JP2019076870A - Sorting apparatus and sheet manufacturing apparatus - Google Patents

Abstract

To provide a sorting apparatus capable of sorting first fibers with deposits of foreign matters from second fibers with foreign matters deposited in a smaller amount than the first fibers.SOLUTION: A sorting apparatus is characterized in that a fibrillated material containing first fibers with deposits of foreign matters and second fibers with the foreign matters deposited in a smaller amount than the first fibers comprises a charging part that charges and a sorting part that sorts the first fiber from the second fibers by utilizing a potential difference between the first fibers charged by the charging part and the second fibers. The charging part preferably charges the first fibers and the second fibers so as to show mutually different polarities.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a sorting apparatus and a sheet manufacturing apparatus.

  In recent years, awareness of the environment has been increased, and it has been required not only to reduce the amount of paper (recording medium) used at work but also to perform paper reproduction at work.

  Patent Document 1 discloses a sheet manufacturing apparatus which manufactures a new sheet using a sheet such as waste paper (used sheet) as a raw material. In the sheet manufacturing apparatus described in Patent Document 1, when the defibrating unit performs disintegration processing, ink, toner, and the like attached to the disintegrated material (fiber) are separated from the fibers.

Patent No. 6127882 gazette

  However, in the sheet manufacturing apparatus described in Patent Document 1, it is not possible to separate the fiber to which the ink is attached and the fiber to which the ink is not attached. Therefore, the sheet in which the fiber to which the ink is attached is mixed May be manufactured. As a result, black spots are generated by the fiber lumps derived from the printed portion of the sheet that has become the raw material, and the quality is reduced. Further, there is a problem that the whiteness of the sheet is lowered by the mixing of the fibers to which the ink is attached.

  One of the objects according to some aspects of the present invention is a sorting apparatus capable of sorting a first fiber to which foreign matter is attached and a second fiber to which the amount of foreign matter attached is smaller than that of the first fiber. And providing a sheet manufacturing apparatus.

  The present invention has been made to solve at least a part of the above-mentioned problems, and can be realized as the following aspects.

The sorting apparatus according to the present invention is a charge imparting part that applies a charge to a defibrated material containing a first fiber to which foreign matter is attached and a second fiber to which the adhesion amount of the foreign matter is smaller than that of the first fiber. When,
A sorting unit for sorting the first fiber and the second fiber using a potential difference between the first fiber and the second fiber after the charge application unit applies the charge; It is characterized by having.

  According to such a sorting apparatus of the present invention, it is possible to properly sort the first fiber and the second fiber. Then, for example, by manufacturing a sheet using the separated second fibers, a sheet with good quality can be manufactured.

  In the sorting apparatus of the present invention, it is preferable that the charge applying unit charges the first fiber and the second fiber to different polarities.

  Thereby, the first fiber and the second fiber can be easily and appropriately separated as compared with the case where the first fiber and the second fiber are charged to the same polarity.

  In the sorting apparatus of the present invention, it is preferable that the charge applying unit negatively charges the first fiber and positively charges the second fiber by friction.

  Thereby, the first fiber and the second fiber can be easily and appropriately separated as compared with the case where the first fiber and the second fiber are charged to the same polarity.

  In the sorting apparatus of the present invention, it is preferable that the charge applying portion has a first drum portion formed of a net, which rotates while housing the defibrated material therein.

  Thereby, the first fiber and the second fiber are respectively charged by the friction between the first fiber, the second fiber, and the first drum portion. In addition, the first drum portion becomes a sieve, and the first fibers and the second fibers of appropriate sizes are discharged from the mesh of the first drum portion.

  In the sorting apparatus according to the present invention, the sorting section has a second drum section which is rotated around the outer periphery of the first drum section, charged to the opposite polarity to the first fibers, and is made of a net. Is preferred.

  As a result, the first fiber is adsorbed to the second drum portion by electrostatic force, and the second fiber is discharged from the mesh of the second drum portion without being adsorbed to the second drum portion. The first and second fibers are separated.

  In the sorting apparatus according to the present invention, the sorting unit is provided so as to be movable downward in the vertical direction of the first drum unit, charged with a polarity opposite to that of the first fiber, and has a belt formed of a net. Is preferred.

  Thereby, the first fiber is electrostatically attracted to the belt, and the second fiber is discharged from the mesh of the belt without being adsorbed to the belt, whereby the first fiber and the second fiber Are separated.

  In the sorting apparatus of the present invention, it is preferable that the order in the charge train of the constituent material of the first drum portion be between the foreign matter and the paper.

  Thereby, the first fiber and the second fiber can be charged to different polarities by the friction between the first fiber, the second fiber, and the first drum portion.

In the sorting apparatus of the present invention, the sorting unit preferably has a recovery mechanism for recovering the first fiber.
Thereby, the first fiber can be easily discarded or reused.

In the sorting apparatus of the present invention, preferably, the recovery mechanism has a member for collecting the first fibers, and a discharge part for discharging the collected first fibers.
Thereby, the first fiber can be recovered easily and properly.

In the sorting apparatus of the present invention, the recovery mechanism preferably includes a member that separates the first fibers from the mesh of the mesh, and a suction unit that sucks the separated first fibers.
Thereby, the first fiber can be recovered easily and properly.

  In the sorting apparatus of the present invention, the foreign matter preferably includes at least one of ink and toner.

  As a result, it is possible to separate the first fiber to which at least one of the ink and the toner adheres and the second fiber whose adhesion amount is smaller than that of the first fiber.

The sheet manufacturing apparatus of the present invention is characterized by including the sorting apparatus of the present invention.
According to such a sheet manufacturing apparatus of the present invention, the first fibers and the second fibers can be properly separated. Thereby, a good quality sheet can be manufactured by manufacturing a sheet using the separated second fibers.

