WO2018016490A1 - 吸収体の製造装置及び吸収体の製造方法 - Google Patents

吸収体の製造装置及び吸収体の製造方法 Download PDF

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Publication number
WO2018016490A1
WO2018016490A1 PCT/JP2017/025978 JP2017025978W WO2018016490A1 WO 2018016490 A1 WO2018016490 A1 WO 2018016490A1 JP 2017025978 W JP2017025978 W JP 2017025978W WO 2018016490 A1 WO2018016490 A1 WO 2018016490A1
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WO
WIPO (PCT)
Prior art keywords
region
scuffing
rotating drum
roll
peripheral surface
Prior art date
Application number
PCT/JP2017/025978
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English (en)
French (fr)
Japanese (ja)
Inventor
知之 茂木
Original Assignee
花王株式会社
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.)
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Publication date
Application filed by 花王株式会社 filed Critical 花王株式会社
Priority to CN201780044132.6A priority Critical patent/CN109475438B/zh
Publication of WO2018016490A1 publication Critical patent/WO2018016490A1/ja

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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
    • 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
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/531—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having a homogeneous composition through the thickness of the pad
    • A61F13/532—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having a homogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad

Definitions

  • the present invention relates to an absorber manufacturing apparatus and an absorber manufacturing method.
  • an absorbent body used for absorbent articles such as disposable diapers, sanitary napkins, incontinence pads, etc.
  • a relatively thick wall part and a relatively high thickness part As an absorbent body used for absorbent articles such as disposable diapers, sanitary napkins, incontinence pads, etc., from the viewpoint of improvement in wearing feeling and prevention of leakage, a relatively thick wall part and a relatively high thickness part.
  • an absorber having a low thin portion is used, and in particular, an absorber having a middle-high portion (thick portion) having an increased thickness in the center portion may be used.
  • Patent Documents 1 to 3 use a fiber stacking device including a rotating drum having a deeper middle-high portion recess in the accumulation recess on the outer peripheral surface. A method is described.
  • Patent Document 1 a fiber material is supplied in a scattered state to the outer peripheral surface of the rotating drum using a duct, and an excess portion overflowing from the concave portion for collecting the rotating drum is scraped off with a scuffing roll disposed on the downstream side.
  • a fiber stacking apparatus is described in which the scraped fiber material is supplied again to the upstream side of the duct via a conveyance path different from the duct. According to the fiber stacking apparatus described in Patent Document 1, an excess portion of the overflowing fiber material can be reused, so that the fiber can be efficiently stacked.
  • Patent Document 2 discloses that in the accumulation concave portion formed on the outer peripheral surface of the pile drum, the pulp is excessively distributed in the circumferential direction in the region including the concave portion for middle and high in the width direction (generally the central region). After supplying and depositing, the excess portion is scraped off with a scuffing roll provided on the downstream side of the stacking drum in the rotation direction, and further on the downstream side in the rotation direction, the region not including the middle-high recesses in the width direction of the stacking recesses ( In general, a fiber stacking apparatus for restacking fibers on both sides) is described.
  • the middle and high concave portions in the concave portion for accumulation are deeper than the other concave portions, among the excess portion (central region) of the pulp, the middle and high portions are used.
  • the recess is only slightly scraped off, and a desired height (basis weight) can be stably formed.
  • the recesses other than the recesses for middle and high are scraped more than the recesses for middle and high, and the excessive accumulation state is eliminated.
  • the scraped portion is re-stacked in the both side regions where the amount of accumulation is low, the height (basis weight) of the peripheral portions other than the middle and high portions is made substantially uniform.
  • the adjusting body is not arranged on the inside (non-pulp accumulation side) of the middle / high recess, the suction force is also strong, and the pulp is excessively extended in the circumferential direction of the region (center region) including the middle / high recess.
  • the pulp can be concentrated in the middle and high recesses. Therefore, a higher (higher basis weight) medium-high portion can be formed, and the amount of pulp scraped off by the scuffing roll can be suppressed.
  • Patent Document 3 discloses a fiber other than the fiber material supplied at the upstream side of the stacking drum with the fiber material supplied by the first duct and stacked in the recesses for the middle and high parts in the stacking recesses by a scuffing roll.
  • a two-stage product that scrapes the material and feeds the fiber material onto the fiber material stacked in the middle-high portion concave portion by the second duct at the position downstream of the pile drum, and causes the fiber to accumulate in the accumulation concave portion.
  • a fiber device is described.
  • JP 2010-35701 A JP2015-126872A Special table 2006-500155 gazette
  • the present invention has a rotating drum having a concave portion for accumulation on the outer peripheral surface, and a duct for supplying a compact material in a scattered state toward the outer peripheral surface of the rotating drum, and by suction from the inside of the rotating drum.
  • the absorbent body manufacturing apparatus is configured to manufacture an absorbent body by stacking the molded body material in the accumulation recess by the generated air flow.
  • the accumulation recess has a first region and a second region deeper than the first region, and is disposed opposite to the outer peripheral surface of the rotating drum inside the duct and stacked.
  • a scuffing roll that scrapes off an excessive amount of the molded body material, and a scattered state of the molded body material that is disposed at a position spaced from the scuffing roll on the upstream side in the rotational direction of the rotating drum and scraped off by the scuffing roll.
  • a scuffing guide part for separating the drum in the drum width direction.
  • the scuffing guide portion has a convex top portion toward the downstream side in the rotation direction of the rotating drum as viewed from above in the normal direction of the outer peripheral surface of the rotating drum.
  • the present invention provides an absorbent body in which a molded body material is supplied in a scattered state to a rotating drum having a stacking recess on the outer peripheral surface, and the molded body material is stacked on the stacking recess to produce an absorbent body. It is a manufacturing method.
  • the manufacturing method of the absorbent includes supplying the molded body material in a scattered state toward the outer peripheral surface of the rotating drum, and stacking the molded body material into the stacking recesses; After the step, scraping off the excessively stacked shaped body material using a scuffing roll disposed opposite to the outer peripheral surface of the rotating drum, and restacking the scraped shaped body material; It has.
  • the molded material in a scattered state scraped with the scuffing roll is removed by a scuffing guide portion disposed at a position spaced from the scuffing roll on the upstream side in the rotation direction of the rotary drum. Separating in the drum width direction of the rotating drum, restacking is performed on both sides of the accumulation recess.
  • FIG. 1 is a schematic perspective view showing an embodiment (this embodiment) of an absorbent body manufacturing apparatus according to the present invention.
  • FIG. 2 is a sectional view schematically showing a section taken along line II-II in FIG.
  • FIG. 3 is a diagram in which the main part of the region corresponding to FIG. 2 in the manufacturing apparatus shown in FIG. 4 is a cross-sectional view schematically showing a cross section taken along line IV-IV in FIG.
  • FIG. 5 is a diagram in which the outer peripheral portion (recess for accumulation) of the rotating drum in the manufacturing apparatus shown in FIG.
  • FIG. 6 is an exploded perspective view of the outer peripheral portion of the rotating drum shown in FIG.
  • FIG. 7 is a cross-sectional view schematically showing a part of FIG.
  • FIG. 8 is a cross-sectional view schematically showing a main part of a region corresponding to FIG. 2 in a state where the manufacturing apparatus shown in FIG. 1 is operated.
  • FIG. 9 is a diagram in which a main part of a region corresponding to FIG. 2 in a state where the manufacturing apparatus shown in FIG.
  • FIG. 10 is a perspective view showing the piled product released from the accumulation recess of the rotating drum in the manufacturing apparatus shown in FIG.
  • the fiber stacking device described in Patent Document 1 only supplies the fiber material scraped off by the scuffing roll again to the upstream side of the duct via another conveyance path. Moreover, since the concave portions for middle and high and the other concave portions for accumulation have the same suction force, the accumulated thickness of pulp (basis weight of the pile) is the same in each region of the concave portion for accumulation.
  • the outer surface of the stacking part corresponding to the inner and high part recesses in the inner part is recessed compared to the outer surface of the stacking part corresponding to the stacking recesses other than the middle and higher part recesses.
  • an excess portion (central region) of the pulp is scraped off with a scuffing roll, and in the width direction of the concave portion for accumulation, a region (generally both side portions) is not included.
  • a region generally both side portions
  • the fiber is restacked to the area
  • not all of the scraped pulp is restacked to the area (generally the both sides area) that does not include the mid-high recess, and some of the pulp is not
  • the fibers are re-fabricated in a region (generally, a central region) including the same.
  • Patent Document 2 an adjustment body is not arranged on the inner side of both side regions, as in the case of the inside of the middle / high recesses, so that the pulp scraped off as much as possible is restacked on both side regions, and the suction force is strengthened. But that was not enough. Then, there will be pulp that will be scraped over and over again, the weight of the absorber will become unstable, the basis weight of the surrounding area will not be uniformed, and the pulp in which the restacked fiber area will be scraped repeatedly There is a risk that the system may be filled and the continuous operation of the apparatus becomes impossible.
  • the protrusions for scraping the pulp are formed on the entire surface of the scuffing roll in the width direction, the pulp that has been restacked in the area (generally the areas on both sides) that do not include the middle / high recesses is scraped again. There was a risk that efficiency would be reduced.
  • the fiber material is first stacked in the mid-high portion recess, and then the fiber material is stacked in the stacking recess other than the mid-high portion recess.
  • the pulp accumulated in the collecting recesses other than the medium-high recesses is simply removed with a scuffing roll or the like, so that the pulp gradually accumulates in the first molding chamber.
  • continuous processing for a long time cannot be performed.
  • an object of the present invention is to provide an absorbent body manufacturing apparatus that can eliminate the above-mentioned drawbacks of the prior art.
  • FIG. 1 shows an outline of a production apparatus which is a preferred embodiment of the production apparatus for an absorbent body of the present invention.
