JP2017094651A - Sheet manufacturing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance sealability of a suction section and to manufacture a sheet having uniform quality.SOLUTION: A sheet manufacturing apparatus comprises: a drum section having a plurality of openings; a mesh body having a deposition surface on which a material containing fiber passing through the plurality of openings is deposited as a web and transporting the web deposited; a suction section sucking the material passing through the openings onto the mesh body, the suction section having a first housing section for defining a sucking region at a reverse surface side of the deposition surface of the mesh body; a first roller brought into contact with a reverse surface of the mesh body disposed outside the first housing section; and a first seal section being provided on the first housing section and brought into contact with an outer peripheral surface of the first roller.SELECTED DRAWING: Figure 2A

Description

  The present invention relates to a sheet manufacturing apparatus.

  2. Description of the Related Art Conventionally, there is known a sheet manufacturing apparatus configured such that a material that has passed through a drum portion covered with a housing portion is deposited on a mesh belt by a suction force by a suction portion (see, for example, Patent Document 1).

JP2015-120999A

  However, the above apparatus has a problem that if the sealing property between the suction part and the mesh belt is not ensured, the inside of the housing part cannot be sucked uniformly and the quality of the sheet is deteriorated.

  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 sheet manufacturing apparatus according to this application example has a drum portion having a plurality of openings and a deposition surface on which a material containing fibers passing through the openings is deposited as a web, and conveys the deposited web. And a suction part for sucking the material that has passed through the opening onto the mesh body, the suction part having a first housing part for defining a suction region on the back side of the deposition surface of the mesh body Part, a first roller that contacts the back surface of the mesh body disposed outside the first housing part, and a first seal part that is provided on the first housing part and contacts the outer peripheral surface of the first roller And.

  According to this configuration, the space surrounded by the first roller, the first housing portion, and the mesh body is substantially sealed (sealed) by the first seal portion and the first roller. Thereby, the intake air from between the first roller and the first housing part is suppressed, and the material that has passed through the opening of the drum part can be stably sucked. As a result, a more uniform sheet can be produced.

  Application Example 2 In the sheet manufacturing apparatus according to the above application example, at least a part of the first seal portion is separated without contacting the back surface of the mesh body.

  According to this configuration, in the region where the mesh body and the first seal portion are separated from each other, the material does not adhere and become clogged between the mesh body and the first seal portion, thereby suppressing the load on the mesh body. Can do.

  Application Example 3 In the sheet manufacturing apparatus according to the application example, the first seal portion is in contact with the back surface of the mesh body and the end surface of the first roller outside the suction region. And

  According to this configuration, the load on the mesh body can be suppressed, and intake air from between the first housing portion and the mesh body can be more reliably suppressed.

  Application Example 4 In the sheet manufacturing apparatus according to the application example, the first seal portion is in contact with the back surface of the mesh body outside the region where the suction region is extended in the web conveyance direction, and It is in contact with the outer peripheral surface of the roller.

  According to this configuration, the load on the mesh body can be suppressed, and intake air from between the first housing portion and the mesh body can be more reliably suppressed.

  Application Example 5 In the sheet manufacturing apparatus according to the application example described above, the second is arranged upstream of the first roller in the web conveyance direction and outside the first housing portion and contacts the mesh body. It is provided with a roller and the 2nd seal part which is provided in the 1st housing part and touches the peripheral face of the 2nd roller, It is characterized by the above-mentioned.

  According to this configuration, the space surrounded by the second roller, the first housing portion, and the mesh body is substantially sealed (sealed) by the second seal portion and the second roller even on the upstream side of the web conveyance direction. The Thereby, the intake air from between the second roller and the first housing part is suppressed, and the opening of the drum part and the material that has passed can be stably sucked. As a result, a more uniform sheet can be produced.

  Application Example 6 The sheet manufacturing apparatus according to the application example described above includes a second housing portion that covers the drum portion.

  According to this configuration, the material that has passed through the opening of the drum portion disposed in the second housing portion can be more stably deposited on the deposition surface of the mesh body.

  Application Example 7 In the sheet manufacturing apparatus according to the application example, the outer periphery of the third roller is provided in a third roller that contacts the web conveyed by the mesh body and a second housing portion that covers the drum portion. A third seal portion in contact with the surface, wherein the first roller and the third roller are provided at positions facing each other across the mesh body.

  According to this structure, since the 1st roller and the 3rd roller oppose on both sides of a mesh body, a mesh body does not leave | separate from a 1st roller, but can seal more reliably.

  Application Example 8 The sheet manufacturing apparatus according to the application example includes a second housing portion that covers the drum portion, and the second housing portion includes a first side wall facing the rotation axis direction of the drum portion and a first side wall. Two side walls, a fourth seal portion provided on the first side wall and in contact with the deposition surface of the mesh body, and a fifth seal portion provided on the second side wall and in contact with the deposition surface of the mesh body, The fourth seal part and the fifth seal part are at least partially opposed to the first seal part with the mesh body interposed therebetween.

  According to this structure, since a part of 4th and 5th seal part is arrange | positioned facing a 1st seal part, the sealing performance of the 1st side wall in a 2nd housing part, a 2nd side wall, and a mesh body is provided. Can be secured.

Schematic which shows the structure of the sheet manufacturing apparatus concerning 1st Embodiment. The schematic sectional drawing which shows the structure of the suction part periphery of the deposition part concerning 1st Embodiment. The top view which shows the structure of the suction part periphery of the deposition part concerning 1st Embodiment. The partial perspective view which shows the structure of the suction part periphery of the deposition part concerning 1st Embodiment. The partial perspective view which shows the structure around the deposition part concerning 1st Embodiment. The partial perspective view which shows the structure of the 1st seal | sticker part concerning 2nd Embodiment. Schematic which shows the structure of the suction part periphery of the humidity control part concerning 3rd Embodiment. Schematic which shows the structure of the suction part periphery of the selection part concerning 4th Embodiment. The partial perspective view which shows the structure of the 1st seal | sticker part concerning a modification.