FIG. 1 is a schematic configuration view showing a first embodiment of the sheet manufacturing apparatus of the present invention. FIG. 2 is a view sequentially showing steps performed by the sheet manufacturing apparatus shown in FIG. FIG. 3 is a rear view (including a block diagram) schematically showing the sorting apparatus (first embodiment) of the sheet manufacturing apparatus shown in FIG. FIG. 4 is a side view schematically showing the sorting apparatus of the sheet manufacturing apparatus shown in FIG. 1 (first embodiment). FIG. 5 is a diagram for explaining the operation of the sorting device of the sheet manufacturing apparatus shown in FIG. FIG. 6 is a diagram for explaining the operation of the sorting device of the sheet manufacturing apparatus shown in FIG. FIG. 7 is a diagram for explaining the operation of the sorting device of the sheet manufacturing apparatus shown in FIG. FIG. 8 is a view for explaining the operation of the sorting device of the sheet manufacturing apparatus shown in FIG. FIG. 9 is a diagram for explaining the operation of the sorting device of the sheet manufacturing apparatus shown in FIG. FIG. 10 is a diagram for explaining the operation of the sorting device of the sheet manufacturing apparatus shown in FIG. FIG. 11 is a rear view (including a block diagram) schematically showing the sorting apparatus in the second embodiment of the sheet manufacturing apparatus of the present invention. FIG. 12 is a plan view schematically showing the sorting section of the sorting apparatus shown in FIG. FIG. 13 is a rear view (including a block diagram) schematically showing the sorting apparatus in the third embodiment of the sheet manufacturing apparatus of the present invention. FIG. 14 is a plan view schematically showing the sorting section of the sorting apparatus shown in FIG. FIG. 15 is a table showing experimental results.

  Hereinafter, the sorting apparatus and the sheet manufacturing apparatus of the present invention will be described in detail based on the embodiments shown in the attached drawings.

First Embodiment
FIG. 1 is a schematic configuration view showing a first embodiment of the sheet manufacturing apparatus of the present invention. FIG. 2 is a view sequentially showing steps performed by the sheet manufacturing apparatus shown in FIG. FIG. 3 is a rear view (including a block portion) schematically showing the sorting apparatus (first embodiment) of the sheet manufacturing apparatus shown in FIG. FIG. 4 is a side view schematically showing the sorting apparatus of the sheet manufacturing apparatus shown in FIG. 1 (first embodiment). 5 to 10 are views for explaining the operation of the sorting device of the sheet manufacturing apparatus shown in FIG.

  In addition, in FIG. 3 and FIGS. 5-10, the 1st fiber and 2nd fiber which were charged are respectively illustrated, and the 1st fiber is described with "-" with the polarity, and the 2nd fiber is described with "+" with the polarity. (The same applies to the corresponding figures of the other embodiments). Moreover, in FIGS. 5-10, only one 1st fiber is illustrated and demonstrated.

  Further, in the following, for convenience of explanation, the upper side of FIG. 1 is referred to as “upper” or “upper” and the lower side is referred to as “lower” or “lower”, the left side is “left” or “upstream side”, and the right side is “ It may be said "right" or "downstream". Further, the vertical direction in FIGS. 1 and 3 to 10 is the vertical direction (the same applies to the corresponding drawings in the other embodiments).

  The sheet manufacturing apparatus 100 shown in FIG. 1 includes a raw material supply unit 11, a crushing unit 12, a defibrating unit 13, a sorting apparatus 1 (sorting unit), a first web forming unit 15, and a sorting unit 16. The mixing unit 17, the loosening unit 18, the second web forming unit 19, the sheet forming unit 20, the cutting unit 21, and the stock unit 22 are provided. The sheet manufacturing apparatus 100 further includes a humidifying unit 231, a humidifying unit 232, a humidifying unit 233, a humidifying unit 234, a humidifying unit 235, and a humidifying unit 236. The operation of each part of the sheet manufacturing apparatus 100 is controlled by a control unit (not shown).

  As shown in FIG. 2, in the present embodiment, the sheet manufacturing method includes a raw material supply process, a crushing process, a fibrillation process, a separation process (sorting process), a first web forming process, and a dividing process. And a mixing step, a loosening step, a second web forming step, a sheet forming step, and a cutting step.

Hereinafter, the configuration of each part provided in the sheet manufacturing apparatus 100 will be described.
The raw material supply part 11 is a part which performs the raw material supply process (refer FIG. 2) which supplies the raw material M1 to the crushing part 12. As shown in FIG. The raw material M1 is, for example, in the form of a sheet made of a fiber-containing material containing fibers (cellulose fibers). Moreover, although the raw material M1 is used paper, ie, the used sheet, in this embodiment, it is not limited to this, It may be an unused sheet. In addition, what is necessary is just what makes cellulose (cellulose in a narrow sense) as a main component and makes a fibrous form with a compound as a cellulose fiber, and also contains hemicellulose and lignin besides cellulose (cellulose in a narrow sense) Good.

  The crushing part 12 is a part which performs the crushing process (refer FIG. 2) which crushes the raw material M1 supplied from the raw material supply part 11 in air (in air). The crushing unit 12 has a pair of crushing blades 121 and a chute (hopper) 122.

  The pair of coarse crushing blades 121 can rotate the raw material M1 between them in a direction opposite to each other to coarsen, that is, cut the raw material M1 into coarse pieces M2. The shape and size of the coarse fragments M2 are preferably suitable for the defibrating treatment in the defibrating unit 13. For example, the length of one side is preferably a small piece of 100 mm or less, and a small piece of 10 mm to 70 mm Is more preferred.

  The chute 122 is disposed below the pair of crushing blades 121 and has, for example, a funnel shape. Thus, the chute 122 can receive the coarse fragments M2 that have been crushed and dropped by the crushing blade 121.

  Further, above the chute 122, the humidifying unit 231 is disposed adjacent to the pair of coarse crushing blades 121. The humidifying unit 231 humidifies the coarse fragments M2 in the chute 122. The humidifying unit 231 has a filter (not shown) containing water, and by passing air through the filter, a vaporization type (or hot air vaporization type) that supplies humidified air with increased humidity to the coarse debris M2 It consists of a humidifier. By supplying the humidified air to the coarse fragments M2, the coarse fragments M2 can be prevented from adhering to the chute 122 etc. by static electricity.

  The chute 122 is connected to the defibrating unit 13 via a pipe (flow path) 241. The coarse fragments M2 collected in the chute 122 pass through the pipe 241 and are transported to the defibrating unit 13.

  The defibrating unit 13 is a portion that performs a defibrating step (see FIG. 2) of disaggregating the coarse fragments M2 (fiber-containing material including fibers) in air (in air), that is, in a dry manner. By the defibrating process in the defibrating unit 13, the defibrated product M3 can be generated from the coarse fragments M2. Here, "disintegrate" refers to loosening the coarse fragments M2 formed by binding a plurality of fibers into one fiber. And this disentangled thing becomes disentangled material M3. The shape of the defibrated material M3 is linear or band-like. In addition, the defibrated materials M3 may be present in a state of being entangled and in a lump, that is, in a state of forming a so-called "dama".

  For example, in the present embodiment, the defibrating unit 13 is an impeller mill having a rotor rotating at high speed and a liner located on the outer periphery of the rotor. The coarse fragments M2 flowing into the defibrating unit 13 are defibrated by being sandwiched between the rotor and the liner.

