JP2017012980A - Composite sheet processing device, and method for reproducing powder and fiber - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and a device for pulverizing a composite material containing a fiber and a resin efficiently.SOLUTION: A composite sheet processing device 100 comprises: a rotary shaft 21; plural plates (striking members) 24 which are respectively fixed to the rotary shaft; a guide plate 25 having an opposite face 25i facing an end face 24e of a radial direction outer side of rotation of the plural plates 24 which are rotated around the rotary shaft 21; and a pair of rolls (feed section) 40 which feed sheet 1 containing a fiber and a resin between the opposite face 25i of the guide plate 25 and rotated plural plates 24 while sandwiching the sheet from both sides thereof. Plural projections 25p are formed on the opposite face 25i of the guide plate 25.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a method for regenerating a sheet containing a resin and fibers.

  Conventionally, a method of pulverizing a composite material containing fibers and a resin is known.

JP 2007-229603 A JP 2009-50757 A

  However, even with conventional apparatuses and methods, it is not easy to efficiently separate a composite material containing fibers and resins into fibers and resins. In particular, it is required to process a sheet containing fibers and resin as it is. The present invention has been made in view of the above problems, and an object of the present invention is to efficiently separate a sheet containing a fiber and a resin, for example, a sheet having a multilayer structure in which a fiber layer and a resin layer are laminated, into a fiber and a resin. And

  The composite sheet processing apparatus according to the present invention includes a rotating shaft, a plurality of striking members fixed to the rotating shaft, a radially outer end face of the plurality of striking members rotated around the rotating shaft, and A guide plate having an opposing curved opposing surface, and a supply unit that supplies a sheet containing resin and fibers between the opposing surface of the guide plate and the plurality of striking members to be rotated. The supply unit includes a pair of sandwiching members that sandwich the sheet from both sides in the thickness direction, at least one of the sandwiching members rotates to supply the sheet, and further, the opposing surface of the guide plate A large number of protrusions are formed.

  According to the present invention, since the sheet is struck from both sides by the protrusions on the opposing surface of the guide plate and the striking member, the resin can be efficiently separated from the fiber, and the fiber and the resin powder separated from the fiber are separated. can get. In addition, since the supply unit sandwiches the sheet from both sides in the thickness direction with at least one of the sandwiching members rotating to supply the sheet, the long sheet is fed at a substantially constant speed between the striking member and the guide plate. A long sheet can be processed without unevenness by suppressing the sheet from being wound around a rotating shaft or the like.

  Here, each of the plurality of striking members is a plate, and further, the main surface of each of the plates faces the rotation direction of the striking member, and the end surface of each of the plates faces the facing surface of the guide plate. Can be arranged to

  According to this, in addition to being able to process a wide sheet | seat efficiently, discharge | emission of the resin powder isolate | separated using the main surface of a board also becomes easy.

  Further, when viewed from the direction of the rotation axis, the plate has a plurality of end faces opposed to the guide plate, and the end faces are displaced from each other in the rotational radius direction, or there is a gap between the end faces. Can have.

  According to this, even a thick sheet or a multilayer structure sheet can be suitably separated into resin powder and fibers.

  Further, at least one of the pinching members can be a roll or an endless belt.

  The apparatus may further include a pressing unit that presses the sheet with a member having a protrusion before being supplied between the opposing surface of the guide plate and the plurality of striking members to be rotated.

  According to this, since a fine crack can be generated between the resin and the fiber in the sheet before being struck by the striking member, even a thick sheet can be more preferably separated into the resin powder and the fiber.

  An elastic material layer may be provided on a surface opposite to the facing surface of the guide plate. According to this, noise and vibration during processing can be suppressed.

  The method of regenerating resin powder and fibers from a sheet containing fibers and resin according to the present invention includes a step of rotating a rotating shaft to which a plurality of striking members are fixed, and a guide plate having a curved facing surface, The step of holding the opposing surface so as to face the radially outer end face of the plurality of striking members to be rotated, between the plurality of striking members to be rotated and the opposing surface of the guide plate, Supplying a sheet containing fiber and resin. In the supplying step, the sheet is supplied by rotating at least one of the pinching members in a state where the sheet is pinched by a pair of pinching members from both sides in the thickness direction. A large number of protrusions are formed.

  Here, each of the striking members is a plate, and the main surface of each of the plates is directed in the rotation direction of the striking member, and the end surface of each of the plates is opposed to the facing surface of the guide plate. it can.