  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, a sheet manufacturing apparatus according to the present embodiment will be described with reference to the drawings. FIG. 1 is a schematic diagram illustrating a configuration of a sheet manufacturing apparatus 100 according to the present embodiment.

  As shown in FIG. 1, 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 deposition unit 60, and 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 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. As the defibrating unit 20, 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. 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 drum unit (sieving) 41 is used. The drum section 41 of the sorting section 40 has a net (filter, screen), fibers or particles (those that pass through the net, the first sort) that are smaller than the mesh opening size, and the mesh opening size. Larger fibers, undefibrated pieces, and lumps (those that do not pass through the net, second selection) 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 drum unit 41 of the sorting unit 40 is a cylinder and is driven to rotate 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 tension 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 configuration of the mesh belt 46, the stretching roller 47, and the suction unit 48 is the same as that of the mesh belt 72, the stretching roller 74, and the suction unit (suction mechanism) 76 as a mesh body of the second web forming unit 70 described later. It is.

  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 with the rotator 49, for example, the variation in the amount of defibrated material per unit time supplied to the deposition unit 60 can be reduced.

  The rotating body 49 is provided in the vicinity of the first web forming portion 45. In the illustrated example, 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 (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, not less than 0.05 mm and not more than 0.5 mm. This is the distance at which the web V can be cut without the mesh belt 46 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. In the illustrated example, 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.

  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 which mixes a 1st selection material and an additive is not specifically limited, It may stir with the blade | wing which rotates at high speed, and uses rotation of a container like a V-type mixer. There may be.

  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 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. The additive supplied from the additive supply unit 52 may be fibrous or powdery.

  In addition to the resin that binds the fibers, the additive supplied from the additive supply unit 52 includes a colorant for coloring the fibers, a fiber agglomeration, and 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 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 drum unit (sieving) 61 is used. The drum unit 61 of the deposition unit 60 has a net (opening), and drops fibers or particles (that pass through the net) included in the mixture that has passed through the mixing unit 50 that are smaller than the size of the mesh opening. 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 depositing 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 unit (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 section 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 part (suction mechanism) 76 is provided below the mesh belt 72 (on the side opposite to the accumulation part 60 side). The suction part (suction mechanism) 76 can generate an airflow directed downward (airflow directed from the accumulation part 60 toward the mesh belt 72). The mixture dispersed in the air by the deposition unit 60 can be sucked onto the mesh belt 72 by the suction unit (suction mechanism) 76. Thereby, the discharge speed from the deposition part 60 can be increased. Furthermore, the suction part (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.

  As described above, the web W is softly inflated and contains a large amount of air by passing through the deposition part 60 and the second web formation part 70 (web formation process). 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 quantity ratio between 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, heat is applied to the mixture of the defibrated material and the additive mixed in the web W to bind the plurality of fibers in the mixture 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. When the web W is pressed, its thickness is reduced, and the density of the web W is increased. As 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 fixing device is used. In the illustrated example, the heating unit 84 includes a pair of heating rollers 86. 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 to the case where the heating unit 84 is configured as a plate-like pressing device (flat plate pressing device). Can do. 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. The cut sheet S is discharged to the discharge unit 96.

  Next, the seal configuration of the suction part will be described. Specifically, the configuration of the suction unit 76 corresponding to the deposition unit 60 will be described. 2A is a schematic cross-sectional view showing a configuration around the suction portion of the deposition portion, FIG. 2B is a plan view showing a configuration around the suction portion of the deposition portion, and FIG. 2C shows a configuration around the suction portion of the deposition portion. It is a partial perspective view. FIG. 3 is a partial perspective view showing the configuration around the deposition part. In addition, in FIG. 2A, it has shown with the structure which abbreviate | omitted the humidity control part.

  2A and 2B, the suction portion 76 has a first housing portion 760 for defining a suction region As on the back surface 72b side of the deposition surface 72a of the mesh belt 72 on which the material is deposited as the web W. doing. The first roller 650 is disposed outside the first housing portion 760 and contacts the back surface 72b of the mesh belt 72. The first seal is provided on the first housing portion 760 and contacts the outer peripheral surface of the first roller 650. Part 610.

  The 1st housing part 760 is a frame which has a wall surface, and has a space part inside. An opening 761 that has no wall surface and faces the back surface 72 b of the mesh belt 72 is provided above the first housing portion 760. Note that a region where the opening 761 is provided corresponds to the suction region As. In the present embodiment, the width of the suction area As (open port 761) (the length dimension L2 corresponding to the width direction of the web W) is equal to the width Wb of the web W.

  The first roller 650 is arranged with the position of the rotation center axis fixed so as to contact the back surface 72 b of the mesh belt 72. Further, the first roller 650 has a central axis of rotation along a direction (the width direction of the web W) that intersects the conveyance direction of the web W. Further, the first roller 650 has a length dimension L1 larger than the dimension Wb in the width direction of the web W (see FIG. 3).

  The first roller 650 is a driven roller that rotates around the rotation center axis (clockwise direction in FIG. 2A) as the mesh belt 72 moves.

  The 1st seal part 610 of this embodiment is constituted by the 1st seal member 610a and the 2nd seal member 610b. The first seal member 610a and the second seal member 610b are pile seals, for example, and are configured by a base portion FL and a plurality of fibers H that are densely planted on one surface side of the base portion FL. is there.

