WO2018173850A1 - Dispositif de séparation, procédé de séparation et appareil de production de feuille - Google Patents

Dispositif de séparation, procédé de séparation et appareil de production de feuille Download PDF

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Publication number
WO2018173850A1
WO2018173850A1 PCT/JP2018/009671 JP2018009671W WO2018173850A1 WO 2018173850 A1 WO2018173850 A1 WO 2018173850A1 JP 2018009671 W JP2018009671 W JP 2018009671W WO 2018173850 A1 WO2018173850 A1 WO 2018173850A1
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WO
WIPO (PCT)
Prior art keywords
unit
separation
web
color material
sheet
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Application number
PCT/JP2018/009671
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English (en)
Japanese (ja)
Inventor
関　俊一
田中　博
紘樹 倉田
上野　芳弘
新井　聖
依田　兼雄
市川　和弘
秀裕 ▲高▼野
Original Assignee
セイコーエプソン株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Priority claimed from JP2017057149A external-priority patent/JP2018159154A/ja
Priority claimed from JP2017057150A external-priority patent/JP2018159155A/ja
Priority claimed from JP2017057148A external-priority patent/JP6844362B2/ja
Application filed by セイコーエプソン株式会社 filed Critical セイコーエプソン株式会社
Publication of WO2018173850A1 publication Critical patent/WO2018173850A1/fr

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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/64—Paper recycling

Definitions

  • the present invention relates to a separation apparatus, a separation method, and a sheet manufacturing apparatus.
  • Patent Document 1 a deinked pulp manufacturing method by a wet method in which ink is separated from pulp using a chemical is disclosed (for example, see Patent Document 1).
  • Patent Document 2 a paper recycling apparatus that performs deinking by classifying a defibrated material with an air current using a cyclone is known (for example, see Patent Document 2).
  • the deinked pulp manufacturing method disclosed in Patent Document 1 requires a large facility for handling a large amount of chemicals and treated water. Further, in the airflow classification of the paper recycling apparatus disclosed in Patent Document 2, there is a case where the separation between the fiber and the color material is insufficient.
  • the present invention has been made to solve at least a part of the problems described above, and can be realized as the following forms or application examples.
  • a separation apparatus is configured to vibrate a deposit portion for depositing a defibrated material including fibers and a color material, and a web-like deposit deposited by the deposit portion, and the web-like shape is caused by vibration. And a separation unit that removes the color material from the deposit.
  • the separation unit of the separation device according to the application example described above includes a vibration applying unit that applies vibration to the support member that supports the web-like deposit or the web-like deposit.
  • vibration is imparted in a state where the vibration imparting portion is in contact with the web-like deposit or the support portion that supports the web-like deposit, and the coloring material can be efficiently removed from the web-like deposit.
  • the separation unit of the separation device according to the application example includes a vibration applying unit that applies vibration to the support member that supports the web deposit or the web deposit without contact.
  • the vibration is applied to the web-like deposit or the support portion that supports the web-like deposit in a non-contact state. It is possible to efficiently remove the color material from the web-like deposit while suppressing the above.
  • the separation apparatus derives the amount of the color material included in the sheet based on the image acquisition unit that reads the image of the supplied sheet and the image acquired by the image acquisition unit.
  • the amount of the color material derived by the derivation unit is large, the web-like deposit is provided compared to when the amount of the color material is small. It is characterized by increasing the excitation force.
  • the excitation force is increased to cope with the color material amount.
  • the color material can be efficiently removed.
  • a separation apparatus applies a gas flow to a deposition unit that deposits a defibrated material including fibers and a coloring material, and a web-like deposit deposited by the deposition unit. And a separation part for removing the color material from the web-like deposit.
  • the fibers contained in the web-like deposit remain due to the bonding force between the fibers, but the coloring material has a weak bonding force with the fiber. Detach. Thereby, the color material contained in the web-like deposit can be removed with a simple apparatus configuration.
  • the airflow is a compressed airflow.
  • the color material contained in the web-like deposit can be easily removed by applying compressed air to the deposited web-like deposit.
  • the airflow is a pulsating flow.
  • the separation device includes a humidity control unit that controls humidity in a space including at least the separation unit.
  • the separation device derives the amount of the color material included in the sheet based on the image acquisition unit that reads the image of the supplied sheet and the image acquired by the image acquisition unit.
  • a derivation unit and a defibrating unit for defibrating the sheet, and the humidity control unit has a larger amount of color material derived by the derivation unit, compared to when the amount of color material is small, It is characterized by high humidity in the space.
  • the humidity is controlled to be higher than when the amount of color material is small, and the separation process is executed in a higher humidity environment. Therefore, since the binding force due to static electricity between the fiber and the color material is weakened, the separation process can be executed efficiently.
  • a separation apparatus includes a charging unit that charges a defibrated material including fibers and a color material, and a first defibrated material that contains more fibers than the color material depending on the amount of charge.
  • a separation unit that separates a group into a second defibrated material group that includes more color material than the first defibrated material group, and a humidity control unit that controls the humidity of a space including at least the separation unit, It is characterized by having.
  • the defibrated material charged in the humidity-controlled space is separated into the first defibrated material group and the second defibrated material group.
  • the first defibrated material group containing more fibers than the color material and the second defibrated material group containing more color material than the first defibrated material group are easily separated. be able to.
  • the separation device derives the amount of the color material included in the sheet based on the image acquisition unit that reads the image of the supplied sheet and the image acquired by the image acquisition unit. And the humidity control unit reduces the humidity of the space when the color material amount derived by the deriving unit is large compared to when the color material amount is small. And
  • the humidity is controlled to be lower than when the amount of the color material is small, and the separation process is executed in an environment where the humidity is lower. Therefore, it becomes an environment where the defibrated material is more easily charged, and the separation process can be executed efficiently.
  • the separation apparatus derives the amount of the color material included in the sheet based on the image acquisition unit that reads the image of the supplied sheet and the image acquired by the image acquisition unit. And the charging unit increases the charging voltage or the charging current when the amount of the color material derived by the deriving unit is large compared to when the amount of the color material is small. To do.
  • the separation process can be executed efficiently.
  • a sheet manufacturing apparatus includes the separation apparatus described above.
  • a sheet having good whiteness can be manufactured by using the defibrated material from which the color material has been removed in the separating device or the separated first defibrated material group.
  • a separation method includes charging a defibrated material containing fibers and a color material, and depending on the amount of charge, a first defibrated material group containing more fibers than the color material, It separates into the 2nd defibrated material group which contains more coloring materials than the said 1st defibrated material group, and controls the humidity of the space to separate at least.
  • the defibrated material charged in the humidity-controlled space is separated into the first defibrated material group and the second defibrated material group.
  • the first defibrated material group containing more fibers than the color material and the second defibrated material group containing more color material than the first defibrated material group can be separated by a simple method. .
  • the schematic diagram which shows the structure of the separation apparatus concerning 2nd Embodiment The schematic diagram which shows the structure of the separation apparatus concerning 3rd Embodiment.
  • the schematic diagram which shows the structure of the sheet manufacturing apparatus concerning 4th Embodiment The schematic diagram which shows the structure of the separation apparatus concerning 4th Embodiment.
  • the schematic diagram which shows the structure of the separation apparatus concerning 4th Embodiment The flowchart which shows the separation method concerning 4th Embodiment.
  • the schematic diagram which shows the structure of the separation apparatus concerning 5th Embodiment The schematic diagram which shows the structure of the sheet manufacturing apparatus concerning 6th Embodiment.
  • the schematic diagram which shows the structure of the separation apparatus concerning 6th Embodiment The schematic diagram which shows the structure of the separation apparatus concerning 6th Embodiment.
  • the schematic diagram which shows the structure of the separation apparatus concerning 6th Embodiment The schematic diagram which shows the structure of the separation apparatus concerning 6th Embodiment.
  • the schematic diagram which shows the structure of the separation apparatus concerning 10th Embodiment The schematic diagram which shows the structure of the separation apparatus concerning 11th Embodiment.
  • the flowchart which shows the separation method concerning 11th, 12th embodiment The schematic diagram which shows the structure of the separation apparatus concerning 12th Embodiment.
  • the schematic diagram which shows the structure of the sheet manufacturing apparatus concerning 13th Embodiment The schematic diagram which shows the structure of the separation apparatus concerning 13th Embodiment.
  • the flowchart which shows the separation method concerning 13th Embodiment The flowchart which shows the separation method concerning 14th Embodiment.
  • the flowchart which shows the separation method concerning 16th Embodiment The schematic diagram which shows the structure of the separation apparatus concerning 17th Embodiment.
  • FIG. FIG. 9 is a partial schematic diagram illustrating a configuration of a sheet manufacturing apparatus according to Modification 3.
  • FIG. 1 is a schematic diagram illustrating a configuration of a sheet manufacturing apparatus according to the present embodiment.
  • the sheet manufacturing apparatus 100 includes a supply unit 10, a manufacturing unit 102, and a control unit 104.
  • the manufacturing unit 102 manufactures a sheet.
  • the manufacturing unit 102 includes a crushing unit 12, a defibrating unit 20, a sorting unit 40, a first web forming unit 45, a rotating body 49, a mixing unit 50, a depositing unit 60, and a second web forming unit. 70, a sheet forming unit 80, and a cutting unit 90.
  • the sheet manufacturing apparatus 100 includes a separation device 3000.
  • the supply unit 10 supplies raw materials to the crushing unit 12.
  • the supply unit 10 is, for example, an automatic input unit for continuously supplying raw materials to the crushing unit 12.
  • the raw material supplied by the supply part 10 contains fibers, such as a used paper and a pulp sheet, for example.
  • the coarse crushing unit 12 cuts the raw material supplied by the supply unit 10 into pieces by cutting in air.
  • the shape and size of the strip is, for example, a strip of several cm square.
  • the crushing unit 12 has a crushing blade 14, and the charged raw material can be cut by the crushing blade 14.
  • a shredder is used, for example.
  • the raw material cut by the crushing unit 12 is received by the hopper 1 and then transferred (conveyed) to the defibrating unit 20 through the pipe 2.
  • the defibrating unit 20 defibrates the raw material cut by the crushing unit 12.
  • “defibration” means unraveling a raw material (a material to be defibrated) formed by binding a plurality of fibers into individual fibers.
  • the defibrating unit 20 also has a function of separating the resin particles, ink, and toner attached to the raw material from the fibers.
  • the “defibrated material” may include a color material such as ink and toner in addition to the defibrated fiber that has been unwound.
  • the shape of the defibrated material that has been unraveled is a string shape or a ribbon shape.
  • the unraveled defibrated material may exist in an unentangled state (independent state) with other undisentangled fibers, or entangled with other undisentangled defibrated material to form a lump. It may exist in a state (a state forming a so-called “dama”).
  • the defibrating unit 20 performs defibration by a dry method. Here, performing a process such as defibration in the air (in the air), not in the liquid, is called dry.
  • a process such as defibration in the air (in the air), not in the liquid, is called dry.
  • an impeller mill is used in the present embodiment.
  • the defibrating unit 20 has a function of generating an air flow that sucks the raw material and discharges the defibrated material. As a result, the defibrating unit 20 can suck the raw material together with the airflow from the introduction port 22 with the airflow generated by itself, defibrate, and transport the defibrated material to the discharge port 24.
  • the defibrated material that has passed through the defibrating unit 20 is transferred to the sorting unit 40 via the tube 3.
  • the airflow for conveying a defibrated material from the defibrating unit 20 to the sorting unit 40 may use an airflow generated by the defibrating unit 20, or an airflow generation device such as a blower is provided, May be used.
  • the sorting unit 40 (a part of the depositing unit 400) introduces a defibrated material including the fiber and the color material defibrated by the defibrating unit 20 from the introduction port 42 and sorts the defibrated material according to the length of the fiber. Deposit objects on the mesh belt.
  • the sorting unit 40 includes a drum unit 41 and a housing unit 43 that accommodates the drum unit 41. As the drum part 41, for example, a sieve is used.
  • the drum portion 41 has a net (filter, screen), fibers or particles smaller than the mesh size of the mesh (one passing through the mesh, the first selection), and fibers larger than the mesh size of the mesh. Undefibrated pieces and lumps (those that do not pass through the net, second sort) can be separated.
  • the first selection is transferred to the mixing unit 50 via the pipe 7.
  • the second selected item is returned to the defibrating unit 20 from the discharge port 44 through the pipe 8.
  • the drum part 41 is a cylindrical sieve that is rotationally driven by a motor.
  • a metal net for example, a metal net, an expanded metal obtained by extending a cut metal plate, or a punching metal in which a hole is formed in the metal plate by a press machine or the like is used.
  • the 1st web formation part 45 (a part of accumulation part 400) conveys the 1st sorting thing which passed sorting part 40 to mixing part 50.
  • the first web forming unit 45 includes a mesh belt 46, a plurality of stretching rollers 47, and a suction unit (suction mechanism) 48.
  • the suction unit 48 (a part of the depositing unit 400) can suck the first selection material dispersed in the air through the opening (the opening of the mesh) of the selection unit 40 onto the mesh belt 46.
  • the first sort is deposited on the moving mesh belt 46 to form a web V (corresponding to a web-like deposit).
  • the basic configurations of the mesh belt 46, the stretching roller 47, and the suction unit 48 are the same as the mesh belt 72, the stretching roller 74, and the suction mechanism 76 of the second web forming unit 70 described later.
  • the web V is formed in a soft and swelled state containing a lot of air by passing through the sorting unit 40 and the first web forming unit 45.
  • the web V deposited on the mesh belt 46 is put into the tube 7 and conveyed to the mixing unit 50.
  • a separation unit 600 (a part of the separation device 3000) is provided that vibrates the web V deposited by the deposition unit 400 (a part of the separation device 3000) and removes the coloring material from the web V by the vibration. It has been. Then, the web V from which the color material has been removed by the separation unit 600 is put into the pipe 7. A detailed description of the separation device 3000 will be described later.