  • the manufacturing apparatus 1 of the present embodiment includes a rotating drum 2 having an accumulation recess 22 on an outer peripheral surface 21 and a duct 4 that supplies a molded material in a scattered state toward the outer peripheral surface 21 of the rotating drum 2.
  • the absorbent body 3 is manufactured by stacking the molded body material into the accumulation recess 22 by the air flow generated by suction from the inside of the rotary drum 2.
  • the accumulation recess 22 has a first region and a second region deeper than the first region. As shown in FIG.
  • the second region of the accumulation recess 22 is formed by a middle-high recess 23 deeper than the accumulation recess 22 disposed in the central region of the accumulation recess 22 in the manufacturing apparatus 1.
  • the first region of the accumulation recess 22 is formed by the accumulation recess 22 excluding the middle-high recess 23 in the central region. That is, the manufacturing apparatus 1 of the present embodiment includes a rotating drum 2 having an accumulation recess 22 on the outer peripheral surface 21 and a middle-high recess 23 deeper than the accumulation recess 22 in the central region of the accumulation recess 22. And a duct 4 that supplies the molded body material in a scattered state toward the outer peripheral surface 21 of the rotary drum 2.
  • the manufacturing apparatus 1 includes a rotating drum 2 that is rotationally driven in the direction of arrow R2, a duct 4 that supplies a molding material to the outer peripheral surface 21 of the rotating drum 2, and the rotating drum 2 , A transfer roll 5 that is rotationally driven in the direction of arrow R5, a vacuum conveyor 6 disposed below the transfer roll 5, and a cutting device 7.
  • a vacuum box 11 is further provided between the duct 4 and the transfer roll 5 in the circumferential direction of the rotary drum 2, and a mesh belt 13 is provided between the vacuum box 11 and the rotary drum 2 and
  • the windshield plate 15 is disposed so as to pass between the transfer roll 5 and the rotary drum 2, and is provided close to the outer peripheral surface of the transfer roll 5.
  • the manufacturing apparatus 1 is provided with the vacuum box 11 and the wind shield plate 15, but may not be provided.
  • the rotation direction of the rotary drum 2 is a rotation direction in an arrow R2 direction that is opposite to the conveyance direction of a core wrap sheet 37 described later, and the rotation direction of the transfer roll 5 is the core direction.
  • the rotation direction is the arrow R5 direction which is the forward direction with respect to the conveyance direction of the wrap sheet 37.
  • the duct 4 is disposed inside the duct 4 so as to face the outer peripheral surface 21 of the rotary drum 2, and scrapes off an excessive amount of formed material to be stacked, and the rotation direction of the rotary drum 2 from the scuffing roll 42 ( (R2 direction)
  • a scuffing guide portion 43 is provided that separates the molded material in a scattered state, which is disposed at a position spaced upstream from the scuffing roll 42 and separated in the drum width direction (2Y direction) of the rotary drum 2.
  • one end side of the duct 4 is located on the space B of the rotating drum 2 and covers the outer peripheral surface of the rotating drum 2 over the entire region of the space B, and is not illustrated.
  • a molded body material introducing device (not shown) is provided.
  • the molded body material introducing device includes, for example, a pulverizer that pulverizes sheet-like wood pulp into defibrated pulp and feeds the defibrated pulp (fiber material) into the duct 4.
  • a water-absorbing polymer introduction part for introducing water-absorbing polymer particles in the middle of the duct 4 can also be provided.
  • the scuffing roll 42 is disposed so as to face the outer peripheral surface 21 of the rotary drum 2 so as to contact the molded body material stacked on the outer peripheral surface 21, as shown in FIGS. 1 to 3. ing. Then, the scuffing roll 42 is disposed inside the duct 4 so as to scrape off the excessive amount of the molded body material that has been piled and restack the scraped-off molded body material.
  • the scuffing roll 42 includes a cylindrical roll body 421 and a plurality of scraping protrusions 422 erected on the outer peripheral surface of the roll body 421. In the drum width direction (2Y direction), the scuffing roll 42 has a roll main body 421 that is disposed over the entire width of the concavity 22 for accumulation on the outer peripheral surface 21 that faces the scuffing roll 42.
  • the plurality of protrusions 422 may be arranged over the entire width of the opposing accumulation recesses 22, but in the manufacturing apparatus 1, as shown in FIG. 3, the rotating drum 2 is configured on the outer peripheral surface of the roll body 421. It arrange
  • the roll main body 421 constituting the scuffing roll 42 is a region 421T in which a plurality of protrusions 422 are arranged at the central portion in the rotation axis direction, and a region other than the region 421T, and the rotation axis Regions having no projections 422 at both ends in the direction.
  • the protrusions 422 are not arranged at both ends in the rotation axis direction, there are no protrusions at intervals longer than the interval in the rotation axis direction between the protrusions 422 in the region 421T.
  • a material for forming the protrusions 422 a metal such as stainless steel, aluminum, or iron, or a synthetic resin is used.
  • a brush that becomes the stainless protrusions 422 is used.
  • the height of the protrusions 422 constituting the scuffing roll 42 can be appropriately set according to the amount of the molded body material to be scraped, but in the manufacturing apparatus 1, the height of the protrusion 422 is the height of the roll body 421 of the scuffing roll 42.
  • the height is preferably about 1 mm to 10 mm from the peripheral surface, and particularly preferably about 4 mm to 6 mm.
  • the clearance between the top of the protrusion 422 constituting the scuffing roll 42 and the concave portion 22 for accumulation on the outer peripheral surface 21 can be appropriately set according to the amount of the molded material to be scraped. As shown in FIG.
  • a clearance is set at a position where the top of the protrusion 422 reaches an outer surface 29 a of a ring plate 29 described later that forms the outermost surface of the rotary drum 2.
  • the clearance may be adjusted by adjusting the height of the protrusion 422 (the amount of protrusion from the roll main body 421) or by moving the position of the roll main body 421 itself to adjust the distance from the rotating drum 2.
  • the scuffing roll 42 receives power from a motor such as a motor and rotates around the horizontal axis. As shown in FIGS. 2 and 3, the scuffing roll 42 is driven to rotate in the direction of the arrow R ⁇ b> 3 in the manufacturing apparatus 1, and the surface facing the rotating drum 2 moves in the direction opposite to the rotating direction of the rotating drum 2. Rotating to do. That is, in the manufacturing apparatus 1, the rotation directions of the scuffing roll 42 and the rotating drum 2 are the same.
  • the peripheral speed of the scuffing roll 42 is 2 in comparison with the peripheral speed of the rotary drum 2 from the viewpoint of the balance between the amount of scraping of the molded body material and restacking of the scraped molded body material in the near field.
  • the peripheral speed of the scuffing roll 42 means the peripheral speed on the surface of the roll body 421, and the peripheral speed of the rotating drum 2 is the peripheral speed on the surface of a ring plate 29, which will be described later, which forms the outer peripheral surface 21 of the rotating drum 2. Means.
  • the scuffing guide portion 43 is disposed inside the duct 4 as shown in FIGS.
  • the scuffing guide portion 43 is viewed from the outside in the normal direction of the outer peripheral surface 21 of the rotating drum 2 (the direction orthogonal to the rotating shaft direction of the rotating drum 2) from the top, and the scuffing roll 42 side, that is, the rotating drum 2 rotates. It has the convex top part 431 toward the direction downstream side.
  • a material for forming the scuffing guide portion 43 a synthetic resin or a metal such as stainless steel, aluminum, iron or the like is used. In the manufacturing apparatus 1, a stainless steel material is used.
  • the scuffing guide portion 43 has a width from the outer side in the normal direction of the outer peripheral surface 21 of the rotating drum 2 as viewed from above, and the width thereof extends from the upstream side in the rotational direction (R2 direction) of the rotating drum 2 to the downstream side in the rotational direction (top portion 431). However, in the manufacturing apparatus 1, it gradually decreases as shown in FIG.
  • both side walls 43 s and 43 s that form the top 431 of the scuffing guide portion 43 are erected in the normal direction of the outer peripheral surface 21 of the rotating drum 2, respectively, and the distance between the side walls 43 s and 43 s is Further, it gradually decreases from the upstream portion 43f on the upstream side in the rotational direction (R2 direction) of the rotary drum 2 toward the top portion 431 side on the downstream side in the rotational direction.
  • the top view of the object such as the scuffing guide portion 43 from the outside in the normal direction of the outer peripheral surface of the rotating drum 2 is also referred to as a plan view of the object such as the scuffing guide portion 43.
  • the scuffing guide portion 43 is rotated in the region 421 ⁇ / b> T in which the top portion 431 is positioned in the roll body 421 of the scuffing roll 42 in a plan view. It coincides with the central portion of the drum 2 in the rotation axis direction.
  • the molding material scraped off by the scuffing roll 42 is removed by the scuffing guide portion 43. It can be separated into substantially equal amounts, and can be restacked on both sides of the excessively stacked portion of the accumulation recess 22.
  • the scuffing guide portion 43 is formed of an excessive amount of molded material that is stacked so that the width of the upstream portion 43 f overflows in the accumulation recess 22 in a plan view.
  • the width is the same as the width. That is, the width of the upstream portion 43 f of the scuffing guide portion 43 is formed to be the same length as the interval between a pair of partition plates 41, 41 described later in the accumulation recess 22.
  • the scuffing guide portion 43 is disposed at a position where the concave portion 23 for the middle and high height (second region) overlaps, and the width of the upstream portion 43 f of the scuffing guide portion 43 is equal to or wider than the width of the concave portion 23 for the middle and high height. Is preferred.
  • the scuffing guide portion 43 has a bottom surface 43 d that faces the outer peripheral surface 21 of the rotating drum 2 and extends in the rotational direction (R2 direction) along the outer peripheral surface 21 of the rotating drum 2. ing.
