating a configuration of a separator 900 manufactured by a conventional separator manufacturing apparatus 800.

  When manufacturing a separator having a structure in which two or more fiber layers made of fibers having different properties are laminated using the conventional separator manufacturing apparatus 800 shown in FIG. 22, first, one separator manufacturing apparatus 800 is used. Then, a fiber layer 910 having a predetermined property is formed on the surface of the substrate 810 by electrospinning, and then the fiber layer 910 is formed on the surface of the fiber layer 910 by electrospinning using another separator manufacturing apparatus 800. Another fiber layer 920 having different properties is formed. Thereby, the separator 900 having a structure in which two or more fiber layers (fiber layer 910 and another fiber layer 920) made of fibers having different properties are laminated can be manufactured.

  According to the conventional separator manufacturing apparatus 800, a separator having a structure in which two or more fiber layers made of fibers having different properties can be manufactured by using a plurality of the apparatuses, so that desired properties can be obtained. It becomes possible to manufacture the separator which has. For example, as the fiber layer 910, a relatively thick fiber layer having high mechanical strength is formed, and as another fiber layer 920, there are many fine and uniform voids, and high insulation, high ion conductivity, and high By forming a relatively thin fiber layer having dendrite resistance, it is considered that a separator having high mechanical strength, high insulation, high ionic conductivity, and high dendrite resistance can be produced. Such a separator can be suitably used for a battery (including a primary battery and a secondary battery), a capacitor (also referred to as a capacitor), and the like.

JP 2010-103050 A

  However, in the conventional separator manufacturing apparatus 800, it is necessary to re-install the fiber layer 910 in the other separator manufacturing apparatus after forming the fiber layer 910 having a predetermined property on the surface of the base material by one separator manufacturing apparatus. There is. Therefore, it takes time and labor, and as a result, there is a problem that it is difficult to mass-produce separators having desired properties with high productivity.

  Further, in the conventional separator manufacturing apparatus 800, fibers are deposited from above to form a fiber layer, so that a so-called droplet phenomenon (a lump of polymer solution that has not been spun from a downward nozzle is a long sheet or a base material layer as it is. Phenomenon), it becomes difficult to form a high-quality fiber layer, and thus it may be difficult to produce a high-quality separator.

  Accordingly, the present invention has been made to solve the above-described problems, and is a separator capable of mass-producing a high-quality separator having desired properties with high productivity without causing a droplet phenomenon. An object is to provide a manufacturing apparatus.

[1] The separator manufacturing apparatus of the present invention includes a first fiber layer made of first fibers having a predetermined average diameter and a second fiber layer made of second fibers having an average diameter smaller than the first fibers. A separator manufacturing apparatus that manufactures a separator having a structure in which at least the first fiber layer and the second fiber layer are laminated, and a transport mechanism that transports a long sheet, and the long sheet is transported A long sheet conveying device comprising a long sheet reversing mechanism for reversing the long sheet so that the direction of one side of the long sheet and the direction of the other side are opposite to each other during A melt blow spinning device for depositing the first fibers from above to form a first fiber layer on one side of the long sheet, and the long fibers by depositing the second fibers from below using an upward nozzle. An electrospinning device for forming a second fiber layer on one surface of the sheet, and the melt blow spinning device, the long sheet reversing mechanism, and the electrospinning device are arranged in this order or in the reverse order. It arrange | positions along the conveyance direction of a long sheet, It is characterized by the above-mentioned.

  For this reason, according to the separator manufacturing apparatus of the present invention, the melt blow spinning device, the long sheet reversing mechanism, and the electrospinning device are arranged along the conveying direction of the long sheet in this order or the reverse order. Therefore, after the first fiber layer or the second fiber layer is formed on one surface of the long sheet by the melt blow spinning device or the electro spinning device, the one side of the long sheet is continuously processed by the electro spinning device or the melt blow spinning device. Thus, it is possible to form the second fiber layer or the first fiber layer, and it is possible to mass-produce separators having desired properties with high productivity.

  In addition, according to the separator manufacturing apparatus of the present invention, the apparatus includes the electrospinning device that deposits the second fibers from below using the upward nozzle and forms the second fiber layer on one surface of the long sheet. The droplet phenomenon which is seen in the separator manufacturing apparatus using this is not generated.

  As a result, the separator manufacturing apparatus of the present invention is a separator manufacturing apparatus capable of mass-producing a high-quality separator having desired properties with high productivity without causing a droplet phenomenon.

  In the present invention, the first fiber means a fiber made of a polymer material and having an average diameter of 100 nm to 10 μm. The second fiber is a so-called nanofiber made of a polymer material and having an average diameter of several nm to several thousand nm.

[2] In the separator manufacturing apparatus of the present invention, the melt blow spinning device, the long sheet reversing mechanism, and the electrospinning device are arranged in this order along the conveying direction of the long sheet, The electrospinning apparatus is disposed above or below the melt blow spinning apparatus, and the long sheet reversing mechanism reverses the long sheet from the melt blow spinning apparatus in accordance with a height position of the electro spinning apparatus. It is preferable.

  By setting it as such a structure, it becomes possible to manufacture the separator which has a structure where the 1st fiber layer and the 2nd fiber layer were laminated | stacked, without enlarging the installation area of a separator manufacturing apparatus so much.

[3] In the separator manufacturing apparatus of the present invention, the melt blow spinning device, the long sheet reversing mechanism, and the electrospinning device are arranged in the reverse order to the long sheet conveying direction. And the melt blow spinning device is disposed above or below the electro spinning device, and the long sheet reversing mechanism is adapted to a height position of the melt blow spinning device to adjust the length from the electro spinning device. It is preferable to invert the sheet.

  Even with such a configuration, it is possible to manufacture a separator having a structure in which the first fiber layer and the second fiber layer are laminated without significantly increasing the installation area of the separator manufacturing apparatus.

[4] In the separator manufacturing apparatus of the present invention, the separator is a separator having a structure in which the first fiber layers and the second fiber layers are alternately laminated, and the melt blow spinning apparatus and the electrospinning Corresponding to the structure of the separator, the long sheet reversing mechanism is disposed between the melt blow spinning device and the electrospinning device which are arranged along the conveying direction of the long sheet and are adjacent to each other. It is preferable that they are arranged.

  By setting it as such a structure, it becomes possible to manufacture the separator which has a structure where the 1st fiber layer and the said 2nd fiber layer were laminated | stacked alternately.

[5] In the separator manufacturing apparatus of the present invention, it is preferable that the separator is composed of a laminate including the first fiber layer and the second fiber layer.

  Thus, according to the separator manufacturing apparatus of this invention, it becomes possible to manufacture the separator which consists of a laminated body comprised from a 1st fiber layer and a 2nd fiber layer.

[6] In the separator manufacturing apparatus of the present invention, the separator includes a base material layer that constitutes the long sheet, and a laminate that includes the first fiber layer and the second fiber layer. Is preferred.

  Thus, according to the separator manufacturing apparatus of this invention, the separator which consists of the base material layer which comprises a elongate sheet | seat, and the laminated body comprised from a 1st fiber layer and a 2nd fiber layer can be manufactured. It becomes possible.

