WO2022168344A1 - Plaque à motifs - Google Patents

Plaque à motifs Download PDF

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Publication number
WO2022168344A1
WO2022168344A1 PCT/JP2021/024714 JP2021024714W WO2022168344A1 WO 2022168344 A1 WO2022168344 A1 WO 2022168344A1 JP 2021024714 W JP2021024714 W JP 2021024714W WO 2022168344 A1 WO2022168344 A1 WO 2022168344A1
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WO
WIPO (PCT)
Prior art keywords
plate
holes
surface plate
ribs
reinforcing
Prior art date
Application number
PCT/JP2021/024714
Other languages
English (en)
Japanese (ja)
Inventor
太一 川中
篤 庫内
隆宏 奥島
淳一 宮崎
健一郎 前川
Original Assignee
ニチダイフィルタ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ニチダイフィルタ株式会社 filed Critical ニチダイフィルタ株式会社
Publication of WO2022168344A1 publication Critical patent/WO2022168344A1/fr

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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

Definitions

  • the present invention relates to a pattern plate used in an absorbent body manufacturing apparatus for absorbent articles such as disposable diapers.
  • Disposable diapers and sanitary napkins are used as examples of absorbent articles that absorb excretions such as urine and menstrual blood. These absorbent articles are formed by molding a liquid absorbent material such as pulp fiber or granular superabsorbent polymer (hereinafter also referred to as SAP) into a single sheet as a member for absorbing excrement. have a body
  • the above absorber is produced by a manufacturing apparatus as disclosed in Patent Document 1 (Japanese Patent Application Laid-Open No. 2014-100440), for example.
  • Patent Document 1 Japanese Patent Application Laid-Open No. 2014-100440
  • a schematic configuration of the manufacturing apparatus will be described with reference to FIG. 5 of the present application.
  • the manufacturing device 11 has a rotating drum 12 .
  • a plurality of pattern plates 21, which will be described later, are arranged side by side in the circumferential direction D so that the absorber P is formed on the outer peripheral surface 12D of the rotating drum 12. As shown in FIG.
  • the rotation of the rotating drum 12 is not followed, but is fixed. Further, an intake/exhaust mechanism (not shown) is provided for performing intake in the negative pressure section 12a and exhaust in the positive pressure section 12b.
  • a spreading duct 13 is provided facing the negative pressure section 12a inside the rotating drum 12. As shown in FIG.
  • the spraying duct 13 sprays the liquefied absorbent material Z, which is a mixture of pulp fibers and SAP, toward the outer peripheral surface 12D of the rotating drum 12 located in the negative pressure section 12a.
  • the pattern plate 21 is formed by the intake air generated in the negative pressure section 12a and the spray from the spray duct 13.
  • the absorber material Z is sucked and accumulated in holes 21a, which will be described later, and formed into a single sheet.
  • the rotary drum 12 is exhausted, and the shaped absorbent material Z is taken out from the outer peripheral surface 12D and formed into a single sheet.
  • the absorbent body P is further conveyed to the downstream process.
  • FIG. 6 and 7 show the relationship between the rotating drum 12 and the pattern plate 21 provided on the peripheral surface of the rotating drum 12.
  • FIG. 6 is a schematic perspective view of the rotary drum 12 with a part of the pattern plate 21 removed
  • FIG. 7 is an exploded perspective view showing the structure of the pattern plate 21. As shown in FIG.
  • the pattern plate 21 has an arc shape corresponding to the curvature of the outer peripheral surface 12D of the rotary drum 12 in terms of the number of divisions thereof.
  • a reinforcement plate 21B in which rod portions B1 and B2 are fixed in contact with the inner peripheral surface of the surface layer plate 21A in order to reinforce the inner peripheral surface of the rotating drum 12 and are assembled in a framed lattice shape, and the surface layer plate 21A. and a guide plate 21C that partially covers and exposes the holes 21a of the surface layer plate 21A within the intended shape range of the absorber P in plan view.
  • the rods B1 and B2 in the positive pressure section 12b inhibit the exhaust from the hole 21a in the outer peripheral direction, and the absorbent material Z dispersed in the negative pressure section 12a is removed. Clogging occurs because the particles do not come off in the outer peripheral direction.
  • the distribution of the absorbent material Z may be biased from there and the clogged portion may expand or become partially non-uniform. As a result, it is necessary to completely remove the clogged absorbent material Z after the rotary drum 12 rotates several times, which is troublesome and inefficient in production.
  • the reinforcing plate 21B is provided so that the surface layer plate 21A is not dented or dented by the negative pressure in the negative pressure section 12a and the spray pressure of the absorbent material Z from the spreading duct 13. If the portions B1 and B2 block the hole 21a of the surface plate 21A, it is conceivable to increase the thickness of the surface plate 21A so that the reinforcing plate 21B is not necessary.