  • the position of the bottom surface 43d of the scuffing guide portion 43 is set in the normal direction of the outer peripheral surface 21 relative to the position of the top portion of the protrusion 422 closest to the outer peripheral surface 21 of the rotating drum 2 as the roll body 421 of the scuffing roll 42 rotates. It is preferable that it is located outward.
  • the bottom surface 43d of the scuffing guide portion 43 is spaced from the outer peripheral surface 21 of the rotating drum 2 to a position where it does not come into contact with the top of the excessive amount of molded material that is piled up so as to overflow in the accumulation recess 22. More preferably.
  • the duct 4 has a hanging plate 44 that hangs down from the top surface of the duct 4 as shown in FIGS.
  • the inside of the duct 4 is divided by the hanging plate 44 into a stacking region PT on the upstream side in the rotation direction (R2 direction) of the rotary drum 2 and a restacking region RPT on the downstream side in the rotation direction (R2 direction).
  • a scuffing roll 42 and a scuffing guide portion 43 are arranged in the restacked fiber region RPT inside the duct 4.
  • the manufacturing apparatus 1 as shown in FIG.
  • the rotation direction in the restacking region RPT inside the duct 4 ( A scuffing roll 42 is disposed on the downstream side (R2 direction), a scuffing guide portion 43 is disposed on the upstream side in the rotational direction (R2 direction), and the scuffing roll 42 and the scuffing guide portion 43 are disposed apart from each other.
  • the fiber accumulation region PT inside the duct 4 is a region where the scattered compact material is excessively accumulated so as to overflow the accumulation recess 22.
  • the restacking region RPT inside the duct 4 is used for collecting the excessively formed molding material by the scuffing roll 42 and collecting the scraped molding material using the scuffing guide portion 43. This is a region where the fibers are restacked on both sides of the excessively stacked portion of the recess 22.
  • the hanging plate 44 protrudes from the top surface of the duct 4 toward the upstream side in the circumferential direction (2X direction) of the rotating drum 2 over the entire width of the duct 4, as shown in FIGS. 1 and 3. It is formed in a curved shape.
  • the tip of the hanging plate 44 hangs down to a position where it does not touch the top of an excessive amount of molded material that is piled up so as to overflow.
  • the scuffing roll 42 is partitioned inside the duct 4.
  • the stacking region PT (the region where the defibrated molded material is stacked on the surface of the rotating drum 2) and the restacking region RPT (the scuffing roll 42).
  • the area in which the scraped molded body material is restacked) is divided, and the molded body material scraped by the scuffing roll 42 in the restacked fiber area RPT is stacked only in the restacked fiber area RPT.
  • the molded body material scraped off in the restacking region RPT does not reach the stacking region PT, it is difficult to hinder the stacking of the molded body material in the stacking region PT.
  • the hanging plate 44 is not provided, the position where the scraped molded material is restacked in the accumulation recess 22 varies, and it happens that there are a lot of parts that have been restacked and a part that has not been restacked so much.
  • the basis weight is likely to vary, the molding material scraped off by the scuffing roll 42 flows along the curved surface of the drooping plate 44 by providing the drooping plate 44 formed in a curved surface, and the accumulation recess 22 ( Since the fiber is restacked on both sides of the excessively stacked portion of the accumulation recess 22, the restacking position is stabilized, and the basis weight accumulated on both sides of the accumulation recess 22 is stabilized.
  • the scuffing guide portion 43 is fixed to the hanging plate 44 as shown in FIGS. 1 and 2.
  • a scuffing guide portion 43 is disposed at a position spaced upstream from the scuffing roll 42 in the rotational direction (R2 direction), and the top surface 43u of the scuffing guide portion 43 extends along the drooping plate 44 around the periphery of the rotary drum 2. It is formed in a convex curved shape toward the upstream side in the direction (2X direction).
  • the top surface 43 u side of the scuffing guide portion 43 is fixed to the inner surface of the hanging plate 44.
  • the duct 4 is located inside the duct 4 at a position spaced from the scuffing guide portion 43 to the upstream side in the rotation direction (R2 direction) of the rotary drum 2 as shown in FIGS. 1 and 4. It has a pair of partition plates 41 and 41 arranged on both sides along the two circumferential directions (2X direction). In the manufacturing apparatus 1, the pair of partition plates 41, 41 are arranged in the pile region PT on the upstream side in the rotational direction (R2 direction) inside the duct 4 divided by the hanging plate 44.
  • the pair of partition plates 41, 41 so that the molded material in a scattered state supplied from the duct 4 overflows from the accumulation recess 22 into a region corresponding to the space between the pair of partition plates 41, 41 in the accumulation recess 22.
  • the pair of partition plates 41 and 41 are arranged with an interval between them so that the fibers are excessively stacked.
  • the pair of partition plates 41 and 41 extend along both side portions along the circumferential direction (2X direction) of the rotating drum 2 as shown in FIG. 1.
  • the pair of partition plates 41, 41 are disposed between the rotary drum 2 and a molding material introduction device (not shown) on the other end side of the duct 4, and on the outer peripheral surface of the rotary drum 2.
  • the ring plate 29 is disposed on a pair of ring plates 29 and 29, which will be described later, and extends in the circumferential direction (2X direction) along the ring plate 29. Further, in the drum width direction (2Y direction), each partition plate 41 cross-sections as shown in FIG.
  • each partition plate 41 extends from each side wall 40 constituting the duct 4 to a ring plate 29 (to be described later), and in the circumferential direction in the middle-high recess 23 in the central region of the stacking recess 22 disposed in the rotary drum 2. It extends to the vicinity of the side edge along (2X direction).
  • the pair of partition plates 41, 41 may be plate-like ones extending in parallel to the drum width direction (2Y direction) as long as they extend to such a position.
  • each partition plate 41 has a substantially right-angled triangular cross section or a trapezoidal shape in which the upper base is extremely narrower than the lower base. It has a quadrangular frustum shape with a cross section.
  • the pair of partition plates 41 and 41 having such a quadrangular pyramid shape are spaced apart from each other in the drum width direction (2Y direction), and the opposing surfaces of the molded body material introducing device (the other end side of the duct 4) ( (Not shown) inclined from the side toward the rotary drum 2 so that the interval between the pair of partition plates 41, 41 gradually decreases, and the interval between the end portions 41a, 41a on the rotary drum 2 side of the pair of partition plates 41, 41 is accumulated.
  • each partition plate 41 is formed in contact with the side wall constituting the duct 4.
  • a forming material of such a partition plate 41 a metal, a synthetic resin, or a material combining them can be used.
  • the rotating drum 2 has a cylindrical shape as shown in FIG. 1, and rotates around a horizontal axis by receiving power from a motor such as a motor.
  • the rotary drum 2 has an accumulation recess 22 on the outer peripheral surface 21 of which the compact material is piled, and further the drum width direction (2Y of the rotation drum 2 in the accumulation recess 22 And a middle-high recess 23 that is deeper than the integration recess 22.
  • a plurality of stacking recesses 22 including the middle-high recesses 23 are formed at predetermined intervals in the circumferential direction (2X direction) of the rotary drum 2.
  • the 2X direction is the circumferential direction of the rotating drum 2
  • the 2Y direction is the drum width direction of the rotating drum 2 (a direction parallel to the rotation axis of the rotating drum 2).
  • the rotary drum 2 includes a cylindrical drum body (not shown) made of a metal rigid body, a suction adjustment plate 24 fixed to the outer periphery of the drum body, and the suction drum.
  • the rotary drum 2 is formed by fixing the drum body and the plates 24 to 29 to each other by a known fixing means such as a bolt or an adhesive.
  • a known fixing means such as a bolt or an adhesive.
  • the bottom surface 23 a of the middle / high recess 23, which is the fiber surface on which the molded body material is deposited has a medium / high porous plate 25 (porous member) having a plurality of (many) suction holes. ).
  • the bottom surface 22a of the concave portion 22 for accumulation which is a fiber surface to be stacked with the molded body material, is composed of a porous plate 27 except for the concave portion 23 for middle and high portions. .
  • each component of the rotary drum 2 (the suction adjustment plate 24, the medium / high porous plate 25, the space plate 26, the porous plate 27, the recessed section plate 28, the ring plate 29, etc.)
  • the surface of the component member is directed to the supply side of the molded body material when the molded body material is stacked.
  • the inner surface of each constituent member is a surface directed to the side opposite to the supply side of the molding material (the inner side of the rotating drum) when the molding material is stacked in the constituent member.
  • a molded object material is an absorber raw material.
  • the molded body material includes a fiber material.
  • various materials conventionally used for absorbent articles of absorbent articles such as sanitary napkins, panty liners, and disposable diapers can be used without particular limitation.
  • pulp fibers such as defibrated pulp, short fibers of cellulosic fibers such as rayon fibers and cotton fibers, and short fibers of synthetic fibers such as polyethylene are used. These fiber materials can be used alone or in combination of two or more.
  • a fibrous water-absorbing polymer can be used alone or together with the fibrous material.
  • a deodorant, an antibacterial agent, etc. can also be used with a fiber material etc. as needed.
  • the ring plate 29 is a member whose outer surface 29 a is located on the outermost side of the rotary drum 2 and forms a part of the outer peripheral surface 21, and a member that forms the outer peripheral surface of the accumulation recess 22.
  • the “outer peripheral surface of the stacking recess 22” refers to an outer surface along the outline of the stacking recess 22 when the stacking recess 22 is viewed from above in the normal direction of the outer peripheral surface 21 of the rotary drum 2. means.
  • the stacking recess 22 has a rectangular outline that is long in the transport direction when the stacking recess 22 is viewed in plan view, so that the pair of ring plates 29 and 29 are provided on both sides of the rotary drum 2.
  • Each ring plate 29 is formed to extend with the same width over the entire circumference of the rotary drum 2.
  • Each ring plate 29 is formed to have a constant thickness.
  • the width between the pair of ring plates 29 and 29 determines the width of the accumulation recess 22, and the thickness of the ring plate 29 determines the depth of the accumulation recess 22.