  • the rotating body 49 can cut the web V before the web V is conveyed to the mixing unit 50.
  • the rotator 49 has a base 49a and a protrusion 49b protruding from the base 49a.
  • the protrusion 49b has, for example, a plate shape.
  • four protrusions 49b are provided, and four protrusions 49b are provided at equal intervals.
  • the base 49a rotates in the direction R
  • the protrusion 49b can rotate around the base 49a.
  • the rotating body 49 is provided in the vicinity of the first web forming portion 45.
  • the rotating body 49 is provided in the vicinity of the stretching roller 47a located on the downstream side in the path of the web V among the plurality of stretching rollers 47 (next to the stretching roller 47a).
  • the rotating body 49 is provided at a position where the protrusion 49b can come into contact with the web V and not in contact with the mesh belt 46 on which the web V is deposited. Thereby, it is possible to suppress the mesh belt 46 from being worn (damaged) by the protrusion 49b.
  • the shortest distance between the protrusion 49b and the mesh belt 46 is, for example, 0.05 mm or more and 0.5 mm or less, and is a distance at which the mesh belt 46 can be cut without being damaged.
  • the mixing unit 50 mixes the first sorted product that has passed through the sorting unit 40 (the first sorted product conveyed by the first web forming unit 45) and the additive containing resin.
  • the mixing unit 50 includes an additive supply unit 52 that supplies the additive, a pipe 54 that conveys the first selected product and the additive, and a blower 56.
  • the additive is supplied from the additive supply unit 52 to the pipe 54 via the hopper 9.
  • the tube 54 is continuous with the tube 7.
  • the mechanism which mixes a 1st selection material and an additive is not specifically limited, It may stir with the blade
  • the additive supply unit 52 As the additive supply unit 52, a screw feeder as shown in FIG. 1 or a disk feeder (not shown) is used.
  • the additive supplied from the additive supply unit 52 includes a resin (binding agent) for binding a plurality of fibers. At the time when the resin is supplied, the plurality of fibers are not bound. The resin melts when passing through the sheet forming portion 80 and binds a plurality of fibers.
  • the resin supplied from the additive supply unit 52 is a thermoplastic resin or a thermosetting resin.
  • a thermoplastic resin or a thermosetting resin for example, AS resin, ABS resin, polypropylene, polyethylene, polyvinyl chloride, polystyrene, acrylic resin, polyester resin, polyethylene terephthalate, Polyphenylene ether, polybutylene terephthalate, nylon, polyamide, polycarbonate, polyacetal, polyphenylene sulfide, polyether ether ketone, and the like. These resins may be used alone or in combination.
  • the additive supplied from the additive supply unit 52 may be fibrous or powdery.
  • the additive supplied from the additive supply unit 52 includes a coloring material for coloring the fiber, a fiber aggregation, and a resin, depending on the type of sheet to be manufactured.
  • a coloring material for coloring the fiber
  • a fiber aggregation for coloring the fiber
  • a resin depending on the type of sheet to be manufactured.
  • An agglomeration inhibitor for suppressing agglomeration of the resin and a flame retardant for making the fiber difficult to burn may be included.
  • the mixture (mixture of the first selection product and the additive) that has passed through the mixing unit 50 is transferred to the deposition unit 60 via the pipe 54.
  • the deposition unit 60 introduces the mixture that has passed through the mixing unit 50 from the introduction port 62, loosens the entangled defibrated material (fibers), and lowers it while dispersing it in the air. Furthermore, when the additive resin supplied from the additive supply unit 52 is fibrous, the deposition unit 60 loosens the entangled resin. Thereby, the deposition unit 60 can deposit the mixture on the second web forming unit 70 with good uniformity.
  • the accumulation unit 60 includes a drum unit 61 and a housing unit 63 that accommodates the drum unit 61.
  • a rotating cylindrical sieve is used as the drum part 61.
  • the drum unit 61 has a net, and drops fibers or particles (those that pass through the net) included in the mixture that has passed through the mixing unit 50 that are smaller than the mesh opening size.
  • the configuration of the drum unit 61 is the same as the configuration of the drum unit 41, for example.
  • the “sieving” of the drum unit 61 may not have a function of selecting a specific object. That is, the “sieving” used as the drum part 61 means a thing provided with a net, and the drum part 61 may drop all of the mixture introduced into the drum part 61.
  • the second web forming unit 70 deposits the passing material that has passed through the deposition unit 60 to form the web W.
  • the second web forming unit 70 includes, for example, a mesh belt 72, a plurality of stretching rollers 74, and a suction mechanism 76.
  • the mesh belt 72 deposits the passing material that has passed through the opening (opening of the mesh) of the deposition unit 60 while moving.
  • the mesh belt 72 is stretched by a plurality of stretching rollers 74, and is configured to allow air to pass therethrough easily.
  • the mesh belt 72 moves as the stretching roller 74 rotates. While the mesh belt 72 continuously moves, the passing material that has passed through the accumulation portion 60 is continuously piled up, whereby the web W is formed on the mesh belt 72.
  • the mesh belt 72 is made of, for example, metal, resin, cloth, or non-woven fabric.
  • the suction mechanism 76 is provided below the mesh belt 72 (on the side opposite to the accumulation unit 60 side).
  • the suction mechanism 76 can generate an air flow directed downward (air flow directed from the accumulation unit 60 toward the mesh belt 72).
  • the suction mechanism 76 By the suction mechanism 76, the mixture dispersed in the air by the deposition unit 60 can be sucked onto the mesh belt 72. Thereby, the discharge speed from the deposition part 60 can be increased.
  • the suction mechanism 76 can form a downflow in the dropping path of the mixture, and can prevent the defibrated material and additives from being entangled during the dropping.
  • the web W in a soft and swelled state containing a large amount of air is formed.
  • the web W deposited on the mesh belt 72 is conveyed to the sheet forming unit 80.
  • a humidity control unit 78 that adjusts the humidity of the web W is provided at a position downstream of the deposition unit 60 in the path of the web W.
  • the humidity control unit 78 can adjust the amount ratio of the web W and water by adding water or water vapor to the web W.
  • the sheet forming unit 80 forms the sheet S by pressurizing and heating the web W (deposit) deposited on the mesh belt 72.
  • the sheet forming unit 80 by applying heat to the mixture of the defibrated material and the additive mixed in the web W, the plurality of fibers in the mixture can be bound to each other via the additive (resin). it can.
  • the sheet forming unit 80 includes a pressurizing unit 82 that pressurizes the web W, and a heating unit 84 that heats the web W pressed by the pressurizing unit 82.
  • the pressurizing unit 82 includes a pair of calendar rollers 85 and applies pressure to the web W. The web W is pressed to reduce its thickness, and the density of the web W is increased.
  • the heating unit 84 for example, a heating roller (heater roller), a hot press molding machine, a hot plate, a hot air blower, an infrared heater, or a flash heater is used.
  • the heating unit 84 includes a pair of heating rollers 86.
  • the heating unit 84 By forming the heating unit 84 as the heating roller 86, the sheet S is formed while the web W is continuously conveyed as compared with the case where the heating unit 84 is configured as a plate-like pressing device (flat plate pressing device). Can do.
  • the calendar roller 85 pressure unit 82
  • the calendar roller 85 can apply a pressure higher than the pressure applied to the web W by the heating roller 86 (heating unit 84).
  • the number of calendar rollers 85 and heating rollers 86 is not particularly limited.
  • the cutting unit 90 cuts the sheet S formed by the sheet forming unit 80.
  • the cutting unit 90 includes a first cutting unit 92 that cuts the sheet S in a direction that intersects the conveyance direction of the sheet S, and a second cutting unit 94 that cuts the sheet S in a direction parallel to the conveyance direction. ,have.
  • the second cutting unit 94 cuts the sheet S that has passed through the first cutting unit 92, for example.
  • a single-sheet sheet S having a predetermined size is formed.
  • the cut sheet S is discharged to the discharge unit 96.
  • seat S may be sufficient.
  • the separation device 3000 includes a deposition unit 400 and a separation unit 600. Furthermore, the separation device 3000 of this embodiment includes an image acquisition unit 120, a derivation unit 130, a defibrating unit 20, a humidity control unit 200, and the like.
  • the image acquisition unit 120 reads an image of a single sheet (printed waste paper) supplied by the supply unit 10 (captures a sheet).
  • a scanner device provided with a line sensor or the like is used.
  • the two image acquisition units 120 are arranged so as to face each side of the supplied sheet.
  • the deriving unit 130 derives the amount of the color material included in the sheet based on the image acquired by the image acquiring unit 120. Specifically, a printed portion (printed region) on the sheet and a non-printed portion (non-printed region) on the sheet are determined, and the position, size, and shape of the printed portion on the sheet are calculated. Further, the ratio of the printed portion (print area) in the sheet is calculated. Then, the derivation result by the derivation unit 130 is supplied to the humidity control unit 200 and the separation unit 600. Since the deriving unit 130 has a function of controlling each unit, the control unit 104 (see FIG. 1) may be used instead of the deriving unit 130.
  • the sheet from which the image has been read is conveyed to the defibrating unit 20 via the crushing unit 12 and defibrated.
  • the structure of the crushing part 12 and the defibrating part 20 is the same as the above, description is abbreviate
  • omitted (refer FIG. 1).
  • the defibrated material that has been defibrated by the defibrating unit 20 is conveyed to the deposition unit 400.
  • the depositing unit 400 deposits a defibrated material including fibers and color materials.
  • the deposition unit 400 of the present embodiment includes a sorting unit 40, a first web forming unit 45, and a suction unit 48. Then, a deposit (web V) is deposited on the mesh belt 46 by the deposition unit 400.
  • the separation unit 600 vibrates the web V deposited by the deposition unit 400 and removes the color material from the web V by vibration. That is, the separation unit 600 of this embodiment includes a vibration separation mechanism.
  • the separation unit 600 includes a brush roller 601 serving as a vibration applying unit that comes into contact with the web V or the mesh belt 46 (corresponding to the support unit) that supports the web V to apply vibration.
  • the first brush roller 601a that contacts the web V deposited on the mesh belt 46
  • the second brush roller 601b that contacts the surface of the mesh belt 46 opposite to the surface on which the web V is deposited. It has.
  • the first brush roller 601 a is disposed above the mesh belt 46 on the downstream side in the transport direction of the sorting unit 40.
  • the second brush roller 601b is disposed below the mesh belt 46 (on the side opposite to the sorting unit 40 side) and downstream of the suction unit 48 in the conveyance direction of the web V.
  • the first brush roller 601a and the second brush roller 601b are arranged to face each other with the mesh belt 46 and the web V interposed therebetween.
  • a drive motor is connected to each of the first brush roller 601a and the second brush roller 601b, and is configured to be rotatable.
  • the first brush roller 601a has a roller portion 602a having a rotation axis and a brush portion 602b provided at a predetermined interval on the surface of the roller portion 602a so that the tip portion of the brush portion 602b contacts the web V. Placed in.
  • the length of the first brush roller 601a in the axial direction is set to be the same as or longer than the width of the web V deposited on the mesh belt 46 (the dimension in the direction crossing the transport direction). And by rotating the 1st brush roller 601a centering around a rotating shaft, it can contact uniformly and vibrate with respect to the width direction (direction crossing a conveyance direction) of the web V conveyed.
  • the brush part 602b is provided in the 1st brush roller 601a on the surface of the roller part 602a with the predetermined space
  • the second brush roller 601b includes a roller portion 603a having a rotation axis, and a brush portion 603b provided at a predetermined interval on the surface of the roller portion 603a, and a tip portion of the brush portion 603b is attached to the mesh belt 46. Arranged to touch.
  • the length in the axial direction of the second brush roller 601b is set to be the same as or longer than the width of the mesh belt 46 (the dimension in the direction intersecting the transport direction). Then, by rotating the second brush roller 601b about the rotation axis, it is possible to uniformly contact and vibrate in the width direction of the mesh belt 46 (direction intersecting the transport direction).
  • the brush part 603b is provided in the surface of the roller part 603a by the predetermined
  • Rotation directions of the first brush roller 601a and the second brush roller 601b are not particularly limited, but it is preferable to rotate the first brush roller 601a and the second brush roller 601b so as to follow the conveyance direction of the web V. If it does in this way, vibration can be given, improving the conveyance nature of web V.
  • the first brush roller 601a and the second brush roller 601b are provided. However, only one of them may be arranged. Further, as shown in FIG. 2A, the first brush roller 601a and the second brush roller 601b may be arranged so as to face each other in the vertical direction, or the first brush roller 601a and the second brush roller 601b are connected to the web. You may arrange
  • the web V deposited on the mesh belt 46 includes fibers and coloring materials, but the fibers have a relatively high bonding force between the fibers.
  • the coloring material has a weak binding force with the fiber, and the coloring material is collected with a certain degree of freedom between the fibers. Therefore, when the web V and the mesh belt 46 are vibrated by the brush roller 601, the fibers stay on the mesh belt due to the bonding force between the fibers, but the coloring material is detached from the fibers by the vibration. Thereby, the color material contained in the web V is removed. Some of the color material may remain on the web V without being detached. That is, at least a part of the color material included in the web V is removed, and the amount of the color material included in the web V is reduced. The color material detached from the web V falls downward from the mesh belt 46 and is accommodated in the container.
  • FIG. 3 is an explanatory diagram illustrating an example of a control method of the separation unit. As shown in FIG. 3, the drive ON and the drive OFF are repeated in the drive control of the brush roller 601. As a result, vibration is applied from the brush roller 601 or vibration is stopped, and pulsating vibration is applied to the web V.
  • the pulsating vibration applying method by the brush roller 601 is not limited to the vibration pattern in which the driving ON and the driving OFF are repeated at a constant cycle shown in the example of FIG. 3, and the driving ON and the driving OFF are repeated at an indefinite cycle. It may be a vibration pattern.