[7] The separator manufacturing apparatus of the present invention includes a first fiber layer made of first fibers having a predetermined average diameter and a second fiber layer made of second fibers having an average diameter smaller than the first fibers. A separator manufacturing apparatus that manufactures a separator having a structure in which at least the first fiber layer and the second fiber layer are laminated, and uses a long sheet conveying apparatus that conveys a long sheet and a downward nozzle A melt blow spinning device for depositing the first fibers on one surface of the long sheet from above to form a first fiber layer on one surface of the long sheet, and a downstream of the melt blow spinning device, A sheet separation device that separates a long sheet and the first fiber layer, and a first fiber that is disposed downstream of the sheet separation device and conveys the first fiber layer separated by the sheet separation device Electrospinning in which a second fiber layer is formed on one side of the first fiber layer by depositing the second fiber from below using one of the upward nozzles on one side of the first fiber layer being conveyed And a device.

  For this reason, according to the separator manufacturing apparatus of the present invention, since the second fiber layer can be formed on one surface of the first fiber layer separated from the long sheet by the sheet separating apparatus, the first fiber layer and the first fiber layer A separator having a structure in which two fiber layers are laminated and a separator having desired properties can be mass-produced with high productivity.

  Moreover, according to the separator manufacturing apparatus of this invention, since it has an electrospinning apparatus which deposits a 2nd fiber from the downward direction using an upward nozzle and forms a 2nd fiber layer in the one surface of a 1st fiber layer, it faces downward A droplet phenomenon as seen in a separator manufacturing apparatus using a nozzle does not occur.

  As a result, the separator manufacturing apparatus of the present invention is a separator manufacturing apparatus capable of mass-producing a high-quality separator having desired properties with high productivity without causing a droplet phenomenon.

[8] In the separator manufacturing apparatus of the present invention, the separator is a separator having a structure in which the second fiber layer is formed on one side and the other side of the first fiber layer, and the electrospinning apparatus includes: 1st fiber which is arrange | positioned in the back | latter stage and inverts the said 1st fiber layer so that the direction of the one surface and the other surface of the said 1st fiber layer may become opposite in the middle of the said 1st fiber layer being conveyed A layer reversing mechanism and a first fiber layer reversing mechanism, which is disposed downstream of the first fiber layer and deposits the second fiber from below using an upward nozzle to form a second fiber layer on the other surface of the first fiber layer. It is preferable to further comprise a two-electrospinning device.

  By setting it as such a structure, it becomes possible to manufacture the separator which has the structure where the 2nd fiber layer was formed in the one side and the other side in a 1st fiber layer.

[9] In the separator manufacturing apparatus of the present invention, the separator is a separator having a structure in which the second fiber layer and the first fiber layer are laminated in this order on one surface of the first fiber layer. And the first fiber is disposed at a subsequent stage of the electrospinning apparatus, and the first fiber layer is opposite in the direction of one surface and the other surface of the first fiber layer while being conveyed. A first fiber layer reversing mechanism for reversing the layers, and a second fiber in the first fiber layer that is disposed downstream of the first fiber layer reversing mechanism and deposits the first fibers from above using a downward nozzle. It is preferable to further comprise a melt blow spinning device for forming the first fiber layer on the surface on which the layer is formed.

  By setting it as such a structure, it becomes possible to manufacture the separator which has a structure where the 2nd fiber layer and the 1st fiber layer were laminated | stacked in this order on the one side of the 1st fiber layer.

1 is a front view of a separator manufacturing apparatus 1 according to Embodiment 1. FIG. It is a figure shown in order to demonstrate the separator 100 in Embodiment 1. FIG. It is a figure shown in order to demonstrate the melt blow spinning apparatus 20 in Embodiment 1. FIG. It is a figure shown in order to demonstrate the electrospinning apparatus 40 in Embodiment 1. FIG. FIG. 3 is a diagram for explaining a method for manufacturing a separator in the first embodiment. It is a figure shown in order to demonstrate the separator 100 in Embodiment 1. FIG. It is a front view of the separator manufacturing apparatus 2 which concerns on Embodiment 2. FIG. It is a figure shown in order to demonstrate the separator 100 in Embodiment 2. FIG. It is a front view of the separator manufacturing apparatus 3 which concerns on Embodiment 3. FIG. It is a figure shown in order to demonstrate the separator 100a in Embodiment 3. FIG. It is a figure shown in order to demonstrate the separator 100b in the modification 1. FIG. It is a front view of the separator manufacturing apparatus 4 which concerns on Embodiment 4. FIG. It is a figure which shows the structure of the separator 100c in Embodiment 4. FIG. It is a front view of the separator manufacturing apparatus 5 which concerns on Embodiment 5. FIG. It is a figure which shows the structure of the separator 100d in Embodiment 5. FIG. It is a front view of the separator manufacturing apparatus 6 which concerns on Embodiment 6. FIG. It is a figure which shows the structure of the separator 100e in Embodiment 6. FIG. 10 is a front view of a separator manufacturing apparatus 7 according to Embodiment 7. FIG. It is a figure which shows the structure of the separator 100f which concerns on Embodiment 7. FIG. It is a figure which shows the structure of the separator 100g in the modification 2. 10 is a front view of a separator manufacturing apparatus 8 according to Embodiment 8. FIG. It is a figure shown in order to demonstrate the conventional separator manufacturing apparatus 800. FIG. It is a figure which shows the structure of the separator 900 in the past.

  Hereinafter, the separator manufacturing apparatus of this invention is demonstrated based on embodiment shown in a figure.

[Embodiment 1]
1. Separator manufacturing apparatus First, the configuration of the separator manufacturing apparatus 1 according to the first embodiment will be described.
FIG. 1 is a front view of a separator manufacturing apparatus 1 according to the first embodiment. In FIG. 1, some members are shown as cross-sectional views. FIG. 2 is a diagram for explaining the separator 100 according to the first embodiment. FIG. 3 is a view for explaining the melt blow spinning apparatus 20 according to the first embodiment. 3A is a front view of the melt blow spinning apparatus 20, and FIG. 3B is a plan view of the melt blow spinning apparatus 20. FIG. FIG. 4 is a diagram for explaining the electrospinning apparatus 40 according to the first embodiment. 4A is a front view of the electrospinning apparatus 40, and FIG. 4B is a view of the nozzle unit 42 in the electrospinning apparatus 40 as viewed from the collector 44 side. In FIG. 4B, components (upward nozzle 43 and the like) arranged below the long sheet 110 are also illustrated.

  As shown in FIG. 1, the separator manufacturing apparatus 1 according to the first embodiment includes a long sheet conveying apparatus 10, a melt blow spinning apparatus 20, and an electrospinning apparatus 40. As shown in FIG. 2, the separator manufacturing apparatus 1 is a separator manufacturing apparatus for manufacturing a separator 100 in which a first fiber layer 120 and a second fiber layer 130 are laminated.

  In the separator manufacturing apparatus 1 according to the embodiment, as shown in FIG. 1, the melt blow spinning device 20, the long sheet reversing mechanism 15 described later, and the electrospinning device 40 are conveyed in this order in the conveying direction of the long sheet 110. Are arranged along.

  As shown in FIG. 1, the long sheet conveying device 10 is configured to convey a long sheet 110 serving as a base material layer from the melt blow spinning device 20 to the electrospinning device 40. When the melt blow spinning apparatus 20 forms the first fiber layer 120, the long sheet conveying apparatus 10 conveys the long sheet 110 in the first direction (direction A1 in FIG. 1), and the melt blow spinning apparatus 20 performs the first process. After the fiber layer 120 is formed, the long sheet 110 is conveyed from the height position of the melt blow spinning device 20 to the height position of the electrospinning device 40 in a second direction (A2 direction) substantially perpendicular to the first direction. When the electrospinning device 40 forms the second fiber layer 130, the long sheet 110 is conveyed in a third direction (A3 direction) opposite to the first direction.

