WO2019069385A1 - 吸収体及び吸収性物品の製造方法並びに吸収体及び吸収性物品の製造装置 - Google Patents

吸収体及び吸収性物品の製造方法並びに吸収体及び吸収性物品の製造装置 Download PDF

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Publication number
WO2019069385A1
WO2019069385A1 PCT/JP2017/036036 JP2017036036W WO2019069385A1 WO 2019069385 A1 WO2019069385 A1 WO 2019069385A1 JP 2017036036 W JP2017036036 W JP 2017036036W WO 2019069385 A1 WO2019069385 A1 WO 2019069385A1
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WO
WIPO (PCT)
Prior art keywords
sheet
absorbent
absorber
manufacturing
cutting
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Application number
PCT/JP2017/036036
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English (en)
French (fr)
Japanese (ja)
Inventor
拓明 原田
松永　竜二
知之 茂木
優喜 加藤
岩佐　博之
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 PCT/JP2017/036036 priority Critical patent/WO2019069385A1/ja
Priority to CN201780090856.4A priority patent/CN110636821B/zh
Priority to JP2019541479A priority patent/JP6591136B2/ja
Priority to TW107134782A priority patent/TW201929803A/zh
Publication of WO2019069385A1 publication Critical patent/WO2019069385A1/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

Definitions

  • the present invention relates to an absorbent and a method for producing an absorbent article comprising the absorbent.
  • the present invention also relates to an absorbent and an apparatus for manufacturing an absorbent article comprising the absorbent.
  • an absorber used for absorbent articles such as a disposable diaper, a sanitary napkin, and an incontinence pad
  • an absorber including, for example, pulp fibers and synthetic fibers is known.
  • a method for producing an absorbent containing pulp fibers and synthetic fibers for example, Patent Document 1 is known.
  • Patent Document 1 describes an absorbent article in which a non-woven fabric having a three-dimensional structure in which fibers are bonded in advance is formed, and then the non-woven fabric is crushed to form non-woven fabric pieces, and the non-woven fabric pieces are mixed with hydrophilic fibers. A method of making the absorber is described. Further, Patent Document 1 describes that a cutter mill method is adopted as a means for grinding a non-woven fabric, and non-woven fabric pieces having an average size of 3 to 25 mm are formed.
  • the present invention comprises a core forming step of accumulating a plurality of sheet pieces containing synthetic fibers to form a continuum of absorbent core, and an adhesive on one surface of a belt-like covering sheet covering the continuum of the absorbent core.
  • a continuous body of the absorbent core formed in the core forming step is disposed on the coating step of the coating and the adhesive-coated surface of the strip-like covering sheet to be conveyed, and the covering sheet is made of absorbent material
  • the adhesive is applied to at least a parting area where the continuum of the absorber is divided by cutting in the absorber forming step.
  • the present invention also relates to a method of manufacturing an absorbent article comprising a liquid-permeable top sheet forming a skin contact surface, a back sheet forming a non-skin contact surface, and an absorbent interposed between these two sheets.
  • the manufacturing method includes a back sheet arranging step of opposingly arranging one surface of the absorber formed by the manufacturing method of the absorber and a band-like liquid-impermeable back sheet conveyed. And a surface sheet disposing step of opposingly arranging the belt-like liquid-permeable surface sheet to be conveyed.
  • the one surface of the portion of the covering sheet to be positioned on the one surface side of the absorber and the portion of the covering sheet to be positioned on the other surface side of the absorber Adhesive is applied only to the part of the covering sheet which is to be located on the side.
  • the present invention provides an adhesive on one surface of a core forming portion forming a continuous body of an absorbent core by accumulating a plurality of sheet pieces containing synthetic fibers and a band-like covering sheet covering the continuous body of the absorbent core.
  • a continuous body of the absorbent core formed in the core forming portion is disposed on the coated portion of the coated portion to be coated and the adhesive coated surface of the strip-like covering sheet to be conveyed, and the covering sheet absorbs the absorption.
  • the adhesive is applied at least to a parting area where the continuous part of the absorber is divided by cutting in the absorber forming part.
  • the present invention also relates to a manufacturing apparatus of an absorbent article comprising a liquid-permeable top sheet forming a skin contact surface, a back sheet forming a non-skin contact surface, and an absorbent interposed between these two sheets.
  • the manufacturing apparatus is a back surface on which the manufacturing apparatus for the absorbent body, one surface of the absorbent body formed by the manufacturing apparatus for the absorbent body, and the strip-like liquid impervious back sheet conveyed are disposed opposite to each other.
  • a sheet placement portion, and a surface sheet placement portion on which the band-like liquid-permeable surface sheet to be conveyed is disposed opposite to the other surface of the absorber.
  • the one of the portion of the covering sheet to be positioned on the one side of the absorber and the portion of the covering sheet to be positioned on the other side of the absorber The adhesive is applied only to the part of the covering sheet which is to be located on the face side.
  • FIG. 1 is a cross-sectional view of a longitudinal central portion of an absorbent according to a preferred embodiment produced by the method for producing an absorbent according to the present invention.
  • FIG. 2 is a cross-sectional view of a longitudinal end of the absorber shown in FIG.
  • FIG. 3 is a schematic perspective view showing a preferred embodiment of a manufacturing apparatus for manufacturing the absorber shown in FIG.
  • FIG. 4 is a schematic side view of the manufacturing apparatus shown in FIG. 3 as viewed from the side.
  • FIG. 5 is an enlarged side view of a supply unit provided in the manufacturing apparatus shown in FIG.
  • FIG. 6 is an explanatory view for explaining a divided region for dividing the continuum of the absorber and a region between the divided regions adjacent in the transport direction.
  • FIG. 1 is a cross-sectional view of a longitudinal central portion of an absorbent according to a preferred embodiment produced by the method for producing an absorbent according to the present invention.
  • FIG. 2 is a cross-sectional view of a longitudinal end of
  • FIG. 7 is a schematic perspective view showing a manufacturing apparatus of another embodiment used in the method of manufacturing an absorber of the present invention.
  • FIG. 8 is an explanatory view for explaining a divided region for dividing the continuum of the absorber and a region between the divided regions adjacent in the transport direction in the manufacturing method using the manufacturing apparatus shown in FIG.
  • the present invention relates to an absorbent body whose constituent members are unlikely to overflow from a cut end and a method of manufacturing an absorbent article including the absorbent body.
  • the present invention also relates to an absorbent body whose constituent members are less likely to overflow from the cut end, and an apparatus for manufacturing an absorbent article including the absorbent body.
  • the production method of the present invention is a production method of an absorbent.
  • the absorbent produced in the present invention is preferably used as an absorbent for an absorbent article.
  • An absorbent article is mainly used to absorb and hold body fluids excreted from the body such as urine and menstrual blood.
  • Absorbent articles include, but are not limited to, for example, disposable diapers, sanitary napkins, incontinence pads, panty liners, etc., and widely include articles used for absorbing fluid discharged from the human body. Do.
  • the absorbent article typically comprises a liquid-permeable top sheet, a liquid-impermeable or water-repellent back sheet, and a liquid-retaining absorbent interposed between the two sheets.
  • the absorber is an absorber formed by the method for producing an absorber of the present invention.
  • FIG. 1 shows a cross-sectional view of a longitudinal central portion of an absorber 100 according to an embodiment manufactured by the method for manufacturing an absorber according to an embodiment of the present invention.