  In the first seal member 610a, the other surface of the base portion FL of the first seal member 610a is joined to the outer surface of the side wall 760a on the downstream side in the transport direction of the web W of the first housing portion 760, and the fibers of the first seal member 610a. The front end portion of H is configured to contact the outer peripheral surface F of the first roller 650.

  Here, at least a part of the first seal member 610 a of the first seal portion 610 is disposed without contacting the back surface 72 b of the mesh belt 72. In the present embodiment, as shown in FIG. 2A, the first seal member 610a is disposed so as to have a space between the entire top surface of the first seal member 610a and the back surface 72b of the mesh belt 72. That is, as shown in FIG. 2B, in the region of the first seal member 610a corresponding to the width of the suction region As (the length dimension L2 corresponding to the width direction of the web W), it does not contact the back surface 72b of the mesh belt 72. Are located apart. Thereby, the space between the first housing portion 760 and the first roller 650 is substantially sealed, and the load on the mesh belt 72 can be reduced. The distance between the first seal member 610a and the back surface 72b of the mesh belt 72 can be set as appropriate depending on the form of the first seal part 610, the form of the first roller 650, and the like.

  Further, the second seal member 610b of the first seal portion 610 is in contact with the back surface 72b of the mesh belt 72 and the end surface 650a of the first roller 650 outside the suction region As. In the present embodiment, as shown in FIGS. 2B and 2C, the second seal member 610b is disposed such that the tip of the fiber H is in contact with a part of the end surface 650a of the first roller 650. Further, the second seal member 610b is disposed such that the tip of the fiber H is in contact with the end surface of the first seal member 610a. Thereby, the space between the both end faces 650a of the first roller 650 and the mesh belt 72 is substantially sealed. The second seal member 610b can ensure sealing performance around both end surfaces 650a of the first roller 650 in the space surrounded by the first roller 650, the first housing portion 760, and the mesh belt 72. .

  As described above, with the above configuration, the space surrounded by the first roller 650, the first housing part 760, and the mesh belt 72 is joined to the first housing part 760 and contacts the first roller 650, The second seal member 610b that is in contact with the first seal member 610a and in contact with the end surface 650a of the first roller 650 is substantially sealed (sealed). Further, since the first seal member 610a is not in contact with the back surface 72b of the mesh belt 72, in the region where the first seal member 610a and the mesh belt 72 are separated from each other, the material does not adhere and become clogged. The load on is reduced.

  A second roller 651 that contacts the back surface 72 b of the mesh belt 72 is disposed on the upstream side of the first roller 650 in the conveyance direction of the web W and outside the first housing portion 760. And the 2nd seal part 620 which is provided in the 1st housing part 760 and touches the outer peripheral surface F of the 2nd roller 651 is arrange | positioned.

  The second roller 651 is disposed so that the position of the rotation center axis is fixed so as to contact the back surface 72 b of the mesh belt 72. Further, the second roller 651 has a rotation center axis along a direction (the width direction of the web W) that intersects the conveyance direction of the web W. The second roller 651 has a length dimension L1 (the same dimension as that of the first roller 650) larger than the dimension Wb (see FIG. 3) in the width direction of the web W.

  The second roller 651 is a driven roller that rotates around the rotation center axis (clockwise in FIG. 2A) as the mesh belt 72 moves.

  The second seal portion 620 includes a first seal member 620a and a second seal member 620b. The first seal member 620a and the second seal member 620b are pile seals, for example, and have the same configuration as described above.

  The first seal member 620a is joined to the outer side surface of the side wall 760b (on the upstream side in the conveyance direction of the web W) where the other surface of the base portion FL of the first seal member 620a faces the side wall 760a of the first housing portion 760. The tip of the fiber H of the first seal member 620 a is configured to contact the outer peripheral surface F of the second roller 651.

  And the 1st seal member 620a of the 2nd seal | sticker part 620 is arrange | positioned away, without contacting the back surface 72b of the mesh belt 72 similarly to the above. In this embodiment, as shown in FIG. 2A, the first seal member 620a is disposed so as to have a space between the entire top surface of the first seal member 620a and the back surface 72b of the mesh belt 72. Thereby, the space between the first housing part 760 and the second roller 651 is almost sealed. The second seal member 620b can ensure the sealing performance around the both end surfaces 651a of the second roller 651 in the space surrounded by the second roller 651, the first housing portion 760, and the mesh belt 72. .

  Further, the second seal member 620b of the second seal portion 620 is in contact with the back surface 72b of the mesh belt 72 and is in contact with the end surface 651a of the second roller 651 outside the suction region As. In the present embodiment, the second seal member 620b is disposed such that the tip of the fiber H is in contact with a part of the end surface 651a of the second roller 651. Further, the second seal member 620b is disposed such that the tip end portion of the fiber H is in contact with the end surface of the first seal member 620a. As a result, the space between the periphery of both end surfaces 651a of the second roller 651 and the mesh belt 72 is substantially sealed.

  As described above, according to the above configuration, the space surrounded by the second roller 651, the first housing part 760, and the mesh belt 72 is joined to the first housing part 760 and is in contact with the second roller 651, and the first seal member 620a. The second seal member 620b that is in contact with the first seal member 620a and in contact with the end surface 651a of the second roller 651 is substantially sealed (sealed). Further, since the first seal member 620a is not in contact with the back surface 72b of the mesh belt 72, in the region where the first seal member 620a and the mesh belt 72 are separated from each other, the material does not adhere and become clogged. The load on is reduced.

  In addition, as shown in FIG. 2A, a deposition unit 60 is disposed on the deposition surface 72 a side of the mesh belt 72. The accumulation unit 60 includes a drum unit 61 (sieving) having a plurality of openings, a second housing unit 600 that covers the drum unit 61, and the like.