  • the pair of ring plates 29 and 29 are non-breathable so as not to allow air to pass except for a portion between them.
  • “non-breathable” includes both the meanings of “non-breathable that does not allow air to pass through” and “non-breathable that allows a very small amount of air to pass but does not substantially pass air”. It means non-breathable.
  • ring plate 29 for example, a plate or mold in which an opening (a space corresponding to the three-dimensional shape in the recess 22) is formed by machining a metal or resin plate such as stainless steel or aluminum or the like. It is possible to use a plate in which the opening is integrally formed, a punched or etched plate, or a laminate of these plates.
  • the concave partition plate 28 includes a plurality of cross-shaped openings 281 penetrating in the thickness direction, a cross-shaped opening defining member 282 that partitions each cross-shaped opening 281, It has the some opening part 283 penetrated in the thickness direction, and the opening part definition part 284 which divides and forms each opening part 283.
  • FIG. A plurality of cross-shaped openings 281 are intermittently arranged in the circumferential direction (2X direction).
  • the opening defining portion 284 includes a plurality of MD defining members 285 extending in parallel to the transport direction in a region excluding the plurality of cross-shaped openings 281 (cross-shaped opening defining members 282) in plan view.
  • the opening defining portion 284 is formed in a lattice shape by intersecting a plurality of MD defining members 285 and a plurality of CD defining members 286, and each opening portion 283 has an opening in the lattice shape. It is located in the part of the grid
  • FIG. 1 A block diagram illustrating an a lattice shape.
  • the cross-shaped opening defining member 282 and the opening defining portion 284 having the MD defining member 285 and the CD defining member 286 have air permeability that prevents air from passing therethrough.
  • the “non-breathable” here is as described above.
  • metals such as stainless steel, aluminum, and iron, resins, or a combination thereof can be used.
  • the plurality of cross-shaped openings 281 and the plurality of openings 283 included in the recess partition plate 28 are arranged in a region sandwiched between a pair of ring plates 29 and 29 that are fixed over the outer surface 28a of the recess partition plate 28. Has been.
  • the cross-shaped opening defining member 282 and the lattice-shaped opening defining member 284 constituting the concave partition plate 28 are formed to have a constant thickness. Similar to the thickness of the ring plate 29, the thickness of the concave section plate 28 is also one of the factors that determine the depth of the concave section 22 for accumulation.
  • the porous plate 27 has a plurality of cross-shaped openings 271 as shown in FIG.
  • the cross-shaped opening 271 of the porous plate 27 is disposed at the same position as each cross-shaped opening 281 of the recessed section partition plate 28 fixed to be overlapped with the outer surface 27 a of the porous plate 27.
  • the plurality of cross-shaped openings 271 of the porous plate 27 and the plurality of cross-shaped openings 281 of the recessed partition plate 28 correspond one-to-one, and the shapes in plan view are similar to each other.
  • the cross-shaped opening 271 of the porous plate 27 has a similarity ratio of 1 to the corresponding cross-shaped opening 281 of the recessed partition plate 28, and the opening 271 and the opening 281 are planar.
  • the visual shapes are congruent with each other.
  • the porous plate 27 is a member that forms the bottom surface 22a of the accumulation recess 22 excluding the middle / high recess 23.
  • the porous plate 27 transmits an air flow (vacuum air) generated by suction from the inside of the manufacturing apparatus 1 (inward of the rotating drum 2) to the duct 4 covering the rotating drum 2, and rides on the air flow. It is a breathable plate that holds the molded body material that is carried without being permeated and allows only air to permeate.
  • porous plate 27 a plurality of (multiple) suction holes (pores) penetrating the plate 27 in the thickness direction are formed in a region excluding the plurality of cross-shaped openings 271; While the accumulation recess 22 passes through the space maintained at a negative pressure in the rotary drum 2, the suction hole functions as an air flow permeation hole.
  • a metal or resin mesh plate, or a metal or resin plate formed with a plurality of (many) pores by etching or punching can be used as the porous plate 27 for example.
  • the space plate 26 includes an annular defining member 261 formed along the outline of each cross-shaped opening 271 of the porous plate 27 fixed to be overlapped with the outer surface 26 a of the space plate 26.
  • a plurality of MD defining members 262 extending in parallel with the conveying direction, and a plurality of CD defining members 263 extending in parallel with the drum width direction (2Y direction) (extending in a direction perpendicular to the conveying direction). ing.
  • the MD defining member 262 and the CD defining member 263 not only intersect with each other but also intersect with the annular defining member 261 to form a lattice shape.
  • the space plate 26 is positioned at the grid portion where the MD defining member 262 and the CD defining member 263 intersect, and is formed in a plurality of annular shapes penetrating in the thickness direction.
  • An inner opening 264 is provided.
  • the space plate 26 is located at the grid portion where the MD defining member 262 and the CD defining member 263 intersect, and has a plurality of openings penetrating in the thickness direction. Part 265.
  • the plurality of annular defining members 261 of the space plate 26 have a similarity ratio of 1 to the contour of the cross-shaped opening 271 of the corresponding porous plate 27. Therefore, the annular defining member 261 includes not only the outline of the opening 271 of the porous plate 27 but also the cross-shaped opening 281 of the recessed partition plate 28 that has a congruent relationship with the opening 271 of the porous plate 27.
  • the shape of the opening defining member 282 to be defined also has a congruent relationship in shape in plan view.
  • the opening portion 265 of the space plate 26 has a similarity ratio of 1 to the opening portion 283 of the corresponding recessed section partition plate 28, and the opening portion 265 and the opening portion 283 have the same shape in plan view. Are in a relationship.
  • the annular defining member 261, the MD defining member 262, and the CD defining member 263 constituting the space plate 26 are formed with a constant thickness.
  • the thickness of the space plate 26 is one of the factors that determine the depth of the middle-high recess 23 in the central region of the accumulation recess 22.
  • the annular defining member 261, the MD defining member 262, and the CD defining member 263 of the space plate 26 are non-breathable so as not to allow air to pass therethrough.
  • the “non-breathable” here is as described above.
  • a metal such as stainless steel, aluminum, iron, or a resin, or a combination thereof. it can.
  • a plurality of medium / high porous plates 25 are arranged in a cross shape.
  • Each cross-shaped medium / high porous plate 25 is disposed at the same position as each annular defining member 261 of the space plate 26 fixed to be overlapped on the outer surface 25 a of the medium / high porous plate 25.
  • the outlines of the plurality of cross-shaped medium-high porous plates 25 and the plurality of annular defining members 261 of the space plate 26 have a one-to-one correspondence, and the shapes in plan view are similar to each other.
  • the cross-shaped medium / high porous plate 25 has a similarity ratio of 1 to the annular defining member 261 of the corresponding space plate 26.
  • the cross-shaped medium-to-high porous plate 25 has not only the same outline as the annular defining member 261 but also the entire shape of the opening 271 of the porous plate 27 and the concave partition plate 28. These cross-shaped openings 281 also have a congruent relationship in plan view.
  • the medium / high porous plate 25 is a member that forms the bottom surface 23 a of the medium / high recess 23.
  • the medium / high porous plate 25 is a duct that covers the rotary drum 2 with an air flow (vacuum air) generated by suction from the inside of the manufacturing apparatus 1 (inward of the rotary drum 2).
  • 4 is an air-permeable plate that transmits the air in the air flow and holds the molded body material carried on the air flow without transmitting it, and allows only air to pass through.
  • a plurality of (multiple) suction holes (pores) that penetrate through the plate 25 in the thickness direction are formed in the middle / high porous plate 25 in a uniform distribution.
  • the suction hole While passing through the space maintained at a negative pressure in the rotary drum 2, the suction hole functions as an air flow permeation hole.
  • the medium / high porous plate 25 for example, a metal or resin mesh plate, or a metal or resin plate formed with a plurality of (many) pores by etching or punching can be used.
  • the suction adjusting plate 24 includes an annular defining member 241 formed along the contour of the cross-shaped medium-to-high porous plate 25 that is fixed to the outer surface 24 a of the suction adjusting plate 24.
  • the MD defining member 242 and the CD defining member 243 not only intersect with each other but also intersect with the annular defining member 241 to form a lattice shape.
  • the suction adjusting plate 24 is positioned at the grid portion where the MD defining member 242 and the CD defining member 243 intersect, and a plurality of suction adjusting plates 24 penetrates in the thickness direction.
  • An annular inner opening 244 is provided.
  • the plurality of annular inner openings 244 of the suction adjustment plate 24 is different from the plurality of annular inner openings 264 of the space plate 26 fixed on the outer surface 24a of the suction adjustment plate 24 via the medium / high porous plate 25. They correspond to each other, and the shapes in plan view are similar to each other.
  • the annular inner opening 244 of the suction adjustment plate 24 has a similarity ratio of 1 to the corresponding annular inner opening 264 of the space plate 26, and the annular inner opening 244 and the annular inner opening 264 are:
  • the planar view shapes are in a congruent relationship.
  • the suction adjusting plate 24 is located at the grid portion where the MD defining member 242 and the CD defining member 243 intersect in the region excluding the annular defining member 241, and in the thickness direction. And a plurality of openings 245 penetrating through the substrate.
  • the plurality of openings 245 of the suction adjustment plate 24 have a one-to-one correspondence with the plurality of openings 265 of the space plate 26 fixed on the outer surface 24a of the suction adjustment plate 24 via the medium / high porous plate 25.
  • the planar view shapes are similar to each other.
  • the opening 245 of the suction adjustment plate 24 preferably has a similarity ratio of the corresponding space plate 26 to the opening 265 of less than 1, and the relative ratio is 0.05 or more and 0.5 or less. That is, the opening area of the opening 245 of the suction adjustment plate 24 is narrower than the opening area of the opening 265 of the space plate 26.