  • the surface plate 21A may be a thin plate having a plurality of holes 21a formed by etching, or a wire mesh having a fine mesh and a small thickness, but the thin plate will be described here.
  • the reinforcing plate 21B may be composed of the rods B1 and B2 as described above, or may be a coarse wire mesh, a plate with honeycomb or hexagonal holes formed by etching, a punching plate, or an expanded metal plate. .
  • the thickness of the surface plate 21A it is possible to increase the thickness by stacking a plurality of surface plates 21A having a plurality of holes 21a formed in advance. For example, in order to form a hole or a predetermined shape, a plate having a thickness larger than the hole diameter cannot be processed due to the following restrictions.
  • the compressive stress generated in the punch increases when punching out a plate, and the punch may be damaged, or plastic deformation (for example, warping) of the material may occur, resulting in poor processing accuracy. do.
  • the portion of the hole shape larger than the predetermined shape becomes conspicuous.
  • the thickness of the reinforcing plate 21B is increased, but in this case, as described above, the structures such as the rod portions B1 and B2 of the reinforcing plate 21B block some of the holes 21a of the surface plate 21A. It will be put away.
  • the conventional pattern plate has no other effective and concrete means than providing a reinforcing plate. , the holes in the surface plate were blocked, causing clogging of the holes.
  • JP 2014-100440 A Japanese Patent No. 5913757
  • the conventional pattern plate has a reinforcing plate provided to prevent the surface layer from being dented or depressed by suction.
  • the problem is that removing the clogged absorbent material is very difficult.
  • the present invention provides a surface plate having a plurality of holes formed in a region corresponding to the shape of an absorbent article, and a surface plate provided in a laminated form on the back surface of the surface plate. and a reinforcing plate formed with ribs connecting portions of the unit hole group where no holes are open in the unit hole group.
  • the ribs in the reinforcing plate connect some holes in the surface plate as a unit hole group and connect the unopened portions of the unit hole group, the ribs block up only one hole in the surface plate. There is no Therefore, the ribs can prevent the pattern plate from being dented or dented due to suction, and the ribs can prevent clogging of the absorbent material, thereby significantly reducing the time and effort required for cleaning. It is possible to dramatically suppress the possibility that the distribution of the absorbent material becomes uneven and non-uniform.
  • FIG. 4 is a diagram showing the relationship between the holes of the surface layer plate and the ribs of the reinforcing plate in the pattern plate of the present invention; It is a figure which shows the relationship between the rotating drum of a manufacturing apparatus, and the pattern plate of this invention. It is a figure which shows schematic structure of the pattern plate of this invention. It is a figure which shows schematic structure of a manufacturing apparatus. It is a figure which shows the relationship between the rotating drum of a manufacturing apparatus, and the conventional pattern plate. 1 is a diagram showing a schematic configuration of a conventional pattern plate; FIG.
  • the present invention provides a surface layer plate on which an absorbent material is deposited that maintains a certain rigidity so as not to be dented or dented by suction.
  • a surface plate having a plurality of holes formed in an area corresponding to the shape of the absorbent article and a layered structure provided on the back surface of the surface plate. and a reinforcing plate formed with ribs connecting some holes of the surface plate as unit hole groups and connecting portions of the unit hole groups where no holes are open.
  • the surface plate is thin, and the material used is, for example, stainless steel, which has excellent corrosion resistance and moderate rigidity. Positioning holes are formed in the four corners of this surface plate so that it can be positioned with the reinforcing plate with high accuracy. Since the surface plate is thin, the holes can be formed by etching with a hole diameter and pitch according to the order.
  • the reinforcing plate stainless steel is used for the same reason as the surface plate, but the plate thickness does not have to be as thin as the surface plate, and it is desirable that the thickness is the maximum that the ribs can be etched.
  • the ribs are obtained by etching several holes of the surface plate as a unit hole group so as to form a hole having a plan view shape connecting the unopened portions of the unit hole group.
  • This reinforcing plate also has positioning holes at the four corners like the surface plate, and the holes of the surface plate and the ribs of the reinforcing plate are positioned with high accuracy so that the ribs do not block the holes.
  • the surface plate and the reinforcing plate are integrated by, for example, diffusion bonding after being laminated by aligning the above positioning holes, for example.
  • diffusion bonding By performing diffusion bonding, the two can be integrated without closing the holes in the surface plate, and the rigidity of the two when integrated can be increased.
