JP2017074557A - Powder supply device and sheet manufacturing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a powder supply device capable of efficiently mixing fibers with a plurality of kinds of powders.SOLUTION: A powder supply device comprises: a first storage section storing powder; a second storage section being juxtaposed with the first storage section and storing the powder; a first supply passage for supplying the powder stored in the first storage section; a second supply passage for supplying the powder stored in the second storage section; and a joining section where the first supply passage joins the second supply passage. The first supply passage comprises: a first communication port communicating with the first storage section; and a first supply port communicating with the joining section. The second supply passage comprises: a second communication port communicating with the second storage section; and a second supply port communicating with the joining section. An interval between the first supply port and the second supply port is smaller than an interval between the first communication port and the second communication port.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a powder supply apparatus and a sheet manufacturing apparatus.

  2. Description of the Related Art Conventionally, a sheet manufacturing apparatus including a composite supply unit that supplies a composite that integrally includes a resin and a colorant is known (see, for example, Patent Document 1).

Japanese Patent Laying-Open No. 2015-92032

  However, in the above apparatus, for example, when changing the color intensity or color type, it is necessary to replace the complex supply unit containing the desired complex each time, resulting in a decrease in productivity. There was a problem.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms or application examples.

  Application Example 1 A powder supply apparatus according to this application example includes a first storage unit that stores powder, a second storage unit that is juxtaposed in the first storage unit and stores powder, and the first container. A first supply path for supplying the powder stored in the storage section; a second supply path for supplying the powder stored in the second storage section; the first supply path; A merging portion that merges with the second supply path, and the first supply path includes a first communication port that communicates with the first housing portion and a first supply port that communicates with the merging portion. The second supply path includes a second communication port that communicates with the second housing portion, and a second supply port that communicates with the merge portion, and the first supply port and the second supply port. The interval is smaller than the interval between the first communication port and the second communication port.

  According to this configuration, since different powders can be supplied from the plurality of supply paths to the junction, different powders can be easily mixed in the junction. Furthermore, the interval between the first supply port and the second supply port is smaller (narrower) than the interval between the first communication port and the second communication port. That is, it arrange | positions so that a 1st supply path and a 2nd supply path may mutually approach toward a junction part. Thereby, the area | region where powders merge can be narrowed, and an apparatus structure can be reduced in size. Furthermore, the mixing property of powders can be improved by narrowing the area | region where powders merge.

  Application Example 2 In the powder supply apparatus according to the application example described above, the length from the first communication port of the first supply path to the first supply port and the second communication port of the second supply path. The length to the second supply port is different.

  According to this structure, the space | interval of the 1st supply port in a junction part and a 2nd supply port can be narrowed easily.

  Application Example 3 A powder supply apparatus according to this application example includes a first storage unit that stores powder, a second storage unit that is juxtaposed to the first storage unit and stores powder, and the first storage unit. A first supply path for supplying the powder stored in the storage section; a second supply path for supplying the powder stored in the second storage section; the first supply path; A merging portion that merges with the second supply path, and the first supply path includes a first communication port that communicates with the first housing portion and a first supply port that communicates with the merging portion. The second supply path includes a second communication port that communicates with the second housing portion, and a second supply port that communicates with the merge portion, and the second supply channel communicates with the first communication port from the first communication port. The length to the first supply port is different from the length from the second communication port to the second supply port of the second supply path.

  According to this configuration, since different powders can be supplied from the plurality of supply paths to the junction, different powders can be easily mixed in the junction. Further, the length from the first communication port to the first supply port of the first supply path is different from the length from the second communication port to the second supply port of the second supply path. Accordingly, for example, the first storage portion and the second storage portion can be arranged alternately (staggered), so that the interval between the first supply port and the second supply port can be narrowed. Thereby, the area | region where powders merge can be narrowed, and an apparatus structure can be reduced in size. Furthermore, the mixing property of powders can be improved by narrowing the area | region where powders merge.

  Application Example 4 In the powder supply apparatus according to the application example described above, the first supply path is provided with a first screw for conveying powder, and the second supply path is configured to convey powder. A second screw is provided for the purpose.

  According to this configuration, by controlling the driving of the first screw and the second screw, it is possible to easily change or adjust the quantitative supply of powder and the supply amount.

  Application Example 5 A sheet manufacturing apparatus according to this application example includes a first storage part that stores a powdery first additive containing a resin, and a powdery second additive that is juxtaposed in the first storage part. A second storage part for storing the fiber, the fiber, the first additive and the second additive in the atmosphere, and the first additive stored in the first storage part. The 1st supply path for supplying to a mixing part, the 2nd supply path for supplying the said 2nd additive accommodated in the said 2nd accommodating part to the said mixing part, and the mixture mixed by the said mixing part A sheet forming section that heats the deposited mixture and binds a plurality of fibers with a resin contained in the first additive to form a sheet, and the first supply path includes the first supply path, A first communication port that communicates with the first housing portion; and a first supply port that communicates with the mixing portion; The path includes a second communication port that communicates with the second accommodating portion, and a second supply port that communicates with the mixing portion, and an interval between the first supply port and the second supply port is the first The distance between the first communication port and the second communication port is smaller.

  According to this configuration, since different additives can be supplied from the plurality of supply paths to the mixing unit, different additives can be easily mixed in the mixing unit. Furthermore, the interval between the first supply port and the second supply port is smaller (narrower) than the interval between the first communication port and the second communication port. That is, it arrange | positions so that a 1st supply path and a 2nd supply path may mutually approach toward a mixing part. Thereby, the area | region which mixes additives can be narrowed and an apparatus structure can be reduced in size. Furthermore, by narrowing the region where the additives are mixed, the mixing property between the additives can be improved, and a high-quality sheet can be produced.