  In addition, the defibrating unit 13 can generate a flow (air flow) of air from the coarse crushing unit 12 toward the sorting device 1 by the rotation of the rotor. Thereby, the coarse fragments M2 can be sucked from the pipe 241 to the defibrating unit 13. In addition, after the defibration treatment, the defibrated material M3 can be sent out to the sorting device 1 through the pipe 242.

  The defibrating unit 13 also has a function of separating substances such as resin particles attached to the defibrated product M3 (coarse fragments M2), coloring materials such as ink and toner, and anti-smearing agents from fibers.

  The defibrating unit 13 is connected to the sorting device 1 via a pipe (flow path) 242. The defibrated material M 3 (fiber-containing material after fibrillation) passes through the pipe 242 and is conveyed to the sorting apparatus 1.

  In the middle of the pipe 242, a blower 261 is installed. The blower 261 is an air flow generating device that generates an air flow toward the sorting device 1. Thus, the delivery of the defibrated material M3 to the sorting device 1 is promoted.

  The sorting apparatus 1 is a part that performs a sorting step (sorting step) (see FIG. 2) of sorting (sorting) the defibrated material M3 according to the length of the fiber and the size (presence or absence) of the adhesion amount of foreign matter. In the sorting apparatus 1, the defibrated material M3 is sorted into a first sorted material M4-1 and a second sorted material M4-2 larger than the first sorted material M4-1. Further, in the sorting apparatus 1, the defibrated material M3, in particular, the first sorted material M4-1 has the first fiber to which the foreign matter has adhered, and the second fiber having a smaller amount of the foreign matter attached than the first fiber. Separated. Here, the first sorted material M4-1 has a size suitable for the subsequent manufacture of the sheet S (sheet material). Further, the second sorted product M4-2 includes, for example, those having insufficient defibration, and those in which the defibrated fibers are excessively aggregated.

  Although the sorting apparatus 1 will be described in detail later, briefly described, the sorting apparatus 1 is disposed on the outer peripheral portion of the drum portion 31 formed of a net and the drum portion 31 and is formed of a net And a drum portion 41. The defibrated material M3 flows into the drum unit 31, and in the drum unit 41, the defibrated material M3 is separated into the first sorted material M4-1 and the second sorted material M4-2, and the first sorted material M4 The -1 drops from the drum unit 31 and reaches the drum unit 41.

  On the other hand, the second sorted matter M4-2 is sent out to a pipe (flow path) 243 connected to the drum unit 31. The tube 243 is connected to the drum portion 31 and the tube 241 on the opposite side (downstream side). The second sorted product M4-2 which has passed through the pipe 243 joins the coarse fragments M2 in the pipe 241 and flows into the defibrating unit 13 together with the coarse fragments M2. As a result, the second sorted product M4-2 is returned to the defibrating unit 13 and disintegrated with the coarse fragments M2.

  Further, in the drum unit 41, the first sorted matter M4-1 (the second sorted matter M4-2 may be included) is the first fiber to which the foreign matter is attached and the foreign matter than the first fiber. The second fibers are separated into the second fibers with a small amount of adhesion, and the second fibers fall from the drum portion 41. Below, what remove | eliminated the 1st fiber from 1st sort thing M4-1 is also only called "1st sort thing M4-1."

  Further, the first sorted matter M 4-1 (second fiber) from the drum unit 41 is dispersed while falling in the air and falls, and the first web forming unit (separating unit) 15 located below the drum unit 41 Head for The 1st web formation part 15 is a portion which performs the 1st web formation process (refer to Drawing 2) which forms the 1st web M5 from the 1st sorted matter M4-1. The first web forming unit 15 has a mesh belt (separation belt) 151, three stretching rollers 152, and a suction unit (suction mechanism) 153.

  The mesh belt 151 is an endless belt made of a mesh, and the first sorted matter M4-1 is deposited. The mesh belt 151 is wound around three tension rollers 152. Then, by the rotational driving of the tension roller 152, the first sorted material M4-1 on the mesh belt 151 is conveyed to the downstream side.

  The first sorted matter M4-1 has a size equal to or larger than the opening of the mesh belt 151. Thereby, the passage of the mesh belt 151 is restricted, and therefore, the first sorted matter M4-1 can be deposited on the mesh belt 151. In addition, since the first sorted matter M4-1 is transported to the downstream side together with the mesh belt 151 while being deposited on the mesh belt 151, it is formed as a layered first web M5.

  Further, the color material CM is mixed with the first sorted product M4-1. The color material CM is smaller than the opening of the mesh belt 151. Thereby, the color material CM passes the mesh belt 151 and falls further downward.

  The suction unit 153 can suction air from below the mesh belt 151. As a result, the color material CM having passed through the mesh belt 151 can be suctioned together with air.

  In addition, the suction unit 153 is connected to the collection unit 27 via a pipe (flow passage) 244. The color material CM sucked by the suction unit 153 is collected by the collection unit 27.

  A pipe (flow path) 245 is further connected to the recovery unit 27. Further, a blower 262 is installed in the middle of the pipe 245. By the operation of the blower 262, a suction force can be generated in the suction unit 153. This promotes the formation of the first web M5 on the mesh belt 151. The first web M5 has the color material CM removed. Further, the color material CM passes through the pipe 244 by the operation of the blower 262 and reaches the recovery unit 27.

  The housing unit 10 is connected to the humidifying unit 232. The humidifying unit 232 is configured of a vaporization type humidifier similar to the humidifying unit 231. Thus, humidified air is supplied into the housing portion 10. The humidified air can humidify the first sorted matter M4-1, and therefore, can prevent the first sorted matter M4-1 from adhering to the inner wall of the housing portion 10 by electrostatic force.

  A humidifying unit 235 is disposed downstream of the sorting apparatus 1. The humidifying unit 235 is configured of an ultrasonic humidifier that sprays water. As a result, water can be supplied (humidified) to the first web M5, whereby the water content of the first web M5 is adjusted. By this adjustment, the adsorption of the first web M5 to the mesh belt 151 by electrostatic force can be suppressed. Thereby, the first web M5 is easily peeled off from the mesh belt 151 at a position where the mesh belt 151 is folded back by the stretching roller 152.

  The dividing unit 16 is disposed downstream of the humidifying unit 235. The subdivision unit 16 is a portion that performs a dividing step (see FIG. 2) of dividing the first web M5 separated from the mesh belt 151. The subdivided portion 16 has a propeller 161 rotatably supported and a housing portion 162 for housing the propeller 161. Then, the first web M5 can be divided by the first web M5 being caught in the rotating propeller 161. The divided first web M5 becomes a subdivided body M6. Further, the subdivided body M6 descends in the housing portion 162.