  • the present invention is based on the idea that the dimension of the hole (opening) formed by the rib and penetrating through the front and back of the reinforcing plate may be larger than the diameter of the hole in the surface plate as long as the hole in the surface plate is not blocked by the rib. rice field.
  • the ribs in the reinforcing plate have a shape in which some holes in the surface plate are used as a unit hole group and the unopened portions of the unit hole group are connected. 10 unit holes are used as a unit hole group, and ribs are formed by connecting portions where holes are not open on the outer edge of the unit hole group.
  • the area surrounded by these ribs has a substantially hexagonal shape, and as described above, the ribs form substantially hexagonal holes (openings) that penetrate the front and back of the reinforcing plate that are larger than the hole diameter of the surface plate without blocking the holes in the surface plate.
  • the reinforcing plate having the ribs improves the rigidity of the surface plate.
  • the present invention may have a configuration in which a plurality of reinforcing plates are laminated and integrated. As described above, the thickness of the reinforcing plate cannot be increased so much due to the limitation of the etching process.
  • the plurality of reinforcing plates may all have the same rib (opening) shape, for example, or each one, some, or all of them may have a different rib (opening) shape. good too.
  • the ribs are configured so as not to block the openings formed by adjacent ribs.
  • the rigidity of the entire pattern plate improve, but the depth of the holes in the surface plate does not increase, so even if the thickness is increased, the occurrence of clogging can be suppressed to the same extent as above. Further, by laminating the reinforcing plate toward the rear surface side of the surface layer plate so that the opening dimension of the rib becomes large, the pattern plate can be easily washed even if the thickness is increased.
  • FIG. 1 An embodiment of the present invention will be described with reference to FIGS. 1 to 4.
  • FIG. Note that the absorbent article manufacturing apparatus is not the point of the present invention and has been described in the prior art section, so it will be omitted here, but the same reference is made to the members that overlap in FIG. 6 with respect to the rotating drum shown in FIG. A code is attached.
  • the pattern plate 1 of the present invention is provided on the peripheral surface of the rotating drum 12 shown in FIG. 3 (the rotating drum overlaps with FIG. 5) in the manufacturing apparatus for manufacturing absorbent articles shown in FIG. As shown in FIG. 3, the pattern plate 1 covers the outer peripheral surface 12D of the rotary drum 12 with a plurality of plates, one of which has an arc shape corresponding to the number of divisions of the rotary drum 12. As shown in FIG. 3,
  • the pattern plate 1 includes a surface plate 2 in which a plurality of holes 2a are formed, a reinforcing plate 3 laminated on the back surface of the surface plate 2, and an intended absorber covering the surface plate 2 partially. and a guide plate 4 for exposing the hole 2a of the surface plate 2 in the shape range of P in plan view.
  • the surface layer plate 2 and the reinforcing plate 3 in the pattern plate 1 of the present invention shown in FIGS. 1 and 2 are configured as follows in this example.
  • the surface plate 2 has a thickness of 0.3 mm, a circumferential dimension (hereinafter referred to as length) of 570.0 mm, and a dimension perpendicular to the circumferential direction (hereinafter referred to as width) of 470.0 mm.
  • a circular hole 2a with a diameter of 0.45 mm was formed in a stainless steel plate in a range of 541.0 mm long by 377.0 mm wide by etching so that the opening ratio in the range was 43%.
  • the reinforcing plate 3 is a stainless steel plate having the same size as the surface layer plate 2 and having positioning holes formed at the four corners at the same positions as the surface layer plate 2A. , several holes 2a, in this example, as shown in FIG. It is obtained by performing an etching process so as to form a rib 3A that connects the connecting portions 2b that are not connected to each other.
  • the surface layer plate 2 and the ten reinforcing plates 3 having the above configuration are placed in this order from the outer peripheral side of the rotary drum 12 using the mutual positioning holes, and the ribs 3A of the upper and lower layers in the ten reinforcing plates 3 They are laminated while precisely aligned so that they are not displaced from each other and that the ribs 3A of the reinforcing plate 3 do not block the holes 2a of the surface plate 2, and the whole is integrated by diffusion bonding.
  • a pattern plate 1 is obtained by attaching a guide plate 4 .
  • the pattern plate 1 of the present invention can reinforce the rigidity of the surface plate 2 without the reinforcing plate 3 itself and the ribs 3A blocking the holes 2a of the surface plate 2.
  • the absorbent material is prevented from being dented or dented by suction, and clogging of the absorbent material does not occur. You can dramatically reduce the chances of it becoming a thing.