  The long sheet conveyance device 10 includes a conveyance mechanism 19 that conveys the long sheet 110, and the direction of one side and the other side of the long sheet 110 are reversed while the long sheet 110 is being conveyed. The long sheet reversing mechanism 15 for reversing the long sheet 110 is provided.

The conveyance mechanism 19 that conveys the long sheet 110 includes a feeding roller 11 that unwinds the long sheet 110, a take-up roller 12 that winds the long sheet 110, a tension roller 13 that adjusts the tension of the long sheet 110, A plurality of driving rollers 14 for conveying the long sheet 110 and an auxiliary roller 18 for assisting the conveyance of the long sheet are provided.
The plurality of driving rollers 14 are driving devices that convey the long sheet 110.

  The feeding roller 11, the take-up roller 12, and the plurality of drive rollers 14 are each configured to be rotationally driven by a drive motor (not shown). The rollers other than those described above may also be configured to be rotationally driven by a drive motor or the like.

  The long sheet reversing mechanism 15 includes a first reversing roller 16a that directs the conveying direction of the long sheet 110 from the melt blow spinning device 20 and an electrospinning device that conveys the long sheet 110 from the first reversing roller 16a. And a second reversing roller 16b facing 40. The long sheet reversing mechanism 15 reverses the long sheet 110 from the melt blow spinning device 20 in accordance with the height position of the electrospinning device 40.

  As shown in FIGS. 1 and 3, the melt blow spinning device 20 is arranged in front of the long sheet reversing mechanism 15, and the first is formed on one surface of the long sheet 110 from above using a downward nozzle 23 (described later). Fibers are deposited to form the first fiber layer 120.

Hereinafter, the configuration of the melt blow spinning apparatus 20 will be described in detail.
As shown in FIG. 3, the melt blow spinning device 20 includes a nozzle unit 22, a high temperature air flow supply mechanism 24, an air flow suction mechanism 27, and a first polymer solution supply unit (not shown).

  The nozzle unit 22 was discharged from a plurality of downward nozzles 23 for discharging the first polymer solution (raw material of the first fiber) supplied from the first polymer solution supply unit downward from the discharge port, and the plurality of downward nozzles 23. A high-temperature air flow supply path (not shown) for flowing a high-temperature air stream toward the first polymer solution is provided. Nozzle units having various sizes and various shapes can be used in the separator manufacturing apparatus of the present invention.

  The high-temperature air flow supply mechanism 24 heats the external air sucked by the suction pump 25 by the heater 26. At this time, the heated air is supplied as a high-temperature air flow to the nozzle unit, and is injected toward the first polymer solution discharged from the plurality of downward nozzles 23 through a high-temperature air flow supply path (not shown). The first polymer solution becomes a first fiber by being stretched by a high-temperature air stream, and the first fiber is deposited on the long sheet 110 to form the first fiber layer 120.

  The airflow suction mechanism 27 includes a mesh member 28, a high-temperature airflow suction unit 30, and a high-temperature airflow discharge device 31. The airflow suction mechanism 27 sucks the high-temperature airflow injected toward the first polymer solution into the high-temperature airflow suction unit 30 through the mesh member 28 located on the opposite surface of the long sheet 110 when viewed from the nozzle unit 22. Then, it is discharged to the outside by the high temperature airflow discharge device 31.

  As shown in FIGS. 1 and 4, the electrospinning device 40 is disposed at a stage subsequent to the long sheet reversing mechanism 15, and the second is formed on one side of the long sheet 110 from below using an upward nozzle 43 (described later). The fibers are deposited to form the second fiber layer 130.

Hereinafter, the configuration of the electrospinning apparatus 40 will be described in detail.
As shown in FIG. 4, the electrospinning device 40 includes a housing 41, a nozzle unit 42, a second polymer solution supply unit (not shown), a collector 44, a power supply device 49, and an auxiliary belt device 46. With.

The housing 41 is made of a conductor.
The nozzle unit 42 has a plurality of upward nozzles 43.
Nozzle units having various sizes and various shapes can be used in the separator manufacturing apparatus of the present invention.

  The upward nozzle 43 is a nozzle that discharges the “second polymer solution that is a raw material of the second fiber” supplied from a polymer solution supply unit (not shown) upward from the discharge port. As a material constituting the upward nozzle 43, a conductor can be used. For example, copper, stainless steel, aluminum, or the like can be used.

  The upward nozzles 43 are arranged at a predetermined pitch (for example, a pitch of 1.5 cm to 6.0 cm). The number of upward nozzles 43 can be, for example, 36 (6 × 6 when arranged in the same vertical and horizontal directions) to 21904 (148 × 148 when arranged in the same vertical and horizontal directions).

The collector 44 is disposed above the nozzle unit 42. The collector 44 is made of a conductor, and is attached to the housing 41 via an insulating member 45 as shown in FIG.
The power supply device 49 applies a high voltage between the upward nozzle 43 and the collector 44. The positive electrode of the power supply device 49 is connected to the collector 44, and the negative electrode of the power supply device 49 is connected to the nozzle unit 42 via the housing 41.

  The auxiliary belt device 46 includes an auxiliary belt 47 that rotates in synchronization with the conveyance speed of the long sheet 110, and five auxiliary belt rollers 48 that assist the rotation of the auxiliary belt 47. Of the five auxiliary belt rollers 48, one or more auxiliary belt rollers are drive rollers, and the remaining auxiliary belt rollers are driven rollers. Since the auxiliary belt 47 is disposed between the collector 44 and the long sheet 110, the long sheet 110 is smoothly conveyed without being attracted to the collector 44 to which a positive high voltage is applied. become.

2. Method for Producing Separator Hereinafter, a method for producing a separator using the separator production apparatus 1 according to the first embodiment configured as described above (a method for producing a separator in the first embodiment) will be described.

  FIG. 5 is a view for explaining the separator manufacturing method according to the first embodiment. FIG. 5A to FIG. 5D are process diagrams. FIG. 6 is a view for explaining the separator 100 according to the first embodiment. FIG. 6A is a view showing the separator 100 in a state before being separated from the long sheet 110. FIG. 6B is a diagram illustrating the separator 100 in a state after being separated from the long sheet 110.

(A) Spinning preparation A first polymer solution and a second polymer solution are prepared and supplied to the nozzle units 22 and 42 of the melt blow spinning device 20 and the electrospinning device 40, respectively. Subsequently, the long sheet 110 is set in the long sheet conveying apparatus 10, and the long sheet 110 (see FIG. 5A) is conveyed from the feeding roller 11 toward the winding roller 12.

(B) Melt blow spinning Next, the first fiber layer 120 is formed on one surface of the long sheet 110 by the melt blow spinning device 20 while conveying the long sheet 110 (see FIG. 5B).

(C) Reversal of long sheet Next, the long sheet reversing mechanism 15 (reversing rollers 16a and 16b) causes the one surface of the long sheet 110 to face downward so that the one surface of the long sheet 110 faces downward. The direction of the other side is reversed.

(D) Electrospinning Next, the second fiber layer 130 is formed on one surface of the long sheet 110 by the electrospinning apparatus 40 while conveying the long sheet 110 on which the first fiber layer 120 is laminated. Thereby, a laminated sheet in which the first fiber layer 120 and the second fiber layer 130 are laminated on the long sheet 110 is manufactured. Thereafter, the laminated sheet is taken up by the take-up roller 12 to form a laminated body roll 140 in which the separator 100 composed of the first fiber layer 120 and the second fiber layer 130 and the long sheet 110 are taken up (FIG. 5 (c) and FIG. 6 (a)).