  Further, when viewed from the direction of the rotation axis, the plate has a plurality of end faces opposed to the guide plate, and the end faces are displaced from each other in the rotational radius direction, or there is a gap between the end faces. Can have.

  Further, the at least one pinching member can be a roll or an endless belt.

  An elastic material layer may be provided on the back surface of the opposing surface of the guide plate.

  Furthermore, the method may further include a pressing step of pressing the sheet with a member having a protrusion before supplying the sheet between the opposing surface of the guide plate and the rotated striking members.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to isolate | separate the sheet | seat containing a fiber and resin into a fiber and resin efficiently.

FIG. 1 is a schematic cross-sectional view of a composite sheet processing apparatus according to an embodiment. FIG. 2 is an enlarged perspective view of the rotating shaft 21, the pedestal 22, and the plate 24 of FIG. FIG. 3 is a perspective view of a part of the guide plate 25. 4A to 4D are schematic views of the plate 24 in various embodiments as viewed from the direction of the rotating shaft 21. FIG. FIG. 5 is a cross-sectional view of a cylinder showing another aspect of the protrusion of the cylinder. FIG. 6 is a schematic cross-sectional view of a composite sheet processing apparatus according to another embodiment.

  A composite sheet processing apparatus according to an embodiment of the present invention will be described with reference to the drawings.

  The composite sheet processing apparatus 100 according to the present embodiment mainly includes a rotating body 20, a cylindrical body 30 that covers the rotating body 20, and a pair of rolls (supplying units) 40 that supply the sheet 1 containing resin and fibers into the cylindrical body 30. , 40 and a pressing part 58. The cylindrical body 30 includes a guide plate 25 and a cover 26.

  As shown in FIGS. 1 and 2, the rotating body 20 includes a rotating shaft 21, a pedestal 22, and a plurality of plates 24 fixed to the rotating shaft 21 via the pedestal 22. As shown in FIG. 2, a plurality of disk-shaped pedestals 22 are fixed to the rotating shaft 21. The rotating shaft 21 passes through the center of each pedestal 22 vertically, and a predetermined gap is formed between the pedestals 22. Although illustration is omitted, a motor is connected to the rotating shaft 21, and the rotating body 20 is rotated counterclockwise (direction A in FIG. 1). The rotational speed of the rotary shaft can be set so that the peripheral speed of the end surface 24e of the plate is 30 to 100 m / s.

  As shown in FIG. 2, the plate (striking member) 24 has a rectangular flat plate shape, a pair of opposed end surfaces 24 e and 24 f of the plate 24 are arranged in parallel with the axial direction of the rotating shaft 21, and one end surface 24 e. Is fixed to the pedestal 22 so that the other end surface 24f of the plate 24 faces the rotation shaft 21. As shown in FIG. 1, the end surface 24 e of the rotated plate 24 faces the facing surface 25 i of the guide plate 25 and the facing surface 26 i of the cover 26 as viewed from the axial direction of the rotating shaft 21. Further, when viewed from the axial direction of the rotary shaft 21, each plate 24 is fixed to the base 22 so as to extend radially in the rotational radius direction, and the two adjacent plates 24 are arranged at equal angular intervals. Yes. Examples of angles are 18 ° (20 equal parts) and 15 ° (24 equal parts). The main surface 24 m of the plate 24 faces the rotation direction A of the plate 24.

  In FIG. 2, the axial length D1 of the plate 24 can be set as appropriate in accordance with the width of the sheet 1 to be processed. An example of the axial length D1 of the plate 24 is 100 to 1000 mm. Further, the distance from the end surface 24e of the plate 24 to the rotating shaft 21, that is, the rotation radius R1 of the end surface 24e can be set to 200 to 500 mm, for example. The length D2 from the end surface 24e of the plate 24 to the pedestal 22 can be set to 30 to 50 mm, for example.

  The thickness D3 of the plate 24 can be set to, for example, 5 to 10 mm. Moreover, the example of the material of the board 24 is metal materials, such as stainless steel, steel (tool steel etc.), a cemented carbide.

  As shown in FIG. 1, the cylindrical body 30 having the guide plate 25 and the cover 26 has a substantially cylindrical shape surrounding the rotating body 20, and the opposing surface 25i of the guide plate 25 and the opposing surface 26i of the cover 26 rotate. It faces the end face 24e of the plate 24. The opposing surface 25i of the guide plate 25 and the opposing surface 26i of the cover 26 each have a curved shape that forms part of the inner surface of the cylinder. Although illustration is omitted, both side surfaces of the cylindrical body 30 are closed by plates.