  • Absorbent body 100 contains synthetic fiber 10b.
  • the absorbent body 100 includes a synthetic fiber 10b, and in the embodiment, as shown in FIG. 1, the absorbent core 100a includes not only the synthetic fiber 10b but also the hydrophilic fiber 10a and the absorbent particle 10c.
  • “including the synthetic fiber 10b” means having the sheet piece 10bh containing the synthetic fiber 10b.
  • Absorbent body 100 may be a single layer or a plurality of two or more layers as long as it includes synthetic fiber 10b, but in the embodiment, hydrophilic fiber 10a, synthetic fiber 10b and absorbent particle 10c are dispersed and arranged A single-layer assembly 100a.
  • the absorbent core 100a is a component of the absorber 100, and the absorber 100 is formed by covering the absorbent core 100a with a single covering sheet 100b.
  • the absorbent body 100 has a longitudinally long shape corresponding to the front-rear direction of the wearer when the absorbent article is worn.
  • the absorbent body 100 has an adhesive 502 on the side facing the absorbent core 100 a in the covering sheet 100 b, and the covering sheet 100 b and the absorbent core 100 a are fixed via the adhesive 502.
  • the adhesive 502 as shown in FIG. 1, is absorbed by the covering sheet 100b on the side on which the back sheet is disposed when the absorbent 100 is used for the absorbent article disposed between the top sheet and the back sheet. It is applied to the entire surface of the surface facing the sex core 100a.
  • FIG. 1 A cross-sectional view of the longitudinal end of the absorbent body 100 is shown in FIG.
  • the end of the absorber 100 is a cut end 100e
  • the end of the absorber 100 is a cover sheet 100b on which the back sheet is disposed when the absorber 100 is used for an absorbent article
  • the cover sheet 100 b on the side on which the front sheet is disposed is joined via an adhesive 502. Since the cover sheet 100b on the back sheet side and the cover sheet 100b on the top sheet side are joined in this way, the end of the absorber 100 is sealed, and the end of the absorber 100 is The opening is suppressed, and the constituent members of the absorbent core 100 a are less likely to overflow from the end of the absorber 100.
  • the adhesive 502 various known adhesives conventionally used for absorbent articles and the like can be used.
  • the adhesive 502 may, for example, be a hot melt adhesive.
  • the absorbent core 100a includes a plurality of sheet pieces 10bh (hereinafter, also simply referred to as sheet pieces 10bh) including the synthetic fibers 10b, and each sheet piece 10bh has a substantially rectangular shape.
  • the average length of each sheet piece 10bh is preferably 0.3 mm or more and 30 mm or less, more preferably 1 mm or more and 15 mm or less, and particularly preferably 2 mm or more and 10 mm or less.
  • the average length indicates the average value of the lengths of the sides in the longitudinal direction when each sheet piece 10bh has a rectangular shape.
  • each sheet piece 10bh has a square shape, the average value of the length of any one side of the four sides is shown.
  • the average width of each sheet piece 10bh is preferably 0.1 mm or more and 10 mm or less, more preferably 0.3 mm or more and 6 mm or less, and particularly preferably 0.5 mm or more and 5 mm or less.
  • the average width indicates the average value of the lengths of the sides in the short direction when each sheet piece 10bh has a rectangular shape.
  • each sheet piece 10bh has a square shape
  • the average value of the length of any one side of the four sides is shown.
  • the average width of the sheet piece 10bh is 0.1 mm or more, it is easy to form a sparse structure in the absorber 100, and when it is 10 mm or less, it is difficult for the wearer to feel discomfort due to the absorber 100. It is hard to produce nonuniformity in absorption performance by the position in 100.
  • the various things conventionally used for the absorber for absorbent articles can be used without a restriction
  • the hydrophilic fibers 10a include pulp fibers, rayon fibers, cotton fibers and the like.
  • the synthetic fiber 10 b include short fibers such as polyethylene, polypropylene and polyethylene terephthalate.
  • the sheet piece 10bh is not particularly limited as long as it has a sheet shape, but a non-woven fabric is preferable.
  • the absorbent particle 10c is also included in the constituent members constituting the absorber 100.
  • Examples of the absorbent particles 10c include starch-based, cellulose-based, synthetic polymer-based, and superabsorbent polymer-based ones.
  • As the superabsorbent polymer for example, those comprising starch-acrylic acid (salt) graft copolymer, saponified starch-acrylonitrile copolymer, cross-linked product of sodium carboxymethyl cellulose, acrylic acid (salt) polymer, etc. It can be used.
  • a component which constitutes absorber 100 a deodorizer, an antibacterial agent, etc. can also be used if needed.
  • Examples of the covering sheet 100 b include tissue paper and liquid-permeable nonwoven fabric. From the viewpoint of material cost, it is preferable to use a sheet manufactured based on a wet papermaking method as the covering sheet 100b.
  • FIGS. 3 and 4 show the overall configuration of the manufacturing apparatus 1 of one embodiment used to carry out the manufacturing method of the embodiment. Before describing the method of manufacturing the absorbent body 100, the manufacturing apparatus 1 will be described first.
  • the manufacturing apparatus 1 for manufacturing the absorbent body 100 includes a core forming portion 10A in which a plurality of sheet pieces 10bh are accumulated to form a continuum 100ar of an absorbent core, and an absorbent core.
  • a portion 10C and an absorber forming portion 10D for cutting the continuum 100r of the absorber into individual absorbers 100 are provided.
  • the direction in which the belt-like synthetic fiber sheet 10bs including the synthetic fiber 10b and the absorbent 100 are conveyed is the Y direction, the direction orthogonal to the conveying direction, and the width direction of the synthetic fiber sheet 10bs and the absorbent 100 which are conveyed.
  • the first direction to be described later means the transport direction Y, and means a direction in which the angle formed with the transport direction Y is less than 45 degrees. In the embodiment and other embodiments described later, the first direction coincides with the direction parallel to the transport direction Y.
  • the 2nd direction mentioned later is a direction which intersects with the 1st direction.
  • the second direction is a direction orthogonal to the first direction, and coincides with the direction parallel to the width direction X of the synthetic fiber sheet 10bs to be conveyed and the absorber 100.
  • the core forming unit 10A includes a duct 3 as a transport unit for transporting the raw material of the absorbent core 100a in an air flow and a sheet piece inside the duct 3 from the middle of the duct 3
  • a supply unit 5 for supplying 10bh and a rotary drum 4 disposed adjacent to the downstream side of the duct 3 and having an accumulation unit for accumulating the raw materials of the absorbent core 100a are provided.
  • An accumulation recess 41 which is an example of the accumulation portion, is disposed on the outer peripheral surface 4 f of the rotating drum 4.
  • the core forming portion 10A is a defibrillation portion 2 for defibrillating the hydrophilic sheet 10as including the hydrophilic fiber 10a, and a pressing belt disposed along the outer peripheral surface 4f located on the opposite side of the duct 3 in the rotating drum 4 It is equipped with seven.
  • the defibrating unit 2 includes, as shown in FIG. 3 and FIG. 4, a defibrator 21 that defibrates the hydrophilic sheet 10 as, and a casing 22 that covers the upper side of the defibrator 21.
  • the defibrating unit 2 is a portion that supplies the disintegrated hydrophilic fiber 10 a that is a raw material of the absorber 100 to the inside of the duct 3.