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  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Absorbent Articles And Supports Therefor (AREA)

Abstract

[Problème] La présente invention aborde le problème selon lequel, dans les plaques à motifs de l'état de la technique, des bouchons de matériau absorbant, qui sont développés dans des trous dans une plaque de surface en raison de la configuration d'une plaque de renfort disposée de façon à empêcher la plaque de surface d'être cabossée ou enfoncée par aspiration, sont très difficiles à éliminer. [Solution] La plaque à motifs (1) selon la présente invention présente : une plaque de surface (2) dans laquelle sont formés une pluralité de trous (2a) dans une région correspondant à la forme d'un article absorbant ; une plaque de renfort (3) qui est disposée de manière stratifiée sur la surface envers de la plaque de surface (2) et dont l'intérieur présente des nervures (3A), les nervures (3A) reliant des sections où aucun trou (2a) n'est ouvert dans un groupe de trous unitaires (2A) (sections de liaison 2b), le groupe de trous unitaires (2A) étant un ensemble de plusieurs trous (2a) dans la plaque de surface (2). [Effet] Étant donné que les trous (2a) ne sont pas bloqués par les nervures (3A) dans l'ensemble, le développement de bouchons du matériau absorbant est supprimé, ce qui permet de réduire considérablement le travail de nettoyage et de supprimer la possibilité que la distribution du matériau absorbant soit faussée et irrégulière.
PCT/JP2021/024714 2021-02-03 2021-06-30 Plaque à motifs WO2022168344A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021015448A JP2022118762A (ja) 2021-02-03 2021-02-03 パターンプレート
JP2021-015448 2021-02-03

Publications (1)

Publication Number Publication Date
WO2022168344A1 true WO2022168344A1 (fr) 2022-08-11

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ID=82741044

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PCT/JP2021/024714 WO2022168344A1 (fr) 2021-02-03 2021-06-30 Plaque à motifs

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JP (1) JP2022118762A (fr)
WO (1) WO2022168344A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006122109A (ja) * 2004-10-26 2006-05-18 Daio Paper Corp 吸収性物品の製造装置、吸収性物品の製造方法およびこれを用いて製造した吸収性物品
KR20100055135A (ko) * 2008-11-17 2010-05-26 주식회사 씨엠아이 성형 스크린 및 성형 스크린의 형성 방법, 스크린 인서트, 및 성형 드럼 장치
JP2010178919A (ja) * 2009-02-05 2010-08-19 Uni Charm Corp 吸収体の製造装置、及び通気性部材の製造方法
JP2011147872A (ja) * 2010-01-21 2011-08-04 Kansai Kanaami Kk 積層焼結フィルター
JP2012050568A (ja) * 2010-08-31 2012-03-15 Unicharm Corp 吸収体の製造装置、及び通気性部材の製造方法
JP2017533754A (ja) * 2014-11-05 2017-11-16 ジーディーエム エス．ピー．エー．Ｇｄｍ Ｓ．Ｐ．Ａ． 成形くぼみ、及び成形くぼみを作製するための方法
WO2018042544A1 (fr) * 2016-08-31 2018-03-08 ユニ・チャーム株式会社 Dispositif de fabrication d'un corps absorbant et procédé de fabrication d'un corps absorbant

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006122109A (ja) * 2004-10-26 2006-05-18 Daio Paper Corp 吸収性物品の製造装置、吸収性物品の製造方法およびこれを用いて製造した吸収性物品
KR20100055135A (ko) * 2008-11-17 2010-05-26 주식회사 씨엠아이 성형 스크린 및 성형 스크린의 형성 방법, 스크린 인서트, 및 성형 드럼 장치
JP2010178919A (ja) * 2009-02-05 2010-08-19 Uni Charm Corp 吸収体の製造装置、及び通気性部材の製造方法
JP2011147872A (ja) * 2010-01-21 2011-08-04 Kansai Kanaami Kk 積層焼結フィルター
JP2012050568A (ja) * 2010-08-31 2012-03-15 Unicharm Corp 吸収体の製造装置、及び通気性部材の製造方法
JP2017533754A (ja) * 2014-11-05 2017-11-16 ジーディーエム エス．ピー．エー．Ｇｄｍ Ｓ．Ｐ．Ａ． 成形くぼみ、及び成形くぼみを作製するための方法
WO2018042544A1 (fr) * 2016-08-31 2018-03-08 ユニ・チャーム株式会社 Dispositif de fabrication d'un corps absorbant et procédé de fabrication d'un corps absorbant

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