WO2020105077A1 - Method for producing absorbent article, apparatus for producing absorbent article, absorbent article, and absorber - Google Patents

Method for producing absorbent article, apparatus for producing absorbent article, absorbent article, and absorber

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Publication number
WO2020105077A1
WO2020105077A1 PCT/JP2018/042621 JP2018042621W WO2020105077A1 WO 2020105077 A1 WO2020105077 A1 WO 2020105077A1 JP 2018042621 W JP2018042621 W JP 2018042621W WO 2020105077 A1 WO2020105077 A1 WO 2020105077A1
Authority
WO
WIPO (PCT)
Prior art keywords
tow
absorbent article
absorber
opening
gas
Prior art date
Application number
PCT/JP2018/042621
Other languages
French (fr)
Japanese (ja)
Inventor
慧子 小林
雅人 重松
真悟 永田
Original Assignee
株式会社ダイセル
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社ダイセル filed Critical 株式会社ダイセル
Priority to CN201880096231.3A priority Critical patent/CN112584805A/en
Priority to PCT/JP2018/042621 priority patent/WO2020105077A1/en
Publication of WO2020105077A1 publication Critical patent/WO2020105077A1/en

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Classifications

    • 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
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
    • D02J1/18—Separating or spreading
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment

Definitions

  • the present invention relates to an absorbent article manufacturing method, an absorbent article manufacturing apparatus, an absorbent article, and an absorbent body.
  • Absorbent articles such as disposable diapers and urine leakage prevention pads include, for example, an absorber that absorbs water.
  • the absorber is manufactured by opening a crimped cellulose acetate tow, for example, as disclosed in Patent Document 1.
  • a plurality of fibers of the opened tow are combined with, for example, a binder.
  • the absorbent article including the absorbent body having such a structure, for example, moisture diffuses into the absorbent body through the fine pores of the top sheet arranged so as to overlap with the absorbent body, and is absorbed into the particulate matter.
  • SAP super absorbent polymer
  • the quality of the absorbent article may deteriorate due to the granular material falling off from the absorbent body. Further, by binding a plurality of fibers of the tow with a binder, the tactile sensation of the absorbent article may be deteriorated.
  • the present invention prevents the granular material from falling off from the absorbent body and prevents the tactile sensation of the absorbent article from decreasing when manufacturing an absorbent article including an absorbent body in which the granular material is arranged.
  • the purpose is to
  • the absorbent article manufacturing method the tow to be conveyed, in at least one opening chamber of the gas opening device is opened by gas, the tow of the.
  • granular material is added to the tow, and on the downstream side in the transport direction from the gas fiber opening device, to the tow.
  • a binder that binds a plurality of contained fibers is attached to the lower surface of the tow.
  • the tow to be conveyed is opened by the gas in the opening chamber of the gas opening device. Further, the particulate matter is added to the tow on the upstream side in the transport direction with respect to the outlet of the opening chamber on the most downstream side in the transport direction. As a result, a plurality of fibers of the tow are three-dimensionally entangled while being opened, and the particulate matter is dispersed in the fiber gap. Therefore, the absorbent article including the absorbent body in which the granular material is arranged can be obtained.
  • a binder that binds multiple fibers of the tow is attached to the lower surface of the tow downstream of the gas opening device in the transport direction.
  • a plurality of fibers on the lower side of the tow opened by the gas opening device can be combined. Therefore, on the lower side of the tow, it becomes easy for the particulate matter to be held in the fiber gaps of the tow. Therefore, it is possible to prevent the particulate matter from falling off from the lower surface of the absorber.
  • the absorbent body can have an unbonded region in which a plurality of fibers are not bonded. Therefore, the soft touch of the tow can be maintained. Therefore, it is possible to prevent the feel of the absorbent article from being deteriorated.
  • the binder may be further attached to the upper surface of the tow on the downstream side of the gas opening device in the transport direction. Accordingly, it is possible to favorably prevent the particulate matter from falling off the upper surface of the absorber.
  • the binder may be further attached to a side surface of the tow, which is perpendicular to the transport direction, on the downstream side of the gas opening device in the transport direction. Accordingly, it is possible to favorably prevent the particulate matter from falling off from the side surface of the absorber that is perpendicular to the transport direction.
  • the towing is opened by the gas opening device having a tubular opening part in which the opening chamber is formed, and an introducing part that introduces the tow and the gas into the opening part. May be.
  • the tow can be efficiently and bulky opened by the gas introduced into the opening chamber of the tubular opening part from the introduction part while preventing the particulate matter from falling out of the absorber.
  • the particulate matter may be added to the tow at the upstream side in the transport direction with respect to the gas introduction port in the introduction section. As a result, it is possible to easily disperse and disperse the particulate matter uniformly throughout the tow to be opened in the opening chamber while preventing the particulate matter from falling off from the absorbent body.
  • the particulate matter may be added to the tow at a position in the opening part that is separated from the inner peripheral surface of the opening part. Accordingly, it is possible to prevent the particulate matter from falling off from the absorbent body and facilitate the encapsulation of the particulate matter inside the tow opened in the opening chamber.
  • the gas opening device may be arranged so that the tow can pass downhill. This makes it possible to increase the efficiency of the space for disposing the gas opening device by tilting the gas opening device while preventing the particulate matter from falling out of the absorber.
  • the particles may be added to the tow inside the opening part. This makes it possible to facilitate the disposition of the particulate matter inside the tow while preventing the particulate matter from falling off from the absorbent body.
  • the tow may be opened by bringing the tow into contact with the peripheral surfaces of a plurality of opening roll pairs on the upstream side of the gas opening device in the conveying direction. Accordingly, the tow opened by the plurality of pairs of opening rolls can be further opened by the gas opening device while being entwined three-dimensionally. Therefore, it is possible to prevent the particulate matter from falling off from the absorbent body while opening the tow satisfactorily.
  • a liquid-permeable porous sheet may be supplied to the upper surface of the tow having the binder added to the lower surface. As a result, it is possible to favorably prevent the absorbent article from returning to the liquid while preventing the particulate matter from falling off from the absorbent body.
  • An absorbent article manufacturing apparatus is a gas opening device that opens a tow to be conveyed by gas in at least one opening chamber, and a most downstream side in the conveying direction of the tow. Included in the tow on the upstream side in the transport direction from the outlet of the opening chamber, a granular material adding device for adding particulates to the tow, and on the downstream side in the transport direction from the gas opening device.
  • a binder for binding a plurality of fibers to the lower surface of the tow comprising a binder attachment device, the gas opening device, a tubular opening portion in which the opening chamber is formed,
  • the opening section has an introduction section for introducing the tow and the gas, and the tow is arranged so that it can pass in a downward slope.
  • the absorbent article including the absorbent body in which the granular material is arranged. Further, on the lower side of the tow, it becomes easier for the particulate matter to be held in the fiber gaps of the tow. Therefore, it is possible to prevent the particulate matter from falling off from the absorber. In addition, the soft touch of the tow can be maintained. Therefore, it is possible to prevent the touch of the absorbent article from being deteriorated.
  • a gas opening device is placed so that the tow can pass downhill. Therefore, the gas opening device can be arranged to be inclined. Therefore, the space for disposing the gas opening device can be made efficient.
  • the fiber opening device has a flow channel cross-sectional shape in which the height dimension is smaller than the width dimension when viewed from the tow conveying direction. Therefore, it is possible to open the tow so as to widen it and arrange the granular material inside the tow. Therefore, the degree of freedom in designing the absorber can be improved.
  • An absorbent article is a tow made of a plurality of opened fibers, and a sheet-shaped absorbent body including a granular material arranged inside the tow, and the absorbent body.
  • the bonding region extends along the other surface on the other surface side of the absorber, the non-bonding area, It is arranged on the inner side in the thickness direction of the absorber with respect to the coupling region.
  • the binding region of the absorber extends along the other surface on the other surface side of the absorber. Therefore, it is possible to prevent the particulate matter arranged inside the tow of the absorbent body from falling off from the other surface side of the absorbent body. As a result, an absorbent article in which the particulate matter is prevented from falling off is obtained.
  • the non-bonding region of the absorbent body is arranged inside the bonding region in the thickness direction of the absorber. Therefore, the soft touch of the tow can be maintained. Therefore, it is possible to prevent the tactile sensation of the absorbent article including the absorber from being lowered.
  • the porous sheet is arranged so as to overlap with the absorbent body on one surface side of the absorbent body. Therefore, the absorbent body can quickly absorb the moisture through the porous sheet.
  • the binding region may further extend along the one surface on the one surface side of the absorber. As a result, it is possible to favorably prevent the particulate matter disposed inside the tow of the absorbent body from falling off from one surface side of the absorbent body.
  • the coupling region may further extend along the side surface of the absorber from the other surface side toward the one surface side. Accordingly, it is possible to favorably prevent the particulate matter arranged inside the tow of the absorbent body from falling off from the side surface of the absorbent body.
  • An absorber is formed into a sheet containing a tow consisting of a plurality of opened fibers and a granular material arranged inside the tow, and a plurality of the tows. And a non-bonded region in which a plurality of fibers of the tow are not bonded, the bond region extending along the first surface on the first surface side.
  • the non-bonding region is arranged inside the bonding region in the thickness direction.
  • the bonding area of the absorbent body extends along the first surface on the first surface side of the absorbent body. Therefore, it is possible to prevent the particulate matter arranged inside the tow of the absorbent body from falling off from the first surface side of the absorbent body. As a result, an absorbent body can be obtained in which the particulate matter is prevented from falling off.
  • the non-bonding region of the absorber is arranged inside the absorber in the thickness direction of the absorber. Therefore, the soft touch of the tow can be maintained. Therefore, when an absorbent article including the absorber is manufactured, it is possible to prevent the tactile sensation of the absorbent article from being deteriorated.
  • the bonding area may further extend along the second surface on the second surface side. Accordingly, it is possible to favorably prevent the particulate matter arranged inside the tow of the absorbent body from falling off from the second surface side of the absorbent body.
  • the bonding region may further extend along the side surface from the first surface side toward the second surface side. Accordingly, it is possible to favorably prevent the particulate matter arranged inside the tow of the absorbent body from falling off from the side surface of the absorbent body.
  • the present invention it is possible to prevent the granular material from falling off from the absorbent body when manufacturing an absorbent article including the absorbent body in which the granular material is arranged.
  • the upstream side refers to the upstream side of the tow band 60 in the transport direction P.
  • the downstream side refers to the downstream side of the tow band 60 in the transport direction P.
  • FIG. 1 is a schematic diagram of an absorbent article manufacturing apparatus 1 (hereinafter, referred to as manufacturing apparatus 1) according to the first embodiment.
  • FIG. 2 is a vertical cross-sectional view of the gas opening device 9 and the particulate matter adding device 10 of FIG. 1 viewed from the width direction of the tow band. In FIG. 2, the illustration of the storage section 23 of the particulate matter addition device 10 is omitted.
  • FIG. 3 is an exploded view of the spread part 20 of FIG.
  • a packaging container C is arranged near the manufacturing apparatus 1.
  • a tow band 60 including a plurality of fibers is compressed and packed in a bale-shaped folded state.
  • the packaging container C of FIG. 1 has a sectional structure.
  • the fibers of the tow band 60 are, for example, long fibers of cellulose acetate tow, but are not limited thereto.
  • the tow band 60 is transported in the transport direction P while keeping the width direction horizontal.
  • the manufacturing apparatus 1 includes a first manufacturing unit 2 and a second manufacturing unit 3.
  • the first manufacturing unit 2 manufactures the absorber 61 using the tow band 60.
  • the first manufacturing unit 2 includes a first widening device 4, a guide 5, a second widening device 6, a first opening roll pair 7, a second opening roll pair 8, a gas opening device 9, a particulate matter addition device 10, It has a binder attachment device 11 and a transport roll pair 12.
  • the first widening device 4 widens the tow band 60 rolled up from inside the packaging container C in the width direction.
  • the guide 5 guides the tow band 60 that has passed through the first widening device 4 toward the second widening device 6.
  • the second widening device 6 further widens the tow band 60 that has passed through the guide 5 in the width direction.
  • the opening roll pairs 7 and 8 further open the tow band 60 that has passed through the second widening device 6, on the upstream side of the gas opening device 9.
  • the second opening roll pair 8 is arranged on the downstream side of the first opening roll pair 7.
  • the first opening roll pair 7 has a pair of rolls 14 and 15.
  • the second opening roll pair 8 has a pair of rolls 16 and 17.
  • the tow band 60 that has passed through the second widening device 6 is inserted between the pair of rolls 14 and 15 and between the pair of rolls 16 and 17. As a result, the tow band 60 is opened while tension is applied in the transport direction P.
  • the tow band 60 that has passed through the second opening roll pair 8 is guided by the plurality of guide rolls 13 and introduced into the gas opening device 9.
  • the gas opening device 9 opens the tow band 60 with the gas G.
  • the gas opening device 9 has a long shape, and a transport path 9a for transporting the tow band 60 is formed inside.
  • the gas opening device 9 of this embodiment is arranged so that the upstream side is higher than the downstream side.
  • the transport path 9a extends downward from the upstream side to the downstream side.
  • the space for disposing the gas opening device 9 is more efficient than when the gas opening device 9 is arranged horizontally, for example.
  • the gas opening device 9 may be arranged horizontally, for example.
  • the gas opening device 9 has a connection part 18, an introduction part 19, an opening part 20, and a retention part 21.
  • the transport path 9a includes an internal space 18a of the connection part 18, an internal space 19a of the introduction part 19 and a tow band introduction path 19b, an internal space 20a of the fiber opening part 20, and a retention chamber 21a of the retention part 21.
  • connection part 18 is attached to the upstream side of the introduction part 19 and is connected to the supply pipe 24 of the particulate matter addition device 10.
  • the internal space 18a is connected to the internal space 19a.
  • the connecting portion 18 introduces the tow band 60 that has passed through the second opening roll pair 8 into the introducing portion 19 via the internal space 18a. Further, the granular material 50 is supplied from the supply pipe 24 of the granular material adding device 10 to the internal space 18a.
  • the introducing section 19 introduces the tow band 60 and the granular material 50 into the opening section 20.
  • the introduction portion 19 has a cylindrical shape, and an internal space 19a extending in the transport direction P is formed.
  • the introduction unit 19 generates a jet by the gas G introduced from the outside in the internal space 19a. Thereby, the introduction part 19 mixes the tow band 60 and the granular material 50.
  • the introduction section 19 has a tubular mixing section 41 and a nozzle section 42.
  • the mixing section 41 has a gas inlet 41a, a tow band inlet 41b, and a tow band outlet 41c.
  • the gas inlet 41a is arranged on the upstream side of the mixing section 41.
  • the tow band inlet 41b is arranged at the upstream end of the mixing section 41.
  • the tow band outlet 41c is arranged at the downstream end of the mixing section 41.
  • the gas inlet 41a introduces the pressurized gas G (air as an example) into the internal space 19a.
  • the addition position of the particulate matter 50 to the tow band 60 is located upstream of the gas introduction port 41a.
  • the tow band introduction port 41b introduces the tow band 60 into the internal space 19a.
  • the downstream end of the mixing section 41 is connected to the fiber opening section 20.
  • the nozzle portion 42 is arranged on the upstream side of the internal space 19a.
  • a taper portion 42a that tapers from the upstream side toward the downstream side is formed at the downstream end of the nozzle portion 42.