  Application Example 6 In the sheet manufacturing apparatus according to the application example, the length from the first communication port of the first supply path to the first supply port and the second communication port of the second supply path The length to the second supply port is different.

  According to this structure, the space | interval of the 1st supply port in a mixing part and a 2nd supply port can be narrowed easily.

  Application Example 7 A sheet manufacturing apparatus according to this application example includes a first storage unit that stores a powdery first additive containing resin, and a powdery second additive that is juxtaposed in the first storage unit. A second storage part for storing the fiber, the fiber, the first additive and the second additive in the atmosphere, and the first additive stored in the first storage part. The 1st supply path for supplying to a mixing part, the 2nd supply path for supplying the said 2nd additive accommodated in the said 2nd accommodating part to the said mixing part, and the mixture mixed by the said mixing part A sheet forming section that heats the deposited mixture and binds a plurality of fibers with a resin contained in the first additive to form a sheet, and the first supply path includes the first supply path, A first communication port that communicates with the first housing portion; and a first supply port that communicates with the mixing portion; The path includes a second communication port that communicates with the second accommodating portion, and a second supply port that communicates with the mixing portion, from the first communication port of the first supply channel to the first supply port And the length of the second supply path from the second communication port to the second supply port are different from each other.

  According to this configuration, since different additives can be supplied from the plurality of supply paths to the mixing unit, different additives can be easily mixed in the mixing unit. Further, the length from the first communication port to the first supply port of the first supply path is different from the length from the second communication port to the second supply port of the second supply path. Accordingly, for example, the first storage portion and the second storage portion can be arranged alternately (staggered), so that the interval between the first supply port and the second supply port can be narrowed. Thereby, the area | region which mixes additives can be narrowed and an apparatus structure can be reduced in size. Furthermore, by narrowing the region where the additives are mixed, the mixing property between the additives can be improved, and a high-quality sheet can be produced.

  Application Example 8 In the sheet manufacturing apparatus according to the application example, the first supply path is provided with a first screw for conveying the first additive, and the second supply path is provided with the second addition. A second screw for transporting the agent is provided.

  According to this configuration, by controlling the driving of the first screw and the second screw, it is possible to easily change or adjust the quantitative supply or supply amount of each additive.

  Application Example 9 In the sheet manufacturing apparatus according to the application example described above, it is provided with a conveyance path that conveys fibers by an air current, and the mixing unit is provided in the conveyance path.

  According to this structure, a fiber and various additives can be favorably mixed with the airflow which conveys a fiber.

  Application Example 10 In the sheet manufacturing apparatus according to the application example, the conveyance path includes a first introduction port provided corresponding to the first supply port of the first supply path, and the second supply path. And a second introduction port provided corresponding to the second supply port.

  According to this structure, the 1st additive of a 1st accommodating part is introduce | transduced from a 1st inlet with respect to a conveyance path, and the 2nd additive of a 2nd accommodating part is introduced from a 2nd inlet. That is, the introduction ports are provided independently. Thereby, since an opening can be made small compared with the case where a 1st inlet and a 2nd inlet are provided as a common inlet, the disturbance of the airflow in a conveyance path can be suppressed.

  Application Example 11 The mixing unit of the sheet manufacturing apparatus according to the application example includes the first supply port of the first supply path, the second supply port of the second supply path, and the transport path. A cover for covering the first introduction port and the second introduction port is provided.

  According to this structure, scattering of the fiber and additive in a mixing part can be prevented.

The perspective view which shows the structure of the powder supply apparatus concerning 1st Embodiment. The schematic plan view which shows the structure of the powder supply apparatus concerning 1st Embodiment. Sectional drawing which shows a partial structure of the powder supply apparatus concerning 1st Embodiment. Sectional drawing which shows a partial structure of the powder supply apparatus concerning 1st Embodiment. The schematic plan view which shows the structure of the powder supply apparatus concerning 2nd Embodiment. The schematic diagram which shows the structure of the sheet manufacturing apparatus concerning 3rd and 4th embodiment. Schematic which shows a partial structure of the sheet manufacturing apparatus concerning the modification 1. FIG.

  Hereinafter, first to fourth embodiments of the present invention will be described with reference to the drawings. In the following drawings, the scale of each member or the like is shown differently from the actual scale so as to make each member or the like recognizable.

(First embodiment)
First, the configuration of the powder supply apparatus will be described. The powder supply device is configured to supply the first storage unit that stores the powder, the second storage unit that is juxtaposed to the first storage unit, and stores the powder, and the powder stored in the first storage unit. A first supply path, a second supply path for supplying the powder stored in the second storage section, and a merging section where the first supply path and the second supply path merge, The supply path includes a first communication port that communicates with the first housing part, and a first supply port that communicates with the merge part, and the second supply path includes a second communication port that communicates with the second storage part, A second supply port that communicates with the merging portion, and an interval between the first supply port and the second supply port is smaller than an interval between the first communication port and the second communication port. This will be specifically described below.

  FIG. 1 is a perspective view showing the configuration of the powder supply apparatus, FIG. 2 is a schematic plan view showing the configuration of the powder supply apparatus, and FIGS. 3 and 4 show a partial configuration of the powder supply apparatus. It is sectional drawing.

  As shown in FIG.1 and FIG.2, the powder supply apparatus 52 is provided with the some accommodating part. The powder supply apparatus 52 according to the present embodiment includes five accommodating portions, that is, a third accommodating portion 523, a fourth accommodating portion 524, and a fifth accommodating portion 525 in addition to the first accommodating portion 521 and the second accommodating portion 522. ing.