  • the defibrating unit 2 also has a pair of feed rollers 23 and 23 for supplying the hydrophilic sheet 10as to the defibrating machine 21.
  • the duct 3 extends from the defibrating unit 2 to the rotary drum 4, and the opening on the downstream side of the duct 3 is a space A of the rotary drum 4 maintained at a negative pressure. It covers the outer circumferential surface 4f located on
  • the duct 3 has a top plate 31 forming a top surface, a bottom plate 32 forming a bottom surface, and both side walls 33 and 34 forming both side surfaces.
  • the absorber 100 is directed toward the outer peripheral surface 4f of the rotary drum 4. Air flow is made to flow the raw materials of That is, the inside of the duct 3 is a flow passage 30.
  • an absorbent particle scattering pipe 36 for supplying the absorbent particles 10 c into the duct 3 is disposed on the top plate 31 of the duct 3, as shown in FIGS. 2 and 3, an absorbent particle scattering pipe 36 for supplying the absorbent particles 10 c into the duct 3 is disposed.
  • the absorbent particles 10 c are discharged from the dispersion port provided at the tip of the absorbent particle dispersion tube 36 via a device such as a screw feeder (not shown), and supplied to the inside of the duct 3. It is supposed to be The amount of the absorbent particles 10c supplied to the absorbent particle scattering tube 36 can be adjusted by an apparatus such as each screw feeder.
  • the supply unit 5 cuts the belt-like synthetic fiber sheet 10 bs including the synthetic fiber 10 b in a first direction (Y direction) and a second direction (X direction) at a predetermined length. It has cutter blades 51 and 52 which form the sheet piece 10bh. Moreover, the supply part 5 has the suction nozzle 58 which attracts
  • the supply unit 5 includes a first cutter roller 53 having a plurality of cutter blades 51 for cutting in a first direction, and a second cutter roller 54 having a plurality of cutter blades 52 for cutting in a second direction. doing.
  • the supply unit 5 includes one receiving roller 55 disposed to face the first cutter roller 53 and the second cutter roller 54.
  • the entire circumference of the first cutter roller 53 is continuous along the circumferential direction of the first cutter roller 53.
  • a plurality of extending cutter blades 51, 51, 51,... are arranged in the axial direction (X direction) of the first cutter roller 53.
  • the first cutter roller 53 is adapted to rotate in the direction of arrow R3 in response to power from a motor such as a motor. The distance between the cutter blades 51, 51, 51, ...
  • the width of the sheet piece 10bh formed by cutting (the length in the short direction, the length in the X direction) Generally correspond to the More precisely, the synthetic fiber sheet 10bs is cut in a state of being shrunk in the width direction X depending on the tension at the time of sheet conveyance, so that the tension is released in the finished sheet piece 10bh.
  • the width of the sheet piece 10bh may be wider than the interval between the blades 51, 51, 51,.
  • the second cutter roller 54 On the surface of the second cutter roller 54, as shown in FIGS. 3 to 5, a plurality of members extending continuously along the axial direction of the second cutter roller 54 and over the entire width of the second cutter roller 54 The cutter blades 52, 52, 52,... Are spaced in the circumferential direction of the second cutter roller 54.
  • the second cutter roller 54 receives power from a motor such as a motor and rotates in the direction of arrow R4.
  • the receiving roller 55 is a flat roller whose surface is flat as shown in FIG. 3 and FIG.
  • the receiving roller 55 receives power from a motor such as a motor and rotates in the direction of the arrow R5.
  • the supply unit 5 is configured to receive the receiving roller 55 and the first cutter roller 53 from the upstream side to the downstream side in the rotational direction (arrow R5 direction) on the opposing surface of the receiving roller 55.
  • a free roller 56 for introducing a band-shaped synthetic fiber sheet 10bs, a first cutter roller 53 for cutting the band-shaped synthetic fiber sheet 10bs in a first direction, a plurality of cut in a first direction and extending in the first direction
  • a nip roller 57 for introducing between the receiving roller 55 and the second cutter roller 54, and a second cutter roller 54 for cutting the strip continuous sheet piece 10bh1 in the second direction, Have in order.
  • the supply unit 5 has a feed roller (not shown) for conveying the belt-like synthetic fiber sheet 10 bs, and the feed roller is a belt-like composite between the receiving roller 55 and the first cutter roller 53. Introduce the fiber sheet 10bs.
  • the feed roller is configured to be rotated by a drive device such as a servomotor, for example. From the viewpoint of preventing the slip of the synthetic fiber sheet 10bs, the feed roller is not slippery by forming a groove extending in the axial direction in the surface over the entire circumference or applying a coating treatment for improving the frictional force over the entire circumference You may It may be difficult to slip by nipping between the nip roller and the feed roller.
  • the supply unit 5 has a suction nozzle 58 for suctioning the sheet piece 10bh formed by the second cutter roller 54.
  • the suction nozzle 58 has its suction port 581 located below the second cutter roller 54, that is, the rotation direction of the second cutter roller 54 relative to the closest point of contact between the second cutter roller 54 and the receiving roller 55 (arrow R4 Direction) is located downstream. Further, the suction nozzle 58 has its suction port 581 extending over the entire width of the second cutter roller 54.
  • the suction roller 581 of the receiving roller 55 and the second cutter roller 54 is arranged such that the suction port 581 of the suction nozzle 58 faces between the receiving roller 55 and the second cutter roller 54. It is preferable to arrange below. Then, from the viewpoint of further improving the suction performance of the sheet piece 10bh, the suction port 581 of the suction nozzle 58 views the receiving roller 55 and the second cutter roller 54 from the side as shown in FIG. It is preferable to cover the outer surface of the second cutter roller 54 so that the arc length of the suction port 581 facing the second cutter roller 54 is longer than the arc length of the suction port 581 facing the.
  • the suction nozzle 58 is connected to the top plate 31 side of the duct 3 via the supply pipe 59.
  • the sheet piece 10 bh sucked from the suction port 581 of the suction nozzle 58 is supplied to the inside of the duct 3 from the middle of the duct 3 through the supply pipe 59.
  • the connection position between the supply pipe 59 and the duct 3 is located between the defibrating unit 2 side and the rotary drum 4 side in the duct 3, and is located downstream of the absorbent particle scattering pipe 36 in the duct 3. ing.
  • the connection position of the suction pipe 59 and the duct 3 is not limited to this.
  • the connection position between the suction pipe 59 and the duct 3 may not be the top plate 31 side of the duct 3 but the bottom plate 32 side.
  • the rotary drum 4 has a cylindrical shape, and has a member 40 forming the outer peripheral surface 4f, and a fixed drum main body 42 positioned inside the member 40. .
  • the member 40 forming the outer peripheral surface 4f receives power from a motor or the like and rotates about the horizontal axis in the direction of the arrow R1.
  • the member 40 forming the outer peripheral surface 4 f has an accumulation recess 41 as an accumulation portion for accumulating the raw materials of the absorber to obtain an accumulation body.
  • the accumulation recess 41 is continuously disposed all around the circumferential direction (2Y direction) of the rotary drum 4.
  • the bottom surface of the accumulation recess 41 is made of a porous member that functions as a suction hole for sucking the raw material of the absorber 100.
  • the drum body 42 internally has a plurality of mutually independent spaces, and the pressure of each space is adjusted by the drive of an intake fan (not shown) connected to the rotary drum 4.
  • the manufacturing apparatus 1 has three spaces A to C, and the suction force of the region corresponding to the space A can be made stronger or weaker than the suction force of the region corresponding to the spaces B to C.