(E) Separation of separator and long sheet Thereafter, the separator 100 and long sheet are separated while the laminate roll 140 is fed out to manufacture the separator 100 (see FIGS. 5D and 6B). .

  A separator can be manufactured by the above method.

In the following, the spinning conditions for the separator manufacturing method in Embodiment 1 will be exemplified.
As the long sheet 110, non-woven fabric, woven fabric, knitted fabric, paper, or the like made of various materials can be used. The long sheet 110 may have a thickness of, for example, 5 μm to 500 μm. The length of the long sheet 110 can be, for example, 10 m to 10 km.

  As a polymer used as the raw material of the first fiber 120 and the second fiber 130, for example, polylactic acid (PLA), polypropylene (PP), polyvinyl acetate (PVAc), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), Polyethylene naphthalate (PEN), polyamide (PA), polyurethane (PUR), polyvinyl alcohol (PVA), polyacrylonitrile (PAN), polyetherimide (PEI), polycaprolactone (PCL), polylactic glycolic acid (PLGA), Silk, cellulose, chitosan and the like can be used.

  Examples of the solvent used in the polymer solution include dichloromethane, dimethylformamide, dimethyl sulfoxide, methyl ethyl ketone, chloroform, acetone, water, formic acid, acetic acid, cyclohexane, and THF. A plurality of types of solvents may be mixed and used. The polymer solution may contain an additive such as a conductivity improver.

  A conveyance speed can be set to 0.2 m / min-100 m / min, for example. The voltage applied to the collector 150 and the nozzle unit 110 can be set to 10 kV to 80 kV, and is preferably set to around 50 kV.

  The temperature of the spinning zone can be set to a predetermined temperature in the range of 10 ° C to 40 ° C, for example. Moreover, the humidity of a spinning area can be set to the predetermined humidity which exists in the range of 20%-60%, for example.

3. Effect of separator manufacturing equipment

  According to the separator manufacturing apparatus 1 according to the first embodiment, the melt blow spinning device 20, the long sheet reversing mechanism 15, and the electrospinning device 40 are arranged in this order along the conveying direction of the long sheet. After the first fiber layer is formed on one side of the long sheet by the spinning device 20, it is possible to continuously form the second fiber layer on one side of the long sheet by the electrospinning device 40. It becomes possible to mass-produce separators having properties with high productivity.

  Moreover, according to the separator manufacturing apparatus 1 which concerns on Embodiment 1, it is equipped with the electrospinning apparatus which deposits a 2nd fiber from the downward direction using an upward nozzle, and forms a 2nd fiber layer in one surface of a long sheet. The droplet phenomenon as seen in a separator manufacturing apparatus using a downward nozzle does not occur.

  As a result, the separator manufacturing apparatus 1 according to Embodiment 1 is a separator manufacturing apparatus capable of mass-producing a high-quality separator having desired properties with high productivity without causing a droplet phenomenon.

  Moreover, according to the separator manufacturing apparatus 1 which concerns on Embodiment 1, since the electrospinning apparatus 40 is arrange | positioned above the melt blow spinning apparatus 20, it is the 1st fiber layer, without enlarging the installation area of a separator manufacturing apparatus so much. It becomes possible to manufacture the separator which has the structure where the 2nd fiber layer was laminated | stacked.

[Embodiment 2]
FIG. 7 is a front view of the separator manufacturing apparatus 2 according to the second embodiment. FIG. 8 is a view for explaining the separator 100 according to the second embodiment.

  The separator manufacturing apparatus 2 according to the second embodiment basically has the same configuration as the separator manufacturing apparatus 1 according to the first embodiment, but the arrangement of the melt blow spinning device 20, the long sheet reversing mechanism 15, and the electrospinning device 40 is provided. The order is different from that of the separator manufacturing apparatus 1 according to the first embodiment. That is, in the separator manufacturing apparatus 2 according to the second embodiment, as shown in FIG. 7, the melt blow spinning device 20, the long sheet reversing mechanism 15, and the electrospinning device 40 are long in the reverse order. Arranged along the conveying direction of the sheet 110

  As shown in FIG. 8, the separator manufacturing apparatus 2 according to the second embodiment is for manufacturing the separator 100 in which the second fiber layer 130 and the first fiber layer 120 are laminated in this order from the long sheet 110 side. It is a separator manufacturing apparatus.

  As described above, the separator manufacturing apparatus 2 according to the second embodiment is different from the separator manufacturing apparatus 1 according to the first embodiment in the arrangement order of the melt blow spinning apparatus 20, the long sheet reversing mechanism 15, and the electrospinning apparatus 40. The melt blow spinning device, the long sheet reversing mechanism, and the electrospinning device are disposed in the reverse order along the conveying direction of the long sheet. After forming the second fiber layer, the melt blow spinning device 20 can continuously form the first fiber layer on one side of the long sheet as in the case of the separator manufacturing apparatus 1 according to the first embodiment. In addition, it is possible to mass-produce separators having desired properties with high productivity.

  Moreover, according to the separator manufacturing apparatus 2 which concerns on Embodiment 2, it is equipped with the electrospinning apparatus which deposits a 2nd fiber from the downward direction using an upward nozzle, and forms a 2nd fiber layer in one surface of a long sheet. As in the case of the separator manufacturing apparatus 1 according to Embodiment 1, the droplet phenomenon as seen in the separator manufacturing apparatus using the downward nozzle is not generated.

  As a result, as in the case of the separator manufacturing apparatus 1 according to the first embodiment, the separator manufacturing apparatus 2 according to the second embodiment can produce a high-quality separator having desired properties without causing a droplet phenomenon. It becomes a separator manufacturing apparatus that can be mass-produced with.

  The separator manufacturing apparatus 2 according to the second embodiment is the same as the separator manufacturing apparatus 1 according to the first embodiment except for the arrangement order of the melt blow spinning apparatus 20, the long sheet reversing mechanism 15 and the electrospinning apparatus 40. Since it has a structure, it has the applicable effect as it is among the effects which the separator manufacturing apparatus 1 which concerns on Embodiment 1 has.

[Embodiment 3]
FIG. 9 is a front view of the separator manufacturing apparatus 3 according to the third embodiment. FIG. 10 is a diagram for explaining the separator 100a according to the third embodiment.

  The separator manufacturing apparatus 3 according to the third embodiment basically has the same configuration as the separator manufacturing apparatus 1 according to the first embodiment, but the number of melt blow spinning apparatuses and the number of electrospinning apparatuses are the separators according to the first embodiment. Different from the case of the manufacturing apparatus 1. That is, the separator manufacturing apparatus 3 according to Embodiment 3 includes two melt blow spinning apparatuses 20 and 20a and two electrospinning apparatuses 40 and 40a as shown in FIG. In the separator manufacturing apparatus 3 according to Embodiment 3, the first fiber layer 120, the second fiber layer 130, the first fiber layer 120, and the second fiber layer 130 are laminated in this order from the long sheet 110 side. It is a separator manufacturing apparatus for manufacturing the separator 100a (refer FIG. 10).

  In the separator manufacturing apparatus 3 according to the third embodiment, the melt blow spinning apparatus 20, the electro spinning apparatus 40, the melt blow spinning apparatus 20a, and the electro spinning apparatus 40a correspond to the structure of the separator 100a. It is arrange | positioned along the conveyance direction. Further, the sheet is reversed between the adjacent melt blow spinning device 20 and the electro spinning device 40, between the electro spinning device 40 and the melt blow spinning device 20a, and between the melt blow spinning device 20a and the electro spinning device 40a. Mechanisms 15a, 15b, and 15c are arranged, respectively.