  Each of the first accommodating portion 521 to the fifth accommodating portion 525 accommodates powder. The powder is not particularly limited, and includes, for example, a pulverized amorphous shape, a synthetic granulated sphere shape, a rod shape having a high aspect ratio, a fiber shape, a mixture thereof, and the like. Also, the size is not specified. In the powder according to the present embodiment, the first cartridge 561 to the fifth cartridge 565 in which the powder is stored are mounted in the first storage portion 521 to the fifth storage portion 525, and the first cartridge 561 to the fifth cartridge 525 are mounted. The powder stored in the cartridge 565 is transferred from the first storage portion 521 to the fifth storage portion 525 by gravity.

  In addition, the powder supply device 52 is provided with a joining unit 550 that joins the powders supplied from each of the first housing unit 521 to the fifth housing unit 525. In the merging unit 550 of the present embodiment, an air flow such as the atmosphere is generated in the tube 54, and the powder supplied from each of the first storage unit 521 to the fifth storage unit 525 is mixed using the air flow. It has a configuration. In addition, as an airflow generation means, a blower etc. can be used, for example.

  A first supply path 531 for supplying the powder stored in the first storage portion 521 to the tube 54 is disposed between the first storage portion 521 and the tube 54. Further, a second supply path 532 for supplying the powder stored in the second storage portion 522 to the tube 54 is disposed between the second storage portion 522 and the tube 54. Further, a third supply path 533 for supplying the powder stored in the third storage portion 523 to the tube 54 is disposed between the third storage portion 523 and the tube 54. A fourth supply path 534 for supplying the powder stored in the fourth storage portion 524 to the tube 54 is disposed between the fourth storage portion 524 and the tube 54. Further, a fifth supply path 535 for supplying the powder stored in the fifth storage portion 525 to the tube 54 is disposed between the fifth storage portion 525 and the tube 54.

  As shown in FIGS. 3 and 4, the first supply path 531 is formed in a tubular shape and extends in a substantially horizontal direction. The first supply path 531 includes a first communication port 531a that communicates with the first housing portion 521 and a first supply port 531b that communicates with the merge portion 550 (tube 54). In the present embodiment, the first communication port 531 a is disposed at the lower part (bottom part) of the first housing part 521. The first supply port 531b is disposed at a position corresponding to the first introduction port 54a provided above the pipe 54 (merging portion 550). The first supply port 531b and the first introduction port 54a may be sealed and joined so that the powder does not scatter. The first supply path 531 is provided with a first screw 541 for conveying powder from the first accommodating portion 521 toward the tube 54. The first screw 541 rotates by driving the motor 581 and can convey the powder stored in the first storage portion 521 to the tube 54 (merging portion 550). The rotation direction of the screw 541 may be either right rotation (clockwise) or left rotation (counterclockwise).

  Similarly, the second supply path 532 is formed in a tubular shape and extends in a substantially horizontal direction. The second supply path 532 includes a second communication port 532 a that communicates with the second housing portion 522 and a second supply port 532 b that communicates with the merge portion 550. The first communication port 531 a is disposed at the lower part (bottom part) of the second housing part 522. The second supply port 532b is disposed at a position corresponding to the second introduction port 54b provided above the pipe 54 (merging portion 550). The second supply path 532 is provided with a second screw 542 for conveying powder from the second storage portion 522 toward the tube 54. The second screw 542 rotates by driving a motor, and can convey the powder stored in the second storage portion 522 to the tube 54 (merging portion 550).

  The third supply path 533 to the fifth supply path 535 are also arranged in the same manner as the first and second supply paths 531 and 532, and the third screw 543 is connected to each of the third supply path 533 to the fifth supply path 535. The fifth screw 545 is provided. Then, by driving the fifth screw 545 from the third screw 543, the powder accommodated in the fifth accommodating portion 525 can be conveyed from the third accommodating portion 523 to the tube 54 (merging portion 550).

  As described above, the pipe 54 is formed with the first introduction port 54a to the fifth introduction port 54e. In addition, the first supply port 531b of the first supply path 531 to the fifth supply port 535b of the fifth supply path 535 are arranged corresponding to the first introduction port 54a to the fifth introduction port 54e, respectively. In the merging section 550, the first introduction port 54a to the fifth introduction port 54e are provided independently, compared to the case where the first introduction port 54a to the fifth introduction port 54e are provided as a common introduction port, Since the opening area can be reduced, the turbulence of the airflow in the tube 54 can be suppressed. In addition, the first introduction port 54a to the fifth introduction port 54e are arranged at equal intervals, and the turbulence of the air flow in the tube 54 can be suppressed. Therefore, the powders conveyed from each of the first container 521 to the fifth container 525 can be mixed well in the junction 550 without unevenness.

  Here, as shown in FIG. 2, the interval d1 between the first supply port 531b and the second supply port 532b is smaller (narrower) than the interval d11 between the first communication port 531a and the second communication port 532a. Similarly, the interval d2 between the second supply port 532b and the third supply port 533b is smaller (narrower) than the interval d21 between the second communication port 532a and the third communication port 533a. Similarly, the interval d3 between the third supply port 533b and the fourth supply port 534b is smaller (narrower) than the interval d31 between the third communication port 533a and the fourth communication port 534a. Similarly, the interval d4 between the fourth supply port 534b and the fifth supply port 535b is smaller (narrower) than the interval d41 between the fourth communication port 534a and the fifth communication port 535a. That is, the first supply path 531 to the fifth supply path 535 are not arranged in parallel to each other with respect to the pipe 54 in a plan view, but the first supply path 531 to the fifth supply path 535 approach each other with respect to the pipe 54. So that they are arranged at an angle. Thereby, the area | region of the confluence | merging part 550 can be made small compared with the case where the 1st supply path 531 to the 5th supply path 535 are arrange | positioned mutually parallel.