  • the inner peripheral surface of the mixing portion 41 facing the outer peripheral surface of the tapered portion 42a is reduced in diameter from the upstream side to the downstream side while being separated from the outer peripheral surface of the tapered portion 42a.
  • a jet flow path 19c is formed between the outer peripheral surface of the tapered portion 42a and the inner peripheral surface of the mixing portion 41.
  • the jet flow path 19c generates a jet by the gas G introduced into the internal space 19a from the gas introduction port 41a.
  • a tow band introduction path 19b is formed inside the nozzle portion 42.
  • the outlet of the tow band introduction path 19b is arranged on the downstream side of the gas introduction port 41a.
  • the tow band 60 that has passed through the tow band introduction path 19b is mixed with the particulate matter 50 by the gas G that has passed through the jet flow path 19c and flows through the internal space 19a.
  • the gas G may be a gas other than air.
  • the outlet of the tow band introducing passage 19b and the gas introducing port 41a may be arranged at a position overlapping with each other when viewed from the side. Further, the outlet of the tow band introducing passage 19b may be arranged on the upstream side of the gas introducing port 41a.
  • the opening part 20 opens the tow band 60 to form it, and disperses and arranges the granular material 50 inside the tow band 60.
  • the opening section 20 has a tubular shape, and an internal space 20a extending in the transport direction P is formed inside.
  • the internal space 20a has at least one opening chamber (here, the first opening chamber 20f and the first opening chamber 20f, which has a flow passage cross-sectional shape in which the height dimension (thickness dimension of the tow band 60) is smaller than the width dimension when viewed from the transport direction P. It has a second opening chamber 20g).
  • the opening section 20 opens the conveyed tow band 60 with the gas G and mixes the tow band 60 and the granular material 50.
  • the opening unit 20 has a first member 43 and a second member 44 which are combined with each other in the thickness direction of the tow band 60. Grooves 43a and 44a extending in the transport direction P are formed at the centers of the surfaces of the first member 43 and the second member 44 facing each other.
  • the inner peripheral surface 20c of the spread portion 20 is formed by combining the groove portions 43a and 44a.
  • the inner space 20a is formed by the inner peripheral surface 20c.
  • the internal space 20a communicates with the internal space 19a of the introduction part 19.
  • the opening section 20 has an upstream section 20d and a downstream section 20e.
  • a flow path 20b and a first opening chamber 20f are formed in the upstream portion 20d.
  • the flow path 20b is located on the upstream side of the upstream portion 20d.
  • the first opening chamber 20f has an upstream area 20f1 and a downstream area 20f2.
  • the width W1 of the upstream region 20f1 gradually increases from the upstream side to the downstream side.
  • the width W2 of the downstream region 20f2 gradually increases from the upstream side to the downstream side at a rate faster than the width W1 of the upstream region 20f1.
  • the flow passage cross-sectional area of the first opening chamber 20f gradually increases from the upstream side to the downstream side.
  • the opening unit 20 has a region in which the flow passage cross-sectional area of the internal space 20a increases in the transport direction P.
  • the tow band 60 passes through the inside of the first opening chamber 20f, the tow band 60 expands according to the shape of the first opening chamber 20f and is opened while entwining a plurality of fibers three-dimensionally.
  • a second opening chamber 20g is formed inside the downstream portion 20e.
  • the second opening chamber 20g is continuous with the first opening chamber 20f.
  • the width W3 of the second opening chamber 20g is wider than the width W2 at the outlet of the downstream region 20f2.
  • the flow passage cross-sectional area of the second opening chamber 20g is larger than the flow passage cross-sectional area at the outlet of the downstream region 20f2.
  • Width W3 of the second opening chamber 20g is constant in the transport direction P.
  • the flow passage cross-sectional shape of the first opening chamber 20f and the second opening chamber 20g may be circular, for example.
  • the retention section 21 is arranged on the downstream side of the opening section 20, and temporarily retains the tow band 60 that has passed through the internal space 19a.
  • the retention section 21 has a plurality of elongated members 22.
  • the upstream end of the elongated member 22 is connected to the downstream end of the fiber opening unit 20.
  • a retention chamber 21 a extending in the transport direction P is formed in the retention part 21 by the plurality of elongated members 22.
  • annular end surface 20h extending perpendicularly to the transport direction P is formed at the boundary between the upstream portion 20d and the downstream portion 20e.
  • the end face 20h extends in the circumferential direction of the second opening chamber 20g and is provided with a plurality of holes into which the elongated members 22 are inserted.
  • the plurality of long members 22 are extended in the transport direction P at intervals in the circumferential direction of the transport path 9a.
  • the flow passage cross-sectional shape of the retention chamber 21a is similar to the flow passage cross-sectional shape of the internal space 20a at the connection position between the elongated member 22 and the end surface 20h. Therefore, the shape of the tow band 60 molded while being opened by the first opening chamber 20f and the second opening chamber 20g is retained also in the retention chamber 21a.
  • the downstream ends of the plurality of long members 22 are closer to each other as they go from the upstream side to the downstream side.
  • the tow band 60 that has passed through the outlet of the internal space 20a temporarily stays in the stay chamber 21a and then passes through the stay portion 21.
  • the retention section 21 suppresses expansion of the tow band 60 and adjusts the bulk and fiber density of the tow band 60.
  • the particulate matter adding device 10 adds the particulate matter 50 to the tow band 60 on the upstream side in the transport direction P from the outlet of the opening chamber (the second opening chamber 20g in the present embodiment) on the most downstream side in the transport direction P. To do.
  • the granular material 50 has a water-absorbing property, and contains a highly water-absorbing resin as an example.
  • the particulate matter addition device 10 has a storage part 23 and a supply pipe 24.
  • the granular material 50 is stored in the storage unit 23.
  • the supply pipe 24 has one end connected to the storage portion 23 and the other end connected to the transport path 9a.
  • the supply pipe 24 extends downward from the one end toward the other end.
  • the particulate matter addition device 10 causes the particulate matter 50 stored in the storage portion 23 to flow through the supply pipe 24. As a result, the particulate matter addition device 10 adds to the tow band 60 in the internal space 19a.
  • the granular material adding device 10 adds the granular material 50 to the tow band 60 from the lower surface 60b side of the tow band 60.
  • the particulate matter addition device 10 may add the particulate matter 50 to the tow band 60 from the upper surface 60a side of the tow band 60.
  • the particulate matter adding device 10 includes the particulate matter 50 in the tow band 60 on the upstream side of the gas opening device 9 (for example, on the downstream side of the second opening roll pair 8 and on the upstream side of the gas opening device 9). May be arranged to add.
  • the binder impregnating device 11 impregnates, on the downstream side of the gas opening device 9, a binder B that binds a plurality of fibers contained in the tow band 60 to the lower surface 60b of the tow band 60.
  • the binder attachment device 11 of the present embodiment attaches the binder B to the entire circumference of the tow band 60 as viewed in the transport direction P.
  • the lower surface 60b of the tow band 60 is on the side opposite to the surface (upper surface 60a) of the tow band 60 that first comes into contact with moisture when the absorbent article 64 (see FIG. 4) manufactured by the manufacturing apparatus 1 is used. Is a face.
  • the binder attachment device 11 has a case 26, a spraying section 27, a guide section 28, and a discharging section 29.
  • the spray unit 27 has at least one nozzle.
  • the spray part 27 is arranged so that the liquid binder B can be sprayed from the nozzle toward the lower surface of the tow band 60 from the lower side of the case 26.
  • the spray unit 27 has a plurality of nozzles.
  • the spray part 27 is arranged so that the liquid binder B can be sprayed from the nozzle toward the entire circumference of the tow band 60 passing through the case 26 as viewed in the transport direction P.
  • the binder B is supplied to the spray unit 27 through the tube 30 extending from the case 26 to the outside.
  • the guide portion 28 extends vertically inside the case 26.
  • the guide portion 28 supports the upper surface 60a and the lower surface 60b of the tow band 60 to stabilize the attitude of the tow band 60.
  • the discharging unit 29 is disposed below the case 26, and discharges the residual binder B sprayed from the spraying unit 27 to the outside of the case 26.
  • the toe band 60 is changed.
  • the binder B can be attached to a region from the surface of the to a predetermined depth.
  • the depth dimension of the binder B attachment area from the surface of the tow band 60 can be appropriately set.
  • the depth dimension is, for example, preferably a value in the range of 0 or more and 1/5 or less of the thickness dimension of the tow band 60 in the transport region from the exit of the binder attachment device 11 to the nip point of the transport roll pair 12, and 0 It is more preferable that the value is in the range of 1/10 or more, and it is further preferable that the value is in the range of 0 or more and 1/20 or less.
  • the method by which the binder attachment device 11 attaches the binder B to the tow band 60 is not limited.
  • a method of attaching the binder B to the tow band 60 using any of a rotating brush, a rotating roll, or a rotating disk may be used.
  • plasticizers capable of dissolving the fibers of the tow band 60 can be used.
  • plasticizer that can be used include ester plasticizers such as triacetin, triethylene, glycol diacetate, triethylene glycol dipropionate, dibutyl phthalate, dimethoxyethyl phthalate, and citric acid triethyl ester.
  • ester plasticizers such as triacetin, triethylene, glycol diacetate, triethylene glycol dipropionate, dibutyl phthalate, dimethoxyethyl phthalate, and citric acid triethyl ester.
  • the plasticizer can be appropriately selected depending on the type of the tow band 60.
  • the tow band 60 contains cellulose acetate tow
  • a plasticizer is volatile. Therefore, it is possible to prevent the plasticizer from remaining in the manufactured absorbent article 64. Thereby, the safety of the absorbent article 64 can be improved.
  • the amount of the binder B attached to the tow band 60 can be set appropriately.
  • the impregnated amount is preferably, for example, a value in the range of 1 wt% to 50 wt% of the total weight of the tow band 60 with the binder B immediately after impregnating the binder B, and a value in the range of 1 wt% to 10 wt% inclusive. Is more desirable.
  • the pair of transfer rolls 12 transfers the tow band 60 that has passed through the binder attachment device 11 to the downstream side.
  • the tow band 60 is inserted between the pair of transport rolls 31 and 32 included in the transport roll pair 12.
  • the tow band 60 is pressed in the thickness direction by the pair of transport rolls 31 and 32. Thereby, the absorber 61 is manufactured.
  • the absorber 61 is conveyed to the second manufacturing unit 3.
  • the second manufacturing unit 3 arranges the back sheet 62 having air permeability and the top sheet (porous sheet) 63 having liquid permeability on the absorber 61 in an overlapping manner.
  • the second manufacturing unit 3 includes a first supply device 35, a transport device 36, a second supply device 37, a third supply device 38, a molding roll pair 39, and a sticking device 40.
  • the first feeding device 35 feeds the strip-shaped backsheet 62 from the first sheet roll R1 and feeds it onto a predetermined conveyance line L.
  • the transport device 36 transports the back sheet 62 to the transport line L.
  • the absorber 61 is supplied onto the back sheet 62.
  • the second supply device 37 feeds the strip-shaped top sheet 63 from the second sheet roll R2, and puts the top sheet 63 on the transport line L so that the absorber 61 is sandwiched between the back sheet 62 and the top sheet 63. Supply.
  • the third supply device 38 supplies the adhesive to the top sheet 63 between the second sheet roll R2 and the forming roll pair 39.
  • the molding roll pair 39 conveys the stacked back sheet 62, absorber 61, and top sheet 63 to the downstream side while molding them.
  • the sticking device 40 presses the back sheet 62 and the top sheet 63 in the thickness direction, and sticks the back sheet 62 and the top sheet 63 with an adhesive while sandwiching the absorber 61.
  • the back sheet 62, the absorber 61, and the top sheet 63 that are stuck by the sticking device 40 are cut into predetermined dimensions. Thereby, the absorbent article 64 is manufactured.
  • the backsheet 62 of the absorbent article 64 may be omitted depending on the application.
  • the tow band 60 to be conveyed is opened by the gas G in at least one opening chamber of the gas opening device 9 by using the manufacturing device 1, and the most downstream side.
  • the particulate matter 50 is added to the tow band 60 on the upstream side of the outlet of the fiber opening chamber in the above, and the binder B is attached to the lower surface 60b of the tow band 60 on the downstream side of the gas opening device 9.
  • the absorbent article 64 including the absorbent body 61 in which the granular material 50 is arranged is obtained.
  • the binder B is attached to the lower surface 60b of the tow band 60 on the downstream side of the gas opening device 9.
  • a plurality of fibers under the tow band 60 opened by the gas opening device 9 can be combined. Therefore, on the lower side of the tow band 60, the particulate matter 50 is easily held in the fiber gap of the tow band 60. Therefore, it is possible to prevent the granular material 50 from falling off from the lower surface of the absorber 61.
  • the binder B is locally attached to the lower surface 60b of the tow band 60 with respect to the tow band 60, so that the absorbent body 61 can have an unbonded region 60d to which a plurality of fibers described later are not bonded. Therefore, the soft touch of the toe band 60 can be maintained. Therefore, it is possible to prevent the tactile sensation of the absorbent article 64 from being lowered.
  • the binder B is attached to the upper surface 60a of the tow band 60 on the downstream side of the gas opening device 9. Accordingly, it is possible to favorably prevent the particulate matter 50 from falling off the upper surface of the absorber 61.
  • the binder B is attached to the side surface of the tow band 60 perpendicular to the conveying direction P. Thereby, it is possible to favorably prevent the granular material 50 from falling off from the side surface of the absorber 61.
  • the tow band 60 is opened by the gas opening device 9 having the opening portion 20 and the introduction portion 19. Thereby, the tow band 60 can be efficiently and bulky opened by the gas G while preventing the granular material 50 from falling off from the absorber 61.
  • the particulate matter 50 is added to the tow band 60 on the upstream side of the gas introduction port 41a in the introduction section 19. As a result, it is possible to prevent the granular material 50 from falling off from the absorbent body 61, and to easily disperse the granular material 50 uniformly over the entire tow band 60 opened in the opening chamber.
  • the opening chamber has a flow passage cross-sectional shape whose height dimension is smaller than its width dimension when viewed from the transport direction P.
  • the tow band 60 is brought into contact with the peripheral surfaces of the plurality of opening roll pairs 7 and 8 to open the tow band 60.
  • the tow band 60 opened by the plurality of pairs of opening rolls 7 and 8 can be further opened by the gas opening device 9 while being entwined three-dimensionally. Therefore, it is possible to prevent the particulate matter 50 from falling off from the absorbent body 61 while satisfactorily opening the tow band 60.
  • liquid-permeable top sheet 63 is supplied to the upper surface 60a of the tow band 60 having the binder B added to the lower surface 60b. As a result, it is possible to prevent the granular material 50 from falling off from the absorbent body 61, and at the same time, prevent the liquid from returning to the absorbent article 64.
  • FIG. 4 is a vertical cross-sectional view of the absorbent body 61 according to the first embodiment viewed from the transport direction P.
  • FIG. 5 is a vertical cross-sectional view of the absorbent article 64 according to the first embodiment seen from the transport direction P.
  • the absorbent body 61 is formed in a sheet shape including a tow band 60 formed by a plurality of opened fibers and a granular material 50 arranged inside the tow band 60.
  • the granular material 50 is uniformly dispersed and arranged in the entire interior thereof.