  As described above, according to the separator manufacturing apparatus 3 according to the third embodiment, the number of melt blow spinning apparatuses and the number of electrospinning apparatuses are different from those in the separator manufacturing apparatus 1 according to the first embodiment. The part where the reversing mechanism and the electrospinning device are arranged in this order along the conveying direction of the long sheet, and the melt blow spinning device, the long sheet reversing mechanism and the electrospinning device are long in the reverse order. The first fiber layer is formed on one side of the long sheet by the melt blow spinning device, and then continuously on the one side of the long sheet by the electrospinning device. The second fiber layer can be formed on the surface of the long sheet by the electrospinning apparatus, and then the melt blow spinning apparatus. It continuously becomes possible to form a first fibrous layer on one surface of a long sheet. For this reason, as in the case of the separator manufacturing apparatus 1 according to Embodiment 1, it is possible to mass-produce separators having desired properties with high productivity.

  Moreover, according to the separator manufacturing apparatus 3 which concerns on Embodiment 3, it has an electrospinning apparatus which deposits a 2nd fiber from the downward direction using an upward nozzle, and forms a 2nd fiber layer in the one side of a long sheet. As in the case of the separator manufacturing apparatus 1 according to Embodiment 1, the droplet phenomenon as seen in the separator manufacturing apparatus using the downward nozzle is not generated.

  As a result, the separator manufacturing apparatus 3 according to the third embodiment can produce a high-quality separator having desired properties without causing a droplet phenomenon, as in the case of the separator manufacturing apparatus 1 according to the first embodiment. It becomes a separator manufacturing apparatus that can be mass-produced with.

  The separator manufacturing apparatus 3 according to the third embodiment has the same configuration as that of the separator manufacturing apparatus 1 according to the first embodiment except for the number of melt blow spinning apparatuses and the number of electrospinning apparatuses. Among the effects of the separator manufacturing apparatus 1 according to the above, the corresponding effects are provided as they are.

[Modification 1]
In above-mentioned Embodiments 1-3, although the separator manufacturing apparatus of this invention was demonstrated taking the case where the separator which has a structure which does not contain the elongate sheet | seat 110 as an example, this invention is not limited to this. . FIG. 11 is a perspective view of the separator 100b according to the first modification. For example, as shown in FIG. 11, the separator manufacturing apparatus of the present invention can also be used when manufacturing a separator having a structure including a long sheet 110.

[Embodiment 4]
FIG. 12 is a front view of the separator manufacturing apparatus 4 according to the fourth embodiment. FIG. 13 is a diagram illustrating a configuration of the separator 100c according to the fourth embodiment.

  As shown in FIG. 12, the separator manufacturing apparatus 4 according to the fourth embodiment includes a long sheet conveying apparatus 10 that conveys the long sheet 110, a melt blow spinning apparatus 20 that forms the first fiber layer 122, and a long sheet. 110 and the first fiber 122, the first fiber layer conveying device 50 that conveys the first fiber layer 122 separated by the sheet separating device 60, and the first fiber layer 122 that is conveyed. And an electrospinning apparatus 40 for forming a second fiber layer 130 on one surface of the first fiber layer 122 by depositing second fibers from below using an upward nozzle on one surface. As shown in FIG. 13, the separator manufacturing apparatus 4 according to Embodiment 4 is for manufacturing a separator 100c (see FIG. 13) in which a first fiber layer 122 and a second fiber layer 130 are laminated in this order. It is a separator manufacturing apparatus.

  The long sheet conveying apparatus 10 includes a feeding roller 11, a tension roller 13, a driving roller 14, and a take-up roller 12a. The sheet separating device 60 includes separation rollers 62 and 64 and separates the long sheet 110 and the first fiber layer 122. The long sheet 110 is separated from the first fiber layer 122 by the sheet separating apparatus 60 after the first fiber layer 122 is formed on the long sheet 110 by the melt blow spinning apparatus 20. The separated long sheet 110 is taken up by the take-up roller 12a.

  The 1st fiber layer conveyance apparatus 50 consists of a 1st fiber layer conveyance mechanism. The winding roller 53, the plurality of driving rollers 51, and the auxiliary roller 52 constitute a first fiber layer transport mechanism (not shown) that transports the first fiber layer 122. The separator 100 c having a structure in which the first fiber layer 122 and the second fiber layer 130 are laminated is wound around the winding roller 53.

  According to the separator manufacturing apparatus 4 according to the fourth embodiment, the second fiber layer 130 can be formed on one surface of the first fiber layer 122 separated from the long sheet 110 by the sheet separating apparatus 60. As in the case of the separator manufacturing apparatus 1 according to 1, the first fiber layer and the second fiber layer are laminated, and a separator having desired properties can be mass-produced with high productivity. Become.

  Moreover, according to the separator manufacturing apparatus 4 which concerns on Embodiment 4, it has an electrospinning apparatus which deposits a 2nd fiber from the downward direction using an upward nozzle, and forms a 2nd fiber layer in the one surface of a 1st fiber layer. Therefore, as in the case of the separator manufacturing apparatus 1 according to the first embodiment, the droplet phenomenon as seen in the separator manufacturing apparatus using the downward nozzle does not occur.

  As a result, as in the case of the separator manufacturing apparatus 1 according to the first embodiment, the separator manufacturing apparatus 4 according to the fourth embodiment can produce a high-quality separator having desired properties without causing a droplet phenomenon. It becomes a separator manufacturing apparatus that can be mass-produced with.

[Embodiment 5]
FIG. 14 is a front view of the separator manufacturing apparatus 5 according to the fifth embodiment. FIG. 15 is a diagram illustrating a configuration of a separator 100d according to the fifth embodiment.

  The separator manufacturing apparatus 5 according to the fifth embodiment has basically the same configuration as the separator manufacturing apparatus 4 according to the fourth embodiment, but the configuration of the long sheet conveying apparatus is the same as that of the separator manufacturing apparatus 4 according to the fourth embodiment. Different from the case. That is, in the separator manufacturing apparatus 5 according to the fifth embodiment, the long sheet conveying apparatus 10a rotates the endless belt-shaped long sheet 17 in one direction by the feed rollers 11a and 11b as shown in FIG. In this state, the first fiber layer 122 is formed on the long sheet 17 by the melt blow spinning device 20. The formed first fiber layer 122 is transported to the subsequent stage by the first fiber layer transport device 50. In the fifth embodiment, of the feed rollers 11a and 11b, the feed roller 11b also serves as the sheet separating device 60.

  As shown in FIG. 15, the separator manufacturing apparatus 5 according to Embodiment 5 is a separator manufacturing apparatus for manufacturing a separator 100d in which a first fiber layer 122 and a second fiber layer 130 are laminated in this order.

  The 1st fiber layer conveyance apparatus 50 consists of a 1st fiber layer conveyance mechanism. The winding roller 53, the plurality of driving rollers 51, and the auxiliary roller 52 constitute a first fiber layer transport mechanism (not shown) that transports the first fiber layer 122. The first fiber layer transport device 50 transports the first fiber layer 122. The separator 100 d having a structure in which the first fiber layer 122 and the second fiber layer 130 are laminated is wound around the winding roller 53.