  • the ratio (S2 / S1) of the opening area (S2) to the opening area (S1) of the opening 265 of the space plate 26 in the opening 245 of the suction adjustment plate 24 is preferably 5% or more and 50% or less, more preferably It is 7% or more and 15% or less.
  • the annular defining member 241, the MD defining member 242, and the CD defining member 243 constituting the suction adjusting plate 24 are formed to have a constant thickness.
  • the annular defining member 241, the MD defining member 242, and the CD defining member 243 of the suction adjustment plate 24 have a non-breathability that prevents air from passing therethrough.
  • the “non-breathable” here is as described above.
  • a metal such as stainless steel, aluminum, iron or the like, a resin, or a combination thereof may be used. it can.
  • the rotary drum 2 includes a suction adjusting plate 24 configured as described above, a plurality of medium / high porous plates 25, a space plate 26, a porous plate 27, a recessed section plate 28, and a pair of ring plates 29. Are fixed to each other.
  • the rotating drum 2 provided in the manufacturing apparatus 1 of the present embodiment configured as described above has an adjustment body 20 that adjusts the suction force on the inner surface side of the porous member of the accumulation recess 22. , And is disposed on the inner surface of the porous member.
  • the adjusting body 20 has a plurality of openings penetrating the adjusting body 20 in the thickness direction, and a part of the opening is relatively relative to the opening portion relatively far from the porous member of the accumulation recess 22.
  • the opening area is smaller than the closest opening.
  • the adjusting member 20 for adjusting the suction force is not disposed on the inner surface side of the porous member of the middle-high recess 23, and the suction holes (pores) of the porous member have an opening area on the outer surface side and an inner surface side.
  • the opening area is the same. Specifically, the opening area of the opening disposed on the outer surface side of the porous member of the middle-high recess 23 and the opening area of the opening disposed on the inner surface side of the porous member are the same. This will be specifically described below.
  • the middle / high recess 23 formed on the outer peripheral surface 21 of the rotary drum 2 is viewed in plan, and the outline thereof is an annular defining member 241 of the suction adjustment plate 24.
  • the contour of the porous plate 25, the annular defining member 261 of the space plate 26, the contour of the opening 271 of the porous plate 27, and the position of the opening defining member 282 of the recessed partition plate 28 coincide to form a cross shape. Is formed.
  • the middle / high concave portion 23 of the accumulation concave portion 22 has a bottom surface 23a formed of a medium / high porous plate 25 (porous member), and a region in the middle / high concave portion 23 is seen in a plan view as shown in FIG.
  • the positions and shapes of the plurality of annular inner openings 244 of the suction adjustment plate 24 sandwiching the medium-to-high porous plate 25 and the plurality of annular inner openings 264 of the space plate 26 are the same.
  • the suction adjusting plate 24 is disposed on the inner side of the rotary drum 2 than the medium-high porous plate 25 (porous member) constituting the bottom surface 23a of the medium-high recess 23, and the medium-high porous
  • the opening area of the annular inner opening 264 of the space plate 26 disposed on the outer surface side of the porous plate 25 and the opening area of the annular inner opening 244 of the suction adjustment plate 24 disposed on the inner surface side of the medium / high porosity plate 25 Are the same.
  • the adjusting body 20 for adjusting the suction force is not disposed on the inner surface side of the middle / high porous plate 25 in the middle / high recess 23 in the accumulation recess 22.
  • the depth of the middle / high recess 23 for the stacking recess 22 is such that the thickness of the space plate 26 disposed on the medium / high porous plate 25, the thickness of the recess partition plate 28, and The ring plate 29 is formed with a thickness.
  • the concave portion 22 for accumulation formed on the outer peripheral surface 21 of the rotary drum 2 is formed in a band shape with its outline sandwiched between a pair of rectangular ring plates 29 and 29 as seen in plan view as shown in FIG. ing.
  • the accumulation recess 22 has a bottom surface 22a in a region excluding the middle / high recess 23 formed of a porous plate 27 (porous member). In the region excluding the middle / high recess 23, as shown in FIG.
  • the positions and shapes of the plurality of openings 283 of the concave section partition plate 28 and the plurality of openings 265 of the space plate 26 match, and the positions of the openings 283 and 265 are closer to the center than their opening areas.
  • An opening 245 of the narrow suction adjustment plate 24 is also arranged. That is, the opening area of the opening 245 of the suction adjustment plate 24 is narrower than the opening area of each of the opening 283 of the recessed partition plate 28 and the opening 265 of the space plate 26.
  • the space plate 26 and the suction adjustment plate 24 are located inward of the rotary drum 2 rather than the porous plate 27 (porous member) that constitutes the bottom surface 22a of the region excluding the middle-high concave portion 23.
  • the opening area 245 of the suction adjustment plate 24 that is relatively far from the porous plate 27 (porous member) is compared with the opening 265 of the space plate 26 that is relatively close to the opening area 265.
  • the adjusting body 20 for adjusting the suction force is disposed on the inner surface side of the porous plate 27 (porous member) in the region excluding the middle-high recess 23 for the accumulation recess 22. Further, as shown in FIG. 4, the stacking recesses 22 (excluding the mid-high recesses 23) have the depths of the thickness of the recess partition plate 28 disposed on the porous plate 27 and the thickness of the ring plate 29. Will be formed.
  • the adjusting body 20 described above is disposed on the inner surface side of the porous plate 27 (porous member) in the region excluding the middle / high recess 23 for the accumulation recess 22, the middle / high recess 23 for middle / high Compared to the case where the adjusting body 20 is not disposed as on the inner surface side of the porous plate 25 (porous member), the air flow for sucking the molded body material through the porous member by suction from the inside of the apparatus (Vacuum air) is suppressed. That is, as shown in FIG. 7, an air flow (indicated by an arrow in FIG.
  • the basis weight of the compact material depends on the amount of air flowing through the porous member. Therefore, by arranging the adjusting body 20 in a region corresponding to a portion on the inner surface side of the porous member corresponding to a portion where the basis weight of the formed material to be stacked is smaller than that of the other portion, the basis weight of the desired portion can be obtained.
  • a compact with a reduced amount can be produced with simple equipment. That is, since the adjustment body 20 is arranged on the inner surface side in the region excluding the middle and high recesses 23 for the stacking recesses 22, it becomes a low basis weight pile fiber region. Since the adjustment body 20 is not arranged on the side, it becomes a high basis weight pile fiber region.
  • FIG. 1 a space that is partitioned from each other in the circumferential direction (2X direction) of the rotating drum 2 on the inner side (rotating shaft side) of the rotating drum 2.
  • B, C and D are formed.
  • a known exhaust device such as an intake fan is connected to the space B, and the space B can be maintained at a negative pressure by operating the exhaust device.
  • External air flows into the space C by suction from the vacuum box 11 side, which will be described later, and external air flows into the space D by suction from the transfer roll 5 side.
  • the space C is separated from the space D, which is a region after the transfer, in order to satisfactorily perform transfer on the space C (transfer of the piled material in the accumulation recess 22 to the transfer roll 5 and the like).
  • the rotary drum 2 is blown (air flow) from the inside of the rotary drum 2 toward the porous plate 27 in a space (space C) corresponding to the transfer position of the piled material in the accumulation recess 22 to the transfer roll 5.
  • Generating means may be included. In that case, by actively blowing from the space C toward the vacuum box 11 using the generating means, it is possible to promote the release of the piled articles from the accumulation concave portion 22.
  • the rotating drum 2 has one end in the axial direction of the rotating shaft sealed with a plate that rotates integrally with the rotating drum 2, and the other end sealed airtight with a plate that does not rotate.
  • the spaces B to D are partitioned by a plate provided from the rotating shaft side of the rotating drum 2 toward the inner surface of the rotating drum 2.
  • the space C shown in FIG. 1 is usually set to a negative pressure or zero pressure (atmospheric pressure) that is weaker than the space B. From the viewpoint of transportability of the piled product, the space C is set to a weak negative pressure until the piled product in the stacking recess 22 is transferred to the transfer recess 5 until the piled product is transferred to the transfer roll 5. However, if there is no particular problem in transportability, the space C is preferably zero pressure in consideration of transferability. Moreover, since the space D is a region through which the accumulation concave portion 22 passes after the piled material in the accumulation concave portion 22 is transferred onto the transfer roll 5, zero pressure or positive pressure is preferable.
  • the manufacturing apparatus 1 shown in FIG. 1 of the present embodiment having the rotating drum 2 and the duct 4 configured as described above is configured such that the molded material in a scattered state is applied to the pair of partition plates 41 and 41 in the fiber accumulation region PT. Then, the fiber is excessively piled so as to overflow the corresponding region between the pair of partition plates 41, 41 in the collecting concave portion 22, and the restacked fiber region RPT scuffs the excess amount of the formed body material.
  • the molding material scraped off by the roll 42 is separated into approximately equal amounts in the drum width direction (2Y direction) by the scuffing guide portion 43, and both sides of the excessively piled portions in the accumulation recess 22 It is a device that re-stacks the fiber.
  • the transfer roll 5, the vacuum conveyor 6, the cutting device 7 and the like that the manufacturing apparatus 1 has in addition to the rotating drum 2 and the duct 4 will be described below.
  • the transfer roll 5 has a cylindrical outer peripheral portion having air permeability, and the outer peripheral portion rotates around a horizontal axis upon receiving power from a motor such as a motor.
  • a space E in which the inside can be decompressed is formed in the non-rotating portion on the inner side (rotating shaft side) of the transfer roll 5, a space E in which the inside can be decompressed is formed.
  • a known exhaust device such as an intake fan is connected to the space E, and the interior of the space E can be maintained at a negative pressure by operating the exhaust device.
  • a plurality of (many) suction holes are formed on the outer peripheral surface of the transfer roll 5 to communicate the inside and outside. While these suction holes pass over the space E maintained at a negative pressure, air is sucked into the interior from the outside, and the piled material in the accumulation recess 22 is caused to rotate by the suction force of the rotary drum 2. Smooth transition from above to the transfer roll 5.