  • the excitation force of the brush roller 601 with respect to the web V may be controlled based on the derived result by the deriving unit 130.
  • the excitation force of the brush roller 601 on the web V is controlled based on the ratio of the printing area of the sheet by the derivation unit 130.
  • 4A and 4B are explanatory diagrams illustrating an example of another control method of the separation unit.
  • the amount of the color material derived by the deriving unit 130 is large, that is, when the ratio of the print area is large, compared with when the amount of color material is small, that is, when the ratio of the print area is small.
  • the excitation force is increased by increasing the amount of pressure applied to the web V.
  • the press contact amount is controlled to 0.25 mm.
  • the first brush roller 601a has a first brush portion 602b in which the tip portion of the brush portion 602b is pushed downward from the top surface Va of the web V (depth dimension). The vertical position of the roller 601a is controlled.
  • the press contact amount is controlled to 0.5 mm.
  • the press contact amount is controlled to 0.75 mm.
  • the press contact amount is controlled to 1.0 mm. Control is performed so that the amount of press contact increases as the ratio of the print area increases. That is, since the excitation force increases, vibration separation can be performed efficiently.
  • the excitation force is controlled by deriving unit 130, for example, by deriving an average value of the ratios of 10 print areas of the sheet from which the image is acquired, and brush roller 601 based on the average value of the ratios of the print areas. To control.
  • the humidity control unit 200 controls (humidifies) the humidity (relative humidity) of the space including at least the separation unit 600.
  • the humidity control unit 200 includes a chamber 211 and a humidity control unit 201.
  • the chamber 211 has a partition wall for forming a space.
  • the chamber 211 defines at least the separation unit 600.
  • the chamber 211 is disposed so as to surround the space including the deposition unit 400 including the separation unit 600.
  • the humidity control unit 201 supplies the conditioned air to the space in the chamber 211.
  • the humidity in the chamber 211 can be controlled by supplying the conditioned air to the space in the chamber 211.
  • the humidity control unit 201 includes a vaporization unit 202, a blower unit 203, and a humidity detection unit 204.
  • the vaporization unit 202 has a function of evaporating moisture, and for example, a vaporization type humidification method is applied.
  • the blower unit 203 sucks the air vaporized by the vaporizing unit 202 and exhausts the air from the exhaust port 208 toward the chamber 211.
  • the blower unit 203 includes an impeller that rotates by driving of a motor.
  • blower unit 203 can suck outside air, and can mix and exhaust the air from the vaporizing unit 202 and the outside air from the exhaust port 208 into the chamber 211.
  • the blower unit 203 includes an intake port (not shown) that can open and close the intake port from outside air, and can adjust the amount of outside air taken in.
  • the humidity detector 204 detects the humidity in the chamber 211 and is installed, for example, in the vicinity of the exhaust port 208 of the blower unit 203.
  • the humidity detection unit 204 is connected to the derivation unit 130.
  • the humidity control unit 200 can perform humidity control by controlling the driving of the blower unit 203 or changing the amount of outside air taken in. For example, based on the detection result of the humidity detection unit 204, when the humidity in the chamber 211 is higher than the predetermined humidity, the intake amount of outside air is increased while the drive of the blower unit 203 is kept constant. Since the humidity of the outside air is lower than the humidity in the chamber 211, air with low humidity is exhausted from the exhaust port 208 of the blower unit 203. Thereby, the relative humidity in the chamber 211 can be lowered.
  • the control method of the humidity control part 200 is not specifically limited, For example, you may perform humidity control by drive control of the motor of the blower unit 203.
  • the relative humidity of the space in the chamber 211 can be arbitrarily controlled by the humidity control unit 200.
  • the humidity control unit 200 is controlled to set the relative humidity of the space in the chamber 211 to 55% RH or more. In this way, the amount of charge of the fibers, the color material, and the mesh belt 46 is attenuated, so that the adhesion of the color material to the fiber due to static electricity is reduced, and vibration separation can be performed efficiently.
  • the relative humidity of the space in the chamber 211 is preferably set to 60% RH or higher. More preferably, the relative humidity of the space in the chamber 211 is set to 65% RH or more. This further attenuates the charge amount of the fibers, the color material, and the mesh belt 46, so that vibration separation can be performed with high efficiency.
  • the humidity control unit 200 of the present embodiment increases the humidity of the space in the chamber 211 when the amount of the color material derived by the deriving unit 130 is large, compared to when the amount of the color material is small. That is, the humidity of the space in the chamber 211 is controlled according to the amount of color material supplied. Specifically, using the image data of the sheet read by the image acquisition unit 120, the derivation unit 130 derives the ratio of the print portion (print region) in the sheet. The humidity control unit 200 is controlled and driven based on the derivation result of the derivation unit 130 to control the humidity in the chamber 211.
  • FIG. 5 is an explanatory diagram illustrating an example of a method for controlling the humidity control unit according to the present embodiment.
  • the relative humidity of the space in the chamber 211 is increased.
  • four levels of relative humidity control levels are provided.
  • the relative humidity of the space in the chamber 211 is controlled to 55% RH or more.
  • the humidity control unit 200 is driven and controlled as described above.
  • the relative humidity of the space in the chamber 211 is controlled to 60% RH or more.
  • the relative humidity of the space in the chamber 211 is controlled to 62% RH or more.
  • the relative humidity of the space in the chamber 211 is controlled to 65% RH or more. Since the relative humidity of the space in the chamber 211 is controlled to increase as the ratio of the printing area increases, separation of the coloring material by vibration is efficiently performed while suppressing the charging between the fibers of the web V and the coloring material. It can be carried out.
  • the relative humidity of the space in the chamber 211 is controlled by, for example, deriving an average value of the ratios of 10 printing areas of the sheet from which the image is acquired in the deriving unit 130 and based on the average value of the ratios of the printing areas.
  • the humidity control unit 200 By controlling the humidity control unit 200, the relative humidity of the space in the chamber 211 can be controlled.
  • FIG. 6 is a flowchart showing the separation method according to the present embodiment.
  • a defibrated material including fibers and a coloring material is deposited (deposition step (S16)), the deposited web V is vibrated, and the color from the web V is caused by vibration. The material is removed (separation step (S17)). This will be specifically described below.
  • the image acquisition step (S11) the image of the sheet supplied from the supply unit 10 by the image acquisition unit 120 is read.
  • the derivation unit 130 derives the amount of the color material included in the sheet. Specifically, a printed part (printed area) and a non-printed part (non-printed area) in the sheet are calculated. Furthermore, the ratio of the print portion (print region) in the sheet is calculated.
  • the relative humidity of the space in the chamber 211 including the separation unit 600 is controlled based on the derivation result of the derivation unit 130.
  • the humidity control unit 200 is driven and controlled according to the ratio of the print area based on the derivation result of the derivation unit 130 so that the relative humidity of the space in the chamber 211 becomes a desired relative humidity.
  • the control humidity adjustment
  • the control is performed so that the relative humidity of the space in the chamber 211 increases as the ratio of the printing area increases (see FIG. 5).
  • the sheet is cut into strips by the crushing unit 12.
  • the defibrating unit 20 defibrates the pieces by unraveling the fine pieces into individual fibers.
  • the web V is deposited on the mesh belt 46 by the deposition unit 400.
  • the deposition step (S16) is performed in the chamber 211. That is, it is carried out in an environment where the relative humidity is controlled.
  • the separation step (S17) the first brush roller 601a of the separation unit 600 is rotated in contact with the web V, and the web V on the mesh belt 46 is vibrated. Further, the second brush roller 601b is rotated while being in contact with the mesh belt 46, and the mesh belt 46 and the web V on the mesh belt 46 are vibrated. Thereby, the color material contained in the web V separates from between the fibers. That is, the color material is removed from the web V.
  • the separation step (S17) is performed in the chamber 211. That is, it is carried out in an environment where the relative humidity is controlled.
  • the first brush roller 601a and the second brush are in a state where the first brush roller 601a is brought into contact with the web V accumulated on the mesh belt 46 by the accumulation unit 400, and the second brush roller 601b is brought into contact with the mesh belt 46.
  • the web V was vibrated by rotating the roller 601b. Due to the applied vibration, the color material contained in the web V is detached. Therefore, the color material contained in the web V can be removed with a simple device configuration. Further, by mounting the separation device 3000 by vibration separation on the dry sheet manufacturing apparatus 100, the sheet S having good whiteness can be manufactured.
  • the separation unit 600 of the separation device 3000 is vibrated using the brush roller 601 as a vibration applying unit, but the separation device 3000a of the sheet manufacturing apparatus 100 according to the present embodiment is provided.
  • the separation unit 600a includes an ultrasonic vibration applying unit 610 as a vibration applying unit, and vibrates the web V using ultrasonic waves.
  • FIG. 7 is a schematic diagram showing the configuration of the separation apparatus according to the present embodiment.
  • the separation device 3000a includes a deposition unit 400, a separation unit 600a, and the like.
  • structures other than the separation part 600a of this embodiment are the same as structures other than the separation part 600 of 1st Embodiment, description is abbreviate
  • the ultrasonic vibration applying unit 610 is an ultrasonic vibration applying unit that applies vibration to the web V.
  • the ultrasonic vibration applying unit 610 is arranged above the mesh belt 46 on the downstream side in the transport direction of the sorting unit 40 so that the tip of the vibration plate 613 is in contact with the web V deposited on the mesh belt 46. ing.
  • the length of the vibration plate 613 in the direction intersecting the web V conveyance direction is set to be the same as or longer than the width of the web V deposited on the mesh belt 46 (dimension in the direction intersecting the conveyance direction). ing.
  • the diaphragm 613 vibrates and vibrates while uniformly contacting the web V in the width direction of the web V on the mesh belt 46 (direction intersecting the transport direction).
  • a platen 615 that supports the mesh belt 46 is provided below the mesh belt 46 facing the diaphragm 613 (on the side opposite to the selection unit 40 side) as necessary. However, it may be provided if necessary and may not be provided.
  • the ultrasonic vibration applying unit 610 may be disposed below the mesh belt 46 (on the side opposite to the sorting unit 40 side) and downstream of the suction unit 48 in the conveyance direction of the web V. In this case, it arrange
  • pulsating vibration is applied to the web V by changing the amplitude of vibration and the period of vibration.
  • driving ON and driving OFF are repeated in the driving control of the piezoelectric element 611 of the ultrasonic vibration applying unit 610 (see FIG. 3).
  • the vibration from the diaphragm 613 is applied or the vibration is stopped, and the pulsating vibration is applied to the web V. Since strong and weak vibration is applied to the web V, the bonding force between the fibers and the color material is further weakened, and the color material can be efficiently removed from the web V.
  • the pulsating vibration applying method by the ultrasonic vibration applying unit 610 is not limited to a pattern in which driving ON and driving OFF are repeated at a constant period, but is a pattern in which driving ON and driving OFF are repeated at an indefinite period. Also good.
  • the excitation force of the ultrasonic vibration applying unit 610 with respect to the web V may be controlled based on the result derived by the deriving unit 130.
  • the driving voltage of the piezoelectric element 611 in the ultrasonic vibration applying unit 610 is controlled based on the ratio of the printing area of the sheet by the deriving unit 130, and the excitation force on the web V is controlled.
  • the amount of the color material derived by the deriving unit 130 is large, that is, when the ratio of the print area is large
  • the web V is compared with when the amount of color material is small, that is, when the ratio of the print area is small.
  • Increase the excitation force to be applied thereby, the color material can be efficiently removed from the web V.
  • the separation device 3000a includes a humidity control unit 200 that controls the humidity (relative humidity) of a space including at least the separation unit 600a (ultrasonic vibration applying unit 610).
  • a humidity control unit 200 that controls the humidity (relative humidity) of a space including at least the separation unit 600a (ultrasonic vibration applying unit 610).
  • the structure and control method of the humidity control part 200 are the same as that of 1st Embodiment, description is abbreviate
  • the ultrasonic vibration applying unit 610 is driven in a state where the tip of the vibration plate 613 is in contact with the web V, and the web V on the mesh belt 46 is vibrated. Thereby, the color material contained in the web V separates from between the fibers. That is, the color material is removed from the web V.
  • the ultrasonic vibration applying unit 610 was driven with the web V deposited on the mesh belt 46 by the deposition unit 400 in contact with the tip of the vibration plate 613 to vibrate the web V. Due to the applied vibration, the color material contained in the web V is detached. Therefore, the color material contained in the web V can be removed with a simple device configuration.
  • the sheet S having good whiteness can also be manufactured by mounting the separation device 3000a of this embodiment in place of the separation device 3000 in the dry sheet manufacturing apparatus 100 (see FIG. 1 of the first embodiment). can do.
  • the separation unit 600 of the separation device 3000 is vibrated in a state where the brush roller 601 as the vibration applying unit is in contact with the web V.
  • the separation unit 600b of the separation device 3000b according to the present embodiment the speaker 621 is provided as a vibration applying unit, and the web V is vibrated without contacting the web V by sound waves emitted from the speaker 621.
  • FIG. 8 is a schematic diagram showing the configuration of the separation apparatus according to the present embodiment.
  • the separation device 3000b includes a deposition unit 400, a separation unit 600b, and the like. Since the configuration other than the separation unit 600b is the same as the configuration other than the separation unit 600 of the first embodiment, the description thereof is omitted.
  • the first speaker 621a disposed to face the web V deposited on the mesh belt 46 and the surface of the mesh belt 46 opposite to the surface on which the web V is deposited are opposed.
  • the second speaker 621b is arranged.
  • the first speaker 621a is disposed above the mesh belt 46 on the downstream side of the sorting unit 40 in the transport direction.