  • the absorber 61 has a bonding region 60c in which a plurality of fibers of the tow band 60 are bonded and an unbonding region 60d in which a plurality of fibers of the tow band 60 are not bonded.
  • the binder attachment device 11 attaches the binder B to the entire circumference of the tow band 60 as viewed in the transport direction P. Therefore, as viewed in the transport direction P, the coupling region 60c is arranged on the entire circumference of the absorber 61, and the non-coupling region 60d is arranged inside the absorber 61.
  • the total denier (TD) of the tow band 60 in the absorber 61 can be set appropriately.
  • the total denier of the tow band 60 can be set to a value in the range of 15,000 or more and 50,000 or less.
  • the basis weight of the absorber 61 can be set as appropriate.
  • the basis weight of the absorber 61 can be set to a value in the range of 20 g / m 2 or more and 200 g / m 2 .
  • the thickness dimension of the absorber 61 (thickness dimension after compression by the pair of molding rolls 39) can be appropriately set.
  • the thickness dimension of the absorber 61 can be set to a value in the range of 5 mm or more and 30 mm or less.
  • the restoring force of the tow band 60 is high, and the thickness dimension of the absorber 61 may not change much before and after compression molding with the molding roll pair 39.
  • the absorbent article 64 includes an absorber 61, a backsheet 62, and a topsheet 63.
  • the absorber 61 has a reduced thickness dimension as compared with the tow band 60 shown in FIG. 4 due to being compressed by the pair of transport rolls 12.
  • the top sheet 63 is arranged so as to overlap with the absorber 61 on one surface (upper surface) side of the absorber 61.
  • the back sheet 62 is arranged on the other surface (lower surface) side of the absorber 61 so as to overlap with the absorber 61.
  • the bonding region 60c of the absorbent body 61 extends along the other surface on the first surface (here, the other surface) side of the absorbent body 61. Thereby, it is possible to prevent the granular material 50 arranged inside the tow band 60 of the absorber 61 from falling off from the other surface side of the absorber 61. Thereby, the absorbent article 64 in which the granular material 50 is prevented from falling off is obtained.
  • the coupling region 60c of the absorbent body 61 extends along the one surface on the second surface (here, the one surface) side of the absorbent body 61. Accordingly, it is possible to favorably prevent the granular material 50 arranged inside the tow band 60 of the absorber 61 from falling off from one surface side of the absorber 61.
  • the coupling region 60c extends along the side surface of the absorbent body 61 from the other surface side toward the one surface side.
  • the coupling region 60c extends along the side surface of the absorber 61 in a partial region (regions on both sides in the width direction) of the absorber 61. Accordingly, it is possible to favorably prevent the granular material 50 arranged inside the tow band 60 of the absorber 61 from falling off from the side surface of the absorber 61.
  • the non-bonding region 60d of the absorbent body 61 is arranged on the inner side in the thickness direction of the absorbent body 61 than the bonding region 60c.
  • the soft touch of the toe band 60 can be maintained. Therefore, it is possible to prevent the tactile sensation of the absorbent article 64 including the absorber 61 from being deteriorated.
  • the top sheet 63 is arranged so as to overlap the absorbent body 61 on one surface side of the absorbent body 61. Thereby, the absorbent body 61 can quickly absorb the moisture through the top sheet 63.
  • the back sheet 62 is arranged so as to overlap the absorbent body 61 on the other surface side of the absorbent body 61. Therefore, the backsheet 62 can prevent the moisture absorbed by the absorber 61 from leaking from the absorber 61. In addition, since the back sheet 62 exhibits air permeability, it is possible to prevent stuffiness from occurring during mounting.
  • FIG. 6 is a vertical cross-sectional view of the absorber 161 according to the first modified example of the first embodiment as seen from the transport direction P.
  • FIG. 7 is a vertical cross-sectional view of the absorbent article 164 according to the first modified example of the first embodiment as seen from the transport direction P.
  • the absorbent body 161 has the bonding regions 60c arranged only on one surface side and the other surface side.
  • the absorber 161 is obtained by setting the spraying direction of the spraying section 27 so that the binder B is adhered only to one surface side and the other surface side of the tow band 60 in the binder attachment device 11.
  • FIG. 8 is a vertical cross-sectional view of the absorber 261 according to the second modified example of the first embodiment as seen from the transport direction P.
  • FIG. 9 is a vertical cross-sectional view of the absorbent article 264 according to the second modified example of the first embodiment as seen from the transport direction P.
  • the absorbent body 261 has the bonding region 60c arranged only on the other surface side.
  • the absorber 261 is obtained by setting the spray direction of the spray unit 27 so that the binder B is adhered only to the other surface side of the tow band 60 in the binder adhering device 11.
  • the amount of the binder B attached to the tow band 60 in Modification 2 can be set as appropriate.
  • the attached amount is preferably a value in the range of 1 wt% to 25 wt% of the weight of the tow band 60 with the binder B immediately after the binder B is attached, and a value in the range of 1 wt% to 5 wt% inclusive, for example. Is more desirable.
  • FIG. 10 is a vertical cross-sectional view of the gas opening device 109 and the particulate matter adding device 110 according to the second embodiment as seen from the width direction of the tow band.
  • the gas opening device 109 of the second embodiment does not have a connecting portion corresponding to the connecting portion 18 of the gas opening device 9.
  • the supply pipe 124 of the particulate matter addition device 110 is connected to the opening part 120 of the gas opening device 109.
  • the downstream end portion 124a of the supply pipe 124 is exposed to the internal space 120a.
  • the downstream end portion 124a is arranged so as to open toward the downstream side in the transport direction P at a position in the opening portion 120 that is separated from the inner peripheral surface 120c of the opening portion 120.
  • the downstream end portion 124a extends parallel to the transport direction P in the internal space 120a.
  • the particulate matter 50 stored in the storage portion 123 is added to the tow band 60 at a position in the fiber opening part 120 that is separated from the inner peripheral surface 120c of the fiber opening part 120.
  • the granular material 50 is added to the inside of the tow band 60 in the process of opening the fibers on the downstream side in the transport direction P as compared with the first embodiment.
  • FIG. 11 is a vertical cross-sectional view of the absorbent body 361 according to the second embodiment as viewed in the transport direction P.
  • FIG. 12 is a vertical cross-sectional view of the absorbent article 364 according to the second embodiment as viewed in the transport direction P.
  • the granular material 50 is added to the inside of the tow band 60 during opening, so that the granular material 50 is sealed inside the tow band 60.
  • the binding region 60c is arranged on the entire circumference of the absorber 361 viewed from the transport direction P, and the particulate matter 50 is dispersed and arranged inside the non-binding region 60d surrounded by the binding region 60c. Has been done.
  • the granular material 50 is added to the tow band 60 at a position in the spread part 120 that is separated from the inner peripheral surface 120c of the spread part 120. This makes it possible to prevent the particulate matter 50 from falling off from the absorbent body 361, and at the same time, to facilitate the sealing of the particulate matter 50 inside the tow band 60 opened in the opening chamber.
  • the granular material 50 is not exposed on the surface of the absorbent body 361. Therefore, the tactile sensation after absorbing water can be kept relatively good. Note that in FIGS. 11 and 12, the granular material 50 is not dispersed and arranged inside the joint region 60c. However, some of the particles 50 may be dispersed and arranged inside the coupling region 60c.
  • the addition position of the particulate matter 50 (the opening position of the downstream end portion 124a) is upstream of the outlet of the fiber-opening chamber on the most downstream side in the transport direction P, and from the tow band introduction port 141b. May be located on the downstream side.
  • the addition position of the granular material 50 may be, for example, on the upstream side of the center of the internal space 120a in the transport direction P. Further, the addition position of the particulate matter 50 may be on the downstream side of the tow band introduction passage 119b in the internal space 119a.
  • the particles 50 are passed inside the tow band 60 passing through the gas opening device 109. Have been found to be easily distributed uniformly.
  • the coupling region 60c may be arranged only on one surface side and the other surface side as in the first modification. Further, in the absorber of the second embodiment, the coupling region 60c may be arranged only on the other surface side as in the second modification.
  • the absorber 61 was manufactured as Example 1 using the manufacturing apparatus 1 of the first embodiment. Moreover, the absorber 361 was manufactured as Example 2 using the manufacturing apparatus of the second embodiment. Further, an absorber was manufactured as Comparative Example 1 by using an apparatus in which the impregnation apparatus 11 was omitted from the manufacturing apparatus 1 of the first embodiment. An absorbent body was manufactured as Comparative Example 2 by using a device obtained by omitting the attachment device 11 from the manufacturing device of the second embodiment.
  • Example 2 a comparative example of an absorber was used under the same conditions as in Example 1 except that the manufacturing apparatus 1 of the first embodiment was used and the impregnation apparatus 11 was arranged upstream of the tow band introduction port 41b of the introduction unit 19. Manufactured as 3.
  • An absorber was used under the same conditions as in Example 2 except that the manufacturing apparatus of the second embodiment was used and the impregnation apparatus 11 was arranged upstream of the tow band introduction port 141b (see FIG. 10) of the introduction unit 119. It was manufactured as Comparative Example 4.
  • the tow bands used in Examples 1 and 2 and Comparative Examples 1 to 4 had a width dimension of 10 cm and a weight per length dimension of 30 cm of 6 g.
  • the amount of the particulate matter 50 added to the tow band was 2 g per tow band having a length of 30 cm.
  • the binder B triacetin was used as the binder B.
  • the absorbers of Examples 1 and 2 and Comparative Examples 1 to 4 were evaluated by the following procedure. First, the tactile sensation of each absorbent body was evaluated by touching the surfaces of the absorbent bodies of Examples 1 and 2 and Comparative Examples 1 to 4 with a hand.
  • a glass tube with an inner diameter of 6 cm was placed on the upper surface of the elongated absorber with the opening oriented vertically. In this state, 50 ml of physiological saline colored blue was poured into the glass tube at once.
  • the liquid diffusion length (longitudinal diffusion length and horizontal diffusion length) of the physiological saline formed on the upper surface of the absorber was measured.
  • the vertical diffusion length was in the longitudinal direction of the absorber, and the horizontal diffusion length was in the width direction of the absorber. This evaluated the water absorption.
  • the larger the liquid diffusion length the easier it is for the physiological saline to contact the particulate matter contained in the absorber. Therefore, it can be evaluated as having excellent water absorption.
  • Comparative Examples 1 and 2 were found to have a relatively high dropout rate of particulate matter. It is conceivable that the reason for this is that in Comparative Examples 1 and 2, since the binder B was not attached to the tow band 60, the particulate matter 50 was easily dropped from the fiber gap.
  • Comparative Example 2 did not have very good water absorption. The reason for this is that in Comparative Example 2, since the binder B was not attached to the tow band 60, the size of the fiber gaps on the surface of the tow band 60 was varied, and the granular material 50 enclosed inside the tow band 60 through each fiber gap. It is conceivable that it became difficult for the water to reach evenly.
  • Comparative Examples 3 and 4 did not have excellent tactile sensation. The reason for this is that in Comparative Examples 3 and 4, the amount of the binder B attached to the tow band 60 was relatively large, and since the binder B was attached to the entire inside of the tow band 60, the fibers were bound throughout the tow band 60, It is possible that the texture has become stiff.
  • Examples 1 and 2 are superior to Comparative Examples 1 to 4 in terms of the rate of dropout of particulate matter, the feel, and the water absorption.
  • the toe band 60 of the absorber 61 includes the binding region 60c and the non-binding region 60d. As a result, it is considered that the falling of the granular material 50 was prevented by the joining region 60c and the tactile sensation was well retained in the non-joining region 60d.
  • Example 2 when the particulate matter 50 is arranged in the entire tow band 60 (Example 1) because the fiber gap is maintained by the bonding region 60c, the particulate matter 50 is inside the tow band 60. It is conceivable that good water absorption was exhibited in any of the cases of being unevenly distributed (Example 2).
  • the tow band 60 has the coupling region 60c arranged all around the circumference.
  • the same degree of results as those of the examples 1 and 2 can be obtained.
  • the absorbent articles 64 and 364 including the absorbers 61 and 361 of Example 1 or 2 are manufactured, the upper surfaces of the absorbers 61 and 361 are covered with the top sheet 63.
  • the absorbers 61 and 361 of Examples 1 and 2 have excellent tactile sensations, it is considered that the tactile sensations of the absorbent articles 64 and 364 including the absorbers 61 and 361 are also excellent.
  • the absorbent articles 64 and 364 including the absorbent bodies 61 and 361 of Examples 1 and 2 are manufactured, the absorbent articles 61 and 361 exhibit excellent water absorption, so that in the absorbent articles 64 and 364, Is considered to exhibit excellent absorbency.
  • an absorbent article including an absorbent body in which the granular material is arranged
  • it is possible to prevent the granular material from falling off from the absorbent body, and the tactile sensation of the absorbent article. It has an excellent effect of preventing the decrease of Therefore, it is useful to widely apply as an absorbent article manufacturing method, an absorbent article manufacturing apparatus, and an absorbent article that can exert the significance of this effect.

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Abstract

A method for producing an absorbent article comprises: spreading a conveyed tow with a gas in at least one spreading chamber in a gas spreading apparatus; adding a granular material to the tow at a position located on the tow-conveying-direction upstream side relative to an outlet port of a spreading chamber located on the tow-conveying-direction most downstream side; and adhering a binder capable of binding a plurality of fibers contained in the tow to each other to the lower surface of the tow at a position located on the conveying-direction downstream side relative to the gas spreading apparatus.

Description

吸収性物品の製造方法、吸収性物品製造装置、吸収性物品、及び吸収体Absorbent article manufacturing method, absorbent article manufacturing apparatus, absorbent article, and absorbent body
　本発明は、吸収性物品の製造方法、吸収性物品製造装置、吸収性物品、及び吸収体に関する。 The present invention relates to an absorbent article manufacturing method, an absorbent article manufacturing apparatus, an absorbent article, and an absorbent body.
　紙おむつや尿漏れ防止用パッド等の吸収性物品は、例えば、水分を吸収する吸収体を備える。吸収体は、例えば特許文献１に開示されるように、捲縮されたセルロースアセテートトウを開繊することで製造される。開繊されたトウの複数本の繊維は、例えば、バインダにより結合される。 Absorbent articles such as disposable diapers and urine leakage prevention pads include, for example, an absorber that absorbs water. The absorber is manufactured by opening a crimped cellulose acetate tow, for example, as disclosed in Patent Document 1. A plurality of fibers of the opened tow are combined with, for example, a binder.
　吸収体の内部には、例えば、高吸水性樹脂（Super absorbent polymer : SAP）からなる粒状物が配置される。このような構造を有する吸収体を備える吸収性物品では、例えば、吸収体に重ねて配置されたトップシートの微細孔を通じて、水分が吸収体の内部に拡散し、粒状物に吸収される。 Inside the absorber, for example, granular materials made of super absorbent polymer (SAP) are placed. In the absorbent article including the absorbent body having such a structure, for example, moisture diffuses into the absorbent body through the fine pores of the top sheet arranged so as to overlap with the absorbent body, and is absorbed into the particulate matter.
特開２０１１－２４１４８７号公報JP, 2011-241487, A
　内部に粒状物を配置した吸収体を備える吸収性物品を製造する場合、粒状物が吸収体から脱落することで、吸収性物品の品質が低下するおそれがある。また、トウの複数本の繊維をバインダにより結合することで、吸収性物品の触感が低下するおそれがある。 When manufacturing an absorbent article that includes an absorbent body in which the granular material is arranged, the quality of the absorbent article may deteriorate due to the granular material falling off from the absorbent body. Further, by binding a plurality of fibers of the tow with a binder, the tactile sensation of the absorbent article may be deteriorated.