  The drum portion 61 has a rotatable cylindrical portion, and a plurality of openings through which a material containing at least fibers passes in the air are formed in the cylindrical portion. The plurality of openings have the same size (area) and are arranged at equal intervals. As a result, the entangled fibers are loosened when passing through the opening, and the material passing through the opening is deposited on the mesh belt 72 (deposition surface 72a) with a uniform thickness and density. The size of the opening and the like can be appropriately set depending on the size and type of the material to be passed. The opening is not limited to punching metal, and may be a wire mesh material.

  The 2nd housing part 600 has the frame 601 and has a space part inside. The drum part 61 is covered (enclosed) by the second housing part 600 by being disposed in the frame body 601. In addition, the lower portion of the second housing portion 600 has no wall surface and is provided with an opening 602. The opening 602 is disposed so as to face the opening 761 of the first housing part 760. Thereby, the inside of the second housing part 600 can be sucked almost uniformly, and the material that has passed through the opening of the drum part 61 arranged in the second housing part 600 is more stably deposited on the mesh body. be able to.

  Also, a third roller 652 that contacts the web W conveyed by the mesh belt 72, a third seal portion 630 that is provided in the second housing portion 600 that covers the drum portion 61, and that contacts the outer peripheral surface F of the third roller 652; , Is arranged.

  The third roller 652 is provided on the downstream side in the transport direction of the web W of the second housing portion 600. The third seal portion 630 is provided on the side wall 600 a on the downstream side in the conveyance direction of the web W of the second housing portion 600 and is in contact with the outer peripheral surface F of the third roller 652. Side wall 600a includes an outer surface, an inner surface, and an end surface (a surface facing mesh belt 72). In addition, the 3rd seal | sticker part 630 of this embodiment is provided in the outer surface of the side wall 600a.

  As shown in FIG. 3, the third roller 652 has a rotation center axis along a direction (the width direction of the web W) that intersects the conveyance direction of the web W. Further, the third roller 652 has a length larger than the width dimension (the length in the width direction of the web W) of the frame body 601 of the second housing portion 600. That is, the length of the third roller 652 in the rotation axis direction is larger than the dimension Wb in the width direction of the web W and is equal to the length L1 of the first roller 650 in the rotation axis direction.

  The third roller 652 is connected to a drive unit (not shown) such as a motor that drives the third roller 652. Then, the third roller 652 can be rotated about the rotation center axis (counterclockwise direction in FIG. 2A) by driving the drive unit. The driving speed (circumferential speed) of the third roller 652 is set to be faster than the conveying speed (moving speed) of the web W by the mesh belt 72. In other words, the third roller 652 is set so that its peripheral speed is faster than the conveyance speed (movement speed) of the web W by the mesh belt 72. As a result, the web W can be easily pulled in the transport direction, the occurrence of the stay of the web W in the second housing portion 600, the jumping of the web W, and the like can be reduced, and the web W can be transported stably. The third roller 652 is provided such that the rotation center axis thereof is positioned higher than the top height (thickness) of the web W deposited on the upstream side in the transport direction with respect to the third roller 652. Yes. When the rotation axis of the third roller 652 is positioned lower than the height of the web W accumulated on the upstream side in the conveyance direction of the third roller 652, it becomes difficult to convey the upper portion of the accumulated web W, This is because the web W is easily retained in the housing portion 600.

  The third roller 652 is movable in the vertical direction (direction intersecting the deposition surface 72a of the mesh belt 72 or the thickness direction of the web W) and is moved downward (mesh belt) by a biasing member (not shown). 72 side).

  Further, the third roller 652 and the first roller 650 are disposed to face each other with the mesh belt 72 interposed therebetween. The first roller 650 is arranged so that the position of the rotation center axis is fixed so as to contact the back surface 72 b of the mesh belt 72. As a result, the third roller 652 is supported by the first roller 650 via the web W and the mesh belt 72 even when a load is applied in the direction of gravity. Further, the position of the mesh belt 72 is regulated by the first roller 650. Accordingly, the mesh belt 72 does not fall downward due to the pressing force or gravity by the third roller 652, and the posture of the accumulation surface 72a of the mesh belt 72 is maintained in a substantially horizontal direction.

  Further, a fourth roller 653 is arranged on the upstream side of the third roller 652 in the conveyance direction of the web W. A sixth seal portion 640 that contacts the fourth roller 653 is provided on the side wall 600b (on the upstream side in the conveyance direction of the web W) facing the side wall 600a of the second housing portion 600. The sixth seal portion 640 of the present embodiment is provided on the outer surface of the side wall 600b. The sixth seal portion 640 and the fourth roller 653 are in contact with each other.

  As shown in FIG. 3, the fourth roller 653 has a rotation center axis along a direction (width direction of the web W) that intersects the web W conveyance direction. The fourth roller 653 has a length larger than the width dimension of the frame body 601 of the second housing portion 600 (the length in the width direction of the web W). That is, the length of the third roller 652 in the rotation axis direction is larger than the dimension Wb of the web W in the width direction and is equal to the length L1 of the second roller 651 in the rotation axis direction.

  The fourth roller 653 is connected to a drive unit (not shown) such as a motor that drives the fourth roller 653. Then, the fourth roller 653 can be rotated around the rotation center axis (counterclockwise in FIG. 2B) by driving the drive unit. The drive speed (circumferential speed) of the fourth roller 653 is set to a speed equivalent to the transport speed (movement speed) of the web W by the mesh belt 72. And the 4th roller 653 is arrange | positioned so that the deposition surface 72a of the mesh belt 72 may be contact | connected.