  The housing portion 162 is connected to the humidifying portion 233. The humidifying unit 233 is configured of a vaporization type humidifier similar to the humidifying unit 231. Thus, humidified air is supplied into the housing portion 162. The humidified air can also prevent the subdivision body M6 from adhering to the propeller 161 and the inner wall of the housing portion 162 by electrostatic force.

  The mixing unit 17 is disposed downstream of the subdivision unit 16. The mixing part 17 is a part which performs the mixing process (refer FIG. 2) which mixes the subdivision M6 and resin P1. The mixing unit 17 includes a resin supply unit 171, a pipe (flow passage) 172, and a blower 173.

  The pipe 172 connects the housing portion 162 of the subdivided portion 16 and the housing portion 182 of the loosening portion 18 and is a flow path through which the mixture M7 of the subdivided body M6 and the resin P1 passes.

  A resin supply unit 171 is connected in the middle of the pipe 172. The resin supply unit 171 has a screw feeder 174. By driving the screw feeder 174 to rotate, the resin P1 can be supplied to the tube 172 as powder or particles. The resin P1 supplied to the pipe 172 is mixed with the subdivision M6 to form a mixture M7.

  In addition, although resin P1 makes fibers bind in a later step, for example, a thermoplastic resin, a curable resin, etc. can be used, but it is preferable to use a thermoplastic resin. Examples of the thermoplastic resin include AS resin, ABS resin, polyethylene, polypropylene, polyolefin such as ethylene-vinyl acetate copolymer (EVA), modified polyolefin, acrylic resin such as polymethyl methacrylate, polyvinyl chloride, polystyrene, polyethylene Polyesters such as terephthalate and polybutylene terephthalate, nylon 6, nylon 46, nylon 66, nylon 610, nylon 612, nylon 11, nylon 12, nylon 6-12, nylon 6-66, etc. polyamide (nylon), polyphenylene ether, polyacetal , Polyether, polyphenylene oxide, polyetheretherketone, polycarbonate, polyphenylene sulfide, thermoplastic polyimide, polyetherimide, aromatic polyimide Various thermoplastic elastomers such as liquid crystal polymers such as esters, styrenes, polyolefins, polyvinyl chlorides, polyurethanes, polyesters, polyamides, polybutadienes, trans polyisoprenes, fluoro rubbers, chlorinated polyethylenes, etc. These may be used alone or in combination of two or more selected from these. Preferably, polyester or a resin containing this is used as the thermoplastic resin.

  In addition to the resin P1, for example, a colorant for coloring fibers, an aggregation inhibitor for suppressing aggregation of fibers and aggregation of the resin P1, and the like may be supplied from the resin supply unit 171. And the like may contain a flame retardant or the like for making it hard to burn. In addition, vegetable materials such as starch may be used.

  Moreover, below, these resin, a coloring agent, an aggregation inhibitor, a flame retardant, etc. are named generically, and it is also called a "binder." In the sheet manufacturing apparatus 100, as a "binder", as described later, a non-colored non-colored binder, a cyan Cyan binder, a magenta Magenta binder, a yellow Yellow binder and a white White binder The binders of each color are stored in separate tanks (not shown).

  Further, a blower 173 is installed in the middle of the pipe 172 on the downstream side of the resin supply unit 171. The blower 173 can generate an air flow toward the loosening unit 18. By this air flow, the subdivided body M6 and the resin P1 can be stirred in the pipe 172. Thus, the mixture M7 can flow into the loosening portion 18 in a state in which the subdivisions M6 and the resin P1 are uniformly dispersed. In addition, the subdivision M6 in the mixture M7 is loosened in the process of passing through the pipe 172 and becomes finer and fibrous.

  The loosening portion 18 is a portion of the mixture M7 which performs the step of loosening the entangled fibers (see FIG. 2). The loosening unit 18 includes a drum unit 181 and a housing unit 182 for housing the drum unit 181.

  The drum unit 181 is a screen formed in a cylindrical shape, and is a sieve that rotates about its central axis. The mixture M7 flows into the drum portion 181. Then, by rotating the drum unit 181, fibers and the like smaller than the mesh openings of the mixture M7 can pass through the drum unit 181. At that time, the mixture M7 will be loosened.

  Further, the mixture M 7 loosened by the drum unit 181 is dispersed in air and falls, and travels to the second web forming unit 19 located below the drum unit 181. The second web forming unit 19 is a portion that performs a second web forming step (see FIG. 2) of forming a second web M8 from the mixture M7. The second web forming unit 19 includes a mesh belt (separation belt) 191, a tension roller 192, and a suction unit (suction mechanism) 193.

  The mesh belt 191 is an endless belt, on which the mixture M7 is deposited. The mesh belt 191 is wound around four tension rollers 192. Then, the mixture M7 on the mesh belt 191 is conveyed to the downstream side by the rotational drive of the tension roller 192.

  Also, most of the mixture M7 on the mesh belt 191 has a size larger than the opening of the mesh belt 191. As a result, the mixture M7 is restricted from passing through the mesh belt 191, and can therefore be deposited on the mesh belt 191. Further, the mixture M <b> 7 is conveyed downstream together with the mesh belt 191 while being deposited on the mesh belt 191, and is thus formed as a layered second web M <b> 8.

  The suction unit 193 can suction air from below the mesh belt 191. This allows the mixture M7 to be sucked onto the mesh belt 191, thereby promoting the deposition of the mixture M7 on the mesh belt 191.

  A pipe (flow passage) 246 is connected to the suction portion 193. Further, a blower 263 is installed in the middle of the pipe 246. By the operation of the blower 263, suction can be generated at the suction portion 193.

  The housing portion 182 is connected to the humidifying portion 234. The humidifying unit 234 is configured of a vaporization type humidifier similar to the humidifying unit 231. Thus, humidified air is supplied into the housing portion 182. By the humidified air, the inside of the housing portion 182 can be humidified, and therefore, the mixture M7 can be suppressed from adhering to the inner wall of the housing portion 182 by electrostatic force.

  A humidifying unit 236 is disposed downstream of the loosening unit 18. The humidifying unit 236 is configured by an ultrasonic humidifier similar to the humidifying unit 235. Thus, the second web M8 can be supplied with water, and the water content of the second web M8 can be adjusted. By this adjustment, the adsorption of the second web M8 to the mesh belt 191 by electrostatic force can be suppressed. As a result, the second web M 8 is easily peeled off from the mesh belt 191 at the position where the mesh belt 191 is folded back by the tension roller 192.