　そこで本発明は、内部に粒状物が配置された吸収体を備える吸収性物品を製造する場合において、吸収体から粒状物が脱落するのを防止すると共に、吸収性物品の触感の低下を防止することを目的としている。 Therefore, the present invention prevents the granular material from falling off from the absorbent body and prevents the tactile sensation of the absorbent article from decreasing when manufacturing an absorbent article including an absorbent body in which the granular material is arranged. The purpose is to
　上記課題を解決するために、本発明の一態様に係る吸収性物品製造方法は、搬送されるトウを、気体開繊装置の少なくとも１つの開繊室において、気体により開繊し、前記トウの搬送方向の最も下流側における前記開繊室の出口よりも前記搬送方向の上流側において、粒状物を前記トウに添加し、前記気体開繊装置よりも前記搬送方向の下流側において、前記トウに含まれる複数本の繊維を結合させるバインダを、前記トウの下面に添着する。 In order to solve the above problems, the absorbent article manufacturing method according to an aspect of the present invention, the tow to be conveyed, in at least one opening chamber of the gas opening device is opened by gas, the tow of the. On the upstream side in the transport direction from the outlet of the fiber opening chamber on the most downstream side in the transport direction, granular material is added to the tow, and on the downstream side in the transport direction from the gas fiber opening device, to the tow. A binder that binds a plurality of contained fibers is attached to the lower surface of the tow.
　上記方法によれば、搬送されるトウが、気体開繊装置の開繊室において気体により開繊される。また、搬送方向の最も下流側の開繊室の出口よりも搬送方向の上流側において、粒状物がトウに添加される。これにより、トウの複数本の繊維が立体的に絡み合いながら開繊されると共に繊維間隙に粒状物が分散される。よって、粒状物が内部に配置された吸収体を備える吸収性物品が得られる。 According to the above method, the tow to be conveyed is opened by the gas in the opening chamber of the gas opening device. Further, the particulate matter is added to the tow on the upstream side in the transport direction with respect to the outlet of the opening chamber on the most downstream side in the transport direction. As a result, a plurality of fibers of the tow are three-dimensionally entangled while being opened, and the particulate matter is dispersed in the fiber gap. Therefore, the absorbent article including the absorbent body in which the granular material is arranged can be obtained.
　また、気体開繊装置よりも搬送方向の下流側において、トウの複数本の繊維を結合させるバインダが、トウの下面に添着される。これにより、気体開繊装置により開繊されたトウの下側における複数本の繊維を結合できる。よって、トウの下側において、粒状物がトウの繊維間隙に保持され易くなる。従って、吸収体の下面からの粒状物の脱落を防止できる。 Also, a binder that binds multiple fibers of the tow is attached to the lower surface of the tow downstream of the gas opening device in the transport direction. Thereby, a plurality of fibers on the lower side of the tow opened by the gas opening device can be combined. Therefore, on the lower side of the tow, it becomes easy for the particulate matter to be held in the fiber gaps of the tow. Therefore, it is possible to prevent the particulate matter from falling off from the lower surface of the absorber.
　また、バインダをトウに対してトウの下面に局所的に添着することで、吸収体に複数本の繊維が結合されていない非結合領域を持たせることができる。よって、トウのふんわりとした触感を維持できる。従って、吸収性物品の触感の低下を防止できる。 Also, by locally attaching a binder to the toe on the lower surface of the tow, the absorbent body can have an unbonded region in which a plurality of fibers are not bonded. Therefore, the soft touch of the tow can be maintained. Therefore, it is possible to prevent the feel of the absorbent article from being deteriorated.
　前記気体開繊装置よりも前記搬送方向の前記下流側において、前記バインダを、更に前記トウの上面に添着してもよい。これにより、吸収体の上面からの粒状物の脱落を良好に防止できる。 The binder may be further attached to the upper surface of the tow on the downstream side of the gas opening device in the transport direction. Accordingly, it is possible to favorably prevent the particulate matter from falling off the upper surface of the absorber.
　前記気体開繊装置よりも前記搬送方向の前記下流側において、前記バインダを、更に前記トウの前記搬送方向に垂直な側面に添着してもよい。これにより、吸収体の前記搬送方向に垂直な側面からの粒状物の脱落を良好に防止できる。 The binder may be further attached to a side surface of the tow, which is perpendicular to the transport direction, on the downstream side of the gas opening device in the transport direction. Accordingly, it is possible to favorably prevent the particulate matter from falling off from the side surface of the absorber that is perpendicular to the transport direction.
　前記開繊室が内部に形成された筒状の開繊部と、前記開繊部に前記トウと前記気体とを導入する導入部とを有する前記気体開繊装置により、前記トウを開繊してもよい。これにより、吸収体からの粒状物の脱落を防止しつつ、導入部から筒状の開繊部の開繊室に導入される気体により、トウを効率よく嵩高に開繊できる。 The towing is opened by the gas opening device having a tubular opening part in which the opening chamber is formed, and an introducing part that introduces the tow and the gas into the opening part. May be. Thus, the tow can be efficiently and bulky opened by the gas introduced into the opening chamber of the tubular opening part from the introduction part while preventing the particulate matter from falling out of the absorber.
　前記導入部における前記気体の導入口よりも前記搬送方向の前記上流側において、前記粒状物を前記トウに添加してもよい。これにより、吸収体からの粒状物の脱落を防止しつつ、開繊室において開繊されるトウの全体に粒状物を均一に分散配置し易くすることができる。 The particulate matter may be added to the tow at the upstream side in the transport direction with respect to the gas introduction port in the introduction section. As a result, it is possible to easily disperse and disperse the particulate matter uniformly throughout the tow to be opened in the opening chamber while preventing the particulate matter from falling off from the absorbent body.
　前記開繊部の内周面と離隔した前記開繊部内の位置において、前記粒状物を前記トウに添加してもよい。これにより、吸収体からの粒状物の脱落を防止しつつ、開繊室において開繊されるトウの内部に粒状物を封入し易くすることができる。 The particulate matter may be added to the tow at a position in the opening part that is separated from the inner peripheral surface of the opening part. Accordingly, it is possible to prevent the particulate matter from falling off from the absorbent body and facilitate the encapsulation of the particulate matter inside the tow opened in the opening chamber.
　前記気体開繊装置を前記トウが下り勾配に通過可能に配置してもよい。これにより、吸収体からの粒状物の脱落を防止しつつ、気体開繊装置を傾斜させて配置することで、気体開繊装置の配置スペースを効率化できる。 The gas opening device may be arranged so that the tow can pass downhill. This makes it possible to increase the efficiency of the space for disposing the gas opening device by tilting the gas opening device while preventing the particulate matter from falling out of the absorber.
　前記開繊部の内部において、前記粒状物を前記トウに添加してもよい。これにより、吸収体からの粒状物の脱落を防止しつつ、粒状物をトウの内部に配置し易くすることができる。 The particles may be added to the tow inside the opening part. This makes it possible to facilitate the disposition of the particulate matter inside the tow while preventing the particulate matter from falling off from the absorbent body.
　前記気体開繊装置よりも前記搬送方向の前記上流側において、前記トウを複数対の開繊ロール対の周面に接触させて、前記トウを開繊してもよい。これにより、複数対の開繊ロール対により開繊されたトウを、気体開繊装置により、立体的に絡み合わせながら更に開繊できる。従って、トウを良好に開繊しつつ、吸収体からの粒状物の脱落を防止できる。 The tow may be opened by bringing the tow into contact with the peripheral surfaces of a plurality of opening roll pairs on the upstream side of the gas opening device in the conveying direction. Accordingly, the tow opened by the plurality of pairs of opening rolls can be further opened by the gas opening device while being entwined three-dimensionally. Therefore, it is possible to prevent the particulate matter from falling off from the absorbent body while opening the tow satisfactorily.
　液透過性を有する多孔質シートを、前記下面に前記バインダが添加された前記トウの上面に供給してもよい。これにより、吸収体からの粒状物の脱落を防止しつつ、吸収性物品の液戻りを良好に防止できる。 A liquid-permeable porous sheet may be supplied to the upper surface of the tow having the binder added to the lower surface. As a result, it is possible to favorably prevent the absorbent article from returning to the liquid while preventing the particulate matter from falling off from the absorbent body.
　本発明の別の態様に係る吸収性物品製造装置は、搬送されるトウを、少なくとも１つの開繊室において、気体により開繊する気体開繊装置と、前記トウの搬送方向の最も下流側における前記開繊室の出口よりも前記搬送方向の上流側において、粒状物を前記トウに添加する粒状物添加装置と、前記気体開繊装置よりも前記搬送方向の下流側において、前記トウに含まれる複数本の繊維を結合させるバインダを、前記トウの下面に添着するバインダ添着装置とを備え、前記気体開繊装置は、前記開繊室が内部に形成された筒状の開繊部と、前記開繊部に前記トウと前記気体とを導入する導入部とを有し、前記トウが下り勾配に通過可能に配置されている。 An absorbent article manufacturing apparatus according to another aspect of the present invention is a gas opening device that opens a tow to be conveyed by gas in at least one opening chamber, and a most downstream side in the conveying direction of the tow. Included in the tow on the upstream side in the transport direction from the outlet of the opening chamber, a granular material adding device for adding particulates to the tow, and on the downstream side in the transport direction from the gas opening device. A binder for binding a plurality of fibers to the lower surface of the tow, comprising a binder attachment device, the gas opening device, a tubular opening portion in which the opening chamber is formed, The opening section has an introduction section for introducing the tow and the gas, and the tow is arranged so that it can pass in a downward slope.
　上記構成によれば、粒状物が内部に配置された吸収体を備える吸収性物品が得られる。また、トウの下側において、粒状物がトウの繊維間隙に保持され易くなる。このため、吸収体からの粒状物の脱落を防止できる。また、トウのふんわりとした触感を維持できる。よって、吸収性物品の触感の低下を防止できる。 According to the above configuration, it is possible to obtain the absorbent article including the absorbent body in which the granular material is arranged. Further, on the lower side of the tow, it becomes easier for the particulate matter to be held in the fiber gaps of the tow. Therefore, it is possible to prevent the particulate matter from falling off from the absorber. In addition, the soft touch of the tow can be maintained. Therefore, it is possible to prevent the touch of the absorbent article from being deteriorated.
　また、トウが下り勾配に通過可能に配置気体開繊装置が配置されている。よって、気体開繊装置を傾斜させて配置できる。従って、気体開繊装置の配置スペースを効率化できる。 Also, a gas opening device is placed so that the tow can pass downhill. Therefore, the gas opening device can be arranged to be inclined. Therefore, the space for disposing the gas opening device can be made efficient.
　また開繊装置が、トウの搬送方向から見て高さ寸法が幅寸法よりも小さい流路断面形状を有する。よって、トウを拡幅するように開繊してトウの内部に粒状物を配置できる。従って、吸収体の設計自由度を向上できる。 Also, the fiber opening device has a flow channel cross-sectional shape in which the height dimension is smaller than the width dimension when viewed from the tow conveying direction. Therefore, it is possible to open the tow so as to widen it and arrange the granular material inside the tow. Therefore, the degree of freedom in designing the absorber can be improved.
　本発明の別の態様に係る吸収性物品は、開繊された複数本の繊維からなるトウと、前記トウの内部に配置された粒状物とを含むシート状の吸収体と、前記吸収体の一方の面側で前記吸収体に重ねて配置された液透過性を有する多孔質シートと、を備え、前記吸収体は、前記トウの複数本の繊維が結合された結合領域と、前記トウの複数本の繊維が結合されていない非結合領域と、を有し、前記結合領域が、前記吸収体の他方の面側で前記他方の面に沿って延びていると共に、前記非結合領域が、前記結合領域よりも前記吸収体の厚み方向内側に配置されている。 An absorbent article according to another aspect of the present invention is a tow made of a plurality of opened fibers, and a sheet-shaped absorbent body including a granular material arranged inside the tow, and the absorbent body. A porous sheet having a liquid permeability disposed on one side of the absorbent body in an overlapping manner, wherein the absorbent body has a bonding region in which a plurality of fibers of the tow are bonded, and the tow of the tow. And a non-bonding region in which a plurality of fibers are not bonded, the bonding region extends along the other surface on the other surface side of the absorber, the non-bonding area, It is arranged on the inner side in the thickness direction of the absorber with respect to the coupling region.
　上記構成によれば、吸収体の結合領域が、前記吸収体の他方の面側で前記他方の面に沿って延びている。このため、吸収体のトウの内部に配置された粒状物が、吸収体の他方の面側から脱落するのを防止できる。これにより、粒状物の脱落を防止した吸収性物品が得られる。 According to the above configuration, the binding region of the absorber extends along the other surface on the other surface side of the absorber. Therefore, it is possible to prevent the particulate matter arranged inside the tow of the absorbent body from falling off from the other surface side of the absorbent body. As a result, an absorbent article in which the particulate matter is prevented from falling off is obtained.
　また、吸収体の非結合領域が、前記結合領域よりも前記吸収体の厚み方向内側に配置されている。このため、トウのふんわりとした触感を維持できる。よって、当該吸収体を備える吸収性物品の触感が低下するのを防止できる。また、多孔質シートが吸収体の一方の面側で吸収体に重ねて配置されている。よって、多孔質シートを介して、吸収体に水分を迅速に吸収させることができる。 Moreover, the non-bonding region of the absorbent body is arranged inside the bonding region in the thickness direction of the absorber. Therefore, the soft touch of the tow can be maintained. Therefore, it is possible to prevent the tactile sensation of the absorbent article including the absorber from being lowered. In addition, the porous sheet is arranged so as to overlap with the absorbent body on one surface side of the absorbent body. Therefore, the absorbent body can quickly absorb the moisture through the porous sheet.
　前記結合領域は、更に、前記吸収体の前記一方の面側で前記一方の面に沿って延びていてもよい。これにより、吸収体のトウの内部に配置された粒状物が、吸収体の一方の面側から脱落するのを良好に防止できる。 The binding region may further extend along the one surface on the one surface side of the absorber. As a result, it is possible to favorably prevent the particulate matter disposed inside the tow of the absorbent body from falling off from one surface side of the absorbent body.
　前記結合領域は、更に、前記他方の面側から前記一方の面側に向けて、前記吸収体の側面に沿って延びていてもよい。これにより、吸収体のトウの内部に配置された粒状物が、吸収体の側面から脱落するのを良好に防止できる。 The coupling region may further extend along the side surface of the absorber from the other surface side toward the one surface side. Accordingly, it is possible to favorably prevent the particulate matter arranged inside the tow of the absorbent body from falling off from the side surface of the absorbent body.
　本発明の別の態様に係る吸収体は、開繊された複数本の繊維からなるトウと、前記トウの内部に配置された粒状物とを含んでシート状に形成され、前記トウの複数本の繊維が結合された結合領域と、前記トウの複数本の繊維が結合されていない非結合領域と、を有し、前記結合領域が、第１面側で前記第１面に沿って延びていると共に、前記非結合領域が、前記結合領域よりも厚み方向内側に配置されている。 An absorber according to another aspect of the present invention is formed into a sheet containing a tow consisting of a plurality of opened fibers and a granular material arranged inside the tow, and a plurality of the tows. And a non-bonded region in which a plurality of fibers of the tow are not bonded, the bond region extending along the first surface on the first surface side. In addition, the non-bonding region is arranged inside the bonding region in the thickness direction.