  • the first speaker 621a includes a coil, a magnet, a diaphragm (not shown), and the like, and the first speaker 621a is disposed so that the diaphragm and the web V face each other.
  • the second speaker 621b is disposed below the mesh belt 46 (on the side opposite to the sorting unit 40 side) and downstream of the suction unit 48 in the conveyance direction of the web V.
  • the second speaker 621b includes a coil, a magnet, a diaphragm (not shown), and the like, and the second speaker 621b is disposed so that the diaphragm and the mesh belt 46 face each other.
  • the first speaker 621a and the second speaker 621b are arranged to face each other with the mesh belt 46 and the web V interposed therebetween.
  • the diaphragm shakes and a wave (sound wave) is generated in the air. Then, the web V can be vibrated by the wave generated from the first speaker 621a.
  • the diaphragm shakes and a wave (sound wave) is generated in the air. Then, the mesh belt 46 can be vibrated by the wave emitted from the second speaker 621b. Note that vibration can also be applied to the web V on the mesh belt 46 by the wave of the second speaker 621b.
  • first speaker 621a and the second speaker 621b may be used.
  • a plurality of first speakers 621a or second speakers 621b may be arranged.
  • the separation unit 600b may be controlled so that the vibration applied by the speakers 621 (the first speaker 621a and the second speaker 621b) has a pulsating shape that pulsates.
  • pulsating vibration is applied to the web V by changing the amplitude and period of the wave.
  • the driving ON and the driving OFF are repeated in driving the speaker 621 (see FIG. 3).
  • a wave from the speaker 621 is generated or the wave is stopped, and a pulsating vibration (wave) is applied to the web V. Since strong and weak vibration is applied to the web V, the bonding force between the fibers and the color material is further weakened, and the color material can be efficiently removed from the web V.
  • the pulsating vibration applying method by the speaker 621 is not limited to a pattern in which the driving ON and the driving OFF are repeated at a constant period, and may be a pattern in which the driving ON and the driving OFF are repeated at an indefinite period.
  • the excitation force of the speaker 621 with respect to the web V may be controlled based on the derivation result by the derivation unit 130.
  • the output of the wave generated from the speaker 621 is controlled based on the ratio of the printing area of the sheet by the derivation unit 130, and the excitation force on the web V is controlled.
  • the web V is compared with when the amount of color material is small, that is, when the ratio of the print area is small. Increase the excitation force to be applied. Thereby, the color material can be efficiently removed from the web V.
  • the separation device 3000b includes a humidity control unit 200 that controls the humidity (relative humidity) of the space including at least the separation unit 600b (speaker 621).
  • the humidity control part 200 since the structure and control method of the humidity control part 200 are the same as that of 1st Embodiment, description is abbreviate
  • the speaker 621 (first and second speakers 621a and 621b) is driven to vibrate the web V without contacting the web V. Thereby, the color material contained in the web V separates from between the fibers. That is, the color material is removed from the web V.
  • Vibration is applied to the web V and the mesh belt 46 in a non-contact state by the first speaker 621a and the second speaker 621b. For this reason, it is possible to efficiently remove the color material from the web V while suppressing the charging of the fibers and the color material of the web V.
  • the sheet S having good whiteness can also be manufactured by mounting the separation device 3000b of this embodiment in place of the separation device 3000 in the dry sheet manufacturing apparatus 100 (see FIG. 1 of the first embodiment). can do.
  • the sheet manufacturing apparatus 100 includes any one of the separation apparatuses 3000, 3000a, and 3000b, and is configured to vibrate the web V and remove the color material from the web V.
  • the structure provided with the other separation apparatus may be sufficient.
  • FIG. 9 is a schematic diagram showing the configuration of the sheet manufacturing apparatus according to the present embodiment.
  • the sheet manufacturing apparatus 100 a includes another separating apparatus 2000 in addition to the separating apparatus 3000.
  • the separation device 2000 applies airflow to the deposited web V to remove the color material from the web V.
  • the configuration of the separation device 2000 will be described. Since the configuration other than the separation device 2000 is the same as the configuration of the first embodiment, the description thereof is omitted.
  • the separation device 2000 includes a deposition unit 400 and a separation unit 300. Furthermore, the separation device 2000 of this embodiment includes an image acquisition unit 120, a derivation unit 130, a defibrating unit 20, a humidity control unit 200, and the like. In the present embodiment, the separation unit 300 is disposed on the downstream side in the conveyance direction of the web V of the separation unit 600. Note that the separation unit 300 may be disposed between the selection unit 40 and the separation unit 600.
  • the configurations of the image acquisition unit 120 and the derivation unit 130 are the same as the configurations of the first embodiment, and thus description thereof is omitted.
  • the derivation result by the derivation unit 130 is supplied to the humidity control unit 200, the separation unit 300, and the separation unit 600.
  • the sheet whose image has been read by the image acquisition unit 120 is conveyed to the defibrating unit 20 via the crushing unit 12 and defibrated. Since the structure of the crushing part 12 and the defibrating part 20 is the same as the structure of 1st Embodiment, description is abbreviate
  • omitted (refer FIG. 1).
  • the defibrated material that has been defibrated by the defibrating unit 20 is conveyed to the deposition unit 400.
  • the configuration of the deposition unit 400 is the same as the configuration of the first embodiment, and a description thereof will be omitted.
  • a deposit (web V) is deposited on the mesh belt 46 by the deposition unit 400.
  • the separation unit 300 applies airflow to the web V deposited by the deposition unit 400 and removes the color material from the web V by the airflow. That is, the separation unit 300 of this embodiment includes an airflow separation mechanism.
  • the separation unit 300 includes an airflow ejection unit 301 that ejects an airflow.
  • the airflow injection unit 301 is, for example, an air knife, and injects compressed air obtained by compressing the atmosphere from the injection port 301a.
  • the air knife is effective in generating a high-speed air flow because the cross-sectional area of the communication passage is reduced toward the injection port 301a.
  • the flow velocity of the airflow injected from the airflow injection unit 301 is faster than the airflow generated by the suction unit 48, and a high-speed airflow is injected from the airflow injection unit 301.
  • the airflow injection unit 301 is disposed on the downstream side of the sorting unit 40 in the conveyance direction of the web V and above the deposited web V.
  • the airflow injection unit 301 is disposed so that the injection port 301 a faces the web V deposited on the mesh belt 46.
  • the width of the injection port 301a through which the airflow is ejected is the width of the web V accumulated on the mesh belt 46. Is set to be the same or longer. Thereby, an airflow can be uniformly applied with respect to the width direction (direction which cross
  • a container 311 is disposed below the mesh belt 46 facing the injection port 301a and on which the web V is deposited.
  • the container 311 accommodates the color material removed by the airflow injection unit 301.
  • the web V deposited on the mesh belt 46 includes fibers and coloring materials, but the fibers have a relatively high bonding force between the fibers.
  • the coloring material has a weak binding force with the fiber, and the coloring material is collected with a certain degree of freedom between the fibers. Therefore, when an airflow is applied to the web V from the airflow injection unit 301, the fibers stay on the mesh belt due to the bonding force between the fibers, but the coloring material is detached from the fibers due to the external force due to the airflow. Thereby, the color material contained in the web V is removed. However, some of the coloring material may remain on the web V without being detached. That is, at least a part of the color material included in the web V is removed, and the amount of the color material included in the web V is reduced. The color material detached from the web V falls downward from the mesh belt 46 and is accommodated in the container 311.
  • a pulsating air flow is applied to the web V by changing the flow velocity and flow rate.
  • the drive ON and the drive OFF are repeated in the drive control of the airflow injection unit 301.
  • the airflow is jetted from the airflow jetting unit 301 or the jetting of the airflow stops and the pulsating airflow is applied to the web V.
  • bonding force of a fiber and a coloring material is further weakened, and it can remove a coloring material from the web V efficiently.
  • the pulsating flow injection method from the airflow injection unit 301 is not limited to the injection pattern in which the driving ON and the driving OFF are repeated at a constant cycle shown in the example of FIG. 11, and the driving ON and the driving OFF are repeated at an indefinite cycle. It may be an injection pattern.
  • the flow velocity and flow rate of the airflow injection unit 301 may be controlled based on the derivation result by the derivation unit 130.
  • the flow rate and flow rate of the airflow ejecting unit 301 are controlled based on the ratio of the printing area of the sheet by the deriving unit 130.
  • the flow rate is increased as the ratio of the print area of the sheet increases. Or increase the flow rate.
  • the ratio of the printing area of the sheet is relatively large, the amount of the color material included in the web V is also increased.
  • by increasing the flow velocity of the airflow ejection unit 301 according to this more colors can be obtained. The material can be detached from the web V.
  • the airflow injection unit 301 may be, for example, an axial fan or a crossflow fan in addition to an air knife. In this case as well, the airflow is uniformly applied to the width of the web V in the same manner as described above. Even if it does in this way, the same effect as the above can be acquired.
  • the humidity control unit 200 controls (humidifies) the humidity (relative humidity) of the space including at least the separation unit 300.
  • the humidity (relative humidity) of the space including the separation unit 300 and the separation unit 600 is controlled (humidity control).
  • the structure of the humidity control part 200 is the same as that of the structure of 1st Embodiment, description is abbreviate
  • the humidity control mechanism and control method in the space in the chamber 211 by the humidity control unit 200 are also the same as those in the first embodiment, and the description thereof will be omitted (see FIG. 5).
  • FIG. 11 is a flowchart showing the separation method according to the present embodiment. Since the image acquisition process (S101) to the deposition process (S106) correspond to the image acquisition process (S11) to the deposition process (S16) according to the first embodiment, description thereof is omitted.
  • the first brush roller 601a of the separation unit 600 is rotated in contact with the web V, and the web V on the mesh belt 46 is rotated. Vibrate. Further, the second brush roller 601b is rotated in contact with the mesh belt 46, and the mesh belt 46 and the web V on the mesh belt 46 are vibrated (see FIG. 2A). Thereby, the color material contained in the web V separates from between the fibers. That is, the color material is removed from the web V.
  • the (vibration) separation step (S107) is performed in the chamber 211. That is, it is carried out in an environment where the relative humidity is controlled.
  • the separation portion 300 is used to apply an air flow to the web V on the mesh belt 46.
  • the airflow may be a pulsating flow.
  • the color material contained in the web V separates from between the fibers. That is, the color material is removed from the web V.
  • the (air flow) separation step (S108) is performed in the chamber 211. That is, it is carried out in an environment where the relative humidity is controlled.
  • the separating apparatus 2000 by applying an air flow to the deposited web V, the fibers contained in the web V stay on the mesh belt 46 due to the bonding force between the fibers, but the coloring material has a weak bonding force with the fibers. Detach from the mesh belt 46. Thereby, the color material contained in the web V can be removed with a simple apparatus configuration.
  • the separation apparatus 2000 by airflow separation is mounted, so that the color material removal rate is further increased and the whiteness is good.
  • a sheet S having the following can be manufactured.
  • the separation unit 300 of the separation device 2000 according to the fourth embodiment the airflow is ejected from the airflow injection unit 301 toward the web V.
  • the separation unit 300a of the separation device 2000a according to the present embodiment sucks the web V. Generate airflow.
  • FIG. 12 is a schematic diagram showing the configuration of the separation apparatus according to the present embodiment.
  • the separation device 2000a includes a deposition unit 400, a separation unit 300a, and the like. Since the configuration other than the separation unit 300a is the same as the configuration other than the separation unit 300 of the first embodiment, the description thereof is omitted.
  • the separation unit 300a removes the color material from the web V by applying a negative air flow to the web V deposited by the deposition unit 400.
  • the separation unit 300a is disposed below the mesh belt 46 (on the side opposite to the selection unit 40 side) and downstream of the suction unit 48 in the conveyance direction of the web V. More specifically, the separation unit 600 is disposed on the downstream side in the conveyance direction of the web V.
  • the separation unit 300 a includes a suction device 321 (for example, an axial fan or a cross flow fan), and flows downward from the suction port 321 a of the suction device 321 (from the web V on the mesh belt 46 toward the suction device 321. Airflow). Thereby, the color material in the web V is sucked, and the color material detached from the mesh belt 46 is sucked from the suction port 321a.
  • a suction device 321 for example, an axial fan or a cross flow fan
  • a pulsating air flow may be applied to the web V by changing the flow velocity or the flow rate.
  • the flow rate and flow rate of the aspirator 321 may be controlled based on the derivation result by the derivation unit 130.
  • the flow rate and flow rate of the aspirator 321 are controlled based on the ratio of the printing area of the sheet by the derivation unit 130. In this case, the flow rate is increased as the ratio of the print area of the sheet increases. Or increase the flow rate. In this way, the separation process can be performed more efficiently.
  • the web V deposited by the deposition unit 400 receives a negative pressure by the suction device 321 of the separation unit 300a.
  • the fibers contained in the web V stay on the mesh belt 46 due to the bonding force between the fibers, but the coloring material is detached from the mesh belt 46 because the bonding force with the fibers is weak.
  • the color material contained in the web V can be removed with a simple apparatus configuration.
  • the separation apparatus 2000a by airflow separation is further installed, so that the color material removal rate is further increased and the whiteness is good.
  • a sheet S having the following can be manufactured.
  • FIG. 13A is a schematic diagram illustrating a configuration of a sheet manufacturing apparatus according to the present embodiment
  • FIG. 13B is a schematic diagram illustrating a configuration of a separation apparatus according to the present embodiment.
  • the sheet manufacturing apparatus 100b includes another separating apparatus 1000 in addition to the separating apparatus 3000. A part of the separating apparatus 1000 is provided on the tube 3 between the defibrating unit 20 and the sorting unit 40.
  • Separation apparatus 1000 is an apparatus that separates into a first defibrated material group containing more fibers than color materials and a second defibrated material group containing more color materials than the first defibrated material group. Then, the first defibrated material group separated by the separation device 1000 is transferred toward the sorting unit 40.