  A sheet forming unit 20 is disposed downstream of the second web forming unit 19. The sheet forming unit 20 is a portion that performs a sheet forming process (see FIG. 2) of forming the sheet S from the second web M8. The sheet forming unit 20 includes a pressure unit 201 and a heating unit 202.

  The pressing unit 201 has a pair of calendar rollers 203, and can press the second web M8 without heating between them. This increases the density of the second web M8. Then, the second web M8 is conveyed toward the heating unit 202. One of the pair of calendar rollers 203 is a main driving roller driven by the operation of a motor (not shown), and the other is a driven roller.

  The heating unit 202 has a pair of heating rollers 204, and can heat and press the second web M8 between them. By this heating and pressing, in the second web M8, the resin P1 is melted, and the fibers are bonded to each other through the melted resin P1. Thus, the sheet S is formed. Then, the sheet S is conveyed toward the cutting unit 21. Note that one of the pair of heating rollers 204 is a main driving roller driven by the operation of a motor (not shown), and the other is a driven roller.

  The cutting unit 21 is disposed downstream of the sheet forming unit 20. The cutting unit 21 is a portion that performs a cutting process (see FIG. 2) for cutting the sheet S. The cutting unit 21 includes a first cutter 211 and a second cutter 212.

  The first cutter 211 cuts the sheet S in a direction intersecting the sheet S conveyance direction.

  The second cutter 212 cuts the sheet S in the direction parallel to the conveyance direction of the sheet S on the downstream side of the first cutter 211.

By cutting the first cutter 211 and the second cutter 212, a sheet S having a desired size can be obtained. Then, the sheet S is conveyed further downstream and accumulated in the stock unit 22.
The sheet manufacturing apparatus 100 has been briefly described above.

Next, the sorting apparatus 1 will be described.
As shown in FIG. 3 and FIG. 4, the sorting apparatus 1 includes a first fiber to which foreign matter is attached and a second fiber M2 having a smaller amount of foreign matter attached than the first fiber (FIG. 3) 1) using a potential difference between a first fiber and a second fiber after the charge application section 3 for applying electric charge and the first fiber and the second fiber after the electric charge application section 3 applies electric charge to the first fiber and the second fiber A separating unit 4 for separating it from the fibers, a housing unit 10 (see FIG. 1) for storing the charge applying unit 3 and the separating unit 4, and a voltage applying device 5 for applying a voltage to the drum unit 41 of the separating unit 4; Have.

  Here, "the amount of adhesion of foreign matter is smaller than that of the first fiber" means that the foreign matter is adhered and the adhesion amount is smaller than the adhered amount of the foreign matter of the first fiber, and the foreign matter is It also includes that it does not adhere.

  The foreign matter is not particularly limited, and examples thereof include ink, toner and the like, and in the present embodiment, at least one of ink and toner is included. For this reason, the order in the charge train is that the first fibers are located more negative than the second fibers.

  Further, in the present embodiment, the charge application unit 3 causes the first fiber and the second fiber to have different polarities different from each other by friction, that is, to charge the first fiber negatively and make the second fiber positive. To charge. In addition, the drum portion 41 of the sorting unit 4 is charged to the opposite polarity to the first fiber, that is, positively. Then, the first fiber is adsorbed to the drum portion 41 by electrostatic force (hereinafter, also simply referred to as “adsorption”), and the second fiber is dropped from the drum portion 41 without being adsorbed to the drum portion 41. Then, the first fiber and the second fiber are separated. The details will be described below.

  The charge applying unit 3 includes a drum unit 31 (first mesh drum) which is an example of a first drum unit made of a mesh. A net means not only a braid but what has a plurality of openings.

  That is, the drum unit 31 has a cylindrical net body, rotates around its central axis, and has a sieve function. Specifically, the side wall (peripheral portion) of the drum portion 31 is formed of a mesh. The front wall and the back wall of the drum 31 may be nets, or may be other than nets, or may be omitted or opened.

  The defibrated material M3 flows into the drum portion 31. And when the drum part 31 rotates, the defibrated material M3 smaller than the mesh opening is selected as the first sorted material M4-1, and the defibrated material M3 larger than the mesh opening is It is separated as a second sorted product M4-2. The first sorted matter M4-1 drops from the drum unit 31 and reaches the drum unit 41.

  Further, the order in the charging series of the constituent material of the drum portion 31 is set between the foreign matter and the paper. That is, as a constituent material of the drum portion 31, a material whose order in the charging train is between the foreign matter and the paper is used. As such a material, polystyrene, copper, iron etc. are mentioned, for example.

  Therefore, when the drum unit 31 rotates, friction is generated between the drum unit 31 and the first and second fibers, and the friction negatively charges the first fiber. The fibers are positively charged.

  Further, the opening of the drum portion 31 is not particularly limited and is appropriately set according to various conditions, but is preferably 110 μm or more and 590 μm or less, and more preferably 150 μm or more and 500 μm or less The thickness is more preferably 200 μm or more and 400 μm or less, and particularly preferably 220 μm or more and 380 μm or less (see FIG. 15).

  If the opening is smaller than the lower limit value, sufficient fiber length may not be obtained depending on other conditions, and the strength or rigidity (paper strength) of the manufactured sheet S may be lowered. If the opening is larger than the upper limit value, the unnecessary second sorted matter M4-2 may not be removed depending on other conditions.

  The sorting unit 4 includes a drum unit 41 (second mesh drum), which is an example of a second drum unit made of a net, and a collection mechanism 42 that collects the first fibers.

  That is, the drum unit 41 has a cylindrical net body, rotates around its central axis, and has a sieve function. Specifically, the side wall (peripheral portion) of the drum portion 41 is formed of a mesh. The front wall and the back wall of the drum 41 may be nets, or may be other than nets, or may be omitted and opened. In the present embodiment, the back wall of the drum portion 41 is omitted and is open.

  The drum portion 41 is concentrically disposed on the outer peripheral portion of the drum portion 31 and rotates on the outer peripheral portion of the drum portion 31. The first sorted matter M4-1 (the second sorted matter M4-2 may be included) drops from the drum unit 31 to the drum unit 31.

  In addition, when the drum unit 41 is used, a positive voltage is applied by the voltage application device 5, and the drum unit 41 is charged in the opposite polarity to the first fiber, that is, positively. The voltage application device 5 has, for example, a power supply unit 51 and a switch 52, and applies a positive voltage to the drum unit 41 when the switch 52 is turned on. The switch 52 may be switched on and off manually by the user, or may be switched automatically.