  • the space A is maintained at a negative pressure.
  • the pressing belt 7 is disposed along the outer peripheral surface 4 f adjacent to the downstream side of the position of the duct 3 and located in the space B of the rotary drum 4.
  • the space B is set to a negative pressure or pressure zero (atmospheric pressure) weaker than the space A of the rotary drum 4.
  • the presser belt 7 is an endless air-permeable or non-air-permeable belt, and is stretched over the rollers 71 and 72 so as to rotate along with the rotation of the rotary drum 4.
  • the pressing belt 7 can hold the stack 100 a in the stacking recess 41 in the stacking recess 41 until the stack 100 a is transferred onto the vacuum conveyor 8.
  • the manufacturing apparatus 1 applies the application portion 10B for applying the adhesive 502 to one surface of the covering sheet 100b in relation to the formation of the highly compressible absorbent body 100 including the sheet piece continuous body 10bh1 including the synthetic fiber.
  • the one side of the covering sheet 100b means the side intended to face the absorbent core 100a in the covering sheet 100b.
  • the application part 10B has the application head 501, as shown to FIG. 3 and FIG.
  • the application head 501 is formed to have a length corresponding to the length in the width direction X of the belt-like covering sheet 100 b in the width direction X.
  • the coating head 501 formed in this manner is disposed above the band-shaped covering sheet 100b to be conveyed at an interval.
  • a contact type or non-contact type may be used, and a die coater, a spiral spray, an omega nozzle, a curtain spray, a beat nozzle, a roll coater, a gravure coater, a screen roll coater or the like can be used.
  • the continuum 100ar of the absorbent core is disposed on the application surface of the adhesive 502 of the band-like covering sheet 100b to be conveyed, and at least a part of the continuum 100ar of the absorbent core is disposed by the covering sheet 100b.
  • the covering portion 10 ⁇ / b> C includes a vacuum conveyor 8 and a folding guide plate 201 disposed above the vacuum conveyor 8.
  • the vacuum conveyor 8 is disposed below the rotary drum 4 as shown in FIGS. 3 and 4 and is located in a space C set to a weak positive pressure or zero pressure (atmospheric pressure) of the rotary drum 4.
  • the vacuum conveyor 8 is opposed to an endless air-permeable belt 83 stretched over the drive roller 81 and the driven rollers 82 and 82 and an outer peripheral surface 4 f located in the space C of the rotary drum 4 with the air-permeable belt 83 interposed therebetween. And a vacuum box 84 arranged at a position.
  • the cover sheet 100 b is introduced onto the vacuum conveyor 8.
  • the folding guide plate 201 is a member that folds back both sides bR and bL along the transport direction of the cover sheet 100b transported by the vacuum conveyor 8 in the width direction.
  • the manufacturing apparatus 1 includes the absorber formation portion 10D on the downstream side of the folding guide plate 201.
  • the cutting method with compression to thickness direction Z is used for the continuous body 100r of an absorber in the site
  • a cutting method a method using a rotary die cutter, a method using a blade cutter, etc. may be mentioned.
  • the cutting accompanied by the compression in the thickness direction Z means that the continuum 100r of the absorber is compressed in the thickness direction Z, and the continuum 100r of the absorber is cut under the compressed state at the compression point.
  • the absorber forming part 10D has a rotary die cutter, and as the rotary die cutter, as shown in FIGS. 3 and 4, a cutter roller 62 provided with a pair of cutting blades 61, 61 on the circumferential surface and the cutting blade An anvil roller 63 having a smooth peripheral surface for receiving 61 and 61 is provided.
  • the pair of cutting blades 61, 61 have a curved shape that is convex in the circumferential direction of the cutter roller 62, and are disposed on the circumferential surface of the cutter roller 62 such that the apexes of the convexs face each other. ing.
  • Absorbent body 100 can be used for absorbent articles, such as a disposable diaper and a sanitary napkin.
  • the apparatus for manufacturing an absorbent article according to the present invention includes a back sheet arrangement portion in which the above-described manufacturing apparatus 1 and a strip-like liquid-impervious back sheet transported are opposed to one side of the transported absorbent 100. And a surface sheet arrangement portion for opposingly arranging the other surface of the absorbent body 100 to be conveyed and the strip-like liquid permeable surface sheet to be conveyed.
  • application section 10B one of the portion of coating sheet 100b scheduled to be positioned on one surface side of absorber 100 and the portion of coating sheet 100b scheduled to be positioned on the other surface side of absorber 100.
  • the adhesive is applied only to the portion of the covering sheet 100b which is to be positioned on the surface side.
  • the absorbent body manufacturing method of the embodiment comprises a fibrillation step of fibrillating the strip-like hydrophilic sheet 10as using the fibrillation machine 21 to obtain the hydrophilic fiber 10a, and a strip-like synthesis including the synthetic fiber 10b.
  • a plurality of sheet pieces 10bh and hydrophilic fibers 10a are accumulated in the accumulation recess 41 which is an accumulation portion, and the core forming step of forming the absorbent core 100a is provided.
  • the manufacturing method of absorber 100 of an embodiment is explained in full detail.
  • an intake fan (not shown) connected to each of the space A in the rotating drum 4 and the inside of the vacuum box 84 for the vacuum conveyor 8 is operated to a negative pressure.
  • a negative pressure By making the space A negative pressure, an air flow for conveying the raw material of the absorber 100 to the outer peripheral surface 4 f of the rotating drum 4 is generated in the duct 3.
  • the defibrator 21 and the rotary drum 4 are rotated, and the first cutter roller 53, the second cutter roller 54 and the receiving roller 55 are rotated, and the pressing belt 7 and the vacuum conveyor 8 are operated.
  • the hydrophilic fiber 10 a which is a disintegrated fiber material, is supplied from the disintegration device 21 to the duct 3.
  • the pair of feed rollers 23, 23 is configured to control the supply speed of the hydrophilic sheet 10as to the fibrillating machine 21.
  • the supply of the hydrophilic sheet 10 as to the disintegration device 21 is performed in a controlled manner.
  • a cutting step is performed to cut the strip-like synthetic fiber sheet 10bs in a second direction crossing the first direction and the first direction at a predetermined length to form a plurality of sheet pieces 10bh.
  • the first cutter roller 53 provided with the cutter blade 51 for cutting the band-like fiber sheet 10bs in the first direction and the second direction are cut.
  • a cutting process is performed to form a sheet piece 10bh by cutting using a second cutter roller 54 provided with a cutter blade 52.
  • the belt-like fiber sheet 10bs is introduced between the first cutter roller 53 and the receiving roller 55 using one receiving roller 55 disposed opposite to the cutter roller 54, and cut in the first direction to cut the belt
  • the sheet strip continuum 10bh1 is formed, and the formed strip strip continuum 10bh1 is conveyed by the receiving roller 55 and cut in the second direction between the second cutter roller 54 and the receiving roller 55 to cut the sheet Form 10 bh.
  • the cutting step will be specifically described.
  • the belt-like fiber sheet 10bs is conveyed using the above-described feed roller (not shown).
  • the feed roller is configured to control the transport speed of the belt-like fiber sheet 10bs.
  • the transport speed of the band-like fiber sheet 10bs is controlled and carried out.
  • the belt-like fiber sheet 10bs conveyed by the feed roller is received by the receiving roller 55, which is a flat roller that rotates in the direction of arrow R5 via the free roller 56, and the direction of arrow R3.