  Thus, the separator manufacturing apparatus 5 according to the fifth embodiment is different from the separator manufacturing apparatus 4 according to the fourth embodiment in the configuration of the long sheet conveying apparatus, but is separated from the long sheet 17 by the sheet separating apparatus 11b. Since the second fiber layer 130 can be formed on one surface of the first fiber layer 122, the first fiber layer and the second fiber layer are formed in the same manner as in the separator manufacturing apparatus 4 according to the fourth embodiment. A separator having a laminated structure and having desired properties can be mass-produced with high productivity.

  Moreover, according to the separator manufacturing apparatus 5 which concerns on Embodiment 5, it has an electrospinning apparatus which deposits a 2nd fiber from the downward direction using an upward nozzle, and forms a 2nd fiber layer in the one surface of a 1st fiber layer. Therefore, as in the case of the separator manufacturing apparatus 4 according to the fourth embodiment, the droplet phenomenon as seen in the separator manufacturing apparatus using the downward nozzle does not occur.

  As a result, as in the case of the separator manufacturing apparatus 4 according to the fourth embodiment, the separator manufacturing apparatus 5 according to the fifth embodiment can produce a high-quality separator having desired properties without causing a droplet phenomenon. It becomes a separator manufacturing apparatus that can be mass-produced with.

  Since the separator manufacturing apparatus 5 according to the fifth embodiment has the same configuration as that of the separator manufacturing apparatus 4 according to the fourth embodiment except for the configuration of the long sheet conveying apparatus, the separator manufacturing apparatus according to the fourth embodiment. Among the effects that the device 4 has, the corresponding effects are maintained as they are.

[Embodiment 6]
FIG. 16 is a front view of the separator manufacturing apparatus 6 according to the sixth embodiment. FIG. 17 is a diagram illustrating a configuration of the separator 100e according to the sixth embodiment.

  The separator manufacturing apparatus 6 according to the sixth embodiment has basically the same configuration as the separator manufacturing apparatus 4 according to the fourth embodiment, but the configuration of the first fiber layer conveying apparatus and the configuration of the electrospinning apparatus are the fourth embodiment. This is different from the case of the separator manufacturing apparatus 4 according to the above. That is, in the separator manufacturing apparatus 6 according to Embodiment 6, as shown in FIG. 16, the direction of one surface and the other surface of the first fiber layer 122 are in the middle of the first fiber layer 122 being conveyed. The first fiber layer reversing mechanism 54 for reversing the first fiber layer 122 so as to be opposite to each other, and the electrospinning device 40b disposed at the subsequent stage of the first fiber layer reversing mechanism 54 are further provided. As shown in FIG. 17, the separator manufacturing apparatus 6 according to Embodiment 6 manufactures a separator 100e in which the second fiber layer 130, the first fiber layer 122, and the second fiber layer 130 are laminated in this order. It is a separator manufacturing apparatus for.

The first fiber layer transport device 50 further includes a first fiber layer reversing mechanism 54 and transports the first fiber layer 122.
The first fiber layer reversing mechanism 54 reverses the first fiber layer 122 so that the direction of one surface of the first fiber layer 122 is opposite to the direction of the other surface. In FIG. 16, the first reversing roller 55 a and the second reversing roller 55 b constitute the first fiber layer reversing mechanism 54.

  The electrospinning apparatus 40b is disposed at the rear stage of the first fiber layer reversing mechanism 54, and deposits the second fibers from below using an upward nozzle to form the second fiber layer 130 on the other surface of the first fiber layer 122. . The electrospinning device 40b may have a configuration similar to that of the electrospinning device 40, or may have a different configuration.

  As described above, the separator manufacturing apparatus 6 according to the sixth embodiment is different from the separator manufacturing apparatus 4 according to the fourth embodiment in the configuration of the first fiber layer conveying apparatus and the electrospinning apparatus. Since the 2nd fiber layer 130 can be formed in the one side and other side of the 1st fiber layer 122 isolate | separated from the elongate sheet | seat 110, similarly to the case of the separator manufacturing apparatus 4 which concerns on Embodiment 4, it is 1st. A separator having a structure in which a fiber layer and a second fiber layer are laminated and having desired properties can be mass-produced with high productivity.

  Further, according to the separator manufacturing apparatus 6 according to the sixth embodiment, the second fiber is deposited from below using the upward nozzle to form the second fiber layer 130 on the one surface and the other surface of the first fiber layer 122. Since the spinning devices 40 and 40b are provided, as in the case of the separator manufacturing device 4 according to the fourth embodiment, the droplet phenomenon as seen in the separator manufacturing device using the downward nozzle is not generated.

  As a result, as in the case of the separator manufacturing apparatus 4 according to the fourth embodiment, the separator manufacturing apparatus 6 according to the sixth embodiment can produce a high-quality separator having desired properties without causing a droplet phenomenon. It becomes a separator manufacturing apparatus that can be mass-produced with.

  In addition, since the separator manufacturing apparatus 6 according to Embodiment 6 has the same configuration as that of the separator manufacturing apparatus 4 according to Embodiment 4 except for the configuration of the first fiber layer transport device and the configuration of the electrospinning device, The effect which is applicable among the effects which the separator manufacturing apparatus 4 which concerns on Embodiment 4 has is left as it is.

[Embodiment 7]
FIG. 18 is a front view of the separator manufacturing apparatus 7 according to the seventh embodiment. FIG. 19 is a diagram illustrating a configuration of a separator 100f according to the seventh embodiment. In addition, in FIG. 19, the number in the parenthesis described after each code | symbol shows the order which forms each fiber layer.

  The separator manufacturing apparatus 7 according to the seventh embodiment has basically the same configuration as the separator manufacturing apparatus 4 according to the fourth embodiment, but the number of melt blow spinning devices and the number of electrospinning devices are the separators according to the fourth embodiment. Different from the case of the manufacturing apparatus 4. That is, the separator manufacturing apparatus 7 according to Embodiment 7 includes three melt blow spinning apparatuses 20, 20a, 20b and three electrospinning apparatuses 40, 40a, 40b as shown in FIG. As shown in FIG. 19, the separator manufacturing apparatus 7 according to the seventh embodiment includes a first fiber layer 122, a second fiber layer 130, a first fiber layer 120, a second fiber layer 130, and a first fiber layer. 120 is a separator manufacturing apparatus for manufacturing the separator 100f in which the second fiber layer 130 is stacked in this order.

The separator manufacturing apparatus 7 according to Embodiment 7 corresponds to the structure of the separator shown in FIG. 19, and includes a melt blow spinning apparatus 20, an electro spinning apparatus 40, a melt blow spinning apparatus 20a, an electro spinning apparatus 40a, and a melt blow spinning apparatus. 20b and the electrospinning device 40b are arranged in this order along the conveying direction of the long sheet.
Further, except between the first melt blow spinning device 20 and the electro spinning device 40, between the adjacent electro spinning device 40 and the melt blow spinning device 20a, between the melt blow spinning device 20a and the electro spinning device 40a, and electro spinning. First fiber layer reversing mechanisms 54a, 54b, 54c, and 54d are disposed between the apparatus 40a and the melt blow spinning apparatus 20b, and between the melt blow spinning apparatus 20b and the electrospinning apparatus 40a, respectively.

  Here, the “first fiber layer reversing mechanism” means that the first fiber layer 120 and the second fiber layer 130 are laminated on the first fiber layer 122 instead of inverting only the first fiber layer 122. Including those that reverse the image.

  As described above, the separator manufacturing apparatus 7 according to the seventh embodiment differs from the separator manufacturing apparatus 4 according to the fourth embodiment in the number of melt blow spinning apparatuses and the number of electrospinning apparatuses. Since the second fiber layer can be formed on one surface of the separated first fiber layer, the first fiber layer and the second fiber layer are laminated as in the case of the separator manufacturing apparatus 4 according to the fourth embodiment. It is possible to mass-produce separators having a desired structure and desired properties with high productivity.