  As the drum unit 41 is positively charged, the first fibers in the first sorted product M4-1 falling from the drum unit 31 are adsorbed to the drum unit 41, and the second fibers are the drum unit 41. Drops from the drum unit 41 without suction. In this case, when the drum portion 41 rotates, the second fibers are likely to fall from the mesh of the drum portion 41. Thus, the first fiber and the second fiber are separated, and the second fiber drops from the drum portion 41 and reaches the mesh belt 151.

  Further, as the drum unit 41 rotates, like the drum unit 31, the first sorted matter M4-1 smaller than the mesh size of the mesh, and the second sorted material M4-2 of a size larger than the mesh size of the meshed size And separated.

  Further, the opening of the drum portion 41 is not particularly limited and is appropriately set according to various conditions, but is preferably 110 μm or more and 590 μm or less, and more preferably 150 μm or more and 500 μm or less The thickness is more preferably 200 μm or more and 400 μm or less, and particularly preferably 220 μm or more and 380 μm or less (see FIG. 15).

  If the opening is smaller than the lower limit value, sufficient fiber length may not be obtained depending on other conditions, and the strength or rigidity (paper strength) of the manufactured sheet S may be lowered. If the opening is larger than the upper limit value, the unnecessary second sorted matter M4-2 may not be removed depending on other conditions.

  Further, the openings of the drum unit 31 and the drum unit 41 may be the same or different. In the case of being different, the opening of the drum portion 31 may be larger, and the opening of the drum portion 41 may be larger.

  In the case where the opening of the drum unit 31 is larger than the opening of the drum unit 41 (when the opening of the drum unit 41 is smaller) (No. 5 in FIG. 15), By roughly sieving, it is possible to suppress removal of fibers of an appropriate size by the drum unit 31, and the sieving is accurately performed by the drum unit 41. This can improve the yield.

  Further, when the opening of the drum unit 41 is larger than that of the drum unit 31 (when the opening of the drum unit 31 is smaller) (No. 3 in FIG. 15), the drum unit 31 is not necessary. It is possible to more appropriately remove the fibers of the size (including the second sort M4-2), and the drum unit 41 stores the fibers of the more appropriate size. Thereby, in the drum part 41, it can suppress that the fiber of an unnecessary dimension becomes an obstruction of the classification of the fiber of an appropriate dimension. Further, by separating the second sorted product M4-2 by the drum unit 31, it passes through the pipe 243, merges with the coarse fragments M2 in the pipe 241, and flows into the defibrating section 13 together with the coarse fragments M2. As a result, the second sorted product M4-2 is returned to the defibrating unit 13 and disintegrated with the coarse fragments M2. Therefore, the yield of the defibrated material M3 can be increased.

  Moreover, although the rotation direction of the drum part 31 and the drum part 41 may be the same and may differ, it is the same in this embodiment.

  The rotational speeds (rotational speeds) of the drum unit 31 and the drum unit 41 may be the same or different.

  Further, the recovery mechanism 42 has a blade 43 which is an example of a member for collecting the first fibers, and a discharge unit 44 for discharging the collected first fibers.

  The blade 43 is provided on the inner circumferential portion of the drum portion 41 independently of the drum portion 41. Therefore, even if the drum unit 41 rotates, the blade 43 is not displaced. Further, the blade 43 is disposed along the inner peripheral surface of the drum portion 41 and is inclined at a predetermined angle with respect to the rotation axis of the drum portion 41. That is, the blades 43 are arranged in a spiral of less than one rotation. The blade 43 is disposed from one end (tip end) to the other end (rear end) of the drum portion 41 in the rotational axis direction.

  Further, in the present embodiment, the discharge portion 44 is an opening formed on the outer peripheral portion of the front wall 411 of the drum portion 41, and is disposed in the vicinity of the end portion of the blade 43 on the front wall 411 side. Also, the front wall 411 does not rotate. Hereinafter, the operation of the recovery mechanism 42 will be described.

  As shown in FIGS. 5 and 6, the first fiber is negatively charged by the drum unit 31, falls onto the drum unit 41, and is attracted to the drum unit 41.

  Next, as shown in FIG. 7, as the drum portion 41 rotates, the first fiber moves to the position of the blade 43, and as shown in FIGS. 8 and 9, the discharge portion along the blade 43 It moves to 44 and is discharged from the discharge unit 44 to the outside as shown in FIG. The first fibers collected by the collection unit 61 are discarded or reused.

  As described above, according to the sheet manufacturing apparatus 100 (sorting device 1), it is possible to properly sort the first fiber and the second fiber. Thus, by manufacturing the sheet S using the separated second fibers, it is possible to manufacture the sheet S with good quality.

  As described above, the sorting apparatus 1 applies a charge to the defibrated material M3 including the first fiber to which the foreign matter is attached and the second fiber to which the adhesion amount of the foreign matter is smaller than the first fiber. A charge application unit 3 and a separation unit 4 for separating a first fiber and a second fiber using a potential difference between a first fiber and a second fiber after charge application by the charge application unit 3. And.

  According to such a sorting apparatus 1, the first fiber and the second fiber can be sorted properly. Then, for example, by manufacturing the sheet S using the sorted second fibers, it is possible to manufacture the sheet S with good quality.

  In addition, the charge applying unit 3 charges the first fiber and the second fiber to different polarities. Thereby, the first fiber and the second fiber can be easily and appropriately separated as compared with the case where the first fiber and the second fiber are charged to the same polarity.

  Further, the charge application unit 3 negatively charges the first fiber and positively charges the second fiber by friction. Thereby, the first fiber and the second fiber can be easily and appropriately separated as compared with the case where the first fiber and the second fiber are charged to the same polarity.

  Further, the charge applying unit 3 rotates while housing the defibrated material M3 therein, and has a drum unit 31 (first drum unit) made of a net. Thereby, the first fiber and the second fiber are respectively charged by the friction between the first fiber, the second fiber, and the drum portion 31 (first drum portion). Further, the drum portion 31 (first drum portion) becomes a sieve, and the first fibers and the second fibers of appropriate sizes are discharged from the mesh of the drum portion 31 (first drum portion).

  Further, the sorting unit 4 rotates on the outer peripheral portion of the drum unit 31 (first drum unit), is charged to the opposite polarity to the first fiber, and is a drum unit 41 (second drum unit) formed of a net. Have. As a result, the first fiber is attracted to the drum portion 41 (second drum portion) by electrostatic force, and the second fiber is not attracted to the drum portion 41 (second drum portion). It is discharged from the mesh of the second drum portion, whereby the first fiber and the second fiber are separated.