  • the second defibrated material group includes only the color material, includes more color material than the fiber, includes more fiber than the color material, but has more color material than the first defibrated material group. There are cases where it is included. And among the defibrated materials, the first defibrated material group with less color material is used as the material of the sheet.
  • the configuration of the separation apparatus 1000 will be described. Since the configuration other than the separation device 1000 is the same as the configuration of the first embodiment, the description thereof is omitted.
  • FIG. 14 is a schematic diagram showing the configuration of the separation apparatus according to the present embodiment.
  • the separation device 1000 includes a charging unit 160, a separation unit 170, and a humidity control unit 200a.
  • the separation apparatus 1000 of the present embodiment includes an image acquisition unit 120, a derivation unit 130, an attachment unit 140, a defibrating unit 20, and the like. Note that the configurations of the image acquisition unit 120 and the derivation unit 130 are the same as the configurations of the first embodiment, and a description thereof will be omitted.
  • the adhering unit 140 adheres the charge control agent to the printed portion of the sheet based on the result derived by the deriving unit 130.
  • the attachment unit 140 of this embodiment attaches a powder charge control agent to the printed portion by electrophotography. That is, the attaching unit 140 forms a uniform charge on the photosensitive drum 141, forms an electrostatic latent image corresponding to the printed portion on the photosensitive drum 141, attaches a charge control agent to the electrostatic latent image, and electrostatically
  • the charge control agent attached to the latent image is transferred to the sheet, and the charge control agent is fixed and fixed (fixed) to the sheet by the fixing device 142.
  • the fixing temperature of the fixing device 142 is set as low as necessary for adhesion.
  • thermoplastic resin is desirable among materials that are easily negatively charged in the triboelectric train.
  • powders such as polyester, polyethylene, polypropylene, and polystyrene are used.
  • the attaching unit 140 may discharge the powder dispersion liquid by an ink jet method and attach it as a charge control agent.
  • the sheet subjected to the adhesion treatment by the adhesion unit 140 is conveyed to the defibrating unit 20 via the crushing unit 12 and defibrated.
  • the structure of the crushing part 12 and the defibrating part 20 is the same as the said structure, description is abbreviate
  • omitted (refer FIG. 1).
  • the charging unit 160 charges a defibrated material containing fibers and color materials.
  • the charging unit 160 of the present embodiment is disposed on a part of the tube 3. That is, the defibrated material discharged from the discharge port 24 of the defibrating unit 20 is charged.
  • the charging unit 160 includes a charging device 163 such as a corotron or a scorotron. When a charging voltage is applied to the defibrated material by the charging device 163, the first defibrated material group including more fibers than the color material in the defibrated material is charged with a weak negative (or uncharged).
  • the second defibrated material group (defibrated material containing a large amount of charge control agent) containing more color material than the first defibrated material group is strongly negatively charged.
  • the charging voltage applied to the defibrated material by the charging device 163 is, for example, ⁇ 1500 volts to ⁇ 4000 volts. Then, the defibrated material (first defibrated material group and second defibrated material group) subjected to the charging process is conveyed to the separation unit 170 via the tube 3.
  • the separation unit 170 is divided into a first defibrated material group containing more fibers than the color material and a second defibrated material group containing more color material than the first defibrated material group according to the charge amount.
  • the separation unit 170 according to this embodiment includes an electrostatic separation mechanism.
  • the second defibrated material group containing more color material than the first defibrated material group is adsorbed by electrostatic force.
  • the separation unit 170 is disposed on the tube 3 between the charging unit 160 and the sorting unit 40.
  • the separation unit 170 includes a plurality of rollers 171, a conveyance belt 172 (electrostatic adsorption belt), and a charging device 173.
  • the conveyor belt 172 is stretched around a plurality of rollers 171 and is rotationally driven by the rollers 171.
  • the conveyor belt 172 is positively charged by a charging device 173 such as a corotron or a scorotron.
  • the charging voltage applied to the transport belt by the charging device 173 is opposite to the charging voltage in the charging unit 160, and is, for example, +1500 volts to +4000 volts.
  • the second defibrated material group that is strongly negatively charged (the defibrated material that contains more coloring material and contains more charge control agent).
  • the material flies toward the positively charged transport belt 172, is adsorbed on the suction surface 172a, and is transported by the transport belt 172.
  • the second defibrated material group is scraped off by the blade 174 that is in contact with the transport belt 172 and is collected in the storage portion 175.
  • the first defibrated material group (defibrated material containing more fibers) that is weakly negative (or uncharged) is adsorbed to the transport belt 172.
  • the first defibrated material group including more fibers than the color material includes the case of only fibers
  • the second defibrated material group including more color materials than the first defibrated material group includes only the color material. Including the case. Accordingly, the case where the fiber and the color material are completely classified in the separation unit 170 is also included.
  • the humidity control unit 200a controls (humidifies) the humidity (relative humidity) of the space including at least the separation unit 170.
  • the humidity control unit 200a includes a chamber 211a and a humidity control unit 201a.
  • the chamber 211a has a partition wall for forming a space.
  • the chamber 211a defines at least the separation unit 170. Further, a space including the charging unit 160 in addition to the separation unit 170 may be partitioned.
  • the chamber 211a is arranged so as to surround a space including the separation unit 170, the charging unit 160, the crushing unit 12, and the defibrating unit 20.
  • the humidity control unit 201a supplies the conditioned air to the space in the chamber 211a.
  • the humidity in the chamber 211a can be controlled by supplying the conditioned air to the space in the chamber 211a.
  • the humidity control unit 201a includes a vaporization unit 202a, a blower unit 203a, and a humidity detection unit 204a.
  • the vaporization unit 202a has a function of evaporating moisture, and, for example, a vaporization type humidification method is applied.
  • the blower unit 203a sucks in air containing the vapor evaporated by the vaporizing unit 202a and exhausts the air from the exhaust port 208a into the chamber 211a.
  • the blower unit 203a includes an impeller that rotates by driving of a motor.
  • the blower unit 203a can suck outside air, and can mix and exhaust the air from the vaporizing section 202a and the outside air into the chamber 211a from the exhaust port 208a.
  • the blower unit 203a is provided with an intake port (not shown) that can open and close the intake port from the outside air, and the amount of outside air taken in can be adjusted.
  • the humidity detector 204a detects the humidity in the chamber 211a and is installed, for example, in the vicinity of the exhaust port 208 of the blower unit 203a.
  • the humidity detector 204a is connected to the derivation unit 130.
  • the humidity control unit 200a can perform humidity control by controlling the drive of the blower unit 203a or changing the amount of outside air taken in. For example, based on the detection result of the humidity detector 204a, when the humidity in the chamber 211a is higher than the predetermined humidity, the intake amount of outside air is increased while the drive of the blower unit 203a is kept constant. Since the humidity of the outside air is lower than the humidity in the chamber 211a, air with low humidity is exhausted from the exhaust port 208a of the blower unit 203a. Thereby, the relative humidity in the chamber 211a can be lowered.
  • the control method of the humidity control part 200a is not specifically limited, You may perform humidity control by drive control of the motor of the blower unit 203a.
  • the relative humidity of the space in the chamber 211a can be arbitrarily controlled by the humidity control unit 200a.
  • the humidity control unit 200a is controlled to set the relative humidity of the space in the chamber 211a to 60% RH or less. In this way, electrostatic separation by the charging unit 160 and the separation unit 170 can be performed efficiently.
  • the relative humidity of the space in the chamber 211a is preferably set to 30% RH or less. More preferably, the relative humidity of the space in the chamber 211a is set to 20% RH or less.
  • the humidity control unit 200a of the present embodiment reduces the humidity of the space in the chamber 211a when the amount of the color material derived by the deriving unit 130 is large, compared to when the amount of the color material is small. That is, the humidity of the space in the chamber 211a is controlled according to the amount of the color material of the supplied sheet. Specifically, using the image data of the sheet read by the image acquisition unit 120, the derivation unit 130 derives the ratio of the print portion (print region) in the sheet. The humidity control unit 200a is controlled and driven based on the derivation result of the derivation unit 130, and controls the humidity in the chamber 211a.
  • FIG. 15 is an explanatory diagram illustrating an example of humidity control according to the present embodiment.
  • the amount of color material derived by the deriving unit 130 when the amount of color material derived by the deriving unit 130 is large, that is, when the printing area is large, the amount of color material is small, that is, when the printing area is small, that is, in the chamber 211a.
  • Reduce the humidity of the space In the example of FIG. 15, four levels of relative humidity control levels are provided. For example, when the ratio of the printing area is less than 10%, the relative humidity of the space in the chamber 211a is controlled to 60% RH or less.
  • the humidity control unit 200a is driven and controlled as described above.
  • the relative humidity of the space in the chamber 211a is controlled to 40% RH or less.
  • the relative humidity of the space in the chamber 211a is controlled to 30% RH or less.
  • region is 50% or more, the relative humidity of the space in the chamber 211a is controlled to 20% RH or less. Since the relative humidity of the space in the chamber 211a is controlled to decrease as the ratio of the printing area increases, electrostatic separation can be performed efficiently.
  • the relative humidity of the space in the chamber 211a is controlled by deriving unit 130, for example, by deriving an average value of the ratios of 10 print areas of a sheet from which an image has been acquired, and based on the average value of the ratios of the print areas.
  • the relative humidity of the space in the chamber 211a can be controlled by controlling the humidity control unit 200a.
  • FIG. 16 is a flowchart showing the separation method according to the present embodiment.
  • the image acquisition step (S201) the image of the sheet supplied from the supply unit 10 by the image acquisition unit 120 is read.
  • the derivation unit 130 derives the amount of the color material included in the sheet. Specifically, a printed part (printed area) and a non-printed part (non-printed area) in the sheet are calculated. Furthermore, the position, size, and shape of the printed portion on the sheet are calculated. Further, the ratio of the printed portion (print area) in the sheet is calculated.
  • the adhesion controller 140 causes the charge control agent to adhere to the printed portion of the sheet based on the derivation result of the derivation unit 130.
  • the relative humidity of the space in the chamber 211a including the separation unit 170 is controlled.
  • the humidity control unit 200a is driven and controlled according to the ratio of the printing area, and the relative humidity of the space in the chamber 211a is controlled to be a desired relative humidity.
  • control humidity adjustment
  • the relative humidity of the space in the chamber 211a decreases as the ratio of the printing area increases (see FIG. 15).
  • the relative humidity of the space in the chamber 211 including the separation unit 600 is controlled based on the derivation result of the derivation unit 130 (see FIG. 2A). Specifically, based on the derivation result of the derivation unit 130, the humidity control unit 200 is driven and controlled in accordance with the ratio of the print area, and the relative humidity of the space in the chamber 211 is controlled to be a desired relative humidity. . In this case, the control (humidity adjustment) is performed so that the relative humidity of the space in the chamber 211 increases as the ratio of the printing area increases (see FIG. 5). In addition, the process order of an adhesion process (S203) and a humidity control process (S204) may be reverse, and may be simultaneous.
  • the sheet to which the charge control agent is attached is cut into strips by the crushing unit 12.
  • the defibrating unit 20 defibrates the fine pieces by unraveling the pieces into individual fibers.
  • the cutting process (S205) and the defibrating process (S206) are performed in the chamber 211a. That is, it is carried out in an environment where the relative humidity is controlled.
  • the defibrated material including the fiber and the color material is charged.
  • the defibrated material is charged by a charging device 163 such as corotron or scorotron.
  • the first defibrated material group containing more fibers than the color material is charged to a weak negative (or uncharged).
  • the second defibrated material group containing more color materials than the first defibrated material group is strongly negatively charged.
  • the separation unit 170 is used to classify into a first defibrated material group and a second defibrated material group.
  • the conveying belt of the separation unit 170 is positively charged by a charging device 173 such as a corotron or a scorotron.
  • a charging device 173 such as a corotron or a scorotron.
  • the second defibrated material group that is strongly negatively charged flies toward the positively charged transport belt 172. It is adsorbed by the adsorption surface 172a and conveyed by the conveyor belt 172.
  • the second defibrated material group is scraped off by the blade 174 that is in contact with the transport belt 172 and is collected in the storage portion 175.
  • the first defibrated material group (defibrated material containing more fibers) that is weakly negative (or uncharged) is adsorbed to the transport belt 172. It is conveyed as it is.
  • the charging step (S207) and the separation step (S208) are performed in the chamber 211a. That is, it is carried out in an environment where the relative humidity is controlled.
  • the web V is deposited on the mesh belt 46 by the deposition unit 400 (see FIG. 2A).
  • the deposition process (S209) is performed in the chamber 211. That is, it is carried out in an environment where the relative humidity is controlled.
  • the web V on the mesh belt 46 is vibrated using the separation unit 600.
  • the vibration may be a pulsation.
  • the color material contained in the web V separates from between the fibers. That is, the color material is removed from the web V.
  • the (vibration) separation step (S210) is performed in the chamber 211. That is, it is carried out in an environment where the relative humidity is controlled.
  • the charged defibrated material is the first defibrated material group and the second defibrated material. Separated into groups. Thereby, electrostatic separation can be performed efficiently.
  • the first defibrated material group containing a large amount of fibers and the first defibrated material group containing more color materials than the first defibrated material group without the need for a large facility for handling a large amount of treated water or the like.
  • the two defibrated material groups can be easily separated.
  • the color material can be efficiently removed by the separation device 1000 and the separation device 3000.
  • the separation apparatus 1000 by electrostatic separation is further mounted, so that the color material removal rate is further increased and a good white color is obtained.
  • the sheet S having a degree can be manufactured.
  • the separation apparatus 1000 of the sixth embodiment the humidity of the space in the chamber 211a is controlled according to the derivation result by the derivation unit 130.
  • charging is performed according to the derivation result by the derivation unit 130.
  • the charging voltage of the unit 160 is controlled.