  Further, the fourth roller 653 and the second roller 651 are disposed to face each other with the mesh belt 72 interposed therebetween. The second roller 651 is disposed such that the position of its rotation center axis is fixed so as to contact the back surface 72b of the mesh belt 72. Accordingly, the fourth roller 653 is supported by the second roller 651 via the web W and the mesh belt 72 even when a load is applied in the direction of gravity. Further, the position of the mesh belt 72 is regulated by the second roller 651. Accordingly, the mesh belt 72 does not fall downward due to the pressing force or gravity by the fourth roller 653, and the posture of the deposition surface 72a is maintained in a substantially horizontal direction.

  Further, as shown in FIG. 3, the second housing portion 600 that covers the drum portion 61 has a first side wall 600 c and a second side wall 600 d that are opposed to each other in the rotation axis direction of the drum portion 61. The first side wall 600c is provided with a fourth seal portion 680 that contacts the deposition surface 72a of the mesh belt 72. The second side wall 600d is provided with a fifth seal portion 690 that contacts the accumulation surface 72a of the mesh belt 72. The fourth and fifth seal portions 680 and 690 are pile seals, and the configuration is the same as the above configuration.

  The fourth seal portion 680 and the fifth seal portion 690 are at least partially opposed to each other with the first seal portion 610 and the mesh belt 72 interposed therebetween. Specifically, one end portion P (see FIG. 3) of the fourth seal portion 680 and one second seal member 610b (see FIG. 2B) of the first seal portion 610 are arranged to face each other. Further, one end portion P of the fifth seal portion 690 and the other second seal member 610b of the first seal portion 610 are disposed to face each other. Further, the other end portion P ′ (see FIG. 3) of the fourth seal portion 680 and one second seal member 620b (see FIG. 2B) of the second seal portion 620 are arranged to face each other. Further, the other end portion P ′ of the fifth seal portion 690 and the other second seal member 620 b of the second seal portion 620 are arranged to face each other. Thereby, the sealing performance of the mesh belt 72 with the 1st side wall 600c and the 2nd side wall 600d in the 2nd housing part 600 is securable.

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

  A space surrounded by the first roller 650, the second roller 651, the first housing part 760, and the mesh belt 72 is substantially formed by the first seal part 610, the first roller 650, the second seal part 620, and the second roller 651. Sealed. Accordingly, unnecessary intake air excluding the intake air from the second housing portion 600 is suppressed, and the material that has passed through the opening of the drum portion 61 can be stably sucked. As a result, a more uniform sheet S can be produced.

Further, since the first seal member 610a of the first seal portion 610 is separated without coming into contact with the back surface 72b of the mesh belt 72, problems such as clogging of materials are reduced, and the load on the mesh belt 72 can be suppressed. The first seal member 620a of the second seal portion 620 can obtain the same effect.
Further, since the second seal member 610b of the first seal portion 610 is in contact with the back surface 72b of the mesh belt 72 and is in contact with the end surface 650a of the first roller 650, the first roller 650, the first housing portion 760, and the mesh. In the space surrounded by the belt 72, intake air from the vicinity of the end surface 650a of the first roller 650 can be more reliably suppressed. The second seal member 620b of the second seal portion 620 can obtain the same effect.

(Second Embodiment)
Next, a second embodiment will be described. Since the basic configuration of the sheet manufacturing apparatus is the same as that of the first embodiment, description thereof will be omitted, and a different configuration, that is, the configuration of the first seal portion will be described. FIG. 4 is a partial perspective view showing a configuration around the suction part of the deposition part according to the present embodiment.

  As shown in FIG. 4, the first seal portion 660 of the present embodiment is in contact with the back surface 72 b of the mesh belt 72 outside the region where the suction region As is extended in the conveyance direction of the web W, and the first roller 650. It is in contact with the outer peripheral surface F.

  Specifically, the first seal portion 660 includes a first seal member 660a and a second seal member 660b. The first seal member 660a and the second seal member 660b are pile seals, for example, and have the same configuration as described above.

  In the first seal member 660a, the other surface of the base portion FL of the first seal member 660a is joined to the outer surface of the side wall 760a of the first housing portion 760, and the tip of the fiber H of the first seal member 660a is the first roller. It is comprised so that the outer peripheral surface F of 650 may be touched. The first seal member 660a is arranged so as to have a space between the entire top surface of the first seal member 660a and the back surface 72b of the mesh belt 72. That is, in the area | region of the 1st seal member 660a corresponding to the width | variety (length dimension L2 corresponding to the width direction of the web W) of the suction area | region As, it arrange | positions away without contacting the back surface 72b of the mesh belt 72. FIG. Thereby, the space between the first housing part 760 and the first roller 650 is substantially sealed.

  Further, the second seal member 660b of the first seal portion 660 is in contact with the back surface 72b of the mesh belt 72 outside the region where the suction region As is extended in the conveyance direction of the web W, and at both ends of the first roller 650. It is in contact with the outer peripheral surface F. In the present embodiment, the tip of the fiber H of the second seal member 660b is disposed so as to contact the outer peripheral surface F of the first roller 650. Further, the second seal member 660b is disposed so as to contact both end faces of the first seal member 660a. The second seal member 660b can ensure sealing performance around both ends of the first roller 650 in the space surrounded by the first roller 650, the first housing portion 760, and the mesh belt 72.

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

  A space surrounded by the first roller 650, the first housing part 760, and the mesh belt 72 is in contact with the first seal member 660a joined to the first housing part 760 and in contact with the first roller 650, and in contact with the first seal member 660a. At the same time, it is substantially sealed (sealed) by the second seal member 660b in contact with both end portions of the outer peripheral surface F of the first roller 650. Further, since the first seal member 660a is not in contact with the back surface 72b of the mesh belt 72, in the region where the first seal member 660a and the mesh belt 72 are separated from each other, the material does not adhere and become clogged. The load on is reduced.