  • the vacuum conveyor 6 is located at a position facing the transfer roll 5 with the breathable belt 63 sandwiched between the endless breathable belt 63 spanned between the drive roll 61 and the driven rolls 62, 62.
  • a conveyor vacuum box 64 is provided.
  • the vacuum box 11 on the mesh belt 13 side has a box-like shape having upper and lower surfaces, left and right side surfaces, and a rear surface, and has an opening that opens toward the rotating drum 2.
  • the vacuum box 11 is connected to a known exhaust device (not shown) such as an intake fan via an exhaust pipe (not shown), and the inside of the vacuum box 11 can be maintained at a negative pressure by the operation of the exhaust device. It is.
  • the mesh belt 13 is a belt-shaped breathable belt having a mesh connected endlessly, and is guided by a plurality of free rolls 14 and transfer rolls 5 to continuously pass a predetermined path. Move to.
  • the mesh belt 13 is driven by the rotation of the transfer roll 5.
  • the mesh belt 13 is introduced onto the outer peripheral surface of the rotating drum 2 in the vicinity of the end of the duct 4 on the side where the scuffing rolls 42 are disposed, and then the vacuum box 11 and the rotating drum 2. And between the transfer roll 5 and the rotary drum 2 are sequentially passed.
  • the mesh belt 13 While the mesh belt 13 passes in front of the opening of the vacuum box 11, the mesh belt 13 is in contact with the outer peripheral surface of the rotating drum 2, and the rotating drum is in the vicinity of the closest portion between the transfer roll 5 and the rotating drum 2. 2 moves away from the outer peripheral surface of 2 and onto the transfer roll 5.
  • the mesh belt 13 has small pores as compared to the suction holes of the transfer roll 5, and suction from the pores of the mesh belt 13 that overlaps with the suction holes with suction from the suction holes of the transfer roll 5. Done.
  • a pair of wind shield plates 15 are provided on both sides of the suction hole in the width direction of the outer peripheral surface of the transfer roll 5 so as to allow inflow of wind from the side. Is prevented or reduced to prevent the piled article released from the accumulation recess 22 from being deformed.
  • the material of the windbreak plate 15 is not particularly limited, but is preferably made of metal or synthetic resin and has a thickness of about 0.5 to 10 mm from the viewpoint of providing rigidity that can resist wind.
  • the cutting device 7 for example, in the manufacture of absorbent articles such as sanitary napkins and diapers, those conventionally used for cutting absorbent continuous bodies can be used without particular limitation.
  • the cutting device 7 shown in FIG. 1 includes a cutter roll 72 having a cutting blade 71 on the peripheral surface and an anvil roll 73 having a smooth peripheral surface for receiving the cutting blade.
  • the molded body material is supplied in a scattered state to the rotating drum 2 having the accumulation recess 22 on the outer peripheral surface 21, and the molded body material is stacked on the accumulation recess 22 to absorb the absorbent body.
  • Manufacturing Specifically, in the manufacturing method of this embodiment, the forming material is supplied to the outer peripheral surface 21 of the rotating drum 2 in a scattered state, and the forming material is stacked in the accumulation recess 22. After the fiber stacking process, the excessively stacked molding material is scraped off using a scuffing roll 42 disposed opposite to the outer peripheral surface of the rotating drum, and the scraped molding material is restacked. A fiber stacking process.
  • the exhaust device connected to each of the space B in the rotary drum 2, the space E in the transfer roll 5, and the vacuum box 11 is operated to make negative pressure.
  • an air flow vacuum air
  • the rotary drum 2 and the transfer roll 5 are rotated, and the vacuum conveyor 6 is operated.
  • each of the accumulation recesses 22 of the rotary drum 2 passes through the space B maintained at a negative pressure while the porous plate 27 and the medium and high portions constituting the bottom surfaces 22a and 23a of the accumulation recesses 22 are provided.
  • the suction from the suction part is performed through the porous plate 25 for use.
  • each accumulation recess 22 By suction from the pores of the porous material of each accumulation recess 22, an air flow is generated in the duct 4 to convey the raw material of the absorber to the outer peripheral surface of the rotary drum 2, and is carried on the air flow.
  • the raw material to be accumulated is deposited in each accumulation recess 22.
  • the molded material in the scattered state is used between the pair of partition plates 41 and 41 in the accumulation recess 22 using the pair of partition plates 41 and 41.
  • the molded material in a scattered state is accumulated in a corresponding region between the pair of partition plates 41 in the accumulation recess 22.
  • the adjusting body 20 is not disposed on the inner surface of the medium / high porous plate 25 disposed in the center region of the accumulation recess 22. And the adjustment body 20 is distribute
  • the pair of partition plates 41, 41 are spaced apart from each other toward the rotary drum 2 from the molding material introduction device (not shown) side on the other end side of the duct 4. Is inclined so that the distance between the end portions 41a, 41a of the pair of partition plates 41, 41 on the rotary drum 2 side coincides with the width of the middle-high recess 23 in the central region of the accumulation recess 22. ing. Therefore, in the fiber stacking process of the present embodiment, it is possible to accumulate the compacted material in a concentrated state on the region where the middle / high recess 23 between the pair of partition plates 41 and 41 is located. .
  • the absorption having a high basis weight ratio if the distance between the end portions 41a, 41a of the pair of partition plates 41, 41 is set in accordance with the width of the middle / high recess 23 (the width of the middle / high portion of the absorbent body 3 to be formed), the absorption having a high basis weight ratio.
  • the body can be processed. For example, when processing the absorber shown in FIG. 10 to be described later, by combining the width of the thin portion in the width direction of the thick portion (middle and high portion) 33 and the end portions 41a and 41a of the partition plate, It becomes possible to process the absorber 3 having a high quantitative ratio.
  • the middle / high recess 23 is intermittently arranged in the circumferential direction (2X direction) of the rotary drum 2. It is deeper than the concave portion 22 for accumulation except the concave portion 23 for use. Therefore, as shown in FIG. 2, in the region corresponding to the space between the pair of partition plates 41, 41, in the circumferential direction (2X direction) of the rotary drum 2, the portion where the middle-high recess 23 is arranged.
  • the height of the molded body material stacked in the corresponding region is lower than the height of the molded body material stacked in the region corresponding to the portion excluding the middle-high recess 23.
  • the excessively stacked molding material is scraped off, and the scraped molding material is restacked on both sides of the excessively stacked portion of the accumulation recess 22 ( Restacking process). More specifically, in the restacking region RPT downstream from the partition plate 41 inside the duct 4, as shown in FIGS. 1 and 2, the scuffing roll 42 that scrapes off the excessive amount of the formed body material. Scuffing that separates the molded material in a scattered state, which is disposed at a position spaced upstream from the scuffing roll 42 in the rotational direction (R2 direction) of the rotary drum 2 and scraped off by the scuffing roll 42 in the drum width direction (2Y direction). A guide portion 43 is provided.
  • the middle-high recess 23 is arranged in the circumferential direction (2X direction) of the rotary drum 2.
  • the pair of partition plates 41 , 41 in the region corresponding to between the two the height of the stacked molded material is relatively high, the excessively stacked molded material in the region corresponding to the portion excluding the middle-high recess 23,
  • the scuffing roll 42 is used for scraping.
  • the stacked material material is relatively low in height, and the region corresponding to the portion corresponding to the portion in which the middle-high recess 23 is disposed.
  • the molded body material thus made is difficult to be scraped off by the scuffing roll 42.
  • the molded body material scraped off by the scuffing roll 42 is returned to the upstream side in a scattered state in the restacked fiber region RPT in the duct 4.
  • the scuffing roller 42 is separated in the drum width direction (2Y direction) of the rotating drum 2 by the scuffing guide portion 43 disposed at a position spaced upstream of the rotating direction of the rotating drum 2 from the scuffing roll 42, and excessively stacked in the accumulation recess 22. Restack the fibers on both sides of the fiber. In the accumulation recess 22 on the upstream side of the scuffing roll 42, an excessive amount of the molding material has not yet been scraped off by the scuffing roll 42.
  • the amount of the formed material is less on the both sides along the circumferential direction (2X direction) of the rotating drum 2 of the excessively stacked portion than the excessively stacked portion.
  • the suction force is hardly hindered by the formed molded material. Therefore, the molded material separated by the scuffing guide part 43 is more easily restacked on both sides of the excessively stacked portion in the accumulation recess 22 than in the excessively stacked portion in the accumulation recess 22. .
  • the openings 245 of the suction adjustment plate 24 corresponding to both sides of the accumulation recess 22 are made larger than the other openings 245 so that the accumulation recess 22
  • the both side portions can further suppress the obstruction of the suction force due to the molded body material, and the molded body material separated by the scuffing guide portion 43 is more easily restacked on both side portions of the accumulation recess 22.
  • the scuffing guide portion 43 has a top portion 431 that is convex toward the downstream side in the rotation direction of the rotating drum 2 (the scuffing roll 42 side) as seen in a plan view. Therefore, the molded body material scraped off by the scuffing roll 42 can be separated by the scuffing guide portion 43, and can be restacked on the both side portions of the adjacent concave portion 22 for collection.
  • the thick part (middle high part) and the thin part (periphery part of the middle high part) of the desired height can be produced without causing the vibration of the basis weight) or overflowing the molding material scraped off in the restacked fiber area.
  • the absorber provided can be manufactured stably.
  • the top portion 431 is preferably a fine curved surface having an acute angle or a curvature radius of 10 mm or less.
  • a fine air injection port is provided in the top portion 431 so as to oppose the scuffing roll 42, and the air is injected toward the molding material scraped off by the scuffing roll 42 and scattered toward the top portion 431. It is preferable that Thereby, the molding material can be reliably prevented from being caught on the top portion 431.