　上記構成によれば、吸収体の結合領域が、吸収体の第１面側で第１面に沿って延びている。このため、吸収体のトウの内部に配置された粒状物が、吸収体の第１面側から脱落するのを防止できる。これにより、粒状物の脱落を防止した吸収体が得られる。 According to the above configuration, the bonding area of the absorbent body extends along the first surface on the first surface side of the absorbent body. Therefore, it is possible to prevent the particulate matter arranged inside the tow of the absorbent body from falling off from the first surface side of the absorbent body. As a result, an absorbent body can be obtained in which the particulate matter is prevented from falling off.
　また、吸収体の非結合領域が、結合領域よりも吸収体の厚み方向内側に配置されている。このため、トウのふんわりとした触感を維持できる。よって、当該吸収体を備える吸収性物品を製造した場合、当該吸収性物品の触感が低下するのを防止できる。 Also, the non-bonding region of the absorber is arranged inside the absorber in the thickness direction of the absorber. Therefore, the soft touch of the tow can be maintained. Therefore, when an absorbent article including the absorber is manufactured, it is possible to prevent the tactile sensation of the absorbent article from being deteriorated.
　前記結合領域が、更に、第２面側で前記第２面に沿って延びていてもよい。これにより、吸収体のトウの内部に配置された粒状物が、吸収体の第２面側から脱落するのを良好に防止できる。 The bonding area may further extend along the second surface on the second surface side. Accordingly, it is possible to favorably prevent the particulate matter arranged inside the tow of the absorbent body from falling off from the second surface side of the absorbent body.
　前記結合領域が、更に、前記第１面側から前記第２面側に向けて、側面に沿って延びていてもよい。これにより、吸収体のトウの内部に配置された粒状物が、吸収体の側面から脱落するのを良好に防止できる。 The bonding region may further extend along the side surface from the first surface side toward the second surface side. Accordingly, it is possible to favorably prevent the particulate matter arranged inside the tow of the absorbent body from falling off from the side surface of the absorbent body.
　本発明によれば、内部に粒状物が配置された吸収体を備える吸収性物品を製造する場合において、吸収体から粒状物が脱落するのを防止できる。 According to the present invention, it is possible to prevent the granular material from falling off from the absorbent body when manufacturing an absorbent article including the absorbent body in which the granular material is arranged.
第１実施形態に係る吸収性物品製造装置の全体図である。It is an overall view of the absorbent article manufacturing apparatus according to the first embodiment. 図１の気体開繊装置と粒状物添加装置とのトウバンドの幅方向から見た鉛直断面図である。It is the vertical cross section seen from the width direction of the tow band of the gas opening device of FIG. 1, and a particulate matter addition device. 図１の開繊部の分解図である。It is an exploded view of the opening part of FIG. 第１実施形態に係る吸収体の搬送方向から見た鉛直断面図である。It is the vertical cross section seen from the conveyance direction of the absorber concerning a 1st embodiment. 第１実施形態に係る吸収性物品の搬送方向から見た鉛直断面図である。It is the vertical cross section seen from the conveyance direction of the absorptive article concerning a 1st embodiment. 第１実施形態の第１変形例に係る吸収体の搬送方向から見た鉛直断面図である。It is the vertical cross section seen from the conveyance direction of the absorber concerning the 1st modification of a 1st embodiment. 第１実施形態の第１変形例に係る吸収性物品の搬送方向から見た鉛直断面図である。It is the vertical cross section seen from the conveyance direction of the absorptive article concerning the 1st modification of a 1st embodiment. 第１実施形態の第２変形例に係る吸収体の搬送方向から見た鉛直断面図である。It is the vertical cross section seen from the conveyance direction of the absorber concerning the 2nd modification of a 1st embodiment. 第１実施形態の第２変形例に係る吸収性物品の搬送方向から見た鉛直断面図である。It is the vertical cross section seen from the conveyance direction of the absorptive article concerning the 2nd modification of a 1st embodiment. 第２実施形態に係る気体開繊装置と粒状物添加装置とのトウバンドの幅方向から見た鉛直断面図である。It is the vertical cross section seen from the width direction of the tow band of the gas opening device and the particulate matter addition device concerning a 2nd embodiment. 第２実施形態に係る吸収体の搬送方向から見た鉛直断面図である。It is the vertical cross section seen from the conveyance direction of the absorber concerning a 2nd embodiment. 第２実施形態に係る吸収性物品の搬送方向から見た鉛直断面図である。It is the vertical cross section seen from the conveyance direction of the absorptive article concerning a 2nd embodiment.
　以下、各実施形態について、図を参照して説明する。以下の記載において、上流側とは、トウバンド６０の搬送方向Ｐの上流側を指す。また下流側とは、トウバンド６０の搬送方向Ｐの下流側を指す。 Each embodiment will be described below with reference to the drawings. In the following description, the upstream side refers to the upstream side of the tow band 60 in the transport direction P. The downstream side refers to the downstream side of the tow band 60 in the transport direction P.
　（第１実施形態）
　図１は、第１実施形態に係る吸収性物品製造装置１（以下、製造装置１と称する。）の概略図である。図２は、図１の気体開繊装置９と粒状物添加装置１０とのトウバンドの幅方向から見た鉛直断面図である。図２では、粒状物添加装置１０の貯留部２３の図示は省略している。図３は、図１の開繊部２０の分解図である。 (First embodiment)
FIG. 1 is a schematic diagram of an absorbent article manufacturing apparatus 1 (hereinafter, referred to as manufacturing apparatus 1) according to the first embodiment. FIG. 2 is a vertical cross-sectional view of the gas opening device 9 and the particulate matter adding device 10 of FIG. 1 viewed from the width direction of the tow band. In FIG. 2, the illustration of the storage section 23 of the particulate matter addition device 10 is omitted. FIG. 3 is an exploded view of the spread part 20 of FIG.
　図１に示すように、製造装置１の近傍には、梱包容器Ｃが配置される。梱包容器Ｃ内には、複数本の繊維を含むトウバンド６０が、ベール状に折り畳まれた状態で圧縮されて梱包されている。図１の梱包容器Ｃは、断面構造を示している。 As shown in FIG. 1, a packaging container C is arranged near the manufacturing apparatus 1. In the packing container C, a tow band 60 including a plurality of fibers is compressed and packed in a bale-shaped folded state. The packaging container C of FIG. 1 has a sectional structure.
　トウバンド６０の繊維は、一例としてセルロースアセテートトウの長繊維であるが、これに限定されない。製造装置１では、トウバンド６０は、幅方向が水平に保たれながら、搬送方向Ｐに搬送される。 The fibers of the tow band 60 are, for example, long fibers of cellulose acetate tow, but are not limited thereto. In the manufacturing apparatus 1, the tow band 60 is transported in the transport direction P while keeping the width direction horizontal.
　製造装置１は、第１製造部２と第２製造部３とを備える。第１製造部２は、トウバンド６０により吸収体６１を製造する。第１製造部２は、第１拡幅装置４、ガイド５、第２拡幅装置６、第１開繊ロール対７、第２開繊ロール対８、気体開繊装置９、粒状物添加装置１０、バインダ添着装置１１、及び搬送ロール対１２を有する。 The manufacturing apparatus 1 includes a first manufacturing unit 2 and a second manufacturing unit 3. The first manufacturing unit 2 manufactures the absorber 61 using the tow band 60. The first manufacturing unit 2 includes a first widening device 4, a guide 5, a second widening device 6, a first opening roll pair 7, a second opening roll pair 8, a gas opening device 9, a particulate matter addition device 10, It has a binder attachment device 11 and a transport roll pair 12.
　第１拡幅装置４は、梱包容器Ｃ内から繰り上げられたトウバンド６０を幅方向に拡幅する。ガイド５は、第１拡幅装置４を通過したトウバンド６０を第２拡幅装置６へ向けてガイドする。第２拡幅装置６は、ガイド５を通過したトウバンド６０を更に幅方向に拡幅する。 The first widening device 4 widens the tow band 60 rolled up from inside the packaging container C in the width direction. The guide 5 guides the tow band 60 that has passed through the first widening device 4 toward the second widening device 6. The second widening device 6 further widens the tow band 60 that has passed through the guide 5 in the width direction.
　開繊ロール対７，８は、気体開繊装置９よりも上流側において、第２拡幅装置６を通過したトウバンド６０を更に開繊する。第２開繊ロール対８は、第１開繊ロール対７よりも下流側に配置されている。第１開繊ロール対７は、一対のロール１４，１５を有する。第２開繊ロール対８は、一対のロール１６，１７を有する。 The opening roll pairs 7 and 8 further open the tow band 60 that has passed through the second widening device 6, on the upstream side of the gas opening device 9. The second opening roll pair 8 is arranged on the downstream side of the first opening roll pair 7. The first opening roll pair 7 has a pair of rolls 14 and 15. The second opening roll pair 8 has a pair of rolls 16 and 17.
　第２拡幅装置６を通過したトウバンド６０は、一対のロール１４，１５の間と、一対のロール１６，１７の間とに挿通される。これによりトウバンド６０は、搬送方向Ｐに張力を与えられながら開繊される。第２開繊ロール対８を通過したトウバンド６０は、複数のガイドロール１３により案内されて気体開繊装置９に導入される。 The tow band 60 that has passed through the second widening device 6 is inserted between the pair of rolls 14 and 15 and between the pair of rolls 16 and 17. As a result, the tow band 60 is opened while tension is applied in the transport direction P. The tow band 60 that has passed through the second opening roll pair 8 is guided by the plurality of guide rolls 13 and introduced into the gas opening device 9.
　気体開繊装置９は、トウバンド６０を気体Ｇにより開繊する。気体開繊装置９は長尺状であり、トウバンド６０を搬送する搬送路９ａが内部に形成されている。本実施形態の気体開繊装置９は、上流側を下流側よりも上方にして傾斜配置されている。搬送路９ａは、上流側から下流側に向けて下り勾配に延びている。これにより、気体開繊装置９を例えば水平に配置した場合に比べて、気体開繊装置９の配置スペースが効率化されている。なお、気体開繊装置９の配置スペースが十分にある場合等には、気体開繊装置９は、例えば水平に配置してもよい。 The gas opening device 9 opens the tow band 60 with the gas G. The gas opening device 9 has a long shape, and a transport path 9a for transporting the tow band 60 is formed inside. The gas opening device 9 of this embodiment is arranged so that the upstream side is higher than the downstream side. The transport path 9a extends downward from the upstream side to the downstream side. As a result, the space for disposing the gas opening device 9 is more efficient than when the gas opening device 9 is arranged horizontally, for example. In addition, when the space for disposing the gas opening device 9 is sufficient, the gas opening device 9 may be arranged horizontally, for example.
　図１及び２に示すように、気体開繊装置９は、接続部１８、導入部１９、開繊部２０、及び滞留部２１を有する。搬送路９ａは、接続部１８の内部空間１８ａと、導入部１９の内部空間１９ａ及びトウバンド導入路１９ｂと、開繊部２０の内部空間２０ａと、滞留部２１の滞留室２１ａとを含む。 As shown in FIGS. 1 and 2, the gas opening device 9 has a connection part 18, an introduction part 19, an opening part 20, and a retention part 21. The transport path 9a includes an internal space 18a of the connection part 18, an internal space 19a of the introduction part 19 and a tow band introduction path 19b, an internal space 20a of the fiber opening part 20, and a retention chamber 21a of the retention part 21.
　接続部１８は、導入部１９の上流側に取り付けられて粒状物添加装置１０の供給管２４に接続されている。内部空間１８ａは、内部空間１９ａに接続されている。接続部１８は、第２開繊ロール対８を通過したトウバンド６０を内部空間１８ａを介して導入部１９内に導入する。また内部空間１８ａには、粒状物添加装置１０の供給管２４から粒状物５０が供給される。 The connection part 18 is attached to the upstream side of the introduction part 19 and is connected to the supply pipe 24 of the particulate matter addition device 10. The internal space 18a is connected to the internal space 19a. The connecting portion 18 introduces the tow band 60 that has passed through the second opening roll pair 8 into the introducing portion 19 via the internal space 18a. Further, the granular material 50 is supplied from the supply pipe 24 of the granular material adding device 10 to the internal space 18a.
　導入部１９は、開繊部２０にトウバンド６０と粒状物５０とを導入する。導入部１９は円筒状であり、搬送方向Ｐに延びる内部空間１９ａが形成されている。導入部１９は、内部空間１９ａにおいて、外部から導入される気体Ｇによりジェットを発生させる。これにより導入部１９は、トウバンド６０と粒状物５０とを混合する。 The introducing section 19 introduces the tow band 60 and the granular material 50 into the opening section 20. The introduction portion 19 has a cylindrical shape, and an internal space 19a extending in the transport direction P is formed. The introduction unit 19 generates a jet by the gas G introduced from the outside in the internal space 19a. Thereby, the introduction part 19 mixes the tow band 60 and the granular material 50.
　具体的に導入部１９は、管状の混合部４１と、ノズル部４２とを有する。混合部４１は、気体導入口４１ａ、トウバンド導入口４１ｂ、及びトウバンド排出口４１ｃを有する。気体導入口４１ａは、混合部４１の上流側における側部に配置されている。トウバンド導入口４１ｂは、混合部４１の上流端部に配置されている。トウバンド排出口４１ｃは、混合部４１の下流端部に配置されている。 Specifically, the introduction section 19 has a tubular mixing section 41 and a nozzle section 42. The mixing section 41 has a gas inlet 41a, a tow band inlet 41b, and a tow band outlet 41c. The gas inlet 41a is arranged on the upstream side of the mixing section 41. The tow band inlet 41b is arranged at the upstream end of the mixing section 41. The tow band outlet 41c is arranged at the downstream end of the mixing section 41.
　気体導入口４１ａは、加圧された気体Ｇ（一例として空気）を内部空間１９ａに導入する。本実施形態では、トウバンド６０に対する粒状物５０の添加位置は、気体導入口４１ａよりも上流側に位置している。トウバンド導入口４１ｂは、トウバンド６０を内部空間１９ａに導入する。混合部４１の下流端部は、開繊部２０に接続されている。 The gas inlet 41a introduces the pressurized gas G (air as an example) into the internal space 19a. In the present embodiment, the addition position of the particulate matter 50 to the tow band 60 is located upstream of the gas introduction port 41a. The tow band introduction port 41b introduces the tow band 60 into the internal space 19a. The downstream end of the mixing section 41 is connected to the fiber opening section 20.
　ノズル部４２は、内部空間１９ａの上流側に配置されている。ノズル部４２の下流先端には、上流側から下流側に向けて先細りのテーパー部４２ａが形成されている。テーパー部４２ａの外周面と対向する混合部４１の内周面は、テーパー部４２ａの外周面と離隔しながら、上流側から下流側に向けて縮径されている。これにより、テーパー部４２ａの外周面と混合部４１の内周面との間には、ジェット流路１９ｃが形成されている。ジェット流路１９ｃは、気体導入口４１ａから内部空間１９ａに導入される気体Ｇにより、ジェットを発生させる。 The nozzle portion 42 is arranged on the upstream side of the internal space 19a. A taper portion 42a that tapers from the upstream side toward the downstream side is formed at the downstream end of the nozzle portion 42. The inner peripheral surface of the mixing portion 41 facing the outer peripheral surface of the tapered portion 42a is reduced in diameter from the upstream side to the downstream side while being separated from the outer peripheral surface of the tapered portion 42a. As a result, a jet flow path 19c is formed between the outer peripheral surface of the tapered portion 42a and the inner peripheral surface of the mixing portion 41. The jet flow path 19c generates a jet by the gas G introduced into the internal space 19a from the gas introduction port 41a.