(Third embodiment)
Next, a third embodiment will be described. In 1st and 2nd embodiment, although the structure which applied the 1st seal | sticker part etc. to the suction part corresponding to a deposition part was demonstrated, in this embodiment, a 1st seal | sticker part etc. are applied to the suction part of a humidity control part. An example of the configuration will be described. FIG. 5 is a schematic view showing a configuration around the suction unit of the humidity control unit. Note that FIG. 5 shows a configuration in which the deposition portion is omitted.

  The humidity control unit 78 humidifies the web W deposited by the deposition unit 60. The humidity control section 78 includes a first airflow generation section 176 as a suction section having a third housing section 177, a generator 170, a fourth housing section 172, and the like.

  The generator 170 is provided on the deposition surface 72 a side of the mesh belt 72. In FIG. 5, the generator 170 is provided outside the region surrounded by the mesh belt 72. The generator 170 generates droplets or high humidity gas. The generator 170 may generate droplets by ultrasonic waves. For example, the generator 170 may apply ultrasonic waves having a frequency of 20 kHz to several MHz to the solution (water) to generate minute droplets of several nm to several μm. The generator 170 may generate water vapor to generate a high humidity gas. Here, “high humidity gas” refers to a gas having a relative humidity of 70% to 100%.

  The fourth housing part 172 is connected to the generator 170 via the pipe 171. The fourth housing part 172 is provided on the deposition surface 72a side. The fourth housing part 172 has, for example, a box shape and has an opening facing the deposition surface 72 a of the mesh belt 72. The fourth housing part 172 defines a humidification region for humidifying the web W. The humidity control unit 78 can humidify the web W deposited on the deposition surface 72a in the humidification region.

  The first airflow generation unit 176 is provided on the back surface 72 b side of the mesh belt 72. In FIG. 5, the first airflow generation unit 176 is provided inside a region surrounded by the mesh belt 72. The first airflow generation part 176 is disposed to face the fourth housing part 172 with the mesh belt 72 interposed therebetween. The first airflow generation unit 176 generates an airflow that passes through the web W in the thickness direction. The airflow is an airflow in a direction intersecting with the deposition surface 72a, for example, an airflow in a direction orthogonal to the deposition surface 72a. The humidity control unit 78 can supply droplets or high-humidity gas to the web W by the air flow generated by the first air flow generation unit 176. Due to the airflow, for example, a droplet or a high-humidity gas passes through the web W in the thickness direction. The mass of the droplets supplied to the web W by the humidity adjusting unit 78 is, for example, 0.1% or more and 3% or less of the mass of the web W per unit volume of the web W. In the illustrated example, the first air flow generation unit 176 is a suction device (first suction device) that sucks the droplets generated by the generator 170 or the high-humidity gas from the back surface 72b side. The first air flow generation unit 176 includes a third housing unit 177 that is disposed below the mesh belt 72 and has an opening facing the back surface 72b. A suction blower that sucks air inside the third housing portion 177 is connected.

  A first roller 650 that contacts the back surface 72 b of the mesh belt 72 is disposed outside the third housing portion 177. The third housing portion 177 is provided with a first seal portion 610 that contacts the outer peripheral surface F of the first roller 650. In addition, since the structure of the 1st roller 650 and the 1st seal | sticker part 610 is the same as the structure of 1st Embodiment, description is abbreviate | omitted.

  A second roller 651 that contacts the back surface 72 b of the mesh belt 72 is disposed on the upstream side of the first roller 650 in the conveyance direction of the web W and outside the third housing portion 177. And the 2nd seal part 620 which is provided in the 3rd housing part 177 and touches the outer peripheral surface F of the 2nd roller 651 is arrange | positioned. In addition, since the structure of the 2nd roller 651 and the 2nd seal | sticker part 620 is the same as the structure of 1st Embodiment, description is abbreviate | omitted.

  A third roller 652 that abuts on the web W conveyed by the mesh belt 72 is provided. Further, a third seal portion 630 that is provided on the side wall 172a on the downstream side in the conveyance direction of the web W of the fourth housing portion 172 and is in contact with the outer peripheral surface F of the third roller 652 is disposed. Note that the configurations of the third roller 652 and the third seal portion 630 are the same as the configurations of the first embodiment, and thus description thereof is omitted. Further, the third roller 652 is provided at a position facing the first roller 650 with the mesh belt 72 interposed therebetween. Since the first roller 650 is disposed so that the position of the rotation center axis is fixed so as to contact the back surface 72b of the mesh belt 72, even if a load is applied in the direction of gravity, the third roller 652 has a web W and a mesh. It is supported by the first roller 650 via the belt 72. Further, the position of the mesh belt 72 is regulated by the first roller 650, and the mesh belt 72 does not fall downward due to the pressing force or gravity by the third roller 652, and the accumulated surface 72a maintains the posture in the substantially horizontal direction. Is done.

  Further, a fourth roller 653 is arranged on the upstream side of the third roller 652 in the conveyance direction of the web W. A sixth seal portion 640 that contacts the fourth roller 653 is provided on the side wall 172b (on the upstream side in the conveyance direction of the web W) facing the side wall 172a of the fourth housing portion 172. The sixth seal portion 640 is provided on the outer surface of the side wall 172b. The sixth seal portion 640 and the fourth roller 653 are in contact with each other. In addition, since the structure of the 4th roller 653 and the 6th seal | sticker part 640 is the same as that of the structure of 1st Embodiment, description is abbreviate | omitted. The fourth roller 653 is provided at a position facing the second roller 651 across the mesh belt 72. Since the second roller 651 is disposed so that the position of the rotation center axis is fixed so as to contact the back surface 72b of the mesh belt 72, the fourth roller 653 is not affected by the web W and the mesh even when a load is applied in the direction of gravity. It is supported by the second roller 651 via the belt 72. Further, the position of the mesh belt 72 is regulated by the second roller 651, and the mesh belt 72 does not drop downward due to the pressing force or gravity by the fourth roller 653, and the accumulated surface 72a maintains the posture in the substantially horizontal direction. Is done.