  As shown in FIGS. 1 and 3, the opposing surface 25i of the guide plate 25 and the opposing surface 26i of the cover 26 each have a number of protrusions 25p. The height of the protrusion 25p can be set to 0.5 to 1.5 mm, for example. The pitch of the protrusions 25p, that is, the distance between the highest points of the adjacent protrusions 25p can be set to 1 to 2 mm.

  In the present embodiment, as shown in FIG. 3, each protrusion 25p has a triangular cross section and extends in a direction parallel to the rotation axis 21, that is, in parallel with the end face 24e of the plate 24. Such a protrusion 25p Is provided on the opposing surface 25i of the guide plate 25 and the opposing surface 26i of the cover 26 in the circumferential direction.

  In FIG. 1, the distance between the tip of the protrusion 25p and the end surface 24e of the plate 24 can be set to 0.5 to 3 mm, for example.

  The angular range θ of the portion where the end surface 24e of the rotating plate 24 and the protrusion 25p of the facing surface 25i of the guide plate 25 face each other at 360 ° around the rotation shaft 21 is preferably at least 45 ° or more. 60 ° or more, more preferably 90 ° or more. There is no particular upper limit, but it can be 180 ° or less.

  As shown in FIG. 1, an inlet opening 30 a and an outlet opening 30 b are provided between the guide plate 25 of the cylindrical body 30 and the cover 26.

  A pair of rolls 40, 40 are provided in front of the inlet opening 30a. At least one of the rolls 40 is driven at a constant speed by a motor (not shown). The pair of rolls 40, 40 hold the sheet 1 from both sides and hold the sheet by friction force, and rotate to supply the sheet 1 between the end surface 24 e of the plate 24 and the facing surface 25 i of the guide plate 25. . The pressing pressure of the sheet by the pair of rolls 40, 40 suppresses the sheet 1 from being pulled into the cylinder 30 at an excessive speed by colliding with the rotating plate 24, and the sheet 1 is moved at a substantially constant speed. It is adjusted as appropriate within a range that can be supplied into the cylinder 30. The supply speed of the sheet 1 can be set to 100 to 200 mm / s, for example. The surface material of the roll may be, for example, a metal material, but is preferably an elastic material such as rubber from the viewpoint of firmly holding the sheet 1. Examples of the elastic material are silicone rubber, butyl rubber, and urethane rubber, and the roll surface may have adhesiveness.

  Further, a receiving portion 25 a for guiding the sheet 1 supplied in a state sandwiched between the pair of rolls 40, 40 between the inlet opening 30 a and the pair of rolls 40, 40 is a guide plate 25. Is provided.

  An outlet pipe L1 is connected to the outlet opening 25b, and a particle filter 82 that collects particles in the gas and a blower 84 that sucks gas from inside the cylinder 30 are connected to the outlet pipe L1. Further, the outlet pipe L1 is provided with a fiber opening L1a, and the fiber F obtained by processing the sheet 1 is drawn out of the outlet pipe L1 through the fiber opening L1a. In front of the fiber opening L1a, a reel 35 for winding the drawn fiber F is provided.

  An elastic material layer 29 is provided on the back surface of the facing surface 25 i of the guide plate 25. Examples of the elastic material are rubber, sponge and the like. The elastic material layer 29 may be provided on the back surface of the facing surface 26 i of the cover 26.

  The cover 26 has an auxiliary opening 25c. The auxiliary opening 25c is provided with an auxiliary line L2 for introducing a stripped composite material (including resin and fibers) as necessary.

  On the upstream side of the pair of rolls 40, a pressing portion 58 that presses the sheet 1 is provided. The pressing unit 58 includes a backup roll 54, a concavo-convex mold 50, and a driving unit 52. The backup roll 54 supports the sheet 1 from the back surface. The backup roll 54 can have an elastic layer 54E on the surface, and in this case, the surface of the backup roll 54 can be elastically deformed. Examples of the elastic body are natural rubber and synthetic rubber.

  The concavo-convex mold 50 is supported so as to be movable back and forth with respect to the backup roll 54. The end surface 50A facing the backup roll 54 of the concavo-convex mold 50 has a number of protrusions. The height of the protrusion can be set to 2 to 4 mm, for example. The pitch of the protrusions can be 1 to 2 mm. Examples of the material of the concavo-convex mold 50 are, for example, cemented carbide and tool steel.