  Moreover, the order in the charging sequence of the constituent material of the drum unit 31 (first drum unit) is between foreign matter and paper. Thereby, the first fiber and the second fiber can be charged to different polarities by the friction between the first fiber, the second fiber, and the drum portion 31 (first drum portion).

  Further, the sorting unit 4 has a recovery mechanism 42 for recovering the first fiber. Thereby, the first fiber can be easily discarded or reused.

  Further, the recovery mechanism 42 has a blade 43 which is an example of a member for collecting the first fibers, and a discharge unit 44 for discharging the collected first fibers. Thereby, the first fiber can be recovered easily and properly.

  Further, the foreign matter includes at least one of ink and toner. As a result, it is possible to separate the first fiber to which at least one of the ink and the toner adheres and the second fiber whose adhesion amount is smaller than that of the first fiber.

The sheet manufacturing apparatus 100 includes the sorting apparatus 1.
According to such a sheet manufacturing apparatus 100, the first fibers and the second fibers can be properly separated. Thus, by manufacturing the sheet S using the separated second fibers, it is possible to manufacture the sheet S with good quality.

Second Embodiment
FIG. 11 is a rear view (including a block diagram) schematically showing the sorting apparatus in the second embodiment of the sheet manufacturing apparatus of the present invention. FIG. 12 is a plan view schematically showing the sorting section of the sorting apparatus shown in FIG.

Hereinafter, although 2nd Embodiment is described, it demonstrates focusing on difference with embodiment mentioned above, and the same matter abbreviate | omits the description.
The second embodiment is the same as the first embodiment except that the sorting unit 4 is different from the first embodiment.

  As shown in FIGS. 11 and 12, in the sheet manufacturing apparatus 100 according to the second embodiment, the sorting unit 4 includes a belt 45 (mesh belt) made of a mesh, two tension rollers 46, and a first And a recovery mechanism 42 for recovering the fibers of the

  The belt 45 is installed below the drum portion 31 in the vertical direction so as to be movable in the lateral direction in FIG. The belt 45 is an endless belt, and is wound around two tension rollers 46 spaced apart in the left and right direction in FIG. 11 and circulated. Also, in use, the belt 45 is charged by the voltage application device 5 in the opposite polarity to the first fiber, that is, positively.

  The opening of the belt 45 is not particularly limited and may be appropriately set according to various conditions, but is preferably 110 μm or more and 590 μm or less, and more preferably 150 μm or more and 500 μm or less The thickness is more preferably 200 μm or more and 400 μm or less, and particularly preferably 220 μm or more and 380 μm or less. The reason is the same as in the first embodiment.

  Further, the blade 43 of the recovery mechanism 42 is disposed along the surface of the belt 45 opposite to the drum portion 31. Further, the blade 43 is inclined in a direction orthogonal to the moving direction of the belt 45, that is, at a predetermined angle with respect to the rotation axis of the tension roller 46. The blade 43 is disposed from one end to the other end of the belt 45 in the width direction (direction orthogonal to the moving direction of the belt 45).

  Further, the discharge part 44 of the recovery mechanism 42 is a space at one end of the blade 43 in the present embodiment.

  According to the second embodiment as described above, the same effect as that of the above-described embodiment can be exhibited.

  As described above, the sorting unit 4 is installed movably downward in the vertical direction of the drum unit 31 (first drum unit), is charged to the opposite polarity to the first fiber, and is a belt made of a net It has 45. Thereby, the first fibers are attracted to the belt 45 by electrostatic force, and the second fibers are discharged from the mesh of the belt 45 without being attracted to the belt 45, whereby the first fibers and the second fibers are removed. And the fibers of the

Third Embodiment
FIG. 13 is a rear view (including a block diagram) schematically showing the sorting apparatus in the third embodiment of the sheet manufacturing apparatus of the present invention. FIG. 14 is a plan view schematically showing the sorting section of the sorting apparatus shown in FIG. In addition, illustration of a 1st fiber and a 2nd fiber is abbreviate | omitted in FIG.

  Hereinafter, although 3rd Embodiment is described, it demonstrates focusing on difference with embodiment mentioned above, and the same matter abbreviate | omits the description.

  The third embodiment is the same as the second embodiment except that the recovery mechanism 42 of the sorting unit 4 is different from the second embodiment.

  As shown in FIGS. 13 and 14, in the sheet manufacturing apparatus 100 according to the third embodiment, the recovery mechanism 42 is a brush that is an example of a member that separates the first fibers from the mesh of the mesh forming the belt 45. A roller 47 and a suction unit 48 for suctioning the separated first fiber are provided.

  The brush roller 47 is disposed between the opposing belts 45. In addition, the brush roller 47 is disposed in a direction orthogonal to the moving direction of the belt 45, that is, in parallel with the rotation axis of the tension roller 46. The brush roller 47 is disposed from one end to the other end of the belt 45 in the width direction (direction orthogonal to the moving direction of the belt 45). Further, the tip of the brush of the brush roller 47 protrudes vertically downward from the surface of the belt 45 opposite to the drum portion 31.

  The brush roller 47 may be configured to be rotatable by, for example, a drive source (not shown) such as a motor, and such a drive source may not be provided. When the brush roller 47 is rotated by a drive source, the rotation direction of the brush roller 47 is preferably opposite to the rotation direction of the tension roller 46.

  The suction portion 48 is disposed vertically below the brush roller 47, and includes the brush roller 47 in a plan view of the belt 45. For example, a suction pump or the like is connected to the suction unit 48.

  According to the third embodiment as described above, the same effect as that of the above-described embodiment can be exhibited.

  As described above, the recovery mechanism 42 includes the roller brush 47 which is an example of a member that separates the first fibers from the mesh of the mesh, and the suction unit 48 that sucks the separated first fibers. Thereby, the first fiber can be recovered easily and properly.

<Experiment>
In order to confirm the effect of the sheet manufacturing apparatus 100 described above, the following experiment was performed.
FIG. 15 is a table showing experimental results.

(experimental method)
The sheet manufacturing apparatus 100 of the first embodiment is prepared, and the openings of the drum unit 31 and the drum unit 41 of the sorting apparatus 1 are changed to 100 μm, 200 μm, 260 μm, 300 μm, 340 μm, 400 μm, 500 μm, and 600 μm, respectively. A sheet was manufactured with the combination of openings shown in FIG.