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

  A space surrounded by the first roller 650, the second roller 651, the third housing part 177, and the mesh belt 72 is substantially formed by the first seal part 610, the first roller 650, the second seal part 620, and the second roller 651. Sealed. Accordingly, unnecessary intake air excluding intake air from the fourth housing portion 172 is suppressed, and stable humidity adjustment can be performed on the web W.

  Further, since the first seal member 610a of the first seal portion 610 is separated without coming into contact with the back surface 72b of the mesh belt 72, problems such as clogging of materials are reduced, and the load on the mesh belt 72 can be suppressed. The first seal member 620a of the second seal portion 620 can obtain the same effect. Further, the adhesion of the material to the first seal portion 610 is suppressed, and the load on the mesh belt 72 is reduced. In addition, in the space surrounded by the first roller 650, the third housing part 177, and the mesh belt 72 by the second seal member 610 b of the first seal part 610, the sealing performance around both ends of the first roller 650 Can be secured. The second seal member 620b of the second seal portion 620 can obtain the same effect.

(Fourth embodiment)
Next, a fourth embodiment will be described. In 1st and 2nd embodiment, although the structure which applied the 1st seal | sticker part etc. to the suction part corresponding to a deposition part was demonstrated, in this embodiment, a 1st seal | sticker part etc. are made into the suction part corresponding to a selection part. An applied configuration example will be described. FIG. 6 is a schematic diagram showing a configuration around the suction unit corresponding to the selection unit.

  As shown in FIG. 6, a suction part (suction mechanism) 48 is provided on the back surface 46 b side of the mesh belt 46. The suction portion 48 includes a fifth housing portion 480 that is disposed below the mesh belt 46 and has an opening 481 that faces the back surface 46b. Further, the sixth housing part 400 is arranged at a position facing the fifth housing part 480 with the mesh belt 46 interposed therebetween. The sixth housing part 400 has an opening 404 facing the deposition surface 46 a of the mesh belt 46. A drum portion 41 is disposed inside the sixth housing portion 400.

  A first roller 650 that contacts the back surface 46 b of the mesh belt 46 is disposed outside the fifth housing portion 480. The fifth housing part 480 is provided with a first seal part 610 that contacts the outer peripheral surface F of the first roller 650. In addition, since the structure of the 1st roller 650 and the 1st seal | sticker part 610 is the same as the structure of 1st Embodiment, description is abbreviate | omitted.

  A second roller 651 that contacts the back surface 46 b of the mesh belt 46 is disposed on the upstream side of the first roller 650 in the conveyance direction of the web V and outside the fifth housing portion 480. And the 2nd seal part 620 which is provided in the 5th housing part 480 and contact | connects the outer peripheral surface F of the 2nd roller 651 is arrange | positioned. In addition, since the structure of the 2nd roller 651 and the 2nd seal | sticker part 620 is the same as the structure of 1st Embodiment, description is abbreviate | omitted.

  A third roller 652 that abuts on the web V conveyed by the mesh belt 46 is provided. Further, a third seal portion 630 that is in contact with the outer peripheral surface F of the third roller 652 is disposed on the downstream side of the sixth housing portion 400 in the conveyance direction of the web V. Note that the configurations of the third roller 652 and the third seal portion 630 are the same as the configurations of the first embodiment, and thus description thereof is omitted. The third roller 652 is provided at a position facing the first roller 650 across the mesh belt 46. Since the first roller 650 is disposed so that the position of the rotation center axis is fixed so as to be in contact with the back surface 46b of the mesh belt 46, the third roller 652 has the web V and the mesh even when a load is applied in the direction of gravity. The first roller 650 is supported via the belt 46. Further, the position of the mesh belt 46 is regulated by the first roller 650, and the mesh belt 46 does not fall downward due to the pressing force or gravity by the third roller 652, and the accumulated surface 46a maintains the posture in the substantially horizontal direction. Is done.

  Further, a fourth roller 653 is arranged on the upstream side of the third roller 652 in the conveyance direction of the web V. A sixth seal portion 640 that is in contact with the fourth roller 653 is provided on the side wall 400b (on the upstream side in the conveyance direction of the web W) facing the side wall 400a of the sixth housing portion 400. The sixth seal portion 640 is provided on the outer surface of the side wall 400b. The sixth seal portion 640 and the fourth roller 653 are in contact with each other. In addition, since the structure of the 4th roller 653 and the 6th seal | sticker part 640 is the same as that of the structure of 1st Embodiment, description is abbreviate | omitted. Further, the fourth roller 653 is provided at a position facing the second roller 651 with the mesh belt 46 interposed therebetween. Since the second roller 651 is disposed so that the position of the rotation center axis is fixed so as to contact the back surface 46b of the mesh belt 46, the fourth roller 653 does not move the mesh belt 46 even when a load is applied in the direction of gravity. And supported by the second roller 651. For this reason, the position of the mesh belt 46 is regulated by the second roller 651. The mesh belt 46 does not fall downward due to the pressing force or gravity by the fourth roller 653, and the deposition surface 46a maintains the posture in the substantially horizontal direction. Is done.

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

  A space surrounded by the first roller 650, the second roller 651, the fifth housing part 480, and the mesh belt 46 is almost formed by the first seal part 610, the first roller 650, the second seal part 620, and the second roller 651. Sealed. Thereby, unnecessary intake air excluding intake air from the sixth housing portion 400 is suppressed, and the material that has passed through the opening of the drum portion 41 can be stably sucked.