  The drive unit 52 moves the concave / convex mold 50 toward the backup roll 54 and presses the sheet 1 in the thickness direction with the end surface 50 </ b> A of the concave / convex mold 50 to locally deform the sheet 1; 1 and the step of allowing the sheet 1 to travel away from the backup roll 54 are periodically repeated. The pressing cycle can be 10 to 20 cycles per second.

  A guide plate 60 is provided in front of the pressing portion 58 to guide the sheet 1 between the concave-convex mold 50 and the backup roll 54.

  Next, a method for regenerating resin powder and fibers from a sheet containing fibers and resin using such an apparatus will be described.

  First, the sheet 1 is prepared. The sheet 1 is a composite material including resin and fibers. Examples of the resin are a fluorine resin such as polytetrafluoroethylene (PTFE) and a polyvinyl chloride resin.

  The fibers can be woven or non-woven. Examples of the fiber material are polyester fiber such as polyethylene terephthalate, glass fiber, and nylon fiber.

  The cloth may be sandwiched between a pair of resin layers, or the cloth may be impregnated with resin. Examples of sheets having fiber cloth and resin are tent sheets, tarpaulins, and automobile floor mats.

  Further, the fibers may be dispersed in the resin without taking the form of a cloth, or may be implanted in the resin layer. An example of a sheet in which fibers are dispersed in a resin is an automobile floor mat. An example of the sheet in which the resin is flocked is a pile flocked tile carpet.

  The thickness of the sheet 1 is not particularly limited, but can be 3 to 10 mm. A laminated sheet obtained by laminating a plurality of sheets via an adhesive, thermocompression bonding, sewing, or the like can also be used. The thickness of the laminated sheet can be 3 to 10 mm.

  The sheet 1 has a certain length (for example, 5 cm or more, 10 cm or more, so that the tip of the sheet 1 can reach between the facing surface 25i and the end surface 24e in the cylindrical body 30 with the pair of rolls 40 sandwiched therebetween. 30 cm or more).

  Subsequently, the rotating shaft 21 is rotated. Further, the sheet 1 is supplied to the pressing portion 58 along the upper surface of the guide plate 60 and further supplied between the pair of rolls 40 and 40.

  In the pressing unit 58, the plurality of protrusions on the end surface 50 </ b> A of the concavo-convex mold 50 can locally press the sheet 1 in the pressing step. Accordingly, the sheet 1 is suitably deformed, and a large stress acts on the inside of the sheet 1 to promote interlayer separation between the resin and fiber, formation of cracks in the resin, and the like, and separation of the fiber from the resin by the subsequent impact. And pulverization of resin can be promoted. Processing with such a concavo-convex mold is also called smoothing processing or unraveling processing, and has an effect of promoting separation of fibers and resin without cutting the fibers. In particular, the effect is high when the backup roll 54 has the elastic layer 54E and the surface thereof can be elastically deformed, but the present invention can be implemented even when the surface of the backup roll 44 is a metal such as stainless steel.

  The sheet 1 processed by the pressing unit 58 is sent between the pair of rolls 40, 40. The pair of rolls 40, 40 rotates the sheet 1 while holding the sheet 1 from both sides, and receives the sheet 1 by the receiving unit 25a and the entrance opening. It supplies between the opposing surface 25i of the guide plate 25 and the end surface 24e of the plate 24 via 30a. The plate 24 is rotated around the rotation shaft 21 in the same direction as the direction in which the sheet 1 is supplied along the opposing surface 25 i of the guide plate 25. The sheet 1 comes into contact with the protrusions 25p of the opposing surface 25i of the guide plate 25 and is hit by the tip of the plate 24. Thereby, the resin is separated from the fibers on both surfaces of the sheet 1. The obtained resin powder is collected by the particle filter 82 by the gas flow formed by the blower 84. Further, the fiber (for example, cloth) is discharged from the fiber opening L1a and wound around the reel 35.

  Since the recovered resin powder contains almost no fiber, it can be recycled as a resin raw material. Further, since the recovered fiber contains almost no resin, it can be recycled as a raw material for various fabrics.

  According to this embodiment, since the opposing surface 25i of the guide plate 25 includes a large number of protrusions 25p, the sheet 1 can be hit from both sides, and the resin can be efficiently separated (stripped) from the fibers. Is possible. Further, since the sheet 1 is sandwiched between the pair of rolls 40 and supplied to the opposing surface 25i of the guide plate 25, a long sheet can be efficiently processed as it is, and it is not necessary to cut the sheet into strips in advance. Therefore, unnecessary cutting of the fibers is suppressed, and long fibers can be collected. Moreover, when a fiber is a nonwoven fabric or a woven fabric, a fiber can be collect | recovered with the state.