  In this embodiment, the length L1 from the first communication port 531a to the first supply port 531b of the first supply channel 531 and the length from the second communication port 532a to the second supply port 532b of the second supply channel 532 are also shown. The length L2 is different. Further, the length L2 of the second supply path 532 is different from the length L3 from the third communication port 533a to the third supply port 533b of the third supply path 533. Further, the length L3 of the third supply path 533 is different from the length L4 from the fourth communication port 534a to the fourth supply port 534b of the fourth supply path 534. Further, the length L4 of the fourth supply path 534 is different from the length L5 from the fifth communication port 535a to the fifth supply port 535b of the fifth supply path 535. That is, it arrange | positions so that the length of an adjacent supply path may differ, respectively. Thereby, the space | interval of the supply ports of an adjacent supply path can be arrange | positioned easily narrowly.

  As shown in FIGS. 1 and 3, in the present embodiment, the first supply port 531 from the first supply port 531 b to the fifth supply port 535 b of the fifth supply channel 535 and the first introduction port of the pipe 54 are provided. A cover 570 is provided to cover from 54a to the fifth introduction port 54e. That is, the joining part 550 where the powders join is covered with the cover 570. The cover 570 is made of, for example, a resin material that is lightweight and can be molded in a small size. Thereby, scattering of the powder in the junction 550 can be prevented.

  As described above, according to the present embodiment, the following effects can be obtained.

  By arranging the first supply path 531 and the fifth supply path 535 closer to each other toward the merge section 550, the area of the merge section 550 where the powders merge can be made narrower, and the powder supply apparatus 52 can be reduced in size. Moreover, the mixing property of the powders conveyed from each accommodating part 521-525 can be improved by narrowing the area | region of the confluence | merging part 550. FIG. Further, by arranging the storage units 521 to 525 in a line, the cartridges 561 to 565 mounted on the storage units 521 to 525 are attached to or detached from the powder supply device 52 in one direction. It becomes possible.

(Second Embodiment)
Next, the configuration of the powder supply apparatus according to the second embodiment will be described. The powder supply apparatus according to the present embodiment includes a first storage unit that stores powder, a second storage unit that is juxtaposed with the first storage unit and stores powder, and a powder that is stored in the first storage unit. A first supply path for supplying the second supply path, a second supply path for supplying the powder stored in the second storage section, and a merge section where the first supply path and the second supply path merge. The first supply path includes a first communication port that communicates with the first housing part, and a first supply port that communicates with the merge part, and the second supply path communicates with the second housing part. A communication port and a second supply port communicating with the merging portion, the length from the first communication port to the first supply port of the first supply path, and the second supply from the second communication port of the second supply path The length to the mouth is different.

  FIG. 5 is a schematic plan view showing the configuration of the powder supply apparatus. In the present embodiment, the same reference numerals as those in the first embodiment are assigned to the same configurations as those in the first embodiment. Hereinafter, a different form from 1st Embodiment, ie, the arrangement | positioning of the 1st accommodating part 521 of the powder supply apparatus 52a to the 5th accommodating part 525, and the arrangement | positioning of the 1st supply path 531 to the 5th supply path 535 are demonstrated.

  As shown in FIG. 5, in the powder supply device 52 a, the adjacent storage units from the first storage unit 521 to the fifth storage unit 525 are alternately arranged. The first supply path 531 to the fifth supply path 535 are arranged in parallel to each other. A length L1 from the first communication port 531a to the first supply port 531b of the first supply path 531; a length L2 from the second communication port 532a to the second supply port 532b of the second supply path 532; Are arranged differently. In the present embodiment, the length L1 of the first supply path 531 is longer than the length L2 of the second supply path 532.

  Further, the length L2 of the second supply path 532 is different from the length L3 from the third communication port 533a to the third supply port 533b of the third supply path 533, and the length L2 is longer than the length L3. Also short. The length L3 of the third supply path 533 is different from the length L4 from the fourth communication port 534a to the fourth supply port 534b of the fourth supply path 534, and the length L3 is more than the length L4. Too long. Further, the length L4 of the fourth supply path 534 is different from the length L5 from the fifth communication port 535a to the fifth supply port 535b of the fifth supply path 535, and the length L4 is more than the length L5. Also short.

  Further, the interval d1 between the first supply port 531b and the second supply port 532b is equal to the interval d11 between the first communication port 531a and the second communication port 532a. Similarly, the interval d2 between the second supply port 532b and the third supply port 533b is equivalent to the interval d21 between the second communication port 532a and the third communication port 533a. Further, the interval d3 between the third supply port 533b and the fourth supply port 534b is equal to the interval d31 between the third communication port 533a and the fourth communication port 534a. Similarly, the distance d4 between the fourth supply port 534b and the fifth supply port 535b is equal to the distance d41 between the fourth communication port 534a and the fifth communication port 535a.

  In addition, since the structure except the above concerning this embodiment is the same as that of the structure of 1st Embodiment, description is abbreviate | omitted.

  As described above, according to the present embodiment, the following effects can be obtained.

  By arranging the first accommodating portions 521 to the fifth accommodating portions 525 alternately in a plan view, the interval between the first supply passage 531 and the fifth supply passage 535 can be reduced with respect to the pipe 54, The area of 550 can be reduced. Thereby, the powder supply apparatus 52a can be reduced in size. Moreover, the mixing property of the powders conveyed from each accommodating part 521-525 can be improved by narrowing the area | region of the confluence | merging part 550. FIG.

