WO2023223939A1 - 積繊ドラムに利用されるスクリーン形成体の製造方法及びスクリーン形成体を利用した積繊ドラム - Google Patents

積繊ドラムに利用されるスクリーン形成体の製造方法及びスクリーン形成体を利用した積繊ドラム Download PDF

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Publication number
WO2023223939A1
WO2023223939A1 PCT/JP2023/017761 JP2023017761W WO2023223939A1 WO 2023223939 A1 WO2023223939 A1 WO 2023223939A1 JP 2023017761 W JP2023017761 W JP 2023017761W WO 2023223939 A1 WO2023223939 A1 WO 2023223939A1
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Prior art keywords
screen
reinforcing member
forming body
flat
manufacturing
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Ceased
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PCT/JP2023/017761
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English (en)
French (fr)
Japanese (ja)
Inventor
崇博 島田
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Zuiko Corp
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Zuiko Corp
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Publication date
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Priority to JP2024521714A priority Critical patent/JPWO2023223939A1/ja
Priority to CN202380040363.5A priority patent/CN119212657A/zh
Priority to EP23807543.6A priority patent/EP4520305A4/en
Publication of WO2023223939A1 publication Critical patent/WO2023223939A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15577—Apparatus or processes for manufacturing

Definitions

  • the present invention relates to a screen forming body, and more specifically to a screen forming body used in a stacking drum used for manufacturing an absorbent body.
  • the present invention also relates to a fiber stacking drum using this screen forming body.
  • an absorbent manufacturing apparatus using a stacking drum is known.
  • the fiber stacking drum is a rotating drum that is provided with a plurality of molds for molding absorbers on its outer peripheral surface.
  • the absorbent material is manufactured by laminating the absorbent material, which is the raw material for the absorbent material, on a mold of a fiber stacking drum, and then releasing the laminated absorbent material from the mold. .
  • the mold used for the fiber stacking drum includes an air permeable member (screen) placed in the opening on the outer peripheral surface of the fiber stacking drum.
  • This breathable member is subjected to external forces in opposite directions when the absorbent material is laminated and when the absorbent material is released from the mold, so if the breathable member is used alone, it will deform and cause fatigue. There is a risk of destruction.
  • Patent Document 1 Japanese Patent No. 5210914
  • a mesh formed by connecting a plurality of first wires and a plurality of second wires that intersect with each other at their intersection points is disclosed. It is described that the body is used as a reinforcing member, and in particular, the intersection of the first wire and the second wire, which have high rigidity among the mesh members, is joined to the breathable member to suppress deformation of the breathable member. has been done.
  • Patent Document 1 Japanese Patent No. 5210914
  • a mesh body of the first wire and the second wire is used as a reinforcing member, and the intersection portion of the first wire and the second wire is used as a breathable member.
  • the reinforcing member and the breathable member are joined to each other intermittently, there is a possibility that the reinforcing member and the breathable member cannot be firmly joined.
  • the breathable member and the reinforcing member are formed into an arc shape after joining the breathable member and the reinforcing member so that the shape corresponds to the shape of the outer peripheral surface of the fiber stacking drum. If the reinforcing member and the breathable member are not firmly joined for some reason, there is a risk that problems such as the breathable member and the reinforcing member coming undone during bending may occur.
  • the method for manufacturing a screen forming body of the present invention is a method for manufacturing a screen forming body used in a fiber stacking drum.
  • a method for manufacturing a screen forming body includes a step of preparing a flat screen having a large number of first holes formed therein, a step of preparing a flat plate-like reinforcing member having a large number of second holes formed therein, and a step of preparing a flat screen having a plurality of first holes formed therein.
  • the method includes a step of surface-joining and integrating a shaped screen and a flat reinforcing member, and a step of bending and forming the integrated screen and reinforcing member into an arc shape.
  • the fiber stacking drum of the present invention includes a screen forming body.
  • the screen forming body includes a plate-shaped screen in which a large number of first holes are formed, and a plate-shaped reinforcing member in which a large number of second holes are formed and is integrated with the screen by surface bonding. include.