  • the control of the charging voltage is to increase the charging voltage or charging current of the charging unit 160 when the amount of the color material derived by the deriving unit 130 is large compared to when the amount of the color material is small.
  • a configuration in which the separation device 1000a controls the charging voltage of the charging unit 160 according to the derivation result by the derivation unit 130 will be described.
  • the separation apparatus 1000a since the structure of the sheet manufacturing apparatus provided with the separation apparatus 1000a concerning this embodiment is the same as the structure of the sheet manufacturing apparatus 100b provided with the separation apparatus 1000 concerning 6th Embodiment, in this embodiment, the separation apparatus 1000a is used.
  • the provided sheet manufacturing apparatus will be described with reference to FIGS. 13A and 14, and detailed description of the configuration will be omitted.
  • the amount of the color material included in the sheet is derived by the deriving unit 130 using the image data of the sheet read by the image acquisition unit 120. Specifically, after calculating a printed portion (printed region) and a non-printed portion (non-printed region) in the sheet, the ratio of the printed portion (printed region) in the sheet is derived. Based on the derivation result of the derivation unit 130, the charging voltage of the charging unit 160 (charging device 163) applied to the defibrated material is controlled.
  • FIG. 17 is an explanatory diagram illustrating an example of charging voltage control according to the present embodiment.
  • the charging device 163 is larger when the amount of the color material derived by the deriving unit 130 is large, that is, when the print area is large, compared with when the color material amount is small, that is, when the print area is small. Increase the charging voltage.
  • the charging voltage of the charging device 173 of the separation unit 170 is controlled in response to the control of the charging voltage of the charging device 163 of the charging unit 160.
  • the charging voltage of the charging device 163 is set to ⁇ 1500 volts, and the charging voltage of the charging device 173 is set to +1500 volts. If the printing area ratio is 10% or more and less than 25%, the charging voltage of the charging device 163 is set to -2000 volts, and the charging voltage of the charging device 173 is set to +2000 volts. If the printing area ratio is 25% or more and less than 50%, the charging voltage of the charging device 163 is set to ⁇ 3000 volts, and the charging voltage of the charging device 173 is set to +3000 volts.
  • the charging voltage of the charging device 163 is set to ⁇ 4000 volts, and the charging voltage of the charging device 173 is set to +4000 volts.
  • the charging voltage of the charging device 163 and the charging device 173 is controlled by, for example, deriving an average value of the ratios of 10 printing areas of the sheet from which the image is acquired in the deriving unit 130 and calculating the average value of the ratios of the printing areas.
  • the charging device 163 and the charging device 173 are controlled based on the above.
  • FIG. 18 is a flowchart showing a separation method according to the present embodiment. Since the image acquisition step (S301) to the attachment step (S303) are the same as the image acquisition step (S201) to the attachment step (S203) in the sixth embodiment (see FIG. 16), description thereof will be omitted.
  • the humidity of the space in the chamber 211a is arbitrarily controlled by the humidity control unit 200a.
  • the humidity control unit 200a is controlled to set the relative humidity of the space in the chamber 211a to 60% RH or less.
  • the relative humidity of the space in the chamber 211a is set to 30% RH or less. More preferably, the relative humidity of the space in the chamber 211a is set to 20% RH or less.
  • the relative humidity of the space in the chamber 211 including the separation unit 600 of the separation device 3000 is controlled based on the derivation result of the derivation unit 130 (see FIG. 2A). Specifically, based on the derivation result of the derivation unit 130, the humidity control unit 200 is driven and controlled in accordance with the ratio of the print area, and the relative humidity of the space in the chamber 211 is controlled to be a desired relative humidity. . In this case, the control (humidity adjustment) is performed so that the relative humidity of the space in the chamber 211 increases as the ratio of the printing area increases (see FIG. 5). In addition, the process order of an adhesion process (S303) and a humidity control process (S304) may be reverse, and may be simultaneous.
  • the cutting step (S 305) the sheet to which the charge control agent is attached is cut into strips by the crushing unit 12.
  • the defibrating step (S306) the defibrating unit 20 defibrates the strips by unraveling them into individual fibers.
  • the cutting step (S305) and the defibrating step (S306) are performed in the chamber 211a. That is, it is carried out in an environment where the relative humidity is controlled.
  • the defibrated material including the fibers and the color material is charged.
  • the defibrated material is charged by a charging device 163 such as corotron or scorotron.
  • the charging voltage of the charging device 163 of the charging unit 160 is controlled based on the derived result.
  • the charging voltage to be applied is increased as the print area ratio increases (see FIG. 17).
  • the second defibrated material group (defibrated material containing a large amount of charge control agent) containing more color material than the first defibrated material group is strongly negatively charged.
  • the charging step (S307) is performed in the chamber 211a. That is, it is carried out in an environment where the relative humidity is controlled.
  • the separation unit 170 is used to classify into a first defibrated material group and a second defibrated material group.
  • the conveying belt of the separation unit 170 is positively charged by a charging device 173 such as a corotron or a scorotron.
  • the charging voltage of the charging device 173 is controlled based on the derived result. In this case, the charging voltage to be applied is increased as the ratio of the printing area increases corresponding to the control of the charging device 163 (see FIG. 17).
  • the second defibrated material group that is strongly negatively charged (the defibrated material containing more coloring material) flies toward the positively charged transport belt 172. It is adsorbed by the adsorption surface 172a and conveyed by the conveyor belt 172. Then, the second defibrated material group is scraped off by the blade 174 that is in contact with the transport belt 172 and is collected in the storage portion 175.
  • the first defibrated material group (defibrated material containing more fibers) that is weakly negative (or uncharged) is adsorbed to the transport belt 172. It is conveyed as it is.
  • the (electrostatic) separation step (S308) is performed in the chamber 211a. That is, it is carried out in an environment where the relative humidity is controlled.
  • the web V is deposited on the mesh belt 46 by the deposition unit 400 (see FIG. 2A).
  • the deposition step (S309) is performed in the chamber 211. That is, it is carried out in an environment where the relative humidity is controlled.
  • the web V on the mesh belt 46 is vibrated using the separation unit 600.
  • the vibration may be a pulsation.
  • the color material contained in the web V separates from between the fibers. That is, the color material is removed from the web V.
  • the (vibration) separation step (S310) is performed in the chamber 211. That is, it is carried out in an environment where the relative humidity is controlled.
  • the charging devices 163 and 173 are controlled so that the charging voltage becomes larger than when the amount of the color material is small. Accordingly, the defibrated material is appropriately charged, so that the separation process can be executed efficiently.
  • FIG. 19 is a schematic diagram showing the configuration of the sheet manufacturing apparatus according to the present embodiment.
  • FIG. 20 is a schematic diagram showing the configuration of the separation apparatus according to this embodiment.
  • the sheet manufacturing apparatus 100 c charges the defibrated material, removes the color material from the defibrated material, and applies an air current to the deposited web V, and the color material from the web V And a separating device 3000 that vibrates the deposited web V and removes the color material from the web V.
  • the separation unit 300 of the separation device 2000 and the separation unit 600 of the separation device 3000 are disposed in the chamber 211.
  • each separation apparatus 1000, 2000, 3000 is the same as that of the said embodiment, description is abbreviate
  • 19 and 20 show a configuration in which the separation unit 300 of the separation device 2000 is arranged on the downstream side in the conveyance direction of the web V of the separation unit 600 of the separation device 3000.
  • the separation unit 600 of the device 3000 may be arranged on the downstream side in the conveyance direction of the web V of the separation unit 300 of the separation device 2000.
  • FIG. 21 is a flowchart showing the separation method according to this embodiment.
  • the color material is removed from the charged defibrated material, and the web V is deposited on the mesh belt 46 in the deposition step (S409).
  • the web V deposited in the (vibration) separation step (S410) is vibrated, the coloring material is removed from the web V, and an air flow is applied to the web V deposited in the (air flow) separation step (S411). Remove the color material from the web V.
  • the image acquisition process (S401) to the (vibration) separation process (S410) are the same as the image acquisition process (S201) to the (vibration) separation process (S210) of the sixth embodiment (see FIG. 16). Is omitted. Further, the (air flow) separation step (S411) is the same as the (air flow) separation step (S108) of the fourth embodiment (see FIG. 11), and thus the description thereof is omitted.
  • the separation device 1000, the separation device 2000, and the separation device 3000 can efficiently remove the color material from the defibrated material and the web V. Further, in the dry sheet manufacturing apparatus 100c, in addition to the separation apparatus 1000 that charges and separates the defibrated material, a separation apparatus 2000 by airflow separation and a separation apparatus 3000 by vibration separation are mounted, so that the color material is further separated. The removal rate is increased, and a sheet S having good whiteness can be manufactured.
  • FIG. 22 is a schematic diagram showing the configuration of the sheet manufacturing apparatus according to the present embodiment.
  • the sheet manufacturing apparatus 100 ⁇ / b> A includes a supply unit 10, a manufacturing unit 102, and a control unit 104.
  • the manufacturing unit 102 manufactures a sheet.
  • the manufacturing unit 102 includes a crushing unit 12, a defibrating unit 20, a sorting unit 40, a first web forming unit 45, a rotating body 49, a mixing unit 50, a depositing unit 60, and a second web forming unit. 70, a sheet forming unit 80, and a cutting unit 90.
  • the sheet manufacturing apparatus 100A includes a separation device 2000. Note that the configuration other than that provided with the separation device 2000 instead of the separation device 3000 is the same as the configuration of the first embodiment, and a description thereof will be omitted.
  • FIG. 23 is a schematic diagram showing the configuration of the separation apparatus according to this embodiment.
  • the separation device 2000 includes a deposition unit 400 and a separation unit 300.
  • the separation device 2000 of this embodiment includes an image acquisition unit 120, a derivation unit 130, a defibrating unit 20, a humidity control unit 200, and the like. Further, since the configuration of the separation device 2000 is the same as the configuration of the fourth embodiment, detailed description of each component will be omitted.
  • the derivation result by the derivation unit 130 is supplied to the humidity control unit 200 and the separation unit 300. Since the deriving unit 130 has a function of controlling each unit, the control unit 104 (see FIG. 22) may be used instead of the deriving unit 130.
  • the humidity control unit 200 controls (humidifies) the humidity (relative humidity) of the space including at least the separation unit 300.
  • the humidity control unit 200 includes a chamber 211 and a humidity control unit 201.
  • the chamber 211 has a partition wall for forming a space.
  • the chamber 211 defines at least the separation unit 300.
  • the chamber 211 is disposed so as to surround the space including the separation unit 300 and the deposition unit 400.
  • the relative humidity of the space in the chamber 211 can be arbitrarily controlled by the humidity control unit 200.
  • the humidity control unit 200 is controlled to set the relative humidity of the space in the chamber 211 to 55% RH or more.
  • the relative humidity of the space in the chamber 211 is preferably set to 60% RH or higher. More preferably, the relative humidity of the space in the chamber 211 is set to 65% RH or more.
  • FIG. 24 is a flowchart showing the separation method according to the present embodiment.
  • a defibrated material containing fibers and color materials is deposited (deposition step (S506)), an airflow is applied to the deposited web V, and the airflow is applied.
  • the color material is removed from the web V (separation step (S507)). Since the image acquisition process (S501) to the deposition process (S506) are the same as the image acquisition process (S11) to the deposition process (S16) of the first embodiment, the description thereof is omitted. This will be specifically described below.
  • the separation step (S507) following the deposition step (S506) from the image acquisition step (S501), an air flow is applied to the web V on the mesh belt 46 using the separation unit 300.
  • the airflow may be a pulsating flow.
  • the color material contained in the web V separates from between the fibers. That is, the color material is removed from the web V.
  • the separation step (S507) is performed in the chamber 211. That is, it is carried out in an environment where the relative humidity is controlled.
  • the fibers contained in the web V stay on the mesh belt 46 due to the bonding force between the fibers, but the coloring material is detached from the mesh belt 46 because the bonding force with the fibers is weak. Release. Thereby, the color material contained in the web V can be removed with a simple apparatus configuration. Moreover, the sheet
  • the separation unit 300 of the separation device 2000 the airflow is ejected from the airflow ejection unit 301 toward the web V.
  • the separation unit 300a of the separation device 2000a provided in the sheet manufacturing apparatus 100A according to the present embodiment. Then, the airflow sucked with respect to the web V is generated.
  • FIG. 25 is a schematic diagram showing the configuration of the separation apparatus according to the present embodiment.
  • the separation device 2000a includes a deposition unit 400, a separation unit 300a, and the like.
  • the configuration of the separation unit 300a is the same as the configuration of the fifth embodiment, and the configuration other than the separation unit 300a is the same as the configuration of the ninth embodiment, and thus the description thereof is omitted.
  • the web V deposited by the deposition unit 400 is subjected to a negative pressure by the suction device 321 of the separation unit 300a.
  • the fibers contained in the web V stay on the mesh belt 46 due to the bonding force between the fibers, but the coloring material is detached from the mesh belt 46 because the bonding force with the fibers is weak.
  • the color material contained in the web V can be removed with a simple apparatus configuration.
  • the separation device 2000a of the present embodiment may be mounted on the sheet manufacturing apparatus 100A of the ninth embodiment. If it does in this way, the sheet
  • any one of the separation apparatuses 2000 and 2000a is provided, and an airflow is applied to the deposited web V to remove the color material from the web V.
  • a configuration including another separation device may be used.
  • the separation device 2000 that separates the web V by applying an air current and the separation device 3000 that uses vibration separation are mounted to further remove the color material. The rate is increased, and the sheet S having good whiteness can be manufactured.
  • the web V is vibrated using the brush roller 601 as the vibration application unit.
  • the separation unit 600a of the separation device 3000a according to the present embodiment as the vibration application unit.
  • the ultrasonic vibration applying unit 610 is provided, and the web V is vibrated using ultrasonic waves.