  • the plurality of cutter blades 51, 51, 51,... The band-like fiber sheet 10bs at a position spaced in the second direction. Cut in one direction.
  • a plurality of strip-shaped continuous sheet pieces 10bh1 extending in the first direction juxtaposed in the second direction are formed.
  • the plurality of cutter blades 51, 51, 51,... Are arranged on the surface of the first cutter roller 53 at equal intervals in the second direction.
  • the fiber sheet 10bs is cut at equal intervals, a plurality of strip-shaped continuous sheet pieces 10bh1 having the same width (length in the second direction) are formed.
  • the average width of the continuous sheet piece 10bh1 formed in the cutting step is preferably 0.1 mm or more and 10 mm or less from the viewpoint of securing the dimensions necessary for the sheet piece to exhibit a predetermined effect, etc. .3 mm or more and 6 mm or less is more preferable, and 0.5 mm or more and 5 mm or less is particularly preferable.
  • the width of the continuous sheet piece 10bh1 cut by the first cutter roller 53 corresponds to the length of the short side of the finally formed sheet piece 10bh.
  • the width of the continuous sheet piece 10bh1 cut by the first cutter roller 53 may be cut so as to correspond to the length of the longitudinal side of the finally formed sheet piece 10bh.
  • the average width of the continuous sheet piece 10bh1 cut by the first cutter roller 53 is preferably 0.3 mm or more and 30 mm or less, more preferably 1 mm or more and 15 mm or less, and 2 mm or more It is particularly preferable that the diameter is 10 mm or less.
  • the plurality of strip-shaped continuous sheet pieces 10bh1 formed are conveyed on the circumferential surface of the receiving roller 55 rotating in the direction of the arrow R5, conveyed between the receiving roller 55 and the nip roller 57, and through the nip roller 57. It is introduced between the receiving roller 55 and the second cutter roller 54.
  • a second roller disposed in the second direction is disposed between the receiving roller 55 rotating in the direction of arrow R5 and the second cutter roller 54 rotating in the direction of arrow R4.
  • a plurality of strip-shaped continuous sheet pieces 10bh1 extending in one direction are introduced, and the plurality of strip-shaped continuous sheet pieces 10bh1 are intermittently transmitted in the first direction by the plurality of cutter blades 52, 52, 52,.
  • Cutting in the second direction By cutting in this manner, a plurality of rectangular sheet pieces 10bh whose length in the first direction is longer than the length in the second direction are formed.
  • the average length of the sheet pieces 10bh formed in the cutting step is preferably 0.3 mm or more and 30 mm or less from the viewpoint of securing dimensions necessary for the sheet pieces 10bh to exhibit a predetermined effect, and is 1 mm.
  • the diameter is more preferably 15 mm or less, and particularly preferably 2 mm to 10 mm.
  • the length of the sheet piece 10bh cut by the second cutter roller 54 corresponds to the length of the side in the longitudinal direction of the sheet piece 10bh.
  • the length of the sheet piece 10bh cut by the second cutter roller 54 may be cut so as to correspond to the length of the side of the sheet piece 10bh in the short direction.
  • the length (width) of the sheet piece 10bh cut by the cutter roller 54 is preferably 0.1 mm or more and 10 mm or less, more preferably 0.3 mm or more and 6 mm or less, and more preferably 0.5 mm or more and 5 mm It is particularly preferred that
  • the band-like synthetic fiber sheet 10bs is cut in the first direction and cut in the second direction with a predetermined length cut to obtain the sheet piece 10bh, so the size of the sheet piece 10bh obtained It is easy to adjust to the intended size, and to manufacture a large number of sheet pieces 10bh of the same size with high accuracy. As described above, since the sheet piece 10bh of the intended size can be formed with high accuracy, it is possible to efficiently and continuously manufacture an absorbent body having a target absorption performance.
  • the suction nozzle 58 having the suction port 581 disposed below the second cutter roller 54 the sheet piece 10bh obtained by cutting with the cutter rollers 53 and 54 is suctioned and supplied to the inside of the duct 3. Perform a suction process.
  • the suction nozzle is located below the second cutter roller 54, that is, on the downstream side of the second cutter roller 54 in the rotational direction (arrow R4 direction) of the closest point of contact between the second cutter roller 54 and the receiving roller 55.
  • the sheet piece 10bh suctioned in the suction step is carried on the air flow, and carried to the stacking recess 41 on the outer peripheral surface 4f of the rotary drum 4.
  • the plurality of sheet pieces 10bh are supplied from the top plate 31 side of the duct 3 to the inside of the duct 3 at a position midway in the transport direction Y of the duct 3 and supplied.
  • the sheet piece 10bh is put on the air flow and conveyed to the accumulation recess 41 of the rotary drum 4 in a scattered state.
  • the hydrophilic fibers 10a previously obtained in the defibration step are supplied into the duct 3, and the plurality of sheet pieces 10bh sucked in the suction step are supplied into the duct 3 from the middle of the duct 3. It is done. Therefore, the sheet piece 10bh is conveyed by being carried in the air flow while the hydrophilic fiber 10a is carried in the air flow and is being conveyed to the accumulation recess 41 in the scattering state, so that the sheet piece 10bh and the hydrophilic The sheet piece 10bh and the hydrophilic fiber 10a are mixed while conveying the elastic fiber 10a in an air flow and in a scattering state.
  • the absorbent particles 10c are supplied using the absorbent particle scattering tube 36, and the sheet piece 10bh and the absorbent particles 10c obtained in the cutting step are placed on the air stream to form the concave portions 41 for accumulation.
  • the sheet piece 10bh and the absorbent particle 10c are mixed while being transported to the In the transport step, since the position of the absorbent particle scattering tube 36 is located on the upstream side of the connection position of the suction tube 59 and the duct 3, the absorbent particles 10 c are carried on the air flow to form the concave portion 41 for accumulation.
  • the sheet piece 10bh, the hydrophilic fiber 10a and the absorbent particle 10c are mixed while being transported in the scattering state.
  • the sheet pieces 10bh formed in the cutting step and conveyed in the conveying step are accumulated in the accumulation recess 41 disposed on the outer peripheral surface 4f of the rotary drum 4 to form a continuous body 100ar of the absorbent core Perform the process.
  • the sheet piece 10bh not only the sheet piece 10bh but also the hydrophilic fibers 10a and the absorbent particles 10c are accumulated in the accumulation recess 41 to form the absorbent core 100a.
  • the sheet piece 10bh, the hydrophilic fiber 10a and the absorbent particle 10c are accumulated in a dispersed state in the thickness direction in the thickness direction.
  • a continuum 100ar of raw material absorbent core is formed.
  • the continuum 100ar of the absorbent core formed in the accumulation recess 41 is continuously manufactured over the entire circumference of the rotary drum 4 in the circumferential direction 2Y.
  • the rotary drum 4 is further rotated to rotate it.
  • the absorbent core continuous body 100ar in the accumulation recess 41 is conveyed onto the vacuum conveyor 8 while being held down by the pressing belt 7 disposed on the outer peripheral surface 4f located in the space B of the drum 4.
  • the present manufacturing method has a coating step separately from the core forming step.
  • the adhesive 502 is applied by the application head 501 of the application section 10B to one surface of the belt-like covering sheet 100b covering the continuum 100ar of the absorbent core formed in the core forming step. Perform the coating process.