  • the screen and the reinforcing member are more firmly joined than when joining the reinforcing member to the screen at points. can. Therefore, in the bending process after the screen and the reinforcing member are integrated, it is possible to suppress the occurrence of problems such as the screen and the reinforcing member becoming disconnected.
  • the stacking drum of the present invention uses a screen forming body in which the screen and the reinforcing member are joined face-to-face, the screen can be firmly supported by the reinforcing member, and the life of the screen can be extended. Can be done.
  • FIG. 1 is a schematic exploded perspective view of a fiber stacking drum according to an embodiment of the present invention.
  • FIG. 3 is an exploded perspective view of the forming die of the fiber stacking drum of FIG. 2;
  • FIG. 4 is a schematic view of a flat screen with first holes formed in the screen forming body of the mold shown in FIG. 3 before face-to-face contact with a reinforcing member.
  • FIG. 4 is a schematic diagram of a flat reinforcing member in which second holes have been formed in the screen forming body of the mold shown in FIG. 3 before surface contact with the screen. 4 is a manufacturing flow diagram showing the manufacturing process of the screen forming body of the mold shown in FIG. 3.
  • FIG. 3 is an exploded perspective view of the forming die of the fiber stacking drum of FIG. 2;
  • FIG. 4 is a schematic view of a flat screen with first holes formed in the screen forming body of the mold shown in FIG. 3 before face-to-face contact with a reinforcing member.
  • FIG. 1 is a schematic diagram of an apparatus 10 for producing an absorbent body A including a stacking drum 100 according to an embodiment of the present invention.
  • FIG. 2 is a schematic exploded perspective view of the stacking drum 100.
  • FIG. 3 is an exploded perspective view of the mold 110 of the fiber stacking drum 100.
  • the absorbent body A is an article used, for example, in disposable diapers, sanitary napkins, etc., and absorbs body fluids such as urine and menstrual blood.
  • the absorbent body A is an article formed by molding an absorbent material such as pulp fiber into a predetermined shape, although the material is not limited thereto.
  • the manufacturing apparatus 10 for absorbent body A mainly includes a stacking drum 100, a duct 20, and a suction conveyor 30 (see FIG. 1).
  • the stacking drum 100 is a cylindrical rotating drum with a hollow interior.
  • the outer peripheral portion of the fiber stacking drum 100 rotates in the direction of an arrow R around a rotation axis O extending along the center of the cylindrical fiber stacking drum 100 (see FIG. 1).
  • the stacking drum 100 mainly includes a frame 130, a plurality of molds 110, and partition walls 22 (see FIGS. 1 and 2).
  • the frame 130 includes a pair of annular frames 132 and a plurality of axial frames 134.
  • the annular frame 132 is an annular frame centered on the rotation axis O of the fiber stacking drum 100.
  • the pair of annular frames 132 are arranged apart from each other in the axial direction of the rotation axis O of the fiber stacking drum 100.
  • Each axial frame 134 extends along the axial direction of the rotation axis O of the fiber stacking drum 100 and connects the pair of annular frames 132.
  • An opening Op surrounded by an annular frame 132 and an axial frame 134 is formed in the frame 130 .
  • a plurality of molds 110 are attached to the outer peripheral surface of the frame 130 along the circumferential direction so as to close the opening Op (see FIG. 2).
  • the mold 110 is attached to the outer peripheral surface of the frame 130 by, for example, welding, but the method of attaching the mold 110 to the frame 130 is not limited to welding.
  • Each mold 110 is formed in an arc shape as shown in FIG. 2 when viewed along the rotation axis O of the fiber stacking drum 100.
  • each mold 110 mainly includes a mold body 114 on a thick plate and a screen forming body 200.
  • a mold body 114 is arranged outside the screen forming body 200 in the radial direction of the fiber stacking drum 100.
  • a through hole 114a is formed in the center of the mold body 114, passing through the mold body 114 in the thickness direction (in the radial direction of the fiber stacking drum 100).