  • FIG. 26 is a schematic diagram showing the configuration of the separation apparatus according to this embodiment.
  • the separation device 3000a includes a deposition unit 400, an ultrasonic vibration applying unit 610, and the like.
  • the configuration of the ultrasonic vibration applying unit 610 is the same as the configuration of the second embodiment, and the configuration other than the ultrasonic vibration applying unit 610 is the same as the configuration of the ninth embodiment, and thus the description thereof is omitted.
  • the ultrasonic vibration applying unit 610 is driven in a state where the tip of the vibration plate 613 is in contact with the web V, and the web V on the mesh belt 46 is vibrated. Thereby, the color material contained in the web V separates from between the fibers. That is, the color material is removed from the web V.
  • the (vibration) separation step (S607) is performed in the chamber 211. That is, it is carried out in an environment where the relative humidity is controlled.
  • the separation portion 300 is used to apply an air flow to the web V on the mesh belt 46.
  • the airflow may be a pulsating flow.
  • the color material contained in the web V separates from between the fibers. That is, the color material is removed from the web V.
  • the (air flow) separation step (S608) is performed in the chamber 211. That is, it is carried out in an environment where the relative humidity is controlled.
  • the web V was vibrated by driving the ultrasonic vibration applying unit 610 with the web V accumulated on the mesh belt 46 by the accumulation unit 400 in contact with the tip of the vibration plate 613. Due to the applied vibration, the color material contained in the web V is detached. Therefore, the color material contained in the web V can be removed with a simple device configuration. Further, in the dry sheet manufacturing apparatus 100Aa, in addition to the separation apparatus 2000 that separates the web V by applying an air current, the separation apparatus 3000a by vibration separation is mounted, thereby further improving the color material removal rate and improving the whiteness. The sheet S having a degree can be manufactured.
  • the separation unit 600 of the separation device 3000 according to the fourth embodiment the web V is vibrated in a state where the brush roller 601 as the vibration applying unit is in contact with the web V.
  • the separation unit 600b of the separation device 3000b according to the present embodiment the speaker 621 is provided as a vibration applying unit, and the web V is vibrated without contacting the web V by sound waves emitted from the speaker 621.
  • FIG. 28 is a schematic diagram showing the configuration of the separation apparatus according to this embodiment.
  • the separation device 3000b includes a deposition unit 400, a separation unit 600b, and the like. Note that the configuration of the separation unit 600b is the same as the configuration of the third embodiment, and the configuration other than the separation unit 600b is the same as the configuration of the eleventh embodiment, and a description thereof will be omitted.
  • the speaker 621 (first and second speakers 621a and 621b) is driven to vibrate the web V without contacting the web V. Thereby, the color material contained in the web V separates from between the fibers. That is, the color material is removed from the web V.
  • the (vibration) separation step (S607) is performed in the chamber 211. That is, it is carried out in an environment where the relative humidity is controlled.
  • the separation portion 300 is used to apply an air flow to the web V on the mesh belt 46.
  • the airflow may be a pulsating flow.
  • the color material contained in the web V separates from between the fibers. That is, the color material is removed from the web V.
  • the (air flow) separation step (S608) is performed in the chamber 211. That is, it is carried out in an environment where the relative humidity is controlled.
  • the separation device 3000b vibration is applied to the web V and the mesh belt 46 in a non-contact state by the first and second speakers 621a and 621b. For this reason, it is possible to efficiently remove the color material from the web V while suppressing the charging of the fibers and the color material of the web V. Further, in the dry sheet manufacturing apparatus 100Aa, in addition to the separation apparatus 2000 that separates the web V by applying an air current, the separation apparatus 3000b by vibration separation is mounted, so that the removal of the coloring material is further increased and the whiteness is good. A sheet S having the following can be manufactured.
  • FIG. 29A is a schematic diagram illustrating a configuration of a sheet manufacturing apparatus according to the present embodiment
  • FIG. 29B is a schematic diagram illustrating a configuration of a separation apparatus according to the present embodiment.
  • the sheet manufacturing apparatus 100Ab includes a separating apparatus 1000 in addition to the separating apparatus 2000.
  • the configuration of the separation device 1000 and the humidity control are the same as those in the sixth embodiment (see FIG. 14), and the configuration other than the separation device 1000 is the same as the configuration in the ninth embodiment (see FIG. 22). Is omitted.
  • FIG. 30 is a flowchart showing the separation method according to the present embodiment. Since the image acquisition step (S701) to the attachment step (S703) are the same as the image acquisition step (S201) to the (vibration) attachment step (S203) of the sixth embodiment (see FIG. 16), description thereof is omitted. .
  • the relative humidity of the space in the chamber 211a including the separation unit 170 is controlled based on the derivation result of the derivation unit 130. Specifically, based on the derivation result of the derivation unit 130, the humidity control unit 200a is driven and controlled according to the ratio of the printing area, and the relative humidity of the space in the chamber 211a is controlled to be a desired relative humidity. . In this case, control (humidity adjustment) is performed so that the relative humidity of the space in the chamber 211a decreases as the ratio of the printing area increases (see FIG. 15).
  • the relative humidity of the space in the chamber 211 including the separation unit 300 is controlled based on the derivation result of the derivation unit 130. Specifically, based on the derivation result of the derivation unit 130, the humidity control unit 200 is driven and controlled in accordance with the ratio of the print area, and the relative humidity of the space in the chamber 211 is controlled to be a desired relative humidity. . In this case, the control (humidity adjustment) is performed so that the relative humidity of the space in the chamber 211 increases as the ratio of the printing area increases (see FIG. 5).
  • the process order of an adhesion process (S703) and a humidity control process (S704) may be reverse, and may be simultaneous.
  • the air flow is applied to the web V on the mesh belt 46 using the separation unit 300.
  • the airflow may be a pulsating flow.
  • the color material contained in the web V separates from between the fibers. That is, the color material is removed from the web V.
  • the (air flow) separation step (S710) is performed in the chamber 211. That is, it is carried out in an environment where the relative humidity is controlled.
  • the charged defibrated material is the first defibrated material group and the second defibrated material group. And separated. Thereby, electrostatic separation can be performed efficiently.
  • the two defibrated material groups can be easily separated.
  • the color material can be efficiently removed by the separation device 1000 and the separation device 2000.
  • the separation apparatus 1000 by electrostatic separation is mounted, and the color material removal rate is further improved. A sheet S having whiteness can be produced.
  • the sheet manufacturing apparatus 100Ab of the present embodiment includes another separating apparatus 1000a in addition to the separating apparatus 2000.
  • the configuration of the separation device 1000a and the humidity control of the present embodiment are the same as those of the seventh embodiment, and the configuration other than the separation device 1000a is the same as the configuration of the ninth embodiment (see FIG. 22). Omitted.
  • FIG. 31 is a flowchart showing the separation method according to the present embodiment. Since the image acquisition step (S801) to the attachment step (S803) are the same as the image acquisition step (S301) to the (vibration) attachment step (S303) of the seventh embodiment (see FIG. 18), description thereof is omitted. .
  • the humidity of the space in the chamber 211a is arbitrarily controlled by the humidity control unit 200a.
  • the humidity control unit 200a is controlled to set the relative humidity of the space in the chamber 211a to 60% RH or less.
  • the relative humidity of the space in the chamber 211a is set to 30% RH or less. More preferably, the relative humidity of the space in the chamber 211a is set to 20% RH or less.
  • the relative humidity of the space in the chamber 211 including the separation unit 300 is controlled based on the derivation result of the derivation unit 130.
  • the humidity control unit 200 is driven and controlled according to the ratio of the print area based on the derivation result of the derivation unit 130 so that the relative humidity of the space in the chamber 211 becomes a desired relative humidity.
  • the control humidity adjustment
  • the control is performed so that the relative humidity of the space in the chamber 211 increases as the ratio of the printing area increases (see FIG. 5).
  • the process order of an adhesion process (S803) and a humidity control process (S804) may be reverse, and may be simultaneous.
  • the separation portion 300 is used to apply an air flow to the web V on the mesh belt 46.
  • the airflow may be a pulsating flow.
  • the color material contained in the web V separates from between the fibers. That is, the color material is removed from the web V.
  • the (air flow) separation step (S810) is performed in the chamber 211. That is, it is carried out in an environment where the relative humidity is controlled.
  • the charging devices 163 and 173 are controlled so that the charging voltage becomes larger than when the amount of the color material is small. Accordingly, the defibrated material is appropriately charged, so that the separation process can be executed efficiently.
  • the dry sheet manufacturing apparatus 100A includes a separation apparatus 1000 that charges and separates defibrated material in addition to the separation apparatus 2000 by airflow separation. By mounting the separation device 3000 by vibration separation, the color material removal rate is further increased, and the sheet S having good whiteness can be manufactured.
  • FIG. 32 is a schematic diagram illustrating the configuration of the sheet manufacturing apparatus according to the present embodiment.
  • the sheet manufacturing apparatus 100B includes a supply unit 10, a manufacturing unit 102, and a control unit 104.
  • the manufacturing unit 102 manufactures a sheet.
  • the manufacturing unit 102 includes a crushing unit 12, a defibrating unit 20, a sorting unit 40, a first web forming unit 45, a rotating body 49, a mixing unit 50, a depositing unit 60, and a second web forming unit. 70, a sheet forming unit 80, and a cutting unit 90.
  • the sheet manufacturing apparatus 100B includes a separation apparatus 1000. Since the configuration other than the separation device 1000 is the same as the configuration other than the separation device 3000 of the first embodiment, the description thereof is omitted.
  • the detailed configuration and humidity control of the separation apparatus 1000 are the same as the configuration (see FIG. 14) and the humidity control (see FIG. 15) shown in the sixth embodiment, and thus the description thereof is omitted.
  • FIG. 33 is a flowchart showing a separation method according to the present embodiment.
  • the separation method of the present embodiment charges a defibrated material including fibers and color materials (charging step (S917)), and includes more fibers than color materials depending on the amount of charge. Separating into a first defibrated material group and a second defibrated material group containing more color material than the first defibrated material group (separation step (S918)), and controls the humidity of at least the space to be separated (Humidity adjustment step (S914)). Since the image acquisition step (S911) to the attachment step (S913) are the same as the image acquisition step (S201) to the attachment step (S203) in the sixth embodiment (see FIG. 16), description thereof will be omitted. This will be specifically described below.
  • the adhesion unit 140 causes the charge control agent to adhere to the printed portion of the sheet based on the derivation result of the derivation unit 130.
  • the attaching means for example, an electrophotographic method is used.
  • the charge control agent a thermoplastic resin is desirable among materials that are easily negatively charged in the triboelectric train. For example, powders such as polyester, polyethylene, polypropylene, and polystyrene are used.
  • the relative humidity of the space in the chamber 211 including the separation unit 170 is controlled based on the derivation result of the derivation unit 130. Specifically, based on the derivation result of the derivation unit 130, the humidity control unit 200a is driven and controlled in accordance with the ratio of the printing area, and the relative humidity of the space in the chamber 211 is controlled to be a desired relative humidity. . In this case, the control (humidity control) is performed so that the relative humidity of the space in the chamber 211 decreases as the ratio of the printing area increases (see FIG. 15). In addition, the process order of an adhesion process (S913) and a humidity control process (S914) may be reverse, and may be simultaneous.
  • the charged defibrated material is separated into the first defibrated material group and the second defibrated material group. .
  • electrostatic separation can be performed efficiently.
  • the first defibrated material group containing a large amount of fibers and the first defibrated material group containing more color materials than the first defibrated material group without the need for a large facility for handling a large amount of treated water or the like.
  • the two defibrated material groups can be easily separated. Further, by mounting the separation apparatus 1000 by electrostatic separation on the dry sheet manufacturing apparatus 100B, the sheet S having good whiteness can be manufactured.
  • the separation apparatus 1000 of the fifteenth embodiment the humidity of the space in the chamber 211 is controlled according to the result of derivation by the derivation unit 130, but in the separation apparatus 1000a of this embodiment, charging is performed according to the result of derivation by the derivation part 130.
  • the charging voltage of the unit 160 is controlled.
  • the configuration of the separation apparatus 1000a of the present embodiment is the same as the configuration of the separation apparatus 1000 of the fifteenth embodiment, and a description thereof will be omitted.
  • the charging voltage control according to the present embodiment is the same as the charging voltage control (see FIG. 17) of the separation apparatus 1000a according to the nineteenth embodiment, so that the description thereof is omitted.
  • FIG. 34 is a flowchart showing the separation method according to the present embodiment. Since the image acquisition step (S921) to the attachment step (S923) are the same as the image acquisition step (S301) to the attachment step (S303) in the nineteenth embodiment (see FIG. 18), description thereof will be omitted.
  • the humidity adjustment unit 200a is controlled to set the relative humidity of the space in the chamber 211 to 60% RH or less.
  • the relative humidity of the space in the chamber 211 is preferably set to 30% RH or less. More preferably, the relative humidity of the space in the chamber 211 is set to 20% RH or less.
  • the charging devices 163 and 173 are controlled so that the charging voltage becomes larger than when the amount of the color material is small. Accordingly, the defibrated material is appropriately charged, so that the separation process can be executed efficiently.
  • the separators 1000 and 1000a are provided to charge the defibrated material and remove the color material from the defibrated material, but further include other separating devices. It may be a configuration.
  • the sheet manufacturing apparatus 100Ab described in the thirteenth embodiment includes a separation apparatus 1000 and a separation apparatus 2000 (see FIG. 29A).
  • the airflow is ejected from the airflow injection unit 301 toward the web V.
  • the separation unit 300a of the separation device 2000a of the present embodiment sucks the web V. Generate airflow.
  • FIG. 35 is a schematic diagram showing the configuration of the separation apparatus according to the present embodiment.
  • the separation device 2000a includes a deposition unit 400, a separation unit 300a, and the like.