  • the scuffing guide portion 43 has a width from the upstream side in the rotational direction (R2 direction) to the downstream side (the top portion 431 side) of the rotary drum 2 as viewed in plan. It is gradually decreasing. Therefore, after the molded body material scraped off by the scuffing roll 42 is separated at the top portion 431, it can be reliably guided to the both side portions of the adjacent concave portion 22 for accumulation and restacked.
  • the absorbent body including the thick part and the thin part having a desired height can be manufactured more stably without causing the fluctuation of the amount) or overflowing the pulp scraped into the restacked fiber region.
  • the manufacturing apparatus 1 has a hanging plate 44 that hangs down from the top surface of the duct 4 inside the duct 4 as shown in FIG.
  • a scuffing roll 42 and a scuffing guide part 43 are arranged in the restacking region RPT inside the duct 4 divided by the hanging plate 44. Therefore, it is scraped off by the scuffing roll 42 and returned to the upstream side in a scattered state, and the molded body material separated by the scuffing guide portion 43 is returned to the adjacent neighborhood on the upstream side by the drooping plate 44. .
  • the scraped molded body material is more likely to be restacked on both sides of the excessively stacked portion in the accumulation recess 22 than in the excessively stacked portion in the accumulation recess 22.
  • the hanging plate 44 is formed in an arcuate R shape from the top surface of the duct 4 toward the rotation direction (R2 direction) of the rotary drum 2. The molded body material thus scraped off is guided to the drooping plate 44 so that it is easy to stably restack the fibers.
  • the scuffing guide portion 43 is fixed to the hanging plate 44. Therefore, the molding material separated by the scuffing guide portion 43 is reliably and stably adjoined on the upstream concave portion 22 along the curved surface of the hanging plate 44 and the side wall 43 s of the scuffing guide portion 43 that is gradually reduced. It is easy to restack the fibers on both sides.
  • the plurality of protrusions 422 constituting the scuffing roll 42 are stacked in a region between the pair of ring plates 29 and 29 on the outer peripheral surface of the roll body 421. Further, it is disposed only in a region corresponding to an excessive amount of the molding material. Specifically, in the scuffing roll 42, the region 421T in which the plurality of protrusions 422 are arranged overlaps the middle-high recess 23 (second region) in the stacking recess 22 in the drum width direction (2Y direction) in plan view.
  • the region where the protrusions 422 are not disposed is disposed at a position overlapping the region (first region) other than the middle-high recess 23 in the stacking recess 22 in the drum width direction (2Y direction). Therefore, it is possible to intensively scrape only the portion in which the molding material is excessively stacked in the central region of the stacking recess 22 where the middle and high recesses 23 are arranged, and the above-described stacking recess 22 There is no scraping of the molded body material that has been restacked on both sides. That is, the scuffing roll 42 of the manufacturing apparatus 1 has a configuration that does not scrape the molded body material other than necessary portions.
  • the molding material stacked on both sides of the accumulation concave portion 22 is in a state of being insufficient, and accordingly, other than the middle and high portions in the central region of the accumulation concave portion 22.
  • the part is in an excessively piled state.
  • the scuffing roll 42 scrapes off the excess and restacks it on both sides of the accumulation recess 22 in an excessive state, so that the molded material on both sides of the restacked fiber is not scraped off. ing.
  • the re-fabricated molding material since the re-fabricated molding material has little time to be sucked and compressed into the stacking recess 22 after being deposited in the stacking recess 22, it is sucked and compressed into the stacking recess 22 from the stacking region PT.
  • the accumulation recesses 22 restacked in the restacking region RPT.
  • the molded material loaded on both sides is not scraped off by the scuffing roll 42.
  • the absorber with the thick and thin portions of the desired height is more stable without causing fluctuations in the weight (basis weight) of the absorber or overflowing pulp scraped into the restacked fiber area. Can be manufactured automatically.
  • the molded body material is adjusted to a constant height by restacking on both side portions of the stacking concave portion 22 which is located in the upstream in the rotational direction 2.
  • the molding material stacked in the accumulation recess 22 is scraped off by the scuffing roll 42, and the scraped molding material has a height up to the protrusion 422 of the scuffing roll 42, that is, the present material.
  • the height of the outer surface 29a of the ring plate 29 is adjusted.
  • the height (basis weight) can be adjusted to any desired height (basis weight), but in that case, a portion other than the middle / high portion (for example, other than the middle / high portion in the circumferential direction)
  • the height of the part also changes. Therefore, for example, when it is desired to adjust only the height (basis weight) of the mid-high portion, the depth of the mid-high portion recesses may be made deeper or the accumulation recesses other than the mid-high portions may be made shallow.
  • the rotating drum 2 is further rotated.
  • the pile 32 in the accumulation recess 22 comes to a position opposite to the vacuum box 11, it is sucked to the mesh belt 13 by suction from the vacuum box 11, and in this state, the transfer roll 5 And the rotating drum 2 are conveyed to the closest part or the vicinity thereof. Then, the pile 32 in the state of being sucked onto the mesh belt 13 is released from the accumulation recess 22 by suction from the transfer roll 5 side, and transferred onto the transfer roll 5 together with the mesh belt 13.
  • FIG. 10 shows the fiber pile 32 immediately after being released from the concave portion 22 for accumulation according to the present embodiment.
  • a portion corresponding to the middle-high recess 23 (second region) having a deep depth in the central region of the accumulation recess 22 is a thick portion 33 having a high height.
  • a portion (first region) corresponding to the accumulation recess 22 excluding the recess 23 becomes a thin portion 34 having a low height.
  • the thick portion 33 is formed with the height of the space plate 26 disposed on the medium-to-high porous plate 25, the thickness of the concave partition plate 28, and the thickness of the ring plate 29. Yes.
  • the thin portion 34 is formed by the thickness of the concave section plate 28 and the thickness of the ring plate 29 arranged on the porous plate 27.
  • the thick portion 33 is an MD that intersects in a lattice pattern in a region surrounded by the annular defining member 261 of the space plate 26 disposed on the medium-to-high porous plate 25. It is divided by the defining member 262 and the CD defining member 263 (see FIG. 6), and has a divided thick portion 331.
  • the thin portion 34 includes an MD defining member 285 and a CD defining member that intersect in a lattice pattern at the opening defining portion 284 excluding the cross-shaped opening 281 of the recessed partition plate 28 disposed on the porous plate 27. It is divided by a member 286 (see FIG. 6) and has a divided thin portion 341.
  • the adjusting body 20 is not disposed on the inner surface of the medium / high porosity plate 25 disposed in the central region of the accumulation recess 22, and the medium / high porosity plate The adjusting body 20 is disposed on the inner surface of the porous plate 27 disposed in the region of the accumulation recess 22 except 25.
  • a pair of partition plates 41 and 41 intensively supply the molding material in the circumferential direction including the middle-high recess 23 in the accumulation recess 22. Therefore, the thick portion 33 of the pile 32 shown in FIG. 10 obtained using the manufacturing apparatus 1 is a high basis weight portion with a relatively large pile amount of the absorbent material, and is a thin portion.
  • No. 34 is a low basis weight part with a relatively small amount of absorbent material.
  • the entire bottom surface of the piled article 32 is substantially flat by the scuffing roll 42.
  • the pile 32 transferred onto the transfer roll 5 is conveyed while receiving suction from the transfer roll 5 side, and is introduced onto a vacuum conveyor 6 disposed below the transfer roll 5. Moreover, it is delivered onto a core wrap sheet 37 made of tissue paper or a liquid-permeable nonwoven fabric. Thereafter, as shown in FIG. 1, both side portions along the conveying direction of the core wrap sheet 37 are folded back, and the upper and lower surfaces of the piled article 32 are covered with the core wrap sheet 37. And the fiber pile 32 of the state coat
  • the absorbent body 3 obtained by using the manufacturing apparatus 1 shown in FIG. 1 includes a thick part 33 and a thin part 34, and is an absorbent part in which the height of the molded body material that is the raw material of the absorbent part is partially different.
  • the absorbent body 3 obtained using the production apparatus 1 has very little unevenness in piles, and such an absorbent body 3 is suitable as an absorbent body used for absorbent articles such as disposable diapers, sanitary napkins, and incontinence pads. High quality.
  • the absorber provided with the thick part and the thin part of desired height can be manufactured stably.
  • the thick portion 33 has a relatively high basis weight
  • the thin portion 34 has a relatively low basis weight.
  • the manufacturing apparatus 1 described above includes a pair of partition plates 41 and 41 inside the duct 4 as shown in FIG. Moreover, in the manufacturing apparatus 1 mentioned above, as shown in FIG. 1, although it has the drooping board 44 which hangs down from the top
  • the plurality of protrusions 422 constituting the scuffing roll 42 are stacked in a region between the pair of ring plates 29, 29 on the outer peripheral surface of the roll body 421.
  • the position of the protrusion 422 on the outer peripheral surface of the roll body 421 is adjusted from the viewpoint of adjusting the thickness of the obtained absorbent body, etc. You may adjust the area
  • the scuffing guide portion 43 has a rotating drum in a region 421T in which the top portion 431 is disposed in a plurality of projections 422 of the scuffing roll 42 in a plan view as shown in FIG. 2 from the viewpoint of adjusting the thickness of the obtained absorbent body, etc., the position of the scuffing guide portion 43 in the rotation axis direction of the rotary drum 2 is adjusted, and the position of the top portion 431 is adjusted. You may adjust.
  • attraction force is adjusted to the inner surface side of the rotating drum 2 of the porous plate 27 (porous member) except the recessed part 23 for middle / high in the recessed part 22 for accumulation.
  • the adjusting body 20 is disposed, the adjusting body 20 that adjusts the suction force may not be disposed in any region.
  • the piled product 32 manufactured using such a rotating drum 2 is an unevenly piled product having a thick portion 33 having a high height and a thin portion 34 having a low height.
  • the thick portion in the unevenly distributed fiber is a high basis weight portion having a relatively high basis weight, and the thin portion is a low basis weight portion having a relatively low basis weight.