  • each mold 110 is formed with a recess 112 that is recessed inward in the radial direction of the fiber stacking drum 100 and has the screen forming body 200 as the bottom (FIG. 2 reference).
  • each mold 110 is formed with a single recess 112, but the present invention is not limited to this.
  • each mold 110 may have a plurality of recesses 112 formed therein.
  • the shape of the through hole 114a may not be a rectangular shape as depicted in FIG. 2, but may be another shape.
  • the screen forming body 200 includes a plate-shaped screen 210 formed in an arc shape and a plate-shaped reinforcing member 220 formed in an arc shape, which are stacked in the radial direction of the fiber stacking drum 100. , is a structure integrated by surface bonding. In the radial direction of the fiber stacking drum 100, the screen 210 is arranged outside the reinforcing member 220. A large number of first holes 212 are formed in the screen 210 so as to penetrate the plate forming the screen 210 (see FIG. 3). A large number of second holes 222 are formed in the reinforcing member 220 so as to penetrate the plate forming the reinforcing member 220 (see FIG. 3).
  • the screen forming body 200 allows air to pass through it in the thickness direction (in the radial direction of the fiber stacking drum 100). It is possible. Details of the screen forming body 200 and a method for manufacturing the screen forming body 200 will be described later.
  • the screen forming body 200 By disposing the screen forming body 200 at the bottom of the recess 112 of the mold 110, the outside of the fiber stacking drum 100 (the space outside the mold 110) and the inside of the fiber stacking drum 100 (the space inside the mold 110) are separated. ) is communicated with through the screen forming body 200 at the bottom of the recess 112.
  • the suction space Si (see FIG. 1), which is one of the plurality of spaces, is a space from which internal air is sucked out from an opening (not shown), and the pressure is lower than the pressure outside the fiber stacking drum 100 (negative pressure). space).
  • the suction space Si takes in air from a space outside the fiber stacking drum 100 via a screen forming body 200 that is arranged adjacent to the radially outer side of the suction space Si.
  • the blowout space So see FIG.
  • the blowing space So is a space into which air is blown from an opening (not shown), and is a space where the pressure is higher than the pressure outside the fiber stacking drum 100 (positive pressure).
  • the blowing space So blows air out to a space outside the fiber stacking drum 100 via a screen forming body 200 that is arranged adjacent to the radially outer side of the blowing space So.
  • each mold 110 passes outside the suction space Si and then the blowout space So, and when it rotates further, it passes outside the suction space Si again. pass.
  • the duct 20 forms a supply space Sa that surrounds at least a portion of the suction space Si inside the fiber stacking drum 100 on the radially outer side of the fiber stacking drum 100 (see FIG. 1).
  • Air 24 containing an absorbent material is supplied to the supply space Sa from an opening (not shown).
  • the fiber stacking drum 100 rotates around the rotation axis O and a mold 110 moves through the supply space Sa
  • the air 24 containing the absorbent material supplied to the supply space Sa moves through the supply space Sa. It flows into the recess 112 of the mold 110, and then flows through the screen forming body 200 into the suction space Si, which has a lower pressure than the supply space Sa.
  • the screen 210 of the screen forming body 200 is formed with the first holes 212 having a small diameter, the absorbent material contained in the air 24 does not flow into the suction space Si. . Therefore, the absorbent material contained in the air 24 does not pass through the screen 210 and is stacked in the recess 112 of the mold 110.
  • the suction conveyor 30 is arranged adjacent to the blowout space So inside the fiber stacking drum 100 via the mold 110 (see FIG. 1).
  • the suction conveyor 30 is arranged on the downstream side of the duct 20 in the rotation direction of the fiber stacking drum 100 (see arrow R) (see FIG. 1).
  • the suction conveyor 30 is a conveyor that sucks air from a conveyor surface (conveyance surface), as shown by the arrow in FIG.
  • the suction conveyor 30 sucks the absorbent material (absorbent material A) stacked in the recess 112 of the mold 110 when the mold 110 moves through the supply space Sa, and transfers the absorbent material A to the recess 112 of the mold 110.