  • the one side of the covering sheet 100b means the side intended to face the absorbent core 100a in the covering sheet 100b.
  • the adhesive 502 is applied at least to the divided region BT where the continuous body 100r of the absorber is divided by cutting in the absorber formation step described later.
  • the adhesive 502 is applied only to the central portion bC in the width direction X of the covering sheet 100b by the application head 501, and the adhesive 502 is not applied to the side portions bL and bR in the width direction X.
  • the absorbent body 100 may be used for an absorbent article having a surface sheet forming a skin contact surface, a back sheet forming a non-skin contact surface, and an absorber interposed between both sheets. it can.
  • a back sheet arrangement in which one surface of the absorbent body 100 divided in the absorbent body forming step described later and the belt-like liquid-impervious back surface sheet transported are opposed to each other.
  • the adhesive 502 is applied to the portion of the cover sheet 100b on the side on which the back sheet is oppositely disposed in the back sheet disposing step and the surface facing the absorbent core 100a.
  • the adhesive 502 is applied only to the central portion bC in the width direction X of the covering sheet 100b, which is the portion of the covering sheet 100b to be positioned on the one side of the side where the back sheet is disposed opposite to the other side.
  • the coating amount of the adhesive 502 in the dividing region BT is higher than the coating amount of the adhesive 502 in the region AT between the dividing regions BT and BT in the conveyance direction Y of the continuous body 100r of the absorber.
  • the adhesive 502 may or may not be applied to the region AT between the divided regions, but the adhesive 502 may not be applied to the region AT. preferable.
  • the opening of the cut end portion 100e of the absorber 100 can be efficiently made. It can be suppressed. As shown in FIG. 6 and FIG.
  • the divided region BT where the continuous body 100 r of the absorber is divided by cutting is a cutting blade 61 of the continuous body 100 r of the absorber (a cutting blade in the manufacturing apparatus 1 shown in FIG. 61B) and when it is divided into one absorber 100 and the absorber 100 adjacent on the upstream side in the transport direction Y of the one absorber 100, the one absorber 100 on the upstream side in the transport direction Y It means a region including at least a region between the cutting end 100e and the cutting end 100e on the downstream side in the conveyance direction Y of the adjacent absorbers 100.
  • the application amount of the adhesive 502 in the divided region BT is preferably 1 g / m 2 or more and 50 g / m 2 or less, from the viewpoint of efficiently suppressing the opening of the cut end portion 100 e of the absorber 100, and 5 g / m 2 and still more preferably m is 2 or more 20 g / m 2 or less.
  • the continuous core 100ar of the absorbent core formed in the core forming step is disposed on the application surface of the adhesive 502 of the conveyed band-like covering sheet 100b to which the adhesive 502 is applied, and the covering sheet 100b is used to form the continuous sheet 100b.
  • a coating step of coating the absorbent core 100a to form a continuous body 100r of the absorbent is performed. In the coating step, when the continuum 100ar of the absorbent core formed in the core forming step comes to the opposing position of the vacuum box 84 located in the space C of the rotary drum 4 as shown in FIGS.
  • one side bR of the covering sheet 100b is cut to one side edge of the continuous body 100ar of absorbent core Starting from aR1, it is folded back so as to contact the surface of the continuum 100ar of the absorbent core, and covers one side aR of the continuum 100ar of the absorbent core.
  • the other side bL of the covering sheet 100b contacts the surface of the absorbent core continuum 100ar starting from the other side edge aL1 of the absorbent core continuum 100ar. As it is folded, it covers the other side aL of the continuum 100ar of absorbent core.
  • the two side parts bR and bL along the conveyance direction Y of the covering sheet 100b are compared with the two side parts aR and aL along the conveyance direction Y of the continuous absorbent core continuum 100ar arranged. It is folded back so as to cover, and the side edges of the side portions bR and bL are overlapped to cover the entire continuous body 100ar of the absorbent core with a single covering sheet 100b to produce a continuous belt 100r of absorbent. .
  • the continuous body 100r of the absorbent manufactured in the coating step is conveyed between the cutter roller 62 and the anvil roller 63 of the absorbent body forming portion 10D,
  • An absorber forming step is performed in which the material is cut by a cutting method involving compression and divided into individual absorbers 100.
  • the cutter roller 62 used in the absorber formation step is provided with a pair of cutting blades 61, 61 on the circumferential surface.
  • the pair of cutting blades 61, 61 are convexly curved so as to face each other. Therefore, as shown in FIGS.
  • the cutting end 100e on the downstream side in the transport direction Y is curved so as to be convex toward the downstream side in the transport direction Y.
  • the cutting end 100e on the upstream side in the transport direction Y is convexly curved toward the upstream side in the transport direction Y.
  • the adhesive 502 is applied to the parting area BT where the continuum 100r of the absorber is divided by cutting, in other words, to the surface to be opposed to the absorbent core 100a of the covering sheet 100b.
  • the thickness direction Z in which the absorbent core 100a is covered at the cut end 100e of the absorber 100 The upper and lower covering sheets 100 b are easily fixed via the adhesive 502. As described above, when the coated sheets 100b are fixed to each other through the adhesive 502 at the cut end 100e of the absorber 100, the absorber 100 including the sheet piece continuum 10bh1 including synthetic fibers has high compression recovery. Even if it does, the cut end 100e of the absorbent body 100 is difficult to open, and it is possible to suppress that the constituent members of the absorbent core 100a overflow from the cut end 100e. Moreover, the absorbent article provided with such an absorber 100 improves a feeling of use.
  • the application amount of the adhesive 502 has a distribution along the width direction X as the application pattern in plan view of the adhesive 502 in the application step.
  • the sheet pieces 10bh larger than the hydrophilic fibers 10a are dispersed and accumulated in the longitudinal direction and the width direction, which are one direction of the accumulated body 100a ′. There may be a large gap between the pieces 10bh.
  • the adhesive 502 has a distribution in the amount of the adhesive 502 applied along the width direction X.
  • the adhesive 502 at the position where the amount of application is large moves into the large gap between the sheet pieces 10bh by compression in the thickness direction Z and enters the gap between the sheet pieces 10bh.
  • the covering sheets 100b at the upper and lower sides in the thickness direction Z are fixed to each other, so that the cut end portion 100e of the absorber 100 can be effectively suppressed.
  • Examples of the coating pattern having a distribution in the amount of application of the adhesive 502 along the width direction X include linear (serpentine), dot, omega, spiral and the like.
  • FIG. 7 shows the entire configuration of a manufacturing apparatus 1 of another embodiment.
  • a different point from the manufacturing apparatus 1 shown in FIG. 3 is demonstrated, and description is abbreviate
  • the cutter roller 62 of the absorber forming portion 10D is provided with cutting blades 61B on its circumferential surface, and a plurality of cutting blades 61B are provided at equal intervals in the rotation direction of the cutter roller 62. .
  • Each cutting blade 61B has a linear shape extending in the width direction X.
  • the manufacturing method of the absorber using the manufacturing apparatus 1 shown in FIG. 7 a point different from the manufacturing method of the absorber using the manufacturing apparatus 1 shown in FIG. 3 is demonstrated, and description is abbreviate
  • the manufacturing method using the manufacturing apparatus 1 shown in FIG. 7 as shown in FIGS. 7 and 8, in the absorbent body forming step, the continuous body 100r of the absorbent body is cut in a straight line by the cutting blade 61B. Therefore, the absorber 100 manufactured by the manufacturing method using the manufacturing apparatus 1 shown in FIG. 7 has a shape in which the cut end portions 100 e linearly extend in the width direction X.