  • the configuration of the separation unit 300a is the same as the configuration of the tenth embodiment, and the configuration other than the separation unit 300a is the same as the configuration other than the separation unit 300 of the fifteenth embodiment, and thus the description thereof is omitted.
  • the separation device 2000a the web V deposited by the deposition unit 400 receives a negative pressure by the suction device 321 of the separation unit 300a. At this time, the fibers contained in the web V stay on the mesh belt 46 due to the bonding force between the fibers, but the coloring material is detached from the mesh belt 46 because the bonding force with the fibers is weak. Thereby, the color material contained in the web V can be removed with a simple apparatus configuration. Further, the separation device 2000a of the present embodiment may be mounted on the sheet manufacturing apparatus 100Ba. If it does in this way, the sheet
  • the separators 1000 and 1000a are provided to charge the defibrated material and remove the color material from the web V.
  • the sheet manufacturing apparatus 100B includes another separator. It may be a configuration.
  • the sheet manufacturing apparatus 100b described in the sixth embodiment includes a separation apparatus 1000 and a separation apparatus 3000 (see FIG. 13A).
  • the web V is vibrated using the brush roller 601 as the vibration applying unit, but the separation of the separation device 3000a provided in the sheet manufacturing apparatus 100Bb of the present embodiment.
  • the unit 600a includes an ultrasonic vibration applying unit 610 as a vibration applying unit, and vibrates the web V using ultrasonic waves.
  • FIG. 36 is a schematic diagram showing the configuration of the separation apparatus according to this embodiment.
  • the separation device 3000a includes a deposition unit 400, a separation unit 600a, and the like.
  • the configuration of the separation unit 600a is the same as the configuration of the second embodiment, and the configuration other than the separation unit 600a is the same as the configuration other than the separation unit 600 of the sixth embodiment, and thus description thereof is omitted.
  • the ultrasonic vibration applying unit 610 is driven in a state where the tip of the vibration plate 613 is in contact with the web V, and the web V on the mesh belt 46 is vibrated. Thereby, the color material contained in the web V separates from between the fibers. That is, the color material is removed from the web V.
  • the web V was vibrated by driving the ultrasonic vibration applying unit 610 with the web V accumulated on the mesh belt 46 by the accumulation unit 400 in contact with the tip of the vibration plate 613. Due to the applied vibration, the color material contained in the web V is detached. Therefore, the color material contained in the web V can be removed with a simple device configuration. Further, in the dry sheet manufacturing apparatus 100Bb, in addition to the separation apparatus 1000 that charges and separates the defibrated material, the separation apparatus 3000a by vibration separation is mounted, so that the color material removal rate is further increased and a good white color is obtained. The sheet S having a degree can be manufactured.
  • the separation unit 600 of the separation device 3000 is vibrated in a state where the brush roller 601 as the vibration applying unit is in contact with the web V.
  • the separation unit 600b of the separation device 3000b according to the present embodiment the speaker 621 is provided as a vibration applying unit, and the web V is vibrated without contacting the web V by sound waves emitted from the speaker 621.
  • FIG. 37 is a schematic diagram showing the configuration of the separation apparatus according to this embodiment.
  • the separation device 3000b includes a deposition unit 400, a separation unit 600b, and the like.
  • the configuration of the separation unit 600b is the same as the configuration of the third embodiment, and the configuration other than the separation unit 600b is the same as the configuration other than the separation unit 600 of the sixth embodiment, and thus description thereof is omitted.
  • the speaker 621 (first and second speakers 621a, 621b) is driven to vibrate the web V without contacting the web V. Thereby, the color material contained in the web V separates from between the fibers. That is, the color material is removed from the web V.
  • the separation device 3000b vibration is applied to the web V and the mesh belt 46 in a non-contact state by the first and second speakers 621a and 621b. For this reason, it is possible to efficiently remove the color material from the web V while suppressing the charging of the fibers and the color material of the web V. Further, in the dry sheet manufacturing apparatus 100Bb, in addition to the separation apparatus 1000 that charges and separates the defibrated material, the separation apparatus 3000b by vibration separation is mounted, thereby further increasing the color material removal rate and improving the whiteness. The sheet S having a degree can be manufactured.
  • FIG. 38 is a schematic diagram showing a configuration of a separation apparatus according to this modification.
  • the separation device 3000c includes an attachment portion 140.
  • the adhering unit 140 is disposed on a sheet conveyance path between the image acquisition unit 120 and the crushing unit 12.
  • the adhering portion 140 is for adhering the charge suppressing agent to the supplied sheet.
  • the charge suppressing agent is, for example, water or an aqueous solution.
  • the attachment unit 140 includes an ink jet head 143 (discharge device), and discharges and adheres the antistatic solution onto the sheet surface by the ink jet head.
  • an atomizer or the like may be used in addition to the ink jet method. Then, the sheet to which the antistatic solution is attached is conveyed to the crushing unit 12. In this way, since the sheet is supplied in a wet state, the binding force due to static electricity between the fibers and the color material in the web V is weakened. Thereby, the separation process can be executed efficiently.
  • an inexpensive material such as water or an aqueous solution can be used as the charge control agent. For this reason, the cost concerning a separation process can be reduced.
  • the adhesion amount of the charge inhibitor to the sheet may be controlled according to the ratio of the print area. For example, the amount of adhesion is controlled to increase as the ratio of the printing area increases. In this way, the separation process can be executed more efficiently. Moreover, you may provide the adhesion part 140 in 2nd and 3rd embodiment.
  • FIG. 39 is a schematic diagram showing a configuration of a separation apparatus according to this modification.
  • the separation device 2000b includes an attachment portion 140.
  • the adhering unit 140 is disposed on a sheet conveyance path between the image acquisition unit 120 and the crushing unit 12. Since the adhesion part 140 and the adhesion amount control of the charge suppressing agent are the same as in the first modification, the description thereof is omitted.
  • FIG. 40 is a partial schematic diagram illustrating a configuration of a sheet manufacturing apparatus according to this modification.
  • the sheet manufacturing apparatus 100Bc of the present modification includes an airflow classification device 30 between the defibrating unit 20 and the sorting unit 40 in the sheet manufacturing apparatus 100B according to the fifteenth embodiment.
  • the defibrating unit 20 and the airflow classifying device 30 are connected by a pipe 36, and the airflow classifying device 30 and the sorting unit 40 are connected by a pipe 37.
  • the defibrated material defibrated by the defibrating unit 20 is introduced from the introduction port 31 of the air flow classification device 30.
  • the defibrated material introduced from the introduction port 51 changes into a circumferential motion in the airflow classifying device 30, is subjected to centrifugal force, and the fibers are entangled and increased due to a synergistic effect with the airflow, whereby the color material and the foreign matter are separated.
  • the separating apparatus 1000 is disposed in the middle of the pipe 36 or the pipe 37.
  • the configuration of the separation apparatus 1000 is the same as the configuration according to the fifteenth embodiment. In this way, the fiber and the color material can be more efficiently separated by the synergistic effect of the airflow classifying device 30 and the separating device 1000.
  • the fiber and the color material can be more efficiently separated by the synergistic effect of the airflow classifying device and the separating device 3000 (3000a, 3000b) and the synergistic effect of the airflow classifying device and the separating device 2000 (2000a). .
  • the airflow injection unit 301 of the ninth embodiment may be configured to inject air whose humidity is controlled by the humidity control unit 200. If it does in this way, when air current is applied to web V, the electrification friction of the fiber and color material in web V can be reduced.
  • the first defibrated material group containing more fibers than the color material is negatively charged and more color materials than the first defibrated material group.
  • the 2nd defibrated material group containing was charged negatively strongly, it is not limited to this.
  • the first defibrated material group containing more fibers than the color material is weakly positively charged, and the second defibrated material group containing more color material than the first defibrated material group is strongly charged positively. You may let them.
  • the polarity of the charging voltage applied to the defibrated material in the charging device 163 may be reversed. And what is necessary is just to negatively charge the conveyance belt in the separation part 170, and to adsorb
  • the charge control agent is attached to the printed portion of the sheet by the electrophotographic method, but is not limited thereto.
  • the charge control agent may be attached by an ink jet method.
  • the attachment unit 140 discharges and attaches the charge control solution to the printed portion of the sheet by the ink jet head (discharge device).
  • the charge control solution is a dispersion in which a charge control agent is dispersed in a solvent.
  • a thermoplastic resin is desirable among materials that are easily negatively charged in the triboelectric train as in the above-described embodiment, and powders such as polyester, polyethylene, polypropylene, and polystyrene are used, for example. Even if it does in this way, the same effect as the above can be acquired.
  • the charge control agent is attached to the printed part of the sheet, but the present invention is not limited to this.
  • a charge suppressing agent that suppresses charging may be attached to a non-printed portion of the sheet. Even if it does in this way, since the electrical potential difference of a printing part and a non-printing part arises, a 1st defibrated material group and a 2nd defibrated material group can be isolate
  • an inexpensive material such as water or an aqueous solution can be used as the charge control agent. For this reason, the cost concerning a separation process, a sheet manufacturing process, etc. can be reduced.
  • the humidity in one chamber 211 is controlled (humidity controlled), but the present invention is not limited to this.
  • the charging unit 160, the separation unit 170, the crushing unit 12, and the defibrating unit 20 may be provided with chambers, and the humidity in each chamber may be controlled (humidity controlled). In this way, the space defined by the chamber can be narrowed, so that the humidity in the space can be controlled efficiently.
  • the charging unit 160 is provided, but this may be omitted. Even if it does in this way, since triboelectric charge arises in the defibrating process in the defibrating unit 20, it can be electrostatically separated into the first defibrated material group and the second defibrated material group.
  • the configuration of the separation device 1000 can be configured more simply.
  • the defibrating unit 20 has a function as a charging unit that charges the defibrated material together with the defibrating process.
  • Aspirator, 400 Deposition unit, 600, 600a, 600b ... Separation unit, 601 ... Brush roller, 601a ... First brush roller, 601b ... Second Brush roller, 610, ultrasonic vibration applying unit, 621, speaker, 621a, first speaker, 621b, second speaker, 000,2000,2000a, 3000a, 3000b ... separation device.

Landscapes

  • Dry Formation Of Fiberboard And The Like (AREA)

Abstract

Grâce à la présente invention, des fibres et un matériau colorant sont facilement séparés à l'aide d'une configuration de dispositif simple qui comprend un moyen conférant des vibrations. Le dispositif de séparation comprend une unité d'accumulation pour accumuler un matériau défibré contenant des fibres et un matériau colorant, et une unité de séparation pour faire vibrer le matériau de type bande accumulé qui a été accumulé par l'unité d'accumulation et, au moyen de la vibration, pour retirer le matériau colorant du matériau de type bande accumulé.
PCT/JP2018/009671 2017-03-23 2018-03-13 Dispositif de séparation, procédé de séparation et appareil de production de feuille WO2018173850A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP2017-057149 2017-03-23
JP2017-057148 2017-03-23
JP2017057149A JP2018159154A (ja) 2017-03-23 2017-03-23 分離装置、分離方法、シート製造装置
JP2017057150A JP2018159155A (ja) 2017-03-23 2017-03-23 分離装置、分離方法、シート製造装置
JP2017-057150 2017-03-23
JP2017057148A JP6844362B2 (ja) 2017-03-23 2017-03-23 分離装置、分離方法、シート製造装置

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58214363A (ja) * 1982-06-04 1983-12-13 Kanzaki Paper Mfg Co Ltd プラスチツク類の分離方法
JPS6088130A (ja) * 1983-10-14 1985-05-17 Toyobo Co Ltd 着色繊維の製造法
JPH0345519A (ja) * 1989-07-13 1991-02-27 Toyo Ink Mfg Co Ltd 液相からのガラスの製造方法
JPH04240284A (ja) * 1990-08-09 1992-08-27 Kamyr Inc 紙回収工程におけるハイドロサイクロン脱墨及び付着性夾雑物の除去方法
JPH08202229A (ja) * 1995-01-27 1996-08-09 Mitsubishi Chem Corp 感光体クリーニング装置
JPH08226089A (ja) * 1994-11-28 1996-09-03 E & M Lamort Sa 紙パルプ用空気噴射器
US5632856A (en) * 1994-08-01 1997-05-27 Buie; Richard B. Method for removing toner from copy paper
JPH09220491A (ja) * 1996-02-15 1997-08-26 Nec Corp 紙とプラスチックスの混合物の分離方法
JP2005504903A (ja) * 2001-10-10 2005-02-17 メガトレックス オーワイ 着色剤、特に印刷インキを再生利用繊維材料から分離する方法

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58214363A (ja) * 1982-06-04 1983-12-13 Kanzaki Paper Mfg Co Ltd プラスチツク類の分離方法
JPS6088130A (ja) * 1983-10-14 1985-05-17 Toyobo Co Ltd 着色繊維の製造法
JPH0345519A (ja) * 1989-07-13 1991-02-27 Toyo Ink Mfg Co Ltd 液相からのガラスの製造方法
JPH04240284A (ja) * 1990-08-09 1992-08-27 Kamyr Inc 紙回収工程におけるハイドロサイクロン脱墨及び付着性夾雑物の除去方法
US5632856A (en) * 1994-08-01 1997-05-27 Buie; Richard B. Method for removing toner from copy paper
JPH08226089A (ja) * 1994-11-28 1996-09-03 E & M Lamort Sa 紙パルプ用空気噴射器
JPH08202229A (ja) * 1995-01-27 1996-08-09 Mitsubishi Chem Corp 感光体クリーニング装置
JPH09220491A (ja) * 1996-02-15 1997-08-26 Nec Corp 紙とプラスチックスの混合物の分離方法
JP2005504903A (ja) * 2001-10-10 2005-02-17 メガトレックス オーワイ 着色剤、特に印刷インキを再生利用繊維材料から分離する方法

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