  • the absorbent body A is released from the mold and transported.
  • the absorbent body A conveyed by the suction conveyor 30 is conveyed to a subsequent process and is used for disposable diapers, sanitary napkins, and the like.
  • the screen forming body 200 is made up of a plate-shaped screen 210 formed in an arc shape and a plate-shaped reinforcing member 220 formed in an arc shape, which are laminated in the radial direction. , is a structure integrated by surface bonding.
  • FIG. 4 is a schematic diagram of the flat screen 210b (before bending) in which the first holes 212 have been formed, before the screen forming body 200 is joined face-to-face with the reinforcing member 220.
  • FIG. 5 is a schematic diagram of the flat reinforcing member 220b (before bending) in which the second holes 222 have been formed, before the surface joining with the screen 210 of the screen forming body 200.
  • FIG. 6 is a manufacturing flow diagram showing the manufacturing process of the screen forming body 200.
  • the method for manufacturing the screen forming body 200 mainly includes a step of preparing a flat screen 210b in which a large number of first holes 212 are formed (step S1), and a step of preparing a flat screen 210b in which a large number of first holes 212 are formed. 222 is formed (step S2); a step of surface-bonding and integrating the flat screen 210b and the flat reinforcing member 220b (step S3); The method includes a step of bending the integrated screen 210b and reinforcing member 220b into an arc shape (step S4). These steps S1 to S4 will be explained below.
  • step S1 and step S2 will be described here in the order of step S1 and step S2, the order of these steps S1 and S2 may be reversed or may be performed simultaneously.
  • Step S1 The process (step S1) of preparing a flat screen 210b in which a large number of first holes 212 are formed will be described.
  • the flat screen 210b in which the first holes 212 are formed is manufactured from the flat plate member 210a in which the first holes 212 are not formed.
  • the flat member 210a is a rectangular member. Although the material is not limited, the flat member 210a is, for example, a member made of SUS.
  • Step S1 includes a step of forming a first hole 212 in the flat member 210a.
  • the first hole 212 is a hole provided to allow air to pass through without allowing the absorbent material to pass through.
  • the first hole 212 is formed sufficiently small so that the absorbent material does not pass therethrough.
  • the first hole 212 is a circular hole with a diameter of 1 mm or less, more preferably about 0.2 to 0.5 mm.
  • the shape of the first hole 212 is not limited to a circular shape, and may have other shapes.
  • the processing method is not limited, in order to form the small-diameter first holes 212 close to each other, the first holes 212 are formed in the flat member 210a by, for example, etching.
  • etching When forming the first hole 212 in the flat member 210a by etching, first, the area corresponding to the area where the first hole 212 is not formed in the flat member 210a is masked with an anticorrosive agent, and then the first hole 212 is formed by etching.
  • the first hole 212 is formed by corroding only the area corresponding to the area with a chemical.
  • the thickness of the flat member 210a is preferably 1 mm or less, more preferably 0.3 mm to 0.6 mm.
  • the screen 210 is used as the screen forming body 200 combined with the reinforcing member 220.
  • Step S2 The process (step S2) of preparing a flat reinforcing member 220b in which a large number of first holes 212 are formed will be described.
  • the flat plate-shaped reinforcing member 220b in which the second hole 222 is formed is manufactured from the flat plate-shaped member 220a in which the second hole 222 is not formed.
  • the flat member 220a is a rectangular member.
  • the flat member 220a is, for example, a member made of SUS. Since the flat member 220a is a member intended to reinforce the screen 210, the thickness of the flat member 220a is approximately several mm (for example, 3 to 5 mm), which is thicker than the flat member 210a.
  • Step S2 includes a step of forming a second hole 222 in the flat member 220a.
  • the second hole 222 is formed larger than the first hole 212 because it is not intended to suppress the passage of the absorbent material.
  • the second hole 222 is a rectangular hole with a length of about 10 to 15 mm and a width of about 5 to 10 mm.
  • the dimension of the second hole 222 in the direction extending in the circumferential direction of the fiber stacking drum 100 when it is finally used in the screen formation body 200 is referred to as the width.