  • the adhesive 502 is applied to the dividing region BT where the continuous body 100 r of the absorber is cut by cutting as in the manufacturing method using the manufacturing apparatus 1 shown in FIG. There is. Therefore, when the continuous body 100r of the absorber is cut by the cutting blade 61B with compression in the thickness direction Z in the absorber forming step, the covering sheets 100b above and below in the thickness direction Z at the cut end 100e of the absorber 100 The two are easily fixed via the adhesive 502. Thus, when the covering sheets 100b are fixed to each other at the cut end 100e of the absorber 100 through the adhesive 502, the cut end 100e of the absorber 100 does not easily open, and the constituent members of the absorbent core 100a are It is possible to suppress overflow from the cut end portion 100e.
  • the present invention is not limited to the above embodiment, and can be appropriately modified.
  • the adhesive 502 is applied only to the central portion bC in the width direction X of the covering sheet 100b in the applying step.
  • the adhesive 502 may be applied not only to the central portion bC but also to the entire area of the facing surface of the covering sheet 100b facing the absorbent core 100a.
  • the adhesive 502 is disposed on the upper and lower surfaces in the thickness direction Z of the absorbent core 100a when the entire circumference of the absorbent core 100a is covered with the single covering sheet 100b.
  • the covering sheets 100b at the upper and lower sides in the thickness direction Z covering the absorbent core 100 at the cut end 100e of the absorber 100 can be further easily fixed via the adhesive 502.
  • one surface and the other surface of the absorbent core 100a are covered with a single covering sheet 100b to form a continuous body 100r of the absorbent, but It may be a total of two covering sheets 100b, one covering sheet 100b covering one side of the sex core 100a and one covering sheet 100b covering the other side of the absorbent core 100a.
  • the absorbency of at least one of the two covering sheets 100b and 100b in the coating step The adhesive 502 may be applied to the surface to be opposed to the core 100a, and the adhesive 502 may be applied to the two covering sheets 100b.
  • the sheet piece 10bh manufactured beforehand may be used, and the sheet piece 10bh manufactured by methods other than a cutter blade may be used.
  • a first cutter roller 53 having a cutter blade 51 for cutting in a first direction and a cutter blade 52 for cutting in a second direction are provided.
  • the belt-like synthetic fiber sheet 10 bs is formed in the first direction by using the two cutter rollers 54 and the one receiving roller 55 disposed to face the first cutter roller 53 and the second cutter roller 54.
  • the sheet piece 10bh is manufactured by cutting a predetermined length in the second direction.
  • one cutter roller provided with a plurality of cutter blades 51 for cutting in the first direction and a plurality of cutter blades 52 for cutting in the second direction, and one receiving roller disposed opposite to the cutter roller
  • the synthetic fiber sheet 10bs may be cut to produce a sheet piece 10bh.
  • the synthetic fiber sheet 10bs may be cut using different receiving rollers disposed opposite to the first cutter roller 53 and the second cutter roller 54 to manufacture the sheet piece 10bh.
  • a first cutter roller 53 having a plurality of cutter blades 51 arranged at equal intervals and a plurality of cutters arranged at equal intervals
  • the synthetic fiber sheet 10bs is cut using the second cutter roller 54 provided with the blade 52 to produce sheet pieces 10bh of the same size, but a plurality of cutter blades so as to have two or more types of intervals 51 is used to cut the synthetic fiber sheet 10 bs by using the first cutter roller 53 provided with 51 or the second cutter roller 54 provided with a plurality of cutter blades 52 so as to have two or more kinds of intervals. May be manufactured.
  • sheet pieces 10bh of two or more types of sizes can be formed, but unlike the manufacture using a cutter mill method, sheet pieces 10bh of the intended size can be formed with high accuracy.
  • absorbents with targeted absorption performance can be produced efficiently and continuously.
  • the synthetic fiber sheet 10bs is cut using a first cutter roller 53 provided with a cutter blade 51 for cutting in a first direction to form a strip.
  • the strip continuous sheet piece continuous body 10bh1 is cut using the second cutter roller 54 provided with the cutter blade 52 for forming the piece continuous body 10bh1 and then cutting in the second direction, and the rectangular sheet piece 10bh It is manufactured but may be reversed.
  • the synthetic fiber sheet 10bs is cut using the second cutter roller 54 provided with the cutter blade 52 that cuts in the second direction to form a strip-shaped continuous sheet piece 10bh1 extending in the second direction, and then
  • the strip-like continuous sheet piece 10bh1 may be cut using the first cutter roller 53 provided with the cutter blade 51 that cuts in the first direction to manufacture the rectangular sheet piece 10bh.
  • the synthetic fiber sheet 10bs is cut using the first cutter roller 53 and the second cutter roller 54 to manufacture a sheet piece 10bh.
  • the synthetic fiber sheet 10bs is cut using a press equipped with the cutter blade 51 that cuts in the first direction without using a cutter roller and a press equipped with the cutter blade 52 that cuts in the second direction.
  • the sheet piece 10bh may be manufactured.
  • the fibrillation process of obtaining the hydrophilic fiber 10a is provided by disintegrating the strip
  • the absorbent particles 10c are supplied using the absorbent particle scattering tube 36, but the absorbent particles 10c may not be supplied.
  • the continuous body of the absorbent core formed in the core forming step is disposed on the adhesive coated surface of the band-like covering sheet to be conveyed, and the continuous sheet of the absorbent core is disposed with the covering sheet.
  • forming an absorbent continuous body, and forming the absorbent continuous body by cutting the continuous body of the absorbent according to a cutting method involving compression in the thickness direction and dividing the continuous body into individual absorbents.
  • a method of manufacturing an absorber wherein in the applying step, at least the adhesive is applied to a dividing region where the continuous body of the absorber is cut by cutting in the absorber forming step.
  • the application step the method for producing an absorber according to ⁇ 1>, wherein the adhesive is applied so as to have a distribution in the amount of application of the adhesive along the width direction of the band-like covering sheet.
  • the applied amount of the adhesive in the divided region is larger than the applied amount of the adhesive in a region between the divided regions in the conveyance direction of the continuous body of the absorber.
  • ⁇ 4> In the application step, the method for manufacturing an absorber according to ⁇ 3>, wherein the adhesive is not applied to the region between the divided regions in the conveyance direction of the continuous body of the absorber.
  • the covering step one covering sheet is used, and both side parts along the conveyance direction of the covering sheet are folded back so as to cover the both sides along the conveyance direction of the continuum of the absorbent core disposed.
  • the method for producing an absorber according to any one of ⁇ 1> to ⁇ 5> wherein the continuous body of the absorber is cut using a rotary die cutter.
  • the application amount of the adhesive in the divided region is preferably 1 g / m 2 or more and 50 g / m 2 or less, and more preferably 5 g / m 2 or more and 20 g / m 2 or less.
  • a cutting step of forming a plurality of sheet pieces by cutting a belt-like synthetic fiber sheet containing the synthetic fibers in a first direction and a second direction intersecting the first direction to form a plurality of sheet pieces In the forming step, the method of manufacturing an absorbent according to any one of ⁇ 1> to ⁇ 8>, wherein the plurality of sheet pieces formed in the cutting step are accumulated to form the absorbent core.