  Moreover, according to the separator manufacturing apparatus 7 which concerns on Embodiment 7, the 2nd fiber is deposited from the downward direction using an upward nozzle, and the electrospinning apparatus 40a, 40a which forms a 2nd fiber layer in the one surface of a 1st fiber layer 40b, as in the case of the separator manufacturing apparatus 4 according to the fourth embodiment, the droplet phenomenon as seen in the separator manufacturing apparatus using the downward nozzle is not generated.

  As a result, the separator manufacturing apparatus 7 according to the seventh embodiment can produce a high-quality separator having desired properties without causing a droplet phenomenon, as in the case of the separator manufacturing apparatus 4 according to the fourth embodiment. It becomes a separator manufacturing apparatus that can be mass-produced with.

  The separator manufacturing apparatus 7 according to the seventh embodiment has the same configuration as that of the separator manufacturing apparatus 4 according to the fourth embodiment except for the number of melt blow spinning apparatuses and the number of electrospinning apparatuses. Among the effects of the separator manufacturing apparatus 4 according to the above, the corresponding effects are directly provided.

[Modification 2]
FIG. 20 is a diagram illustrating a configuration of a separator 100g according to the second modification. In FIG. 20, the numbers in parentheses after each symbol indicate the order in which the respective fiber layers are formed.

  In the above-described seventh embodiment, except for between the melt blow spinning device 20 and the electro spinning device 40, the first is between the adjacent electro spinning device and the melt blow spinning device and between the melt blow spinning device and the electro spinning device. Although the separator manufacturing apparatus of the present invention has been described by taking the separator manufacturing apparatus in which the fiber layer reversing mechanism is disposed as an example, the present invention is not limited to this. Although not shown in the separator manufacturing apparatus according to this modification, the present invention can also be applied to a separator manufacturing apparatus in which the first fiber layer reversing mechanism is installed only between the electrospinning apparatus and the melt blow spinning apparatus. .

  Even with such a configuration, the second fiber layer and the first fiber layer are laminated in this order on one surface of the first fiber layer, and further, the second fiber layer and the second fiber layer on the other surface of the first fiber layer. It is possible to manufacture a separator having a structure in which the first fiber layer is laminated in this order.

[Embodiment 8]
FIG. 21 is a view for explaining the separator manufacturing apparatus 8 according to the eighth embodiment.
The separator manufacturing apparatus 8 according to the eighth embodiment has basically the same configuration as the separator manufacturing apparatus 1 according to the first embodiment. However, the separator manufacturing apparatus 8 according to the first embodiment further includes a heating device 80. Is different. That is, the separator manufacturing apparatus 8 according to the eighth embodiment further includes a heating device 80 in front of the winding roller 12 as shown in FIG.

  The heating device 80 is disposed in front of the winding roller 12 and heats the long sheet 110 in which the first fiber layer and the second fiber layer are laminated. Although heating temperature changes with kinds of the elongate sheet | seat 110, the 1st fiber 120, and the 2nd fiber 130, it can set to the predetermined temperature which exists in the range of 50 to 300 degreeC, for example.

  As described above, the separator manufacturing apparatus 8 according to the eighth embodiment is different from the separator manufacturing apparatus 1 according to the first embodiment in that the heating apparatus 80 is further provided, but the melt blow spinning apparatus, the long sheet reversing mechanism, and the electrospinning apparatus. Are arranged in this order along the conveying direction of the long sheet, and similarly to the separator manufacturing apparatus 1 according to the first embodiment, the first fiber layer is formed on one surface of the long sheet by the melt blow spinning apparatus. Then, the second fiber layer can be continuously formed on one side of the long sheet by the electrospinning apparatus, and it is possible to mass-produce separators having desired properties with high productivity. Become.

  Moreover, according to the separator manufacturing apparatus 8 which concerns on Embodiment 8, it is equipped with the electrospinning apparatus which deposits a 2nd fiber from the downward direction using an upward nozzle, and forms a 2nd fiber layer in one surface of a long sheet. As in the case of the separator manufacturing apparatus 1 according to Embodiment 1, the droplet phenomenon as seen in the separator manufacturing apparatus using the downward nozzle is not generated.

  As a result, as in the case of the separator manufacturing apparatus 1 according to the first embodiment, the separator manufacturing apparatus 8 according to the eighth embodiment can produce a high-quality separator having desired properties without causing a droplet phenomenon. It becomes a separator manufacturing apparatus that can be mass-produced with.

  In addition, according to the separator manufacturing apparatus 8 according to the eighth embodiment, since the heating device 80 is provided, it is possible to completely evaporate the solvent that may remain in the first fiber layer and the second fiber layer. High quality separators can be produced in very small quantities.

  The separator manufacturing apparatus 8 according to the eighth embodiment has the same configuration as that of the separator manufacturing apparatus 1 according to the first embodiment except that the heating apparatus 80 is further provided, and thus the separator manufacturing apparatus according to the first embodiment. Among the effects that the apparatus 1 has, the corresponding effects are maintained as they are.

  As mentioned above, although this invention was demonstrated based on said embodiment, this invention is not limited to said embodiment. The present invention can be implemented in various modes without departing from the spirit thereof, and for example, the following modifications are possible.

(1) In each of the above embodiments, the separator manufacturing apparatus of the present invention is described using the electrospinning apparatus 40 in which the positive electrode of the power supply device 49 is connected to the collector 44 and the negative electrode of the power supply device 49 is connected to the nozzle unit 42. However, the present invention is not limited to this. For example, the present invention can also be applied to a separator manufacturing apparatus including an electrospinning apparatus in which the positive electrode of the power supply device is connected to the nozzle unit 42 and the negative electrode of the power supply device is connected to the collector 44.

(2) In the above embodiment, the present invention has been described using a separator manufacturing apparatus in which one nozzle unit is disposed in one electrospinning apparatus, but the present invention is not limited to this. For example, the present invention can be applied to a separator manufacturing apparatus in which two nozzle units are disposed in one electrospinning apparatus 40, or the present invention is applied to a separator manufacturing apparatus in which two or more nozzle units are disposed. It can also be applied.

  In this case, the nozzle arrangement pitch can be made the same for all nozzle units, or the nozzle arrangement pitch can be made different for each nozzle unit. Moreover, the height position of a nozzle unit can also be made the same by all the nozzle units, and the height position of a nozzle unit can also be varied by each nozzle unit.

(3) In the separator manufacturing apparatus of this invention, you may provide the mechanism which reciprocates a nozzle unit with a predetermined reciprocation period along the width direction of a long sheet. By performing electrospinning while reciprocating the nozzle unit at a predetermined reciprocating period using the mechanism, the amount of polymer fibers deposited along the width direction of the long sheet can be made uniform. In this case, the reciprocating motion cycle and the reciprocating distance of the nozzle unit may be controlled independently for each electrospinning apparatus or for each nozzle unit. By setting it as such a structure, all the nozzle units can also be reciprocated with the same period, and each nozzle unit can be reciprocated with a different period. In addition, the reciprocating distance of the reciprocating motion can be made the same for all the nozzle units, and the reciprocating distance of the reciprocating motion can be made different for each nozzle unit.

(4) In the above embodiment, the present invention has been described using the melt blow spinning apparatus in which the nozzles are arranged in a line along the width direction of the long sheet, but the present invention is not limited to this. For example, the present invention can be applied to a melt blow spinning apparatus in which nozzles are two-dimensionally arranged.