  Further, the plurality of plates 24 are fixed to the rotation shaft 21 such that the main surface 24m of each plate intersects the rotation direction of the plates, and the end surface 24e of each plate 24 faces the facing surface 25i of the guide plate 25. Therefore, it is possible to efficiently hit the wide sheet 1 at the portion including the end face 24e of the plate, and it is also easy to move the resin powder downstream using the main surface 24m of the plate.

  Furthermore, by providing the pressing portion 58, for example, processing is possible even when the sheet is thick, such as when the thickness of the sheet exceeds 1 cm.

  Furthermore, since the elastic material layer 29 is provided on the outer surface of the guide plate 25, noise and vibration during processing are suppressed.

  In addition, when resin is not fully isolate | separated from the fiber, the fiber after a process can be again supplied to an apparatus, and can be processed. For example, when an unprocessed part is formed at the last part in the sheet supply direction, the sheet can be supplied again so that the unprocessed part becomes the foremost part. Further, when there is a small piece of composite material, it can be put through the auxiliary opening 25c. In this case, it is preferable to close the inlet opening 30a. Further, the protrusion 25p on the facing surface 26i of the cover 26 contributes to separation of the resin and fiber of the composite material.

  In addition, even if the fiber is a short fiber that is not a cloth, the resin can be peeled off from the fiber, but since a mixture of the short fiber and resin powder is obtained, the mixture is further subjected to air classification, etc. And can be divided into

  The present invention is not limited to the above embodiment, and various modifications can be made. For example, in the above embodiment, as shown in FIG. 4A, the plate 24 has one end surface 24 e facing the facing surface 25 i of the guide plate 25 when viewed from the axial direction of the rotating shaft 21. A portion of one end surface 24e on the front side in the rotational direction and the other surface of the plate 24 constitute one corner c, but the present invention is not limited to this, and the end surface 24e is separated into a plurality of portions, and each end surface is in the rotational radius direction. Or a gap may be provided between the end faces.

  Specifically, as shown in FIG. 4B, the end surface 24e has two end surface elements 24e1 and 24e2, and a gap such as a recess (for example, a U-shaped groove or a V-shaped groove) is provided between these end surface elements. G can be present. In this case, the end surface elements 24e1 and 24e2 can have corners c1 and c2, respectively. Further, as shown in FIG. 4C, the end face element 24e1 and the end face element 24e2 may not be parallel to the tangential direction of the rotational radius of the plate 24, but may be inclined. Further, in FIG. 4D, the plate 24 includes a plate element 24a and a plate element 24b, and the end surface element 24e1 of the plate element 24a and the end surface element 24e2 of the plate element 24b are displaced from each other in the rotational radial direction ( The diameter of the end surface element 24e2 on the rear side in the rotation direction can be larger than the diameter of the front end surface element 24e1, and in this case, two corners c1 and c2 are formed. Of course, instead of two plate elements, the end of one plate element may have two end surface elements with a step. In this case, since the plate has two corners, the separation efficiency is increased.

  Further, the shape of the pedestal 22 is not limited to a plurality of disks, and may be, for example, a cylinder, or the pedestal 22 may be directly fixed to the rotation shaft. Also, the arrangement direction of the plate 24 is not particularly limited, and the main surface 24m faces the direction of rotation A, and the end surface 24e is arranged parallel to the rotation shaft 21, but the main surface 24m faces the direction parallel to the rotation axis. The end surface 24e may be disposed along the rotation direction.

  Further, a striking member other than the plate 24 may be fixed to the rotating shaft 21. For example, another example of the striking member is a large number of bars extending in the radial direction of rotation from the rotation axis. The plate 24 may have a hole penetrating in the thickness direction at a place other than the end.

  Further, the shape of the protrusion 25 p formed on the facing surface 25 i of the cylindrical body 30 may not be a streak-like protrusion extending in parallel with the rotation shaft 21. For example, it may be a pyramid or a conical protrusion, and as shown in FIG. 5, it has an opening penetrating the front and back of the cylindrical body 30 formed by partially punching the side surface of the cylindrical body 305. The protrusion of the form which the one end protrudes toward the inside may be sufficient.