  In addition, since the first seal member 610a of the first seal portion 610 is separated without contacting the back surface 46b of the mesh belt 46, problems such as clogging of materials are reduced, and the load on the mesh belt 46 can be suppressed. The first seal member 620a of the second seal portion 620 can obtain the same effect. Further, the adhesion of the material to the first seal portion 610 is suppressed, and the load on the mesh belt 46 is reduced. In addition, by the second seal member 610b of the first seal portion 610, the sealing performance around the both end portions of the first roller 650 in the space surrounded by the first roller 650, the fifth housing portion 480, and the mesh belt 46 is provided. Can be secured. The second seal member 620b of the second seal portion 620 can obtain the same effect.

  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) The second seal member 610b of the first seal portion 610 according to the first embodiment is composed of a base portion FL and a plurality of fibers H densely planted on one surface side of the base portion FL. However, the present invention is not limited to this configuration. FIG. 7 is a partial perspective view showing the configuration of the first seal portion according to this modification. As shown in FIG. 7, the 1st seal part 670 concerning this modification is comprised by the 1st seal member 670a and the 2nd seal member 670b. The configuration of the first seal member 670a is the same as the configuration according to the first embodiment. The second seal member 670b includes a receiving portion G, a base portion FL joined to the receiving portion G, and a plurality of densely planted surfaces opposite to the surface joined to the receiving portion G of the base portion FL. The fiber H is comprised. The receiving part G is a plastic member such as POM (polyacetal). The second seal member 670b is disposed such that the receiving portion G is in contact with the first seal member 670a and the fiber H is in contact with the end surface 650a of the first roller 650. According to this modification, since the receiving part G is provided in the second seal member 670b, a highly versatile pile seal in which the length of the fiber H is relatively short can be used.

  (Modification 2) In the 3rd and 4th embodiment, although the 1st seal part 610 concerning a 1st embodiment was applied, it is not limited to this but it replaces with this and the 1st seal concerning a 2nd embodiment. Part 660 may be applied. The form of the first seal portion 660 may be applied to the second, third, and sixth seal portions 620, 630, and 640 in the same manner. Even if it does in this way, the same effect as the above can be acquired.

  (Modification 3) In the third and fourth embodiments, the fourth and fifth seal portions 680 and 690 according to the first embodiment may be applied. In this way, the same effect as described above can be obtained.

  41 ... Drum part, 46 ... Mesh belt (mesh body), 46a ... Deposition surface, 46b ... Back surface, 47 ... Stretching roller, 61 ... Drum part, 72 ... Mesh belt (mesh body), 72a ... Deposition surface, 72b ... Back surface, 74 ... tension roller, 76 ... suction part (suction mechanism), 78 ... humidity control part, 100 ... sheet manufacturing apparatus, 172 ... fourth housing part, 177 ... third housing part, 400 ... sixth housing part, 480 ... 5th housing part, 600 ... 2nd housing part, 610 ... 1st seal part, 610a ... 1st seal member, 610b ... 2nd seal member, 620 ... 2nd seal part, 620a ... 1st seal member, 620b ... 2nd seal member, 630 ... 3rd seal part, 640 ... 6th seal part, 650 ... 1st roller, 650a ... End face, 651 ... 2nd roller, 651a ... Surface, 652 ... third roller, 653 ... fourth roller, 680 ... fourth seal portion, 690 ... fifth seal portion, 760 ... first housing portion, F ... outer peripheral surface.

Claims (8)

A drum portion having a plurality of openings;
A mesh body that has a deposition surface on which a material containing fibers that have passed through the opening is deposited as a web, and that transports the deposited web;
A suction part that sucks the material that has passed through the opening onto the mesh body, the suction part having a first housing part for defining a suction region on the back side of the deposition surface of the mesh body;
A first roller that contacts the back surface of the mesh body disposed outside the first housing portion;
A first seal portion provided in the first housing portion and in contact with an outer peripheral surface of the first roller;
A sheet manufacturing apparatus comprising: In the sheet manufacturing apparatus according to claim 1,
The sheet manufacturing apparatus according to claim 1, wherein at least a part of the first seal part is separated without contacting the back surface of the mesh body. In the sheet manufacturing apparatus according to claim 2,
The sheet manufacturing apparatus according to claim 1, wherein the first seal portion is in contact with a back surface of the mesh body and is in contact with an end surface of the first roller outside the suction region. In the sheet manufacturing apparatus according to claim 2,
The first seal portion is in contact with the outer surface of the first roller and is in contact with the back surface of the mesh body outside the region where the suction region is extended in the web conveyance direction. manufacturing device. In the sheet manufacturing apparatus according to any one of claims 1 to 4,
A second roller that is disposed upstream of the first roller in the web conveyance direction and is disposed outside the first housing part and contacts the mesh body;
A sheet manufacturing apparatus comprising: a second seal portion provided in the first housing portion and in contact with an outer peripheral surface of the second roller. In the sheet manufacturing apparatus according to any one of claims 1 to 5,
A sheet manufacturing apparatus comprising a second housing portion covering the drum portion. In the sheet manufacturing apparatus according to any one of claims 1 to 5,
A third roller that contacts the web conveyed by the mesh body;
A third seal portion provided in a second housing portion covering the drum portion and in contact with an outer peripheral surface of the third roller;
The sheet manufacturing apparatus, wherein the first roller and the third roller are provided at positions facing each other across the mesh body. In the sheet manufacturing apparatus according to claim 3 or 4,
A second housing portion covering the drum portion;
The second housing part is
A first side wall and a second side wall facing the rotation axis direction of the drum portion;
A fourth seal portion provided on the first side wall and in contact with the deposition surface of the mesh body;
A fifth seal portion provided on the second side wall and in contact with the deposition surface of the mesh body;
Have
At least a part of the fourth seal portion and the fifth seal portion is opposed to the first seal portion with the mesh body interposed therebetween.

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