(5) In the first embodiment, the present invention has been described using the separator manufacturing apparatus that conveys the long sheet from the melt blow spinning apparatus 20 to the electrospinning apparatus 40 disposed above. It is not limited to. For example, the present invention can also be applied to a separator manufacturing apparatus that conveys a long sheet from the electrospinning apparatus 40 toward the melt blow spinning apparatus 20 disposed below.

1, 2, 3, 4, 5, 6, 7, 8 ... separator manufacturing apparatus, 10 ... long sheet conveying apparatus 11 ... feeding roller, 11a, 11b ... feeding roller, 12, 12a ... winding roller, 13 ... tension Roller, 14 ... Driving roller, 15, 15a, 15b, 15c, 15d ... Long sheet reversing mechanism, 16a, 16c, 16e ... First reversing roller, 16b, 16d, 16f ... Second reversing roller, 17 ... Endless belt shape Long sheet, 18 ... auxiliary roller, 19 ... transport mechanism, 20, 20a, 20b ... melt blow spinning device, 21 ... (melt blow spinning device) housing, 22 ... (melt blow spinning device) nozzle unit, 23 ... (melt blow) Nozzle of spinning device, 24 ... High temperature air supply mechanism, 25 ... Suction pump, 26 ... Heater, 27 ... Air current suction Structure: 28 ... Reticulated member, 30 ... High-temperature air flow suction part, 31 ... High-temperature air flow discharge device, 40, 40a, 40b ... Electrospinning device, 41 ... Housing (for electrospinning device), 42 ... (for electrospinning device) Nozzle unit, 43 ... (of electrospinning apparatus), 44 ... Collector, 45 ... Insulating member, 46 ... Auxiliary belt device, 47 ... Auxiliary belt, 48 ... Auxiliary belt roller, 49 ... Power supply device, 50 ... First fiber Layer transport device, 51 ... driving roller, 52 ... auxiliary roller, 53 ... winding roller, 54, 54a, 54b, 54c, 54d ... first fiber layer reversing mechanism, 55a, 55c, 55e, 55g ... first reversing roller, 55b, 55d, 55f, 55h ... second reversing roller, 60 ... sheet separating device, 62 ... first fiber layer feeding roller, 64 ... auxiliary roller, 80 ... heating device, 1 0, 100a, 100b, 100c, 100d, 100e, 100f, 100g ... separator, 110 ... long sheet, 120, 122, 124 ... first fiber layer, 130 ... second fiber layer, 140 ... laminate roll, A1 ... 1st direction, A2 ... 2nd direction, A3 ... 3rd direction

Claims (9)

A first fiber layer comprising a first fiber having a predetermined average diameter; and a second fiber layer comprising a second fiber having an average diameter smaller than the first fiber, wherein at least the first fiber layer and the first fiber layer A separator manufacturing apparatus for manufacturing a separator having a structure in which two fiber layers are laminated,
A conveyance mechanism that conveys the long sheet, and a length that reverses the long sheet so that the direction of one side of the long sheet is opposite to the direction of the other side while the long sheet is being conveyed A long sheet conveying device comprising a long sheet reversing mechanism;
A melt blow spinning device for depositing the first fibers from above using a downward nozzle to form a first fiber layer on one surface of the long sheet;
An electrospinning apparatus that deposits the second fibers from below using an upward nozzle to form a second fiber layer on one surface of the long sheet;
Separator manufacturing, characterized in that the melt blow spinning device, the long sheet reversing mechanism, and the electrospinning device are arranged along the conveying direction of the long sheet in this order or in the reverse order. apparatus. In the separator manufacturing apparatus according to claim 1,
The melt blow spinning device, the long sheet reversing mechanism, and the electrospinning device are arranged in this order along the conveying direction of the long sheet,
The electrospinning device is disposed above or below the melt blow spinning device,
The long sheet reversing mechanism reverses the long sheet from the melt blow spinning apparatus in accordance with the height position of the electrospinning apparatus. In the separator manufacturing apparatus according to claim 1,
The melt blow spinning device, the long sheet reversing mechanism, and the electrospinning device are arranged along the conveying direction of the long sheet in the reverse order.
The melt blow spinning device is disposed above or below the electrospinning device,
The long sheet reversing mechanism reverses the long sheet from the electrospinning apparatus in accordance with a height position of the melt blow spinning apparatus. In the separator manufacturing apparatus in any one of Claims 1-3,
The separator is a separator having a structure in which the first fiber layers and the second fiber layers are alternately laminated,
The melt blow spinning device and the electrospinning device are arranged along the conveying direction of the long sheet, corresponding to the structure of the separator,
The separator manufacturing apparatus, wherein the long sheet reversing mechanism is disposed between the melt blow spinning apparatus and the electrospinning apparatus that are adjacent to each other. In the separator manufacturing apparatus in any one of Claims 1-4,
The separator manufacturing apparatus comprising a laminate composed of the first fiber layer and the second fiber layer. In the separator manufacturing apparatus in any one of Claims 1-5,
The separator manufacturing apparatus characterized by comprising the base material layer which comprises the said elongate sheet, and the laminated body comprised from the said 1st fiber layer and the said 2nd fiber layer. A first fiber layer comprising a first fiber having a predetermined average diameter; and a second fiber layer comprising a second fiber having an average diameter smaller than the first fiber, wherein at least the first fiber layer and the first fiber layer A separator manufacturing apparatus for manufacturing a separator having a structure in which two fiber layers are laminated,
A long sheet conveying device for conveying a long sheet;
A melt blow spinning apparatus for depositing the first fibers on one side of the long sheet from above using a downward nozzle to form a first fiber layer on one side of the long sheet;
A sheet separating device that is disposed downstream of the melt blow spinning device and separates the long sheet and the first fibers;
A first fiber layer transport device that is disposed downstream of the sheet separator and transports the first fiber layer separated by the sheet separator;
An electrospinning apparatus that deposits the second fiber from below using an upward nozzle on one surface of the first fiber layer to be conveyed to form a second fiber layer on one surface of the first fiber layer; The separator manufacturing apparatus characterized by the above-mentioned. In the separator manufacturing apparatus according to claim 7,
The separator is a separator having a structure in which the second fiber layer is formed on one side and the other side of the first fiber layer,
The first fiber layer is disposed at a subsequent stage of the electrospinning apparatus, and the first fiber layer is disposed so that the direction of one surface of the first fiber layer is opposite to the direction of the other surface while the first fiber layer is being conveyed. A first fiber layer reversing mechanism for reversing;
A second electrospinning apparatus disposed downstream of the first fiber layer reversing mechanism and depositing the second fibers from below using an upward nozzle to form a second fiber layer on the other surface of the first fiber layer; The separator manufacturing apparatus further comprising: In the separator manufacturing apparatus according to claim 7,
The separator is a separator having a structure in which the second fiber layer and the first fiber layer are laminated in this order on one surface of the first fiber layer,
The first fiber layer is disposed at a subsequent stage of the electrospinning apparatus, and the first fiber layer is disposed so that the direction of one surface of the first fiber layer is opposite to the direction of the other surface while the first fiber layer is being conveyed. A first fiber layer reversing mechanism for reversing;
The first fiber layer is disposed on the subsequent stage of the first fiber layer reversing mechanism, and the first fiber layer is formed on the surface of the first fiber layer on which the second fiber layer is formed by depositing the first fiber from above using a downward nozzle. A separator manufacturing apparatus, further comprising a melt blow spinning device to be formed.

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