(Third embodiment)
Next, the configuration of the sheet manufacturing apparatus will be described. The sheet manufacturing apparatus includes a first storage unit that stores a powdery first additive containing a resin, a second storage unit that is juxtaposed in the first storage unit and stores the powdery second additive, and fibers. A mixing unit that mixes the first additive and the second additive in the atmosphere, a first supply path for supplying the first additive stored in the first storage unit to the mixing unit, and a second storage A second supply path for supplying the second additive contained in the mixing unit to the mixing unit, and depositing the mixture mixed in the mixing unit, and heating the deposited mixture to turn the plurality of fibers into the first additive A sheet forming unit that forms a sheet by binding with a resin included, the first supply path, a first communication port that communicates with the first storage unit, a first supply port that communicates with the mixing unit, The second supply path includes a second communication port that communicates with the second storage unit, and a second supply port that communicates with the mixing unit, and the first supply port Distance between second supply ports is smaller than the distance between the first communication port and the second communication port. This will be specifically described below. In addition, this embodiment demonstrates the structure at the time of applying the powder supply apparatus 52 concerning 1st Embodiment.

  FIG. 6 is a schematic diagram illustrating the configuration of the sheet manufacturing apparatus. As shown in FIG. 6, 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, and a powder (additive) supply unit 52 ( Equivalent to the powder supply device 52), a depositing unit 60, a second web forming unit 70, a sheet forming unit 80, and a cutting unit 90.

  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 crushing unit 12 cuts the raw material supplied by the supply unit 10 into air into pieces. The shape and size of the strip is, for example, a strip of several cm square. In the illustrated example, the crushing unit 12 has a crushing blade 14, and the charged raw material can be cut by the crushing blade 14. As the crushing part 12, 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. Here, “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 substances such as resin particles, ink, toner, and a bleeding inhibitor adhering to the raw material from the fibers.

  What has passed through the defibrating unit 20 is referred to as “defibrated material”. In addition to the defibrated fibers that have been unraveled, the “defibrated material” includes resin particles (resins that bind multiple fibers together), ink, toner, etc. In some cases, additives such as colorants, anti-bleeding materials, and paper strength enhancing agents are included.

  The defibrating unit 20 defibrates in a dry manner in the atmosphere (in the air). Specifically, an impeller mill is used as the defibrating unit 20. 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. In addition, 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 introduces the defibrated material defibrated by the defibrating unit 20 from the introduction port 42 and sorts the defibrated material according to the length of the fiber. As the selection unit 40, for example, a sieve is used. The sorting unit 40 has a net (filter, screen), fibers or particles smaller than the mesh size of the mesh (things that pass through the mesh, the first selection product), 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. For example, 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. Specifically, the sorting unit 40 is a cylindrical sieve that is rotationally driven by a motor. As the net of the sorting unit 40, 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 first web forming unit 45 conveys the first sorted product that has passed through the sorting unit 40 to the mixing unit 50. The first web forming unit 45 includes a mesh belt 46, a stretching roller 47, and a suction unit (suction mechanism) 48.

  The suction unit 48 can suck the first sorted matter dispersed in the air through the opening (opening of the mesh) of the sorting unit 40 onto the mesh belt 46. The first selection is deposited on the moving mesh belt 46 to form the web V. 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.

  The rotating body 49 can cut the web V before the web V is conveyed to the mixing unit 50. In the illustrated example, 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. In the illustrated example, four protrusions 49b are provided, and four protrusions 49b are provided at equal intervals. When the base 49a rotates in the direction R, the protrusion 49b can rotate around the base 49a. By cutting the web V by the rotating body 49, for example, the fluctuation in the amount of defibrated material per unit time supplied to the deposition unit 60 can be reduced.

  The mixing unit 50 is a powdery additive containing the first selected product that has passed through the selecting unit 40 (the first selected product conveyed by the first web forming unit 45) and the resin supplied from the powder supply unit 52. And mix. Specifically, the sheet manufacturing apparatus 100 includes a tube 54 as a conveyance path for conveying the first selected material and the additive, and the mixing unit 50 is provided in the tube 54. A blower 56 is arranged in the mixing unit 50. The tube 54 is continuous with the tube 7.

  In the mixing unit 50, an air flow is generated by the blower 56, and the first selection product and the additive can be mixed and conveyed in the pipe 54. In addition, the mechanism in which the 1st selection thing and an additive are mixed is not specifically limited.

  The powder (additive) supply unit 52 of the present embodiment has the same configuration as the powder supply device 52 of the first embodiment, and a description thereof will be omitted (see FIGS. 1 to 4). In addition, the powdery 1st-5th additive is accommodated in the 1st accommodating part 521-5th accommodating part 525, respectively.

  Note that at least one of the first to fifth additives supplied from the additive supply unit 52 includes a resin 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. 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.

  In addition to the resin that binds the fibers, the first to fifth additives supplied from the additive supply unit 52 include a colorant for coloring the fibers, depending on the type of sheet to be manufactured, An aggregation inhibitor for preventing aggregation of the fibers, a flame retardant for preventing the fibers from burning easily, a deodorizing agent, a scent component, and the like 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 depositing 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.

  As the deposition unit 60, a rotating cylindrical sieve is used. The deposition unit 60 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 deposition unit 60 is the same as the configuration of the sorting unit 40, for example.

  It should be noted that the “sieving” of the depositing unit 60 may not have a function of selecting a specific object. That is, the “sieving” used as the depositing unit 60 means that the net is provided, and the depositing unit 60 may drop all of the mixture introduced into the depositing unit 60.

  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 tension roller 74, and a suction mechanism 76.

  While moving, the mesh belt 72 accumulates the passing material that has passed through the opening of the accumulation unit 60 (the opening of the mesh). The mesh belt 72 is stretched by a stretching roller 74, and is configured to allow air to pass therethrough. 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 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). Thereby, the discharge speed from the deposition part 60 can be increased.