　ノズル部４２の内部には、トウバンド導入路１９ｂが形成されている。トウバンド導入路１９ｂの出口は、気体導入口４１ａよりも下流側に配置されている。トウバンド導入路１９ｂを通過したトウバンド６０は、ジェット流路１９ｃを通過した気体Ｇにより粒状物５０と混合されて内部空間１９ａを流通する。 A tow band introduction path 19b is formed inside the nozzle portion 42. The outlet of the tow band introduction path 19b is arranged on the downstream side of the gas introduction port 41a. The tow band 60 that has passed through the tow band introduction path 19b is mixed with the particulate matter 50 by the gas G that has passed through the jet flow path 19c and flows through the internal space 19a.
　なお気体Ｇは、空気以外の気体でもよい。また、トウバンド導入路１９ｂの出口と気体導入口４１ａとは、側方から見て重なる位置に配置されていてもよい。また、トウバンド導入路１９ｂの出口は、気体導入口４１ａよりも上流側に配置されていてもよい。 Note that the gas G may be a gas other than air. Further, the outlet of the tow band introducing passage 19b and the gas introducing port 41a may be arranged at a position overlapping with each other when viewed from the side. Further, the outlet of the tow band introducing passage 19b may be arranged on the upstream side of the gas introducing port 41a.
　開繊部２０は、トウバンド６０を開繊して成型すると共に、トウバンド６０の内部に粒状物５０を分散して配置する。図１及び３に示すように、開繊部２０は筒状であり、内部に搬送方向Ｐに延びる内部空間２０ａが形成されている。内部空間２０ａは、搬送方向Ｐから見て高さ寸法（トウバンド６０の厚み方向寸法）が幅寸法よりも小さい流路断面形状を有する少なくとも１つの開繊室（ここでは第１開繊室２０ｆ及び第２開繊室２０ｇ）を有する。開繊部２０は、搬送されるトウバンド６０を気体Ｇにより開繊すると共に、トウバンド６０と粒状物５０とを混合する。 The opening part 20 opens the tow band 60 to form it, and disperses and arranges the granular material 50 inside the tow band 60. As shown in FIGS. 1 and 3, the opening section 20 has a tubular shape, and an internal space 20a extending in the transport direction P is formed inside. The internal space 20a has at least one opening chamber (here, the first opening chamber 20f and the first opening chamber 20f, which has a flow passage cross-sectional shape in which the height dimension (thickness dimension of the tow band 60) is smaller than the width dimension when viewed from the transport direction P. It has a second opening chamber 20g). The opening section 20 opens the conveyed tow band 60 with the gas G and mixes the tow band 60 and the granular material 50.
　開繊部２０は、トウバンド６０の厚み方向に互いに組み合わされる第１部材４３と第２部材４４とを有する。第１部材４３と第２部材４４との互いの対向面の中央には、搬送方向Ｐに延びる溝部４３ａ、４４ａが形成されている。溝部４３ａ、４４ａが組み合わされることで、開繊部２０の内周面２０ｃが形成される。内周面２０ｃによって、内部空間２０ａが形成される。内部空間２０ａは、導入部１９の内部空間１９ａと連通している。 The opening unit 20 has a first member 43 and a second member 44 which are combined with each other in the thickness direction of the tow band 60. Grooves 43a and 44a extending in the transport direction P are formed at the centers of the surfaces of the first member 43 and the second member 44 facing each other. The inner peripheral surface 20c of the spread portion 20 is formed by combining the groove portions 43a and 44a. The inner space 20a is formed by the inner peripheral surface 20c. The internal space 20a communicates with the internal space 19a of the introduction part 19.
　開繊部２０は、上流部２０ｄと下流部２０ｅとを有する。上流部２０ｄ内には、流路２０ｂと第１開繊室２０ｆとが形成されている。流路２０ｂは、上流部２０ｄの上流側に位置している。 The opening section 20 has an upstream section 20d and a downstream section 20e. A flow path 20b and a first opening chamber 20f are formed in the upstream portion 20d. The flow path 20b is located on the upstream side of the upstream portion 20d.
　第１開繊室２０ｆは、上流域２０ｆ１と下流域２０ｆ２とを有する。上流域２０ｆ１の幅Ｗ１は、上流側から下流側に向けて漸増している。下流域２０ｆ２の幅Ｗ２は、上流側から下流側に向けて、上流域２０ｆ１の幅Ｗ１よりも急な割合で漸増している。これにより第１開繊室２０ｆの流路断面積は、上流側から下流側に向けて漸増している。 The first opening chamber 20f has an upstream area 20f1 and a downstream area 20f2. The width W1 of the upstream region 20f1 gradually increases from the upstream side to the downstream side. The width W2 of the downstream region 20f2 gradually increases from the upstream side to the downstream side at a rate faster than the width W1 of the upstream region 20f1. As a result, the flow passage cross-sectional area of the first opening chamber 20f gradually increases from the upstream side to the downstream side.
　このように開繊部２０は、搬送方向Ｐに内部空間２０ａの流路断面積が増加する領域を有する。トウバンド６０は、第１開繊室２０ｆ内を通過する際、第１開繊室２０ｆの形状に対応して膨張し、複数本の繊維を立体的に絡ませ合いながら開繊される。 As described above, the opening unit 20 has a region in which the flow passage cross-sectional area of the internal space 20a increases in the transport direction P. When the tow band 60 passes through the inside of the first opening chamber 20f, the tow band 60 expands according to the shape of the first opening chamber 20f and is opened while entwining a plurality of fibers three-dimensionally.
　下流部２０ｅの内部には、第２開繊室２０ｇが形成されている。第２開繊室２０ｇは、第１開繊室２０ｆと連続している。第２開繊室２０ｇの幅Ｗ３は、下流域２０ｆ２の出口における幅Ｗ２よりも拡幅されている。これにより、第２開繊室２０ｇの流路断面積は、下流域２０ｆ２の出口における流路断面積よりも拡大されている。 A second opening chamber 20g is formed inside the downstream portion 20e. The second opening chamber 20g is continuous with the first opening chamber 20f. The width W3 of the second opening chamber 20g is wider than the width W2 at the outlet of the downstream region 20f2. As a result, the flow passage cross-sectional area of the second opening chamber 20g is larger than the flow passage cross-sectional area at the outlet of the downstream region 20f2.
　第２開繊室２０ｇの幅Ｗ３は、搬送方向Ｐに一定である。トウバンド６０は、第２開繊室２０ｇ内を通過する際、複数本の繊維が更に開繊されて膨張する。なお第１開繊室２０ｆと第２開繊室２０ｇとの流路断面形状は、例えば、円形状であってもよい。 Width W3 of the second opening chamber 20g is constant in the transport direction P. When the tow band 60 passes through the second opening chamber 20g, the plurality of fibers are further opened and expanded. The flow passage cross-sectional shape of the first opening chamber 20f and the second opening chamber 20g may be circular, for example.
　滞留部２１は、開繊部２０の下流側に配置され、内部空間１９ａを通過したトウバンド６０を一時的に滞留させる。滞留部２１は、複数の長尺部材２２を有する。長尺部材２２の上流端部は、開繊部２０の下流端部に接続されている。滞留部２１には、複数の長尺部材２２により、搬送方向Ｐに延びる滞留室２１ａが形成されている。 The retention section 21 is arranged on the downstream side of the opening section 20, and temporarily retains the tow band 60 that has passed through the internal space 19a. The retention section 21 has a plurality of elongated members 22. The upstream end of the elongated member 22 is connected to the downstream end of the fiber opening unit 20. A retention chamber 21 a extending in the transport direction P is formed in the retention part 21 by the plurality of elongated members 22.
　図３に示すように、具体的に開繊部２０には、上流部２０ｄと下流部２０ｅとの境界部分に、搬送方向Ｐに垂直に延びる環状の端面２０ｈが形成されている。端面２０ｈは、第２開繊室２０ｇの周方向に延びると共に、長尺部材２２が差し込まれる複数の孔が設けられている。 As shown in FIG. 3, specifically, in the opening portion 20, an annular end surface 20h extending perpendicularly to the transport direction P is formed at the boundary between the upstream portion 20d and the downstream portion 20e. The end face 20h extends in the circumferential direction of the second opening chamber 20g and is provided with a plurality of holes into which the elongated members 22 are inserted.
　複数の長尺部材２２は、搬送路９ａの周方向で互いに間隔をおきながら搬送方向Ｐに延設されている。これにより、滞留室２１ａの流路断面形状は、長尺部材２２と端面２０ｈとの接続位置における内部空間２０ａの流路断面形状と相似している。従って、第１開繊室２０ｆと第２開繊室２０ｇとにより開繊されながら成型されたトウバンド６０の形状は、滞留室２１ａにおいても保持される。 The plurality of long members 22 are extended in the transport direction P at intervals in the circumferential direction of the transport path 9a. As a result, the flow passage cross-sectional shape of the retention chamber 21a is similar to the flow passage cross-sectional shape of the internal space 20a at the connection position between the elongated member 22 and the end surface 20h. Therefore, the shape of the tow band 60 molded while being opened by the first opening chamber 20f and the second opening chamber 20g is retained also in the retention chamber 21a.
　複数の長尺部材２２の下流端部は、上流側から下流側に進むにつれて互いに接近している。内部空間２０ａの出口を通過したトウバンド６０は、滞留室２１ａ内に一時的に滞留した後、滞留部２１を通過する。これにより滞留部２１は、トウバンド６０の膨張を抑制すると共に、トウバンド６０の嵩及び繊維密度を調整する。 The downstream ends of the plurality of long members 22 are closer to each other as they go from the upstream side to the downstream side. The tow band 60 that has passed through the outlet of the internal space 20a temporarily stays in the stay chamber 21a and then passes through the stay portion 21. As a result, the retention section 21 suppresses expansion of the tow band 60 and adjusts the bulk and fiber density of the tow band 60.
　粒状物添加装置１０は、搬送方向Ｐの最も下流側における開繊室（本実施形態では第２開繊室２０ｇ）の出口よりも搬送方向Ｐの上流側において、トウバンド６０に粒状物５０を添加する。粒状物５０は、吸水性を有し、一例として高吸水性樹脂を含む。 The particulate matter adding device 10 adds the particulate matter 50 to the tow band 60 on the upstream side in the transport direction P from the outlet of the opening chamber (the second opening chamber 20g in the present embodiment) on the most downstream side in the transport direction P. To do. The granular material 50 has a water-absorbing property, and contains a highly water-absorbing resin as an example.
　図１及び２に示すように、具体的に粒状物添加装置１０は、貯留部２３と供給管２４とを有する。貯留部２３には、粒状物５０が貯留される。供給管２４は、一端が貯留部２３に接続され、他端が搬送路９ａに接続されている。供給管２４は、前記一端から前記他端に向けて下り勾配に延びている。粒状物添加装置１０は、貯留部２３に貯留された粒状物５０を供給管２４に流通させる。これにより粒状物添加装置１０は、内部空間１９ａにおいてトウバンド６０に添加する。 As shown in FIGS. 1 and 2, specifically, the particulate matter addition device 10 has a storage part 23 and a supply pipe 24. The granular material 50 is stored in the storage unit 23. The supply pipe 24 has one end connected to the storage portion 23 and the other end connected to the transport path 9a. The supply pipe 24 extends downward from the one end toward the other end. The particulate matter addition device 10 causes the particulate matter 50 stored in the storage portion 23 to flow through the supply pipe 24. As a result, the particulate matter addition device 10 adds to the tow band 60 in the internal space 19a.
　粒状物添加装置１０は、一例として、トウバンド６０の下面６０ｂ側からトウバンド６０に粒状物５０を添加する。粒状物添加装置１０は、トウバンド６０の上面６０ａ側からトウバンド６０に粒状物５０を添加してもよい。 As an example, the granular material adding device 10 adds the granular material 50 to the tow band 60 from the lower surface 60b side of the tow band 60. The particulate matter addition device 10 may add the particulate matter 50 to the tow band 60 from the upper surface 60a side of the tow band 60.
　また粒状物添加装置１０は、気体開繊装置９よりも上流側（例えば、第２開繊ロール対８よりも下流側且つ気体開繊装置９よりも上流側）において、トウバンド６０に粒状物５０を添加するように配置されていてもよい。 In addition, the particulate matter adding device 10 includes the particulate matter 50 in the tow band 60 on the upstream side of the gas opening device 9 (for example, on the downstream side of the second opening roll pair 8 and on the upstream side of the gas opening device 9). May be arranged to add.
　バインダ添着装置１１は、気体開繊装置９よりも下流側において、トウバンド６０に含まれる複数本の繊維を結合させるバインダＢを、トウバンド６０の下面６０ｂに添着する。本実施形態のバインダ添着装置１１は、バインダＢを搬送方向Ｐから見たトウバンド６０の全周に添着する。ここで、トウバンド６０の下面６０ｂは、製造装置１により製造される吸収性物品６４（図４参照）の使用時において、水分と最初に接触するトウバンド６０の面（上面６０ａ）とは反対側の面である。 The binder impregnating device 11 impregnates, on the downstream side of the gas opening device 9, a binder B that binds a plurality of fibers contained in the tow band 60 to the lower surface 60b of the tow band 60. The binder attachment device 11 of the present embodiment attaches the binder B to the entire circumference of the tow band 60 as viewed in the transport direction P. Here, the lower surface 60b of the tow band 60 is on the side opposite to the surface (upper surface 60a) of the tow band 60 that first comes into contact with moisture when the absorbent article 64 (see FIG. 4) manufactured by the manufacturing apparatus 1 is used. Is a face.
　バインダ添着装置１１は、ケース２６、噴霧部２７、ガイド部２８、及び排出部２９を有する。噴霧部２７は、少なくとも１つのノズルを有する。噴霧部２７は、ケース２６内の下側からトウバンド６０の下面に向けて、ノズルより液状のバインダＢを噴霧可能に配置されている。 The binder attachment device 11 has a case 26, a spraying section 27, a guide section 28, and a discharging section 29. The spray unit 27 has at least one nozzle. The spray part 27 is arranged so that the liquid binder B can be sprayed from the nozzle toward the lower surface of the tow band 60 from the lower side of the case 26.
　本実施形態では、噴霧部２７は、複数のノズルを有する。噴霧部２７は、ケース２６内を通過するトウバンド６０の搬送方向Ｐから見た全周に向けて、ノズルより液状のバインダＢを噴霧可能に配置されている。バインダＢは、ケース２６から外部に延びるチューブ３０を通じて、噴霧部２７に供給される。 In this embodiment, the spray unit 27 has a plurality of nozzles. The spray part 27 is arranged so that the liquid binder B can be sprayed from the nozzle toward the entire circumference of the tow band 60 passing through the case 26 as viewed in the transport direction P. The binder B is supplied to the spray unit 27 through the tube 30 extending from the case 26 to the outside.