  • the belt-like synthetic fiber sheet is cut using a first cutter roller provided with a cutter blade for cutting in the first direction to form a strip-like continuous sheet piece, and the second The manufacturing method of the absorber as described in said ⁇ 9> which cut
  • the sheet-like synthetic fiber sheet is cut by using a single cutter roller provided with a cutter blade for cutting in the first direction and a cutter blade for cutting in the second direction. The manufacturing method of the absorber as described in said ⁇ 9> which forms a piece.
  • ⁇ 12> Any of the above ⁇ 9> to ⁇ 11>, wherein the first direction is a direction in which the band-like synthetic fiber sheet is conveyed in the cutting step, and the second direction is a direction orthogonal to the first direction.
  • the average length of each of the sheet pieces formed in the cutting step is preferably 0.3 mm or more and 30 mm or less, more preferably 1 mm or more and 15 mm or less, and particularly preferably 2 mm or more and 10 mm or less.
  • the average width of each of the sheet pieces formed in the cutting step is preferably 0.1 mm or more and 10 mm or less, more preferably 0.3 mm or more and 6 mm or less, and 0.5 mm or more and 5 mm or less
  • the method for producing an absorbent according to any one of the above ⁇ 9> to ⁇ 13>, wherein ⁇ 15> A method of manufacturing an absorbent article comprising a liquid-permeable top sheet forming a skin contact surface, a back sheet forming a non-skin contact surface, and an absorbent interposed between the two sheets, The back surface sheet which carries out opposing arrangement
  • a surface sheet disposing step of opposingly disposing a band-like liquid-permeable surface sheet to be conveyed and the application step includes the one surface of the absorber.
  • the portion of the covering sheet to be positioned on the side and the portion of the covering sheet to be positioned on the other side of the absorber only on the portion of the covering sheet to be positioned on the one side Method for producing an absorbent article, wherein the adhesive is applied .
  • An application part which applies an adhesive agent to a core formation part which accumulates a plurality of sheet pieces containing synthetic fiber, and forms a continuum of an absorptive core, and one side of a beltlike covering sheet which covers a continuum of the absorptive core And a continuous body of the absorbent core formed by the core forming portion is disposed on the adhesive coated surface of the band-like covering sheet to be conveyed, and the continuous sheet of the absorbent core is disposed with the covering sheet. And forming an absorbent continuum, the absorbent continuum being cut into individual absorbent bodies by cutting using a cutting method involving compression in the thickness direction.
  • An apparatus for manufacturing an absorber wherein the adhesive is applied to at least a parting area where the continuous part of the absorber is divided by cutting at the absorber forming part in the application part.
  • the manufacturing apparatus of the absorber as described in said ⁇ 16> which applies the said adhesive agent so that it may have distribution in the application amount of the said adhesive agent along the width direction in the said strip
  • the application amount of the adhesive in the dividing area is larger than the application amount of the adhesive in the area between the dividing areas in the transport direction.
  • ⁇ 21> The apparatus for producing an absorber according to any one of ⁇ 16> to ⁇ 20>, wherein the absorber forming unit includes a rotary die cutter.
  • the application amount of the adhesive in the divided region is preferably 1 g / m 2 or more and 50 g / m 2 or less, and more preferably 5 g / m 2 or more and 20 g / m 2 or less.
  • the manufacturing apparatus of the absorber any one of ⁇ 22>.
  • the core forming unit includes a transport unit configured to transport the raw material of the absorbent core, an accumulation unit disposed downstream of the transport unit in the transport direction and accumulating the raw materials of the absorbent core, and the transport unit. And a feeding unit for feeding the sheet piece, wherein the feeding unit cuts a belt-like synthetic fiber sheet containing synthetic fibers in a first direction and a second direction intersecting the first direction at a predetermined length.
  • the supply unit includes a first cutter roller provided with a cutter blade for cutting in the first direction, and a second cutter roller provided with a cutter blade for cutting in the second direction.
  • 24 The manufacturing apparatus of the absorber as described in 24>.
  • ⁇ 26> The production of the absorber according to ⁇ 24>, wherein the supply unit includes a cutter roller including a plurality of cutter blades that cut in the first direction and a plurality of cutter blades that cut in the second direction. apparatus.
  • the average length of each of the sheet pieces formed using the cutter blade is preferably 0.3 mm or more and 30 mm or less, more preferably 1 mm or more and 15 mm or less, and 2 mm or more and 10 mm or less.
  • the average width of each of the sheet pieces formed using the cutter blade is preferably 0.1 mm or more and 10 mm or less, more preferably 0.3 mm or more and 6 mm or less, and 0.5 mm or more and 5 mm or less.
  • An apparatus for manufacturing an absorbent article comprising a liquid-permeable top sheet forming a skin contact surface, a back sheet forming a non-skin contact surface, and an absorbent interposed between the two sheets,
  • the manufacturing apparatus of the absorber as described in any one of 16>- ⁇ 29>, one side of the said absorber formed with the manufacturing apparatus of the said absorber, and the strip
  • the adhesive is applied only to the portion of the covering sheet scheduled To manufacture apparatus of the absorbent article.

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PCT/JP2017/036036 2017-10-03 2017-10-03 吸収体及び吸収性物品の製造方法並びに吸収体及び吸収性物品の製造装置 WO2019069385A1 (ja)

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CN201780090856.4A CN110636821B (zh) 2017-10-03 2017-10-03 吸收体和吸收性物品的制造方法、以及吸收体和吸收性物品的制造装置
JP2019541479A JP6591136B2 (ja) 2017-10-03 2017-10-03 吸収体及び吸収性物品の製造方法並びに吸収体及び吸収性物品の製造装置
TW107134782A TW201929803A (zh) 2017-10-03 2018-10-02 吸收體及吸收性物品之製造方法、以及吸收體及吸收性物品之製造裝置

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Publication number Priority date Publication date Assignee Title
JP2002301105A (ja) * 2001-04-06 2002-10-15 Uni Charm Corp 吸収性物品、吸収性物品用吸収体及びその製造方法
JP2006014878A (ja) * 2004-06-30 2006-01-19 Daio Paper Corp 吸収体の製造方法およびその製造設備、ならびに吸収体
JP2006239261A (ja) * 2005-03-07 2006-09-14 Kao Corp 吸収体の製造方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6410820B1 (en) * 1997-11-14 2002-06-25 The Procter & Gamble Company Method of making a slitted or particulate absorbent material and structures formed thereby
US20020169428A1 (en) * 2001-05-11 2002-11-14 Kimberly-Clark Worldwide, Inc. Absorbent article having a multilayer blended core and a method of forming
JP2005126623A (ja) * 2003-10-27 2005-05-19 Konica Minolta Medical & Graphic Inc ポリエステル系樹脂支持体回収方法
JP4738101B2 (ja) * 2005-08-29 2011-08-03 花王株式会社 吸収性シート
WO2017038963A1 (ja) * 2015-09-02 2017-03-09 花王株式会社 吸収体の製造方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002301105A (ja) * 2001-04-06 2002-10-15 Uni Charm Corp 吸収性物品、吸収性物品用吸収体及びその製造方法
JP2006014878A (ja) * 2004-06-30 2006-01-19 Daio Paper Corp 吸収体の製造方法およびその製造設備、ならびに吸収体
JP2006239261A (ja) * 2005-03-07 2006-09-14 Kao Corp 吸収体の製造方法

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