  • the dimension of the second hole 222 in the direction extending in the axial direction of the fiber stacking drum 100 is referred to as length.
  • the width W1 (see FIG. 5) of the second holes 222 is the same in the plurality of second holes 222.
  • the width W1 of the second holes 222 in the flat reinforcing member 220b is made the same, the width dimensions of the many second holes 222 in the reinforcing member 220 after bending will also be substantially the same.
  • the ventilation resistance of the screen forming body 200 tends to be uniform regardless of the location, and an absorbent body with a uniform thickness can be manufactured using the fiber stacking drum 100. It becomes easier.
  • the total area of the second holes 222 in the flat reinforcing member 220b (in other words, the open area ratio in the flat reinforcing member 220b) is the It is desirable that the reinforcing member 220 is as high as possible while still satisfying the purpose of supporting the screen 210.
  • the shape of the second hole 222 is not limited to the above-mentioned rectangular shape, but may be a polygonal shape such as a triangle, pentagon, or hexagon. Moreover, the shape of the second hole 222 may be circular, oval, or the like. Note that even when the shape of the second hole 222 is other than a rectangular shape, the porosity of the flat reinforcing member 220b is set as much as possible within the range where the flat reinforcing member 220b can satisfy the purpose of supporting the screen 210. High is desirable.
  • the distance between adjacent second holes 222 should be set within a range that does not impair the purpose of supporting the screen 210. , is preferably as small as possible.
  • the distance d between adjacent second holes 222 is preferably about 0.3 to 0.7 mm.
  • the porosity of the reinforcing member 220 (the second holes 222 formed in the flat reinforcing member 220b relative to the area of the flat plate member 220a) (total area ratio), and it is possible to suppress the occurrence of a situation where the reinforcing member 220 becomes a large ventilation resistance during fiber stacking in the fiber stacking drum 100.
  • the distance between the second holes 222 formed in the flat reinforcing member 220b is at least 0.3 mm, the screen 210 can be firmly supported by the reinforcing member 220.
  • the processing method is not limited, in order to form such a second hole 222, the second hole 222 is formed in the flat member 220a by, for example, laser processing.
  • the reinforcing member 220 can be formed with high precision.
  • problems occur such as the screen 210 and the reinforcing member 220 not being joined in some parts, and the joint strength of that part being reduced. is likely to be suppressed.
  • the second hole 222 may be formed by a processing method other than laser processing (for example, press processing).
  • press processing there is a risk that burrs may occur at the press location. Therefore, compared to press processing, it is easier to form the reinforcing member 220 with high precision using laser processing.
  • Step S3 When the flat screen 210b is prepared in step S1 and the flat reinforcing member 220b is prepared in step S2, the flat screen 210b and the flat reinforcing member 220b are integrated (step S3).
  • integration may be carried out in such a manner that only a portion of the reinforcing member 220b is joined to the screen 210b, but in such a configuration, the flat screen 210b and the flat reinforcing member 220b cannot be firmly joined. there is a possibility.
  • the flat screen 210b and the flat reinforcing member 220b are integrated by surface bonding.
  • substantially the entire surface of the mesh-shaped reinforcing member 220b facing the screen 210b is joined to the screen 210b.
  • the flat screen 210b and the flat reinforcing member 220b are surface-joined by, for example, diffusion bonding.
  • Diffusion bonding is a method of bonding by bringing base materials into close contact with each other, applying pressure to an extent that minimizes plastic deformation at a temperature below the melting point of the base materials, and utilizing the diffusion of atoms occurring at the bonding surfaces.
  • the surface bonding method may be cold pressure welding, ultrasonic welding, forge welding, or the like.
  • Step S4 When the flat screen 210b and the flat reinforcing member 220b are integrated in step S3, in step S4, the integrated flat screen 210b and flat reinforcing member 220b are Processing is performed to form the drum 100 into an arc shape corresponding to the outer peripheral surface of the drum 100 (the outer peripheral surface of the annular frame 132). Specifically, in step S4, the surface of the reinforcing member 220 that is not in contact with the screen 210 after bending is bent with respect to the integrated flat screen 210b and flat reinforcing member 220b. Bending is performed so that the shape matches the shape of the outer peripheral surface of the annular frame 132 of the fiber stacking drum 100. In this step, for example, as shown in FIG.