  Further, in the present embodiment, the protrusion 25p is formed on the opposing surface of the guide plate 25 and the cover 26 over the entire circumference in the cylindrical body 30, but between the inlet opening 30a and the outlet opening 30b, that is, the guide. It suffices to be provided only on the opposing surface 25i of the plate 25.

  Further, the supply unit is not limited to the pair of rolls 40 and 40 as long as it has a pair of sandwiching members that sandwich the sheet 1 from both sides in the thickness direction and at least one of the sandwiching members rotates to supply the sheet 1. For example, as shown in FIG. 6, a combination of endless belt 130 and roll 40 may be used, or a combination of endless belts 130 may be used. Further, a plate in which one of the pinching members does not move, and the other pinching member may be a roll or an endless belt. Further, both of the pinching members may rotate, or only one of them may rotate.

  Needless to say, the pressing portion 58 is not essential.

  Further, the positions of the inlet opening 30a and the outlet opening 30b are not particularly limited, and the fiber opening L1a can be directly provided in the cylindrical body 30.

  Further, the cylindrical body 30 does not need to have a cylindrical shape, and the shape of the cover 26 is arbitrary. The present invention can be carried out without the protrusion 25p on the facing surface 26i of the cover, and can also be carried out in an embodiment without the cover 26.

  DESCRIPTION OF SYMBOLS 21 ... Rotating shaft, 24 ... Plate (striking member), 24e ... End face, 25 ... Guide plate, 25p ... Projection, 26 ... Cover, 30 ... Cylindrical body, 40 ... Roll (supply part), 58 ... Pressing part, 29 ... Elastic material layer, 100... Composite sheet processing apparatus.

Claims (12)

Axis of rotation,
A plurality of striking members respectively fixed to the rotating shaft;
A guide plate having a curved facing surface facing a radially outer end surface of rotation of the plurality of striking members rotated about the rotation axis; and
A supply section for supplying a sheet containing resin and fibers between the opposing surface of the guide plate and the plurality of striking members to be rotated;
The supply unit includes a pair of sandwich members that sandwich the sheet from both sides in the thickness direction, and at least one of the sandwich members rotates to supply the sheet,
A composite sheet processing apparatus having a plurality of protrusions on the opposing surface of the guide plate. Each of the plurality of striking members is a plate,
2. The composite sheet processing apparatus according to claim 1, wherein a main surface of each of the plates faces a rotation direction of the striking member, and an end surface of each of the plates faces a facing surface of the guide plate.   When viewed from the direction of the rotation axis, the plate has a plurality of end faces facing the guide plate, and the end faces are offset from each other in the rotational radius direction, or there is a gap between the end faces. The composite sheet processing apparatus according to claim 2.   The composite sheet processing apparatus according to claim 1, wherein the at least one sandwiching member is a roll or an endless belt.   Any one of Claims 1-4 further provided with the press part which presses the said sheet | seat with the member which has a processus | protrusion before supplying between the opposing surface of the said guide plate, and the said some impact member rotated. The composite sheet processing apparatus according to Item.   The composite sheet processing apparatus of any one of Claims 1-5 by which the elastic material layer is provided in the back surface of the opposing surface of the said guide plate. A method of reproducing resin powder and fibers from a sheet containing fibers and resin,
Rotating a rotating shaft to which a plurality of striking members are fixed;
Holding a guide plate having a curved facing surface so as to face a radially outer end surface of rotation of the plurality of striking members on which the facing surface is rotated;
Supplying a sheet containing fibers and resin between the plurality of striking members to be rotated and the facing surface of the guide plate,
In the supplying step, in a state where the sheet is sandwiched between a pair of sandwiching members from both sides in the thickness direction, the sheet is fed by rotating at least one of the sandwiching members,
A method having a plurality of protrusions on the facing surface of the guide plate. Each of the striking members is a plate,
The method according to claim 7, wherein a main surface of each plate is directed in a rotation direction of the striking member, and an end surface of each plate is opposed to the facing surface of the guide plate.   When viewed from the direction of the rotation axis, the plate has a plurality of end faces facing the guide plate, and the end faces are offset from each other in the rotational radius direction, or there is a gap between the end faces. The method according to claim 8.   The method according to claim 7, wherein the at least one pinching member is a roll or an endless belt.   The method according to claim 7, wherein an elastic material layer is provided on a back surface of the opposing surface of the guide plate.   12. The method according to claim 7, further comprising a pressing step of pressing the sheet with a member having a protrusion before being supplied between the opposing surface of the guide plate and the plurality of striking members to be rotated. The method described in 1.

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