  As described above, the web W in a state where it contains a lot of air and is softly swollen is formed by passing through the deposition unit 60 and the second web forming unit 70 (web forming step). The web W deposited on the mesh belt 72 is conveyed to the sheet forming unit 80.

  In the illustrated example, a humidity control unit 78 that adjusts the humidity of the web W is provided. 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 deposited on the mesh belt 72. In 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 are bound to each other via the additive (resin). Can do.

  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 includes a pair of heating rollers 86. The sheet W is formed by heating the web W pressed by the calendar roller 85 by the heating roller 86, melting the resin, and binding the fibers. Here, the calendar roller 85 (pressure unit 82) 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. In the illustrated example, 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.

Thus, a single-sheet sheet S having a predetermined size is formed. Cut sheet S
Is discharged to the discharge unit 96.

  Next, a sheet manufacturing method will be described. In the present embodiment, a method for manufacturing a colored sheet S will be described.

  First, in the powder supply unit 52, a magenta pigment and a polyester resin are kneaded and pulverized to an average particle size of 10 microns in the first storage unit 521, and fumed silica is externally added as a fluidity modifier. The powdered colored resin powder is accommodated as the first additive. Similarly, colored resin powder of cyan pigment and polyester resin is accommodated in the second accommodating portion 522 as the second additive. Further, in the third storage portion 523, a colored resin powder of yellow pigment and polyester resin is stored as a third additive. Moreover, the 4th accommodating part 524 accommodates the colored resin powder of a white pigment and polyester resin as a 4th additive. And in the 5th accommodating part 525, the polyester resin which does not contain a coloring material is grind | pulverized similarly, and the resin powder which externally added the modifier is accommodated as a 5th additive.

  Then, the used paper is supplied from the supply unit 10 and the used paper supplied in the defibrating unit 20 is defibrated in a dry manner in the atmosphere (in the air). Then, in the mixing unit 50, the fifth additive is supplied from the first additive to the pipe 54 from the first container 521 to the fifth container 525. At this time, the supply amount of the fifth additive from the first additive in each of the first accommodating parts 521 to the fifth accommodating part 525 is controlled. The supply amount of the first additive to the fifth additive can be controlled by driving and controlling each of the first screw 541 to the fifth screw 545. Thereby, an additive can be thrown in with the compounding ratio of the desired color.

  And in the mixing part 50, the fiber conveyed with an airflow and the 1st additive to the 5th additive are mixed. The mixed mixture is deposited by the deposition unit 60. Thereafter, the deposited deposit is heated by the sheet forming unit 80, and the fibers are bound by the resin contained in the first to fifth additives. Thereby, the sheet | seat S in which desired coloring was given is manufactured.

  As described above, according to the present embodiment, the following effects can be obtained.

  The fifth additive is supplied from the first additive to the mixing unit 50 from the first supply path 531 through the fifth supply path 535, and different additives can be easily mixed in the mixing unit 50. Furthermore, by arranging the first supply path 531 to the fifth supply path 535 toward the mixing section 50 so as to approach each other, the region of the mixing section 50 where the fifth additive mixes with the first additive is narrower. The configuration of the sheet manufacturing apparatus 100 can be reduced in size. Further, by narrowing the region of the mixing unit 50, the mixing property of the fifth additive from the first additive conveyed from the first storage unit 521 to the fifth storage unit 525 is improved, and the high quality sheet S is obtained. Can be manufactured. In addition, by arranging the storage units 521 to 525 in a line, the cartridges 561 to 565 mounted on the storage units 521 to 525 can be attached / detached or replaced from one side of the sheet manufacturing apparatus 100. Is possible.

(Fourth embodiment)
Next, the configuration of another sheet manufacturing apparatus will be described. The sheet manufacturing apparatus of the present embodiment includes a first storage unit that stores a powdery first additive containing a resin, and a second storage unit that is juxtaposed in the first storage unit and stores a powdery second additive. A mixing unit that mixes the fiber, the first additive, and the second additive in the atmosphere, and a first supply path for supplying the first additive stored in the first storage unit to the mixing unit A second supply path for supplying the second additive stored in the second storage unit to the mixing unit, and the mixture mixed in the mixing unit is deposited, and the deposited mixture is heated to form a plurality of fibers. A sheet forming section that forms a sheet by binding with a resin contained in one additive, and the first supply path communicates with the first communication port that communicates with the first housing section and the first communication section that communicates with the mixing section. The second supply path includes a second communication port that communicates with the second accommodating portion, and a second supply port that communicates with the mixing portion. The length from the first communication port of the first supply path to the first supply port, and a length from the second communication port of the second supply path to the second feed port, are different. This will be specifically described below. In the present embodiment, a configuration when the powder supply device 52a according to the second embodiment is applied will be described.

  Similar to the sheet manufacturing apparatus 100 of the third embodiment, the sheet manufacturing apparatus 100a includes a supply unit 10, a manufacturing unit 102, and a control unit 104 (see FIG. 6). 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 50a, and a powder supply unit 52a (powder supply device). 52a), a depositing part 60, a second web forming part 70, a sheet forming part 80, and a cutting part 90.

  In the present embodiment, a mode different from the third embodiment will be described in detail.

  The mixing unit 50a is a powdery additive containing the first selected product that has passed through the selecting unit 40 (the first selected product conveyed by the first web forming unit 45) and the resin supplied from the powder supply unit 52a. And mix. Specifically, the sheet manufacturing apparatus 100 a includes a tube 54 as a conveyance path for conveying the first selected material and the additive, and the mixing unit 50 is provided in the tube 54. The mixing unit 50 a has a blower 56. The tube 54 is continuous with the tube 7. In the mixing unit 50 a, an air flow is generated by the blower 56, and the first selection product and the additive can be mixed and conveyed in the pipe 54.