  • a flat screen 210b and a flat reinforcing member 220b which are integrated, are sandwiched between a punch and a die to form a flat screen.
  • 210b and the flat reinforcing member 220b are formed into an arc shape.
  • the method for manufacturing the screen forming body 200 of the embodiment described above is a method for manufacturing the screen forming body 200 used in the fiber stacking drum 100.
  • the method for manufacturing the screen forming body 200 includes the steps of preparing a flat screen 210b in which a large number of first holes 212 are formed, and preparing a flat reinforcing member 220b in which a large number of second holes 222 are formed. a step of surface-bonding and integrating the flat screen 210b and the flat reinforcing member 220b; and a step of bending the integrated screen 210b and the reinforcing member 220b into an arc shape. Be prepared.
  • the distance between the screen 210 and the reinforcing member 220 is smaller than when the reinforcing member 220 is joined to the screen 210 at points. can be firmly joined. Therefore, in the bending process after the flat screen 210b and the flat reinforcing member 220b are integrated, it is possible to suppress the occurrence of problems such as the screen 210 and the reinforcing member 220 becoming disconnected.
  • high bonding strength can be obtained at the bonded portion between the screen 210 and the reinforcing member 220 by diffusion bonding.
  • the step of preparing the flat reinforcing member 220b includes forming the second hole 222 by laser processing in the flat member 220a before the second hole 222 is formed. Including process.
  • the reinforcing member 220 can be formed with high precision by using laser processing. As a result, in the face-to-face connection between the flat screen 210b and the flat reinforcing member 220b, the screen 210b and the reinforcing member 220b are not joined in some parts, and problems such as a decrease in the joint strength of that part are prevented. Easy to suppress.
  • the distance between adjacent second holes 222 is 0.3 mm or more and 0.7 mm or less.
  • the distance between the second holes 222 formed in the reinforcing member 220 is as narrow as 0.7 mm or less, it is possible to increase the pore area ratio of the reinforcing member 220, When stacking fibers in the fiber stacking drum 100, it is possible to suppress the occurrence of a situation where the reinforcing member 220 becomes a large ventilation resistance.
  • the distance between the second holes 222 formed in the reinforcing member 220 is ensured to be at least 0.3 mm, so the reinforcing member 220 firmly holds the screen. can be supported.
  • the width dimension of the second holes 222 along the circumferential direction when formed into an arc shape is the same in the large number of second holes 222.
  • the fiber stacking in the fiber stacking drum 100 is In this case, the ventilation resistance of the screen forming body 200 tends to be uniform regardless of the location. Therefore, using the stacking drum 100, it is easy to manufacture an absorbent body having a uniform thickness.
  • the method for manufacturing the screen forming body 200 of the embodiment described above includes a step of forming the first holes 212 by etching in the flat member 210a before the first holes 212 are formed.
  • the stacking drum 100 of the above embodiment includes a screen forming body 200.
  • the screen forming body 200 includes a plate-shaped screen 210 in which a large number of first holes 212 are formed, and a plate-shaped screen 210 in which a large number of second holes 222 are formed, and which are integrated with the screen 210 by surface bonding.
  • a reinforcing member 220 is included.
  • the screen forming body 200 in which the screen 210 and the reinforcing member 220 are surface-bonded is used, so the screen 210 can be firmly supported by the reinforcing member 220. , it is possible to extend the life of the screen.
  • a method for manufacturing a screen forming body according to the first aspect of the present invention is a method for manufacturing a screen forming body used in a fiber stacking drum.
  • a method for manufacturing a screen forming body includes a step of preparing a flat screen having a large number of first holes formed therein, a step of preparing a flat plate-like reinforcing member having a large number of second holes formed therein, and a step of preparing a flat screen having a plurality of first holes formed therein.