  And evaluation of the removability of the fiber mass in the fractionating apparatus 1, evaluation of the sufficient fiber length suitable for manufacturing the sheet, evaluation of the removability of the fiber mass and the sufficient fiber length suitable for manufacturing the sheet We made a comprehensive evaluation. Each evaluation was performed in five steps of A (best), B (good), C (normal), D (bad), and E (worst). The result is as shown in FIG.

(Experimental result)
As shown in FIG. 15, when the openings were set to “300 μm”, “260 μm, 340 μm”, and “340 μm, 260 μm”, the comprehensive evaluation was “A”.

  Moreover, when the opening was set to "200 micrometers", "400 micrometers", and "500 micrometers", comprehensive evaluation was "B".

  Moreover, when an opening was set to "100 micrometers" and "600 micrometers", comprehensive evaluation was "BC".

  Although the sorting apparatus and the sheet manufacturing apparatus of the present invention have been described above based on the illustrated embodiment, the present invention is not limited thereto, and each section is replaced by an arbitrary configuration having the same function. can do. Also, any other component may be added.

  The present invention may be a combination of any two or more configurations (features) of the above-described embodiments.

  In the present invention, the drum portion 41 of the sorting unit 4 may be charged to the same polarity as the first fiber, that is, to the negative. In this case, the second fibers are adsorbed to the drum unit 41, and the first fibers are not adsorbed to the drum unit 41, and the first fibers and the second fibers are dropped from the drum unit 41. And separate.

  Further, in the present invention, the charge imparting unit 3 charges the first fiber and the second fiber to the same polarity, that is, to charge both the first fiber and the second fiber positively or negatively. It may be configured. In this case, one of the first fiber and the second fiber is made to be more charged than the other. Further, among the first fiber and the second fiber, one having a large charge amount is adsorbed to the drum portion 41, and one having a small charge amount is dropped from the drum portion 41 without being adsorbed to the drum portion 41. Let's do it. Thereby, the first fiber and the second fiber can be separated.

  Further, in the present invention, the charge applying unit 3 may charge the first fiber positively and the second fiber negatively.

  Further, in the present invention, the sorting unit 4 includes a plurality of (for example, two) drum units 41 or a plurality of (for example, two) belts 45, or the drum unit 41 and the belt 45 And a plurality of (for example, two) in total may be provided.

  Further, in the present invention, as the first drum unit of the charge applying unit 3, one other than the mesh may be used. In this case, for example, an opening is provided in the front or back of the first drum portion, and after charging the first fiber and the second fiber, the first fiber and the second fiber are removed from the opening. Discharge.

  Similarly, as the second drum unit of the sorting unit 4 and the belt of the sorting unit 4, one other than the mesh may be used.

  Further, in the present embodiment, the sorting apparatus is applied to a sheet manufacturing apparatus, but in the present invention, the application of the sorting apparatus is not limited to this.

  DESCRIPTION OF SYMBOLS 1 ... Fractionation apparatus, 3 ... Charge provision part, 4 ... Classification part, 5 ... Voltage application apparatus, 10 ... Housing part, 11 ... Raw material supply part, 12 ... Crushing part, 13 ... Defibrillation part, 15 ... 1st web Forming portion 16 Subdivision portion 17 Mixing portion 18 Lobe portion 19 Second web forming portion 20 Sheet forming portion 21 Cutting portion 22 Stock portion 27 Recovery portion 31 Drum Parts, 41: Drum parts, 42: Recovery mechanism, 43: Blades, 44: Discharge parts, 45: Belts, 46: Stretching rollers, 47: Brush rollers, 48: Suction parts, 51: Power parts, 52: Switches, DESCRIPTION OF SYMBOLS 61 ... Recovery part, 100 ... Sheet manufacturing apparatus, 121 ... Crushing blade, 122 ... Chute, 151 ... Mesh belt, 152 ... Stretching roller, 153 ... Suction part, 161 ... Propeller, 162 ... Housing part, 171 ... Resin supply Department, 172 ... tube 173: blower, 174: screw feeder, 181: drum unit, 182: housing unit, 191: mesh belt, 192: stretching roller, 193: suction unit, 201: pressing unit, 202: heating unit, 203: calender roller , 204: heating roller, 211: first cutter, 212: second cutter, 231: humidifying part, 232: humidifying part, 233: humidifying part, 234: humidifying part, 235: humidifying part, 236: humidifying part, 241 Tube, 242, tube 243, tube 244, tube 245, tube 246, tube 261, blower 262, blower 262, blower 263, blower 411, front wall CM, color material M1, raw material M2, M2 Crushed fragments, M3 ... defibrated material, M4-1 ... first sorted material, M4-2 ... second sorted material, M5 ... first web, M6 ... subdivided material, M7 ... mixture, M8 ... second E Breakfast, P1 ... resin, S ... sheet

Claims (12)

A charge applying unit that applies a charge to a defibrated material including a first fiber to which a foreign matter is attached and a second fiber to which the foreign matter is attached less than the first fiber;
A sorting unit for sorting the first fiber and the second fiber using a potential difference between the first fiber and the second fiber after the charge application unit applies the charge; A sorting apparatus characterized by comprising.   The sorting apparatus according to claim 1, wherein the charge applying unit charges the first fiber and the second fiber to different polarities.   The sorting apparatus according to claim 1, wherein the charge application unit negatively charges the first fiber and positively charges the second fiber by friction.   The sorting apparatus according to any one of claims 1 to 3, wherein the charge applying unit rotates while housing the defibrated material therein, and has a first drum unit made of a net.   5. The sorting apparatus according to claim 4, wherein the sorting section has a second drum section which is rotated around the outer periphery of the first drum section, charged to a polarity opposite to that of the first fibers, and made of a net. .   5. The sorting unit according to claim 4, wherein the sorting unit is movably installed below the first drum unit in the vertical direction, charged with a polarity opposite to that of the first fiber, and has a belt made of a net. apparatus.   The sorting apparatus according to any one of claims 4 to 6, wherein the order in the charging series of the constituent material of the first drum portion is between the foreign matter and the paper.   The sorting apparatus according to any one of claims 4 to 7, wherein the sorting section has a recovery mechanism for recovering the first fiber.   9. The sorting apparatus according to claim 8, wherein the recovery mechanism has a member for collecting the first fibers, and a discharge unit for discharging the collected first fibers.   9. The sorting apparatus according to claim 8, wherein the recovery mechanism includes a member that separates the first fibers from the mesh of the mesh, and a suction unit that sucks the separated first fibers.   The separating apparatus according to any one of claims 1 to 10, wherein the foreign matter includes at least one of ink and toner.   A sheet manufacturing apparatus comprising the sorting apparatus according to any one of claims 1 to 11.

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