  The powder (additive) supply part 52a of this embodiment is the same structure as the powder supply apparatus 52a of 2nd Embodiment, and abbreviate | omits description (refer FIG. 5). In addition, the powdery 1st-5th additive is accommodated in the 1st accommodating part 521-5th accommodating part 525, respectively.

  Since the first to fifth additives supplied from the additive supply unit 52a are the same as those in the third embodiment, the description thereof is omitted. Then, the mixture (mixture of the first selection product and the additive) that has passed through the mixing unit 50 a is transferred to the deposition unit 60 via the pipe 54.

  Note that the sheet manufacturing method according to the present embodiment can also be performed in the same manner as in the third embodiment, and thus the description thereof is omitted.

  As described above, according to the present embodiment, the following effects can be obtained.

  By arranging the first accommodating portions 521 to the fifth accommodating portions 525 alternately in a plan view, the interval between the first supply passage 531 and the fifth supply passage 535 can be reduced with respect to the pipe 54, and the mixing portion The area 50a can be reduced. Thereby, the sheet manufacturing apparatus 100a can be reduced in size. In addition, by narrowing the region of the mixing unit 50a, it is possible to improve the mixing property of the fifth additive from the first additive conveyed from each of the storage units 521 to 525, and to manufacture a high-quality sheet S. it can.

  The present invention is not limited to the above-described embodiment, and various modifications and improvements can be added to the above-described embodiment. A modification will be described below. Modifications may be combined.

(Modification 1) In the first to fourth embodiments, the configuration including the five accommodating portions from the first accommodating portion 521 to the fifth accommodating portion 525 has been described as an example. However, the present invention is not limited to this configuration. For example, the structure provided with the two accommodating parts of the 1st accommodating part 521 and the 2nd accommodating part 522 may be sufficient.
FIG. 7 is a schematic view showing a partial configuration of a sheet manufacturing apparatus according to this modification. As shown in FIG. 7, the sheet manufacturing apparatus 100b includes a powder supply unit 52b and a mixing unit 50b. The powder supply unit 52b includes a first storage unit 521 that stores a powdery first additive containing resin, and a second storage unit that is juxtaposed with the first storage unit 521 and stores a powdery second additive. 522. Moreover, the mixing part 50b which mixes a fiber, a 1st additive, and a 2nd additive in air | atmosphere is provided. In the present modification, a mixing unit 50b is provided in a part of the tube 54 as a conveyance path, and the fibers, the first additive, and the second additive are conveyed and mixed in the tube 54 by an air current. Then, a first supply path 531 for supplying the first additive stored in the first storage unit 521 to the mixing unit 50b and a second additive stored in the second storage unit 522 are supplied to the mixing unit 50b. The first supply path 531 includes a first communication port 531a that communicates with the first housing portion 521, and a first supply port 531b that communicates with the mixing portion 50b. The second supply path 532 includes a second communication port 532a that communicates with the second housing portion 522, and a second supply port 532b that communicates with the mixing unit 50b. The distance d1 between the first supply port 531b and the second supply port 532b is smaller than the distance d11 between the first communication port 531a and the second communication port 532a (see FIG. 2). Note that other configurations of the sheet manufacturing apparatus 100b (deposition unit, sheet forming unit, and the like) are the same as those in the third embodiment, and thus description thereof is omitted. Even if it does in this way, the area | region of the mixing part 50b can be narrowed, and a fiber, a 1st additive, and a 2nd additive can be mixed efficiently and favorably.

  Moreover, as a sheet manufacturing method in the present modification, for example, natural powder (for example, green tea powder or the like) is stored in the first storage portion 521, and polyester resin powder is stored in the second storage portion 522. Then, used paper is supplied to the sheet manufacturing apparatus 100b, and the supplied used paper is defibrated in a dry manner in the atmosphere (in the air). Then, in the powder supply unit 52b, the matcha powder is supplied from the first storage unit 521 to the tube 54 (mixing unit 50b), and the polyester resin is supplied from the second storage unit 522. At this time, the supply amount of the green tea powder and the supply amount of the polyester resin are controlled in each of the first storage portion 521 and the second storage portion 522. Thereby, in the mixing part 50, the fiber conveyed by an airflow, matcha powder, and a polyester resin are mixed. Thereafter, the mixed mixture is deposited, and the deposited deposit is heated under pressure. Thereby, the sheet | seat S with the scent of green tea with the match brown can be manufactured.

  In addition, the number of accommodating parts should just be two or more, and the number of accommodating parts can be suitably set according to the form of the sheet | seat S to manufacture.

  (Modification 2) In the third embodiment, an example was described in which the fifth additive from the first additive was accommodated in each of the first accommodating part 521 to the fifth accommodating part 525 and supplied to the pipe 54 from each. However, it is not limited to this. There may be a storage unit that is not used (does not supply additives) among the first storage unit 521 to the fifth storage unit 525. For example, depending on the sheet S to be manufactured, the type of additive required may differ, and there may be unused storage parts (additives). In this case, a shutter part capable of opening and closing each of the first introduction port 54a to the fifth introduction port 54e of the tube 54 is provided, and the introduction port corresponding to the unused storage unit is closed by the shutter unit. If it does in this way, the opening area of the mixing part 50 can be made small and the disturbance of an airflow can be suppressed. A shutter unit may be provided in each of the first supply port 531b to the fifth supply port 535b.