  • the method includes a step of surface-joining and integrating a shaped screen and a flat reinforcing member, and a step of bending and forming the integrated screen and reinforcing member into an arc shape.
  • the screen and the reinforcing member are joined face-to-face, the screen and the reinforcing member are more strongly bonded than when the reinforcing member is joined to the screen at points. Can be joined. Therefore, in the bending process after the flat screen and the flat reinforcing member are integrated, it is possible to suppress the occurrence of problems such as the screen and the reinforcing member coming uncoupled.
  • the method for manufacturing a screen forming body according to the second aspect of the present invention is the method for manufacturing the screen forming body according to the first aspect, in which in the step of integrating the flat screen and the flat reinforcing member, The screen and the flat reinforcing member are diffusion bonded.
  • high bonding strength can be obtained at the bonded portion between the screen and the reinforcing member by diffusion bonding.
  • the method for manufacturing a screen formed body according to the third aspect of the present invention is the method for manufacturing the screen formed body according to the first aspect or the second aspect, in which the step of preparing the reinforcing member includes the step of preparing the reinforcing member before forming the second hole.
  • the method includes a step of forming a second hole in the flat member by laser processing.
  • the reinforcing member can be formed with high precision by using laser processing.
  • the face-to-face connection between the flat screen and the flat reinforcing member it is easy to suppress the occurrence of problems such as the screen and the reinforcing member not being joined in some parts and the joining strength in that part being reduced.
  • a method for manufacturing a screen forming body according to a fourth aspect of the present invention is a method for manufacturing a screen forming body according to any one of the first to third aspects, wherein the distance between adjacent second holes is 0.3 mm. It is not less than 0.7 mm.
  • the distance between the second holes formed in the reinforcing member is as narrow as 0.7 mm or less, it is possible to increase the pore area ratio of the reinforcing member, and it is possible to It is possible to suppress the occurrence of a situation where the reinforcing member becomes a large ventilation resistance during fiber stacking.
  • the distance between the second holes formed in the reinforcing member is ensured to be at least 0.3 mm, the screen cannot be firmly supported by the reinforcing member. can.
  • a method for manufacturing a screen forming body according to a fifth aspect of the present invention is a method for manufacturing a screen forming body according to any one of the first to fourth aspects, in which a large number of second holes are formed into an arc shape. The width dimensions of the second holes along the circumferential direction are the same.
  • the screen formation body is The ventilation resistance of the formed body tends to be uniform regardless of location. Therefore, it is easy to manufacture an absorbent body having a uniform thickness using a stacking drum.
  • a method for manufacturing a screen-formed body according to a sixth aspect of the present invention is a method for manufacturing a screen-formed body according to any one of the first to fifth aspects, wherein the flat member before the first hole is formed is etched.
  • the method includes a step of forming a first hole by processing.
  • the fiber stacking drum according to the seventh aspect of the present invention includes a screen forming body.
  • the screen forming body includes a plate-shaped screen in which a large number of first holes are formed, and a plate-shaped reinforcing member in which a large number of second holes are formed and is integrated with the screen by surface bonding. include.
  • the screen forming body in which the screen and the reinforcing member are joined face-to-face is used, the screen can be firmly supported by the reinforcing member, and the life of the screen can be extended. can be achieved.

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PCT/JP2023/017761 2022-05-20 2023-05-11 積繊ドラムに利用されるスクリーン形成体の製造方法及びスクリーン形成体を利用した積繊ドラム Ceased WO2023223939A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2024521714A JPWO2023223939A1 (https=) 2022-05-20 2023-05-11
CN202380040363.5A CN119212657A (zh) 2022-05-20 2023-05-11 用于积纤鼓的筛网形成体的制造方法以及使用了筛网形成体的积纤鼓
EP23807543.6A EP4520305A4 (en) 2022-05-20 2023-05-11 METHOD FOR PRODUCING A SCREEN FORMING BODY FOR A FIBER COLLECTING DRUM AND FIBER COLLECTING DRUM WITH THE SCREEN FORMING BODY

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
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