  • the shape of the fiber pile 32 to be manufactured is not limited to the above-described shape, and the suction adjustment plate 24, the medium / high porous plate 25, the space plate 26, the porous plate 27, the concave partition plate 28, and a pair of ring plates 29.
  • the arrangement and shape of the accumulation recesses 22 and the arrangement and shape of the middle / high recesses 23 may be flexibly changed by exchanging them.
  • the middle / high recess 23 forming the second region having a depth deeper than the first region in the middle / high recess 23 may be arranged in a region other than the central region of the accumulation recess 22.
  • the rotating drum 2 uses a plate composed of a suction adjustment plate 24, a medium / high porous plate 25, a space plate 26, a porous plate 27, a recessed section plate 28, and a pair of ring plates 29.
  • the absorbent body produced in the present invention is preferably used as an absorbent body for absorbent articles.
  • the absorbent article is mainly used to absorb and retain body fluids excreted from the body such as urine and menstrual blood.
  • Absorbent articles include, for example, disposable diapers, sanitary napkins, incontinence pads, panty liners, etc., but are not limited to these, and widely include articles used to absorb liquid discharged from the human body. To do.
  • ⁇ 1> An air flow generated by suction from the inside of the rotating drum, the rotating drum having a concave portion for accumulation on the outer peripheral surface, and a duct for supplying the molded material in a scattered state toward the outer peripheral surface of the rotating drum.
  • the absorbent body is manufactured by stacking the molding material in the accumulation recess to produce an absorbent body, wherein the accumulation recess has a first region and a depth greater than that of the first region.
  • a scuffing roll that scrapes off an excessive amount of the molded body material disposed and opposed to the outer peripheral surface of the rotating drum inside the duct, and the rotation from the scuffing roll.
  • a scuffing guide portion that is disposed at a position spaced upstream of the drum rotation direction and separates the molded material in a scattered state scraped off by the scuffing roll in the drum width direction of the rotary drum,
  • the scuffing guide part has an apex that is convex toward the downstream side in the rotational direction of the rotating drum as viewed from above in the normal direction of the outer peripheral surface of the rotating drum.
  • the scuffing guide portion has a width that gradually decreases from the upstream side in the rotational direction of the rotary drum toward the downstream side in the rotational direction when viewed from above in the normal direction of the outer peripheral surface of the rotary drum.
  • the duct is provided with a hanging plate hanging from the top surface of the duct, and the inside of the duct is divided by the hanging plate into a stacked fiber region upstream in the rotational direction and a restacked fiber region downstream in the rotational direction.
  • the said scuffing guide part is a manufacturing apparatus of the absorber as described in said ⁇ 3> currently fixed to the said drooping board.
  • the scuffing roll includes a column-shaped roll body and a plurality of protrusions erected on the outer peripheral surface of the roll body, and the roll body has a plurality of protrusions at a central portion in the rotation axis direction of the roll body.
  • the absorbent body manufacturing apparatus according to any one of ⁇ 1> to ⁇ 4>, wherein the absorbent body has a region disposed and a region where the protrusion is not disposed at both ends of the roll body in the rotation axis direction.
  • the region where the protrusion is arranged is the second region in the accumulation recess in the drum width direction of the rotating drum as viewed from above in the normal direction of the outer peripheral surface of the rotating drum.
  • the region where the protrusion is not disposed is disposed at a position overlapping the first region in the stacking recess in the drum width direction of the rotating drum.
  • Absorber manufacturing equipment ⁇ 7>
  • the top position of the scuffing guide portion as viewed from above from the outside in the normal direction of the outer peripheral surface of the rotating drum, is the position of the region where the plurality of protrusions are arranged in the roll body of the scuffing roll.
  • the manufacturing apparatus for an absorbent body according to ⁇ 5> or ⁇ 6> which matches the central portion in the rotation axis direction.
  • ⁇ 8> A pair of partition plates disposed in both sides along the circumferential direction of the rotating drum at a position spaced apart from the scuffing guide portion upstream in the rotation direction of the rotating drum and inside the duct, A pair of partition plates so that the molded material in a scattered state is excessively stacked so as to overflow from the stacking recesses in a region corresponding to the space between the pair of partition plates in the stacking recesses.
  • the scuffing roll has a cylindrical roll body and a plurality of scraping projections standing on the outer peripheral surface of the roll body, and the protrusions are arranged with a space between each other.
  • the ⁇ 1> is arranged only in a region corresponding to an excessive amount of the molded body material stacked in a corresponding region between the pair of partition plates.
  • absorber manufacturing apparatus according to any one of.
  • the scuffing roll includes a cylindrical roll body, and a plurality of protrusions erected on the outer peripheral surface of the roll body,
  • the height of the protrusion is preferably 1 mm or more and 10 mm or less from the peripheral surface of the roll body, particularly preferably 4 mm or more and 6 mm or less, in the above ⁇ 1> to ⁇ 8>
  • the scuffing guide portion is arranged at a position where the scuffing guide portion and the second region overlap in the drum width direction of the rotary drum as viewed from above in the normal direction of the outer peripheral surface of the rotary drum.
  • the manufacturing apparatus for an absorbent body according to any one of ⁇ 1> to ⁇ 9>.
  • the absorber manufacturing apparatus according to any one of ⁇ 1> to ⁇ 10>, wherein an air injection port is provided at the top.
  • the fiber accumulation area inside the duct is an area where the scattered compact body material is excessively accumulated so as to overflow from the concave portion for accumulation, and the restack fiber area inside the duct is an excess of fiber accumulated In the region where the amount of the molded body material is scraped off by the scuffing roll, and the scraped molded body material is restacked on both sides of the excessively stacked portion of the stacking concave portion using the scuffing guide portion.
  • the absorbent manufacturing apparatus according to any one of ⁇ 1> to ⁇ 11>.
  • the duct includes a hanging plate hanging from the top surface of the duct, and the hanging plate is formed in a convex curved shape from the top surface of the duct toward the upstream side in the circumferential direction of the rotating drum.
  • the manufacturing apparatus for an absorbent body according to any one of ⁇ 1> to ⁇ 12>.
  • ⁇ 14> Inside the duct, a hanging plate hanging from the top surface of the duct, and a position spaced from the scuffing guide portion to the upstream side in the rotation direction of the rotating drum and disposed on both sides along the circumferential direction of the rotating drum.
  • a pair of partition plates, and the pair of partition plates are arranged in a stacking region upstream of the rotation direction inside the duct, which is divided by the hanging plate, ⁇ 1> to ⁇ 13>
  • the scattered dry molded body material scraped with the scuffing roll is rotated by a scuffing guide portion disposed at a position spaced upstream from the scuffing roll in the rotation direction of the rotary drum.
  • the scuffing guide portion has a top portion that is convex toward the downstream side in the rotation direction of the rotating drum as viewed from above in the normal direction of the outer peripheral surface of the rotating drum.
  • the scuffing guide portion has a width that gradually decreases from the upstream side in the rotational direction of the rotary drum toward the downstream side in the rotational direction when viewed from above in the normal direction of the outer peripheral surface of the rotary drum.
  • the duct is provided with a hanging plate hanging from the top surface of the duct, and the inside of the duct is divided by the hanging plate into a stacked fiber region upstream in the rotational direction and a restacked fiber region downstream in the rotational direction.
  • the scuffing roll includes a column-shaped roll body and a plurality of protrusions erected on the outer peripheral surface of the roll body, and the roll body has a plurality of protrusions at a central portion in the rotation axis direction of the roll body.
  • the region where the protrusion is arranged is the second region in the accumulation recess in the drum width direction of the rotating drum as viewed from above in the normal direction of the outer peripheral surface of the rotating drum.
  • the region where the protrusion is not disposed is disposed at a position where the region overlaps the first region in the stacking concave portion in the drum width direction of the rotating drum.
  • Method for manufacturing the absorber is a position of the region where the plurality of protrusions are arranged in the roll body of the scuffing roll.
  • the scuffing roll has a cylindrical roll body and a plurality of scraping projections standing on the outer peripheral surface of the roll body, and the protrusions are arranged with a space between each other. ⁇ 15, which is disposed only in a region corresponding to an excessive amount of the molded material stacked in a region corresponding to the space between the pair of partition plates on the outer peripheral surface of the roll body. Manufacturing method of the absorbent body according to any one of the - ⁇ 19>. ⁇ 24>
  • the scuffing guide portion is arranged at a position where the scuffing guide portion and the second region overlap in the drum width direction of the rotary drum as viewed from above in the normal direction of the outer peripheral surface of the rotary drum.
  • the fiber accumulation area inside the duct is an area where the scattered compact body material is excessively accumulated so as to overflow from the concave portion for accumulation, and the restack fiber area inside the duct is an excess of fiber accumulated In the region where the amount of the molded body material is scraped off by the scuffing roll, and the scraped molded body material is restacked on both sides of the excessively stacked portion of the stacking concave portion using the scuffing guide portion.
  • the duct includes a hanging plate hanging from the top surface of the duct, and the hanging plate is formed in a convex curved shape from the top surface of the duct toward the upstream side in the circumferential direction of the rotating drum.
  • ⁇ 27> Inside the duct, a hanging plate hanging from the top surface of the duct, and a position spaced from the scuffing guide portion to the upstream side in the rotation direction of the rotating drum and disposed on both sides along the circumferential direction of the rotating drum.
  • a pair of partition plates, and the pair of partition plates are arranged in a stacking region upstream in the rotational direction inside the duct, which is divided by the hanging plate, ⁇ 15> to ⁇ 26>

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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)
PCT/JP2017/025978 2016-07-19 2017-07-18 吸収体の製造装置及び吸収体の製造方法 WO2018016490A1 (ja)

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JP2022105905A (ja) * 2021-01-05 2022-07-15 花王株式会社 吸収体の製造方法及び製造装置

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