  DESCRIPTION OF SYMBOLS 50 ... Mixing part, 50a ... Mixing part, 50b ... Mixing part, 52 ... Powder supply apparatus (powder supply part in sheet manufacturing apparatus 100), 52a ... Powder supply apparatus (powder supply part in sheet manufacturing apparatus 100a) , 52b ... powder supply unit, 52c ... powder supply device, 54 ... pipe (conveyance path), 54a ... first introduction port, 54b ... second introduction port, 54c ... third introduction port, 54d ... fourth introduction port 54e ... fifth inlet, 60 ... stacking section, 80 ... sheet forming section, 100 ... sheet manufacturing apparatus, 100a ... sheet manufacturing apparatus, 100b ... sheet manufacturing apparatus, 521 ... first housing section, 522 ... second housing section. 523 ... 3rd accommodating part, 524 ... 4th accommodating part, 525 ... 5th accommodating part, 531 ... 1st supply path, 531a ... 1st communication port, 531b ... 1st supply port, 532 ... 2nd supply path, 532a ... 2nd communication port, 532b ... 2nd Feed port 533 ... 3rd supply path, 533a ... 3rd communication port, 533b ... 3rd supply port, 534 ... 4th supply path, 534a ... 4th communication port, 534b ... 4th supply port, 535 ... 5th supply Path, 535a ... fifth communication port, 535b ... fifth supply port, 541 ... first screw, 542 ... second screw, 543 ... third screw, 544 ... fourth screw, 545 ... fifth screw, 550 ... confluence 570: Cover.

Claims (11)

A first container for containing powder;
A second housing portion juxtaposed with the first housing portion and housing powder;
A first supply path for supplying the powder accommodated in the first accommodating portion;
A second supply path for supplying the powder accommodated in the second accommodating portion;
A merging portion where the first supply path and the second supply path merge,
The first supply path includes a first communication port that communicates with the first housing portion, and a first supply port that communicates with the merge portion,
The second supply path includes a second communication port that communicates with the second housing portion, and a second supply port that communicates with the merge portion,
The powder supply apparatus, wherein an interval between the first supply port and the second supply port is smaller than an interval between the first communication port and the second communication port. The powder supply apparatus according to claim 1, wherein
The length of the first supply path from the first communication port to the first supply port is different from the length of the second supply path from the second communication port to the second supply port. Powder supply device. A first container for containing powder;
A second housing portion juxtaposed with the first housing portion and housing powder;
A first supply path for supplying the powder accommodated in the first accommodating portion;
A second supply path for supplying the powder accommodated in the second accommodating portion;
A merging portion where the first supply path and the second supply path merge,
The first supply path includes a first communication port that communicates with the first housing portion, and a first supply port that communicates with the merge portion,
The second supply path includes a second communication port that communicates with the second housing portion, and a second supply port that communicates with the merge portion,
The length of the first supply path from the first communication port to the first supply port is different from the length of the second supply path from the second communication port to the second supply port. Powder supply device. In the powder supply apparatus according to any one of claims 1 to 3,
The first supply path is provided with a first screw for conveying powder,
The powder supply apparatus, wherein the second supply path is provided with a second screw for conveying powder. A first accommodating portion for accommodating a powdery first additive containing a resin;
A second housing portion juxtaposed to the first housing portion and housing the powdered second additive;
A mixing section for mixing the fiber, the first additive, and the second additive in the air;
A first supply path for supplying the first additive stored in the first storage unit to the mixing unit;
A second supply path for supplying the second additive accommodated in the second accommodating portion to the mixing portion;
A sheet forming unit that deposits the mixture mixed in the mixing unit, heats the deposited mixture, binds a plurality of fibers with a resin contained in the first additive, and forms a sheet; and
The first supply path includes a first communication port that communicates with the first housing portion, and a first supply port that communicates with the mixing portion,
The second supply path includes a second communication port that communicates with the second storage unit, and a second supply port that communicates with the mixing unit,
The sheet manufacturing apparatus, wherein an interval between the first supply port and the second supply port is smaller than an interval between the first communication port and the second communication port. In the sheet manufacturing apparatus according to claim 5,
The length of the first supply path from the first communication port to the first supply port is different from the length of the second supply path from the second communication port to the second supply port. Sheet manufacturing equipment. A first accommodating portion for accommodating a powdery first additive containing a resin;
A second housing portion juxtaposed to the first housing portion and housing the powdered second additive;
A mixing section for mixing the fiber, the first additive, and the second additive in the air;
A first supply path for supplying the first additive stored in the first storage unit to the mixing unit;
A second supply path for supplying the second additive accommodated in the second accommodating portion to the mixing portion;
Depositing the mixture mixed in the mixing unit, heating the deposited mixture and binding a plurality of fibers with the resin contained in the first additive to form a sheet; and
With
The first supply path includes a first communication port that communicates with the first housing portion, and a first supply port that communicates with the mixing portion,
The second supply path includes a second communication port that communicates with the second storage unit, and a second supply port that communicates with the mixing unit,
The length of the first supply path from the first communication port to the first supply port is different from the length of the second supply path from the second communication port to the second supply port. Sheet manufacturing equipment. In the sheet manufacturing apparatus according to any one of claims 5 to 7,
The first supply path is provided with a first screw for conveying the first additive,
The sheet manufacturing apparatus according to claim 1, wherein the second supply path is provided with a second screw for conveying the second additive. In the sheet manufacturing apparatus according to any one of claims 5 to 8,
Equipped with a transport path for transporting fibers by airflow,
The sheet producing apparatus, wherein the mixing unit is provided in the conveyance path. In the sheet manufacturing apparatus according to claim 9,
The transport path is
A first introduction port provided corresponding to the first supply port of the first supply path;
And a second introduction port provided corresponding to the second supply port of the second supply path. In the sheet manufacturing apparatus according to claim 10,
The mixing unit includes:
A cover for covering the first supply port of the first supply path, the second supply port of the second supply path, and the first and second introduction ports of the transport path; Characteristic sheet manufacturing apparatus.

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