　ガイド部２８は、ケース２６の内部で上下方向に延びている。ガイド部２８は、トウバンド６０の上面６０ａと下面６０ｂとを支持して、トウバンド６０の姿勢を安定させる。排出部２９は、ケース２６の下側に配置され、噴霧部２７から噴霧された残余のバインダＢをケース２６外に排出する。 The guide portion 28 extends vertically inside the case 26. The guide portion 28 supports the upper surface 60a and the lower surface 60b of the tow band 60 to stabilize the attitude of the tow band 60. The discharging unit 29 is disposed below the case 26, and discharges the residual binder B sprayed from the spraying unit 27 to the outside of the case 26.
　バインダ添着装置１１では、トウバンド６０にバインダＢを添着させる際のトウバンド６０の密度、搬送速度、及び噴霧部２７からの単位時間当たりのバインダＢの噴霧量等の設定を変化させることにより、トウバンド６０の表面から所定の深さまでの領域にバインダＢを添着できる。 In the binder attachment device 11, by changing the density of the tow band 60 when the binder B is attached to the tow band 60, the transport speed, and the spray amount of the binder B per unit time from the spray unit 27, the toe band 60 is changed. The binder B can be attached to a region from the surface of the to a predetermined depth.
　トウバンド６０の表面からのバインダＢの添着領域の深さ寸法は、適宜設定が可能である。当該深さ寸法は、例えば、バインダ添着装置１１の出口から搬送ロール対１２のニップ点までの搬送領域におけるトウバンド６０の厚み寸法の０以上１／５以下の範囲の値であることが望ましく、０以上１／１０以下の範囲の値であることがより望ましく、０以上１／２０以下の範囲の値であることが一層望ましい。 The depth dimension of the binder B attachment area from the surface of the tow band 60 can be appropriately set. The depth dimension is, for example, preferably a value in the range of 0 or more and 1/5 or less of the thickness dimension of the tow band 60 in the transport region from the exit of the binder attachment device 11 to the nip point of the transport roll pair 12, and 0 It is more preferable that the value is in the range of 1/10 or more, and it is further preferable that the value is in the range of 0 or more and 1/20 or less.
　バインダ添着装置１１がトウバンド６０にバインダＢを添着する方法は限定されない。例えば、回転ブラシ、回転ロール、又は回転ディスクのいずれかを用いて、トウバンド６０にバインダＢを添着する方法でもよい。 The method by which the binder attachment device 11 attaches the binder B to the tow band 60 is not limited. For example, a method of attaching the binder B to the tow band 60 using any of a rotating brush, a rotating roll, or a rotating disk may be used.
　バインダＢとしては、例えば、トウバンド６０の繊維を溶解可能な各種可塑剤を利用できる。可塑剤としては、例えば、トリアセチン、トリエチレン、グリコールジアセテート、トリエチレングリコールジプロピオネート、ジブチルフタレート、ジメトキシエチルフタレート、クエン酸トリエチルエステル等のエステル系可塑剤を用いることができる。可塑剤は、トウバンド６０の種類に応じて適宜選択できる。 As the binder B, for example, various plasticizers capable of dissolving the fibers of the tow band 60 can be used. Examples of the plasticizer that can be used include ester plasticizers such as triacetin, triethylene, glycol diacetate, triethylene glycol dipropionate, dibutyl phthalate, dimethoxyethyl phthalate, and citric acid triethyl ester. The plasticizer can be appropriately selected depending on the type of the tow band 60.
　トウバンド６０がセルロースアセテートトウを含む場合、可塑剤として、トリアセチンやセルロース誘導体を用いることが望ましい。このような可塑剤は、揮発性を有する。このため、製造された吸収性物品６４中に可塑剤が残留するのを防止できる。これにより、吸収性物品６４の安全性を高めることができる。 When the tow band 60 contains cellulose acetate tow, it is desirable to use triacetin or a cellulose derivative as a plasticizer. Such a plasticizer is volatile. Therefore, it is possible to prevent the plasticizer from remaining in the manufactured absorbent article 64. Thereby, the safety of the absorbent article 64 can be improved.
　トウバンド６０に対するバインダＢの添着量は、適宜設定が可能である。当該添着量は、例えば、バインダＢを添着した直後におけるバインダＢ付トウバンド６０の総重量の１ｗｔ％以上５０ｗｔ％以下の範囲の値であることが望ましく、１ｗｔ％以上１０ｗｔ％以下の範囲の値であることが、より望ましい。 The amount of the binder B attached to the tow band 60 can be set appropriately. The impregnated amount is preferably, for example, a value in the range of 1 wt% to 50 wt% of the total weight of the tow band 60 with the binder B immediately after impregnating the binder B, and a value in the range of 1 wt% to 10 wt% inclusive. Is more desirable.
　搬送ロール対１２は、バインダ添着装置１１を通過したトウバンド６０を下流側に搬送する。トウバンド６０は、搬送ロール対１２が有する一対の搬送ロール３１，３２の間に挿通される。トウバンド６０は、一対の搬送ロール３１，３２により厚み方向に押圧される。これにより吸収体６１が製造される。吸収体６１は、第２製造部３に搬送される。 The pair of transfer rolls 12 transfers the tow band 60 that has passed through the binder attachment device 11 to the downstream side. The tow band 60 is inserted between the pair of transport rolls 31 and 32 included in the transport roll pair 12. The tow band 60 is pressed in the thickness direction by the pair of transport rolls 31 and 32. Thereby, the absorber 61 is manufactured. The absorber 61 is conveyed to the second manufacturing unit 3.
　第２製造部３は、吸収体６１に対して、通気性を有するバックシート６２と、液透過性を有するトップシート（多孔質シート）６３とを重ねて配置する。第２製造部３は、第１供給装置３５、搬送装置３６、第２供給装置３７、第３供給装置３８、成型ロール対３９、及び、貼着装置４０を有する。 The second manufacturing unit 3 arranges the back sheet 62 having air permeability and the top sheet (porous sheet) 63 having liquid permeability on the absorber 61 in an overlapping manner. The second manufacturing unit 3 includes a first supply device 35, a transport device 36, a second supply device 37, a third supply device 38, a molding roll pair 39, and a sticking device 40.
　第１供給装置３５は、第１シートロールＲ１から帯状のバックシート６２を繰り出して、所定の搬送ラインＬ上に供給する。搬送装置３６は、バックシート６２を搬送ラインＬに搬送する。バックシート６２の上には、吸収体６１が供給される。第２供給装置３７は、第２シートロールＲ２から帯状のトップシート６３を繰り出して、バックシート６２とトップシート６３との間で吸収体６１を挟み込むように、トップシート６３を搬送ラインＬ上に供給する。 The first feeding device 35 feeds the strip-shaped backsheet 62 from the first sheet roll R1 and feeds it onto a predetermined conveyance line L. The transport device 36 transports the back sheet 62 to the transport line L. The absorber 61 is supplied onto the back sheet 62. The second supply device 37 feeds the strip-shaped top sheet 63 from the second sheet roll R2, and puts the top sheet 63 on the transport line L so that the absorber 61 is sandwiched between the back sheet 62 and the top sheet 63. Supply.
　第３供給装置３８は、第２シートロールＲ２と成型ロール対３９との間において、トップシート６３に接着剤を供給する。成型ロール対３９は、重ねられたバックシート６２、吸収体６１、及びトップシート６３を成型しながら下流側に搬送する。貼着装置４０は、バックシート６２とトップシート６３とを厚み方向に押圧して、バックシート６２とトップシート６３とを、吸収体６１を挟んだ状態で、接着剤により貼着する。貼着装置４０により貼着されたバックシート６２、吸収体６１、及び、トップシート６３は、所定寸法に切断される。これにより、吸収性物品６４が製造される。なお吸収性物品６４は、用途に応じてバックシート６２を省略してもよい。 The third supply device 38 supplies the adhesive to the top sheet 63 between the second sheet roll R2 and the forming roll pair 39. The molding roll pair 39 conveys the stacked back sheet 62, absorber 61, and top sheet 63 to the downstream side while molding them. The sticking device 40 presses the back sheet 62 and the top sheet 63 in the thickness direction, and sticks the back sheet 62 and the top sheet 63 with an adhesive while sandwiching the absorber 61. The back sheet 62, the absorber 61, and the top sheet 63 that are stuck by the sticking device 40 are cut into predetermined dimensions. Thereby, the absorbent article 64 is manufactured. The backsheet 62 of the absorbent article 64 may be omitted depending on the application.
　本実施形態における吸収性物品６４の製造方法では、製造装置１を用いて、搬送されるトウバンド６０を、気体開繊装置９の少なくとも１つの開繊室において気体Ｇにより開繊し、最も下流側における開繊室の出口よりも上流側において、粒状物５０をトウバンド６０に添加し、気体開繊装置９よりも下流側において、バインダＢをトウバンド６０の下面６０ｂに添着する。 In the method for manufacturing the absorbent article 64 according to the present embodiment, the tow band 60 to be conveyed is opened by the gas G in at least one opening chamber of the gas opening device 9 by using the manufacturing device 1, and the most downstream side. The particulate matter 50 is added to the tow band 60 on the upstream side of the outlet of the fiber opening chamber in the above, and the binder B is attached to the lower surface 60b of the tow band 60 on the downstream side of the gas opening device 9.
　これにより、トウバンド６０の複数本の繊維が立体的に絡み合いながら開繊されると共に繊維間隙に粒状物５０が分散される。よって、粒状物５０が内部に配置された吸収体６１を備える吸収性物品６４が得られる。 With this, a plurality of fibers of the tow band 60 are opened while being three-dimensionally entangled with each other, and the granular material 50 is dispersed in the fiber gap. Therefore, the absorbent article 64 including the absorbent body 61 in which the granular material 50 is arranged is obtained.
　また、気体開繊装置９よりも下流側において、バインダＢがトウバンド６０の下面６０ｂに添着される。これにより、気体開繊装置９により開繊されたトウバンド６０の下側における複数本の繊維を結合できる。よって、トウバンド６０の下側において、粒状物５０がトウバンド６０の繊維間隙に保持され易くなる。従って、吸収体６１の下面からの粒状物５０の脱落を防止できる。 Further, the binder B is attached to the lower surface 60b of the tow band 60 on the downstream side of the gas opening device 9. Thereby, a plurality of fibers under the tow band 60 opened by the gas opening device 9 can be combined. Therefore, on the lower side of the tow band 60, the particulate matter 50 is easily held in the fiber gap of the tow band 60. Therefore, it is possible to prevent the granular material 50 from falling off from the lower surface of the absorber 61.
　また、バインダＢをトウバンド６０に対してトウバンド６０の下面６０ｂに局所的に添着することで、吸収体６１に後述する複数本の繊維が結合されていない非結合領域６０ｄを持たせることができる。よって、トウバンド６０のふんわりとした触感を維持できる。従って、吸収性物品６４の触感の低下を防止できる。 Further, the binder B is locally attached to the lower surface 60b of the tow band 60 with respect to the tow band 60, so that the absorbent body 61 can have an unbonded region 60d to which a plurality of fibers described later are not bonded. Therefore, the soft touch of the toe band 60 can be maintained. Therefore, it is possible to prevent the tactile sensation of the absorbent article 64 from being lowered.
　また、気体開繊装置９よりも下流側において、バインダＢをトウバンド６０の上面６０ａに添着する。これにより、吸収体６１の上面からの粒状物５０が脱落するのを良好に防止できる。 Further, the binder B is attached to the upper surface 60a of the tow band 60 on the downstream side of the gas opening device 9. Accordingly, it is possible to favorably prevent the particulate matter 50 from falling off the upper surface of the absorber 61.
　また、気体開繊装置９よりも下流側において、バインダＢをトウバンド６０の搬送方向Ｐに垂直な側面に添着する。これにより、吸収体６１の側面から粒状物５０が脱落するのを良好に防止できる。 Further, on the downstream side of the gas opening device 9, the binder B is attached to the side surface of the tow band 60 perpendicular to the conveying direction P. Thereby, it is possible to favorably prevent the granular material 50 from falling off from the side surface of the absorber 61.
　また、開繊部２０と導入部１９とを有する気体開繊装置９により、トウバンド６０を開繊する。これにより、吸収体６１からの粒状物５０の脱落を防止しつつ、気体Ｇによりトウバンド６０を効率よく嵩高に開繊できる。 Further, the tow band 60 is opened by the gas opening device 9 having the opening portion 20 and the introduction portion 19. Thereby, the tow band 60 can be efficiently and bulky opened by the gas G while preventing the granular material 50 from falling off from the absorber 61.
　また、導入部１９における気体導入口４１ａよりも上流側において、粒状物５０をトウバンド６０に添加する。これにより、吸収体６１からの粒状物５０の脱落を防止しつつ、開繊室において開繊されるトウバンド６０の全体に粒状物５０を均一に分散配置し易くすることができる。 Further, the particulate matter 50 is added to the tow band 60 on the upstream side of the gas introduction port 41a in the introduction section 19. As a result, it is possible to prevent the granular material 50 from falling off from the absorbent body 61, and to easily disperse the granular material 50 uniformly over the entire tow band 60 opened in the opening chamber.
　また開繊室は、搬送方向Ｐから見て、高さ寸法が幅寸法よりも小さい流路断面形状を有している。これにより、吸収体６１からの粒状物５０の脱落を防止しつつ、トウバンド６０を拡幅するように開繊してトウバンド６０の内部に粒状物５０を封入し易くすることができる。 Further, the opening chamber has a flow passage cross-sectional shape whose height dimension is smaller than its width dimension when viewed from the transport direction P. Thereby, it is possible to prevent the particulate matter 50 from falling off from the absorbent body 61, and to open the tow band 60 so as to widen the toe band 60 to facilitate the encapsulation of the particulate matter 50 inside the tow band 60.
　また、気体開繊装置９よりも上流側において、トウバンド６０を複数対の開繊ロール対７，８の周面に接触させて、トウバンド６０を開繊する。これにより、複数対の開繊ロール対７，８により開繊されたトウバンド６０を、気体開繊装置９により、立体的に絡み合わせながら更に開繊できる。従って、トウバンド６０を良好に開繊しつつ、吸収体６１からの粒状物５０の脱落を防止できる。 Further, on the upstream side of the gas opening device 9, the tow band 60 is brought into contact with the peripheral surfaces of the plurality of opening roll pairs 7 and 8 to open the tow band 60. As a result, the tow band 60 opened by the plurality of pairs of opening rolls 7 and 8 can be further opened by the gas opening device 9 while being entwined three-dimensionally. Therefore, it is possible to prevent the particulate matter 50 from falling off from the absorbent body 61 while satisfactorily opening the tow band 60.
　また、液透過性を有するトップシート６３を、下面６０ｂにバインダＢが添加されたトウバンド６０の上面６０ａに供給する。これにより、吸収体６１からの粒状物５０の脱落を防止しつつ、吸収性物品６４の液戻りを良好に防止できる。 Further, the liquid-permeable top sheet 63 is supplied to the upper surface 60a of the tow band 60 having the binder B added to the lower surface 60b. As a result, it is possible to prevent the granular material 50 from falling off from the absorbent body 61, and at the same time, prevent the liquid from returning to the absorbent article 64.
　図４は、第１実施形態に係る吸収体６１の搬送方向Ｐから見た鉛直断面図である。図５は、第１実施形態に係る吸収性物品６４の搬送方向Ｐから見た鉛直断面図である。図４に示すように、吸収体６１は、開繊された複数本の繊維からなるトウバンド６０と、トウバンド６０の内部に配置された粒状物５０とを含んでシート状に形成されている。吸収体６１は、ここではその内部全体に粒状物５０が均一に分散配置されている。 FIG. 4 is a vertical cross-sectional view of the absorbent body 61 according to the first embodiment viewed from the transport direction P. FIG. 5 is a vertical cross-sectional view of the absorbent article 64 according to the first embodiment seen from the transport direction P. As shown in FIG. 4, the absorbent body 61 is formed in a sheet shape including a tow band 60 formed by a plurality of opened fibers and a granular material 50 arranged inside the tow band 60. In the absorber 61, the granular material 50 is uniformly dispersed and arranged in the entire interior thereof.
　吸収体６１は、トウバンド６０の複数本の繊維が結合された結合領域６０ｃと、トウバンド６０の複数本の繊維が結合されていない非結合領域６０ｄとを有する。本実施形態では、バインダ添着装置１１により、搬送方向Ｐから見たトウバンド６０の全周にバインダＢが添着される。よって、搬送方向Ｐから見て、吸収体６１の全周に結合領域６０ｃが配置されると共に、吸収体６１の内部に非結合領域６０ｄが配置されている。 The absorber 61 has a bonding region 60c in which a plurality of fibers of the tow band 60 are bonded and an unbonding region 60d in which a plurality of fibers of the tow band 60 are not bonded. In the present embodiment, the binder attachment device 11 attaches the binder B to the entire circumference of the tow band 60 as viewed in the transport direction P. Therefore, as viewed in the transport direction P, the coupling region 60c is arranged on the entire circumference of the absorber 61, and the non-coupling region 60d is arranged inside the absorber 61.
　ここで、吸収体６１におけるトウバンド６０のトータルデニール（ＴＤ）は、適宜設定が可能である。一例として、トウバンド６０のトータルデニールは、１５０００以上５００００以下の範囲の値に設定できる。また、吸収体６１の坪量は、適宜設定が可能である。一例として、吸収体６１の坪量は、２０ｇ／ｍ２以上２００ｇ／ｍ２の範囲の値に設定できる。また、吸収体６１の厚み寸法（成型ロール対３９による圧縮後の厚み寸法）は、適宜設定が可能である。一例として、吸収体６１の厚み寸法は、５ｍｍ以上３０ｍｍ以下の範囲の値に設定できる。 Here, the total denier (TD) of the tow band 60 in the absorber 61 can be set appropriately. As an example, the total denier of the tow band 60 can be set to a value in the range of 15,000 or more and 50,000 or less. The basis weight of the absorber 61 can be set as appropriate. As an example, the basis weight of the absorber 61 can be set to a value in the range of 20 g / m 2 or more and 200 g / m 2 . Further, the thickness dimension of the absorber 61 (thickness dimension after compression by the pair of molding rolls 39) can be appropriately set. As an example, the thickness dimension of the absorber 61 can be set to a value in the range of 5 mm or more and 30 mm or less.
　なお、トウバンド６０に使用するトウ品種等によっては、トウバンド６０の復元力が高く、成型ロール対３９による圧縮成型前後において、吸収体６１の厚み寸法があまり変わらない場合がある。 Note that, depending on the tow type used for the tow band 60, the restoring force of the tow band 60 is high, and the thickness dimension of the absorber 61 may not change much before and after compression molding with the molding roll pair 39.
　図５に示すように、吸収性物品６４は、吸収体６１、バックシート６２、及びトップシート６３とを備える。吸収体６１は、図４に示すトウバンド６０に比べて、搬送ロール対１２により圧縮されたことにより厚み寸法が減少している。 As shown in FIG. 5, the absorbent article 64 includes an absorber 61, a backsheet 62, and a topsheet 63. The absorber 61 has a reduced thickness dimension as compared with the tow band 60 shown in FIG. 4 due to being compressed by the pair of transport rolls 12.
　トップシート６３は、吸収体６１の一方の面（上面）側で吸収体６１に重ねて配置されている。バックシート６２は、吸収体６１の他方の面（下面）側で吸収体６１に重ねて配置されている。 The top sheet 63 is arranged so as to overlap with the absorber 61 on one surface (upper surface) side of the absorber 61. The back sheet 62 is arranged on the other surface (lower surface) side of the absorber 61 so as to overlap with the absorber 61.
　吸収性物品６４では、吸収体６１の結合領域６０ｃが、吸収体６１の第１面（ここでは他方の面）側で他方の面に沿って延びている。これにより、吸収体６１のトウバンド６０の内部に配置された粒状物５０が、吸収体６１の他方の面側から脱落するのを防止できる。これにより、粒状物５０の脱落を防止した吸収性物品６４が得られる。 In the absorbent article 64, the bonding region 60c of the absorbent body 61 extends along the other surface on the first surface (here, the other surface) side of the absorbent body 61. Thereby, it is possible to prevent the granular material 50 arranged inside the tow band 60 of the absorber 61 from falling off from the other surface side of the absorber 61. Thereby, the absorbent article 64 in which the granular material 50 is prevented from falling off is obtained.
　また吸収性物品６４では、吸収体６１の結合領域６０ｃが、吸収体６１の第２面（ここでは前記一方の面）側で前記一方の面に沿って延びている。これにより、吸収体６１のトウバンド６０の内部に配置された粒状物５０が、吸収体６１の一方の面側から脱落するのを良好に防止できる。 In the absorbent article 64, the coupling region 60c of the absorbent body 61 extends along the one surface on the second surface (here, the one surface) side of the absorbent body 61. Accordingly, it is possible to favorably prevent the granular material 50 arranged inside the tow band 60 of the absorber 61 from falling off from one surface side of the absorber 61.
　また吸収性物品６４では、結合領域６０ｃが、他方の面側から一方の面側に向けて、吸収体６１の側面に沿って延びている。結合領域６０ｃは、一例として、吸収体６１の一部領域（幅方向両側の領域）において、吸収体６１の側面に沿って延びている。これにより、吸収体６１のトウバンド６０の内部に配置された粒状物５０が、吸収体６１の側面から脱落するのを良好に防止できる。 Further, in the absorbent article 64, the coupling region 60c extends along the side surface of the absorbent body 61 from the other surface side toward the one surface side. As an example, the coupling region 60c extends along the side surface of the absorber 61 in a partial region (regions on both sides in the width direction) of the absorber 61. Accordingly, it is possible to favorably prevent the granular material 50 arranged inside the tow band 60 of the absorber 61 from falling off from the side surface of the absorber 61.
　また吸収性物品６４では、吸収体６１の非結合領域６０ｄが、結合領域６０ｃよりも吸収体６１の厚み方向内側に配置されている。これにより、トウバンド６０のふんわりとした触感を維持できる。よって、当該吸収体６１を備える吸収性物品６４の触感が低下するのを防止できる。また、トップシート６３が吸収体６１の一方の面側で吸収体６１に重ねて配置されている。これにより、トップシート６３を介して、吸収体６１に水分を迅速に吸収させることができる。 In the absorbent article 64, the non-bonding region 60d of the absorbent body 61 is arranged on the inner side in the thickness direction of the absorbent body 61 than the bonding region 60c. As a result, the soft touch of the toe band 60 can be maintained. Therefore, it is possible to prevent the tactile sensation of the absorbent article 64 including the absorber 61 from being deteriorated. Further, the top sheet 63 is arranged so as to overlap the absorbent body 61 on one surface side of the absorbent body 61. Thereby, the absorbent body 61 can quickly absorb the moisture through the top sheet 63.
　また吸収性物品６４では、バックシート６２が吸収体６１の他方の面側で吸収体６１に重ねて配置されている。よって、吸収体６１に吸収された水分が吸収体６１から漏出するのをバックシート６２により防止できる。また、バックシート６２が通気性を発揮することにより、装着時にムレが発生するのを防止できる。 Further, in the absorbent article 64, the back sheet 62 is arranged so as to overlap the absorbent body 61 on the other surface side of the absorbent body 61. Therefore, the backsheet 62 can prevent the moisture absorbed by the absorber 61 from leaking from the absorber 61. In addition, since the back sheet 62 exhibits air permeability, it is possible to prevent stuffiness from occurring during mounting.
　以下、第１実施形態の変形例について説明する。図６は、第１実施形態の第１変形例に係る吸収体１６１の搬送方向Ｐから見た鉛直断面図である。図７は、第１実施形態の第１変形例に係る吸収性物品１６４の搬送方向Ｐから見た鉛直断面図である。 A modification of the first embodiment will be described below. FIG. 6 is a vertical cross-sectional view of the absorber 161 according to the first modified example of the first embodiment as seen from the transport direction P. FIG. 7 is a vertical cross-sectional view of the absorbent article 164 according to the first modified example of the first embodiment as seen from the transport direction P.
　図６及び７に示すように、吸収体１６１は、一方の面側と他方の面側とにのみ結合領域６０ｃが配置されている。吸収体１６１は、バインダ添着装置１１において、トウバンド６０の一方の面側と他方の面側とにのみバインダＢを添着するように噴霧部２７の噴霧方向を設定することで得られる。 As shown in FIGS. 6 and 7, the absorbent body 161 has the bonding regions 60c arranged only on one surface side and the other surface side. The absorber 161 is obtained by setting the spraying direction of the spraying section 27 so that the binder B is adhered only to one surface side and the other surface side of the tow band 60 in the binder attachment device 11.
　このような第１変形例においても、吸収体１６１の内部に配置された粒状物５０が、吸収体１６１の一方の面側と他方の面側とから脱落するのを結合領域６０ｃにより防止できる。よって、粒状物５０が吸収体１６１から脱落することで吸収性物品１６４の品質が低下するのを防止できる。 Also in such a first modified example, it is possible to prevent the granular material 50 arranged inside the absorbent body 161 from falling off from one surface side and the other surface side of the absorbent body 161 by the coupling region 60c. Therefore, it is possible to prevent the quality of the absorbent article 164 from being deteriorated due to the granular material 50 falling off from the absorber 161.
　図８は、第１実施形態の第２変形例に係る吸収体２６１の搬送方向Ｐから見た鉛直断面図である。図９は、第１実施形態の第２変形例に係る吸収性物品２６４の搬送方向Ｐから見た鉛直断面図である。 FIG. 8 is a vertical cross-sectional view of the absorber 261 according to the second modified example of the first embodiment as seen from the transport direction P. FIG. 9 is a vertical cross-sectional view of the absorbent article 264 according to the second modified example of the first embodiment as seen from the transport direction P.
　図８及び９に示すように、吸収体２６１は、他方の面側にのみ結合領域６０ｃが配置されている。吸収体２６１は、バインダ添着装置１１において、トウバンド６０の他方の面側にのみバインダＢを添着するように噴霧部２７の噴霧方向を設定することで得られる。 As shown in FIGS. 8 and 9, the absorbent body 261 has the bonding region 60c arranged only on the other surface side. The absorber 261 is obtained by setting the spray direction of the spray unit 27 so that the binder B is adhered only to the other surface side of the tow band 60 in the binder adhering device 11.
　変形例２におけるトウバンド６０に対するバインダＢの添着量は、適宜設定が可能である。当該添着量は、例えば、バインダＢを添着した直後のバインダＢ付トウバンド６０の重量の１ｗｔ％以上２５ｗｔ％以下の範囲の値であることが望ましく、１ｗｔ％以上５ｗｔ％以下の範囲の値であることが、より望ましい。 The amount of the binder B attached to the tow band 60 in Modification 2 can be set as appropriate. The attached amount is preferably a value in the range of 1 wt% to 25 wt% of the weight of the tow band 60 with the binder B immediately after the binder B is attached, and a value in the range of 1 wt% to 5 wt% inclusive, for example. Is more desirable.
　このような第２変形例においても、吸収体２６１の内部に配置された粒状物５０が、吸収体２６１の他方の面側から脱落するのを防止できる。また、吸収体２６１にトップシート６３を重ねた場合には、吸収体２６１の内部に配置された粒状物５０が吸収体２６１の一方の面側から脱落するのをトップシート６３により防止できる。よって、粒状物５０が吸収体２６１から脱落することで吸収性物品２６４の品質が低下するのをある程度まで防止できる。以下、第２実施形態について、第１実施形態との差異を中心に説明する。 Also in such a second modified example, it is possible to prevent the granular material 50 arranged inside the absorber 261 from falling off from the other surface side of the absorber 261. Further, when the top sheet 63 is stacked on the absorber 261, the top sheet 63 can prevent the granular material 50 arranged inside the absorber 261 from falling off from one surface side of the absorber 261. Therefore, it is possible to prevent the quality of the absorbent article 264 from being deteriorated to some extent by the granular material 50 falling off from the absorber 261. Hereinafter, the second embodiment will be described focusing on the differences from the first embodiment.
　（第２実施形態）
　図１０は、第２実施形態に係る気体開繊装置１０９と粒状物添加装置１１０とのトウバンドの幅方向から見た鉛直断面図である。図１０に示すように、第２実施形態の気体開繊装置１０９は、気体開繊装置９の接続部１８に相当する接続部を有していない。また、粒状物添加装置１１０の供給管１２４は、気体開繊装置１０９の開繊部１２０に接続されている。供給管１２４の下流端部１２４ａは、内部空間１２０ａに露出している。 (Second embodiment)
FIG. 10 is a vertical cross-sectional view of the gas opening device 109 and the particulate matter adding device 110 according to the second embodiment as seen from the width direction of the tow band. As shown in FIG. 10, the gas opening device 109 of the second embodiment does not have a connecting portion corresponding to the connecting portion 18 of the gas opening device 9. Further, the supply pipe 124 of the particulate matter addition device 110 is connected to the opening part 120 of the gas opening device 109. The downstream end portion 124a of the supply pipe 124 is exposed to the internal space 120a.
　下流端部１２４ａは、開繊部１２０の内周面１２０ｃと離隔した開繊部１２０内の位置において、搬送方向Ｐの下流側に向けて開口するように配置されている。本実施形態では、下流端部１２４ａは、内部空間１２０ａにおいて、搬送方向Ｐと平行に延びている。これにより第２実施形態では、開繊部１２０の内周面１２０ｃと離隔した開繊部１２０内の位置において、貯留部１２３に貯留された粒状物５０をトウバンド６０に添加する。第２実施形態では、第１実施形態よりも搬送方向Ｐの下流側において、開繊途中のトウバンド６０の内部に粒状物５０が添加される。 The downstream end portion 124a is arranged so as to open toward the downstream side in the transport direction P at a position in the opening portion 120 that is separated from the inner peripheral surface 120c of the opening portion 120. In the present embodiment, the downstream end portion 124a extends parallel to the transport direction P in the internal space 120a. As a result, in the second embodiment, the particulate matter 50 stored in the storage portion 123 is added to the tow band 60 at a position in the fiber opening part 120 that is separated from the inner peripheral surface 120c of the fiber opening part 120. In the second embodiment, the granular material 50 is added to the inside of the tow band 60 in the process of opening the fibers on the downstream side in the transport direction P as compared with the first embodiment.
　図１１は、第２実施形態に係る吸収体３６１の搬送方向Ｐから見た鉛直断面図である。図１２は、第２実施形態に係る吸収性物品３６４の搬送方向Ｐから見た鉛直断面図である。気体開繊装置１０９を通過して得られる吸収体３６１では、開繊途中のトウバンド６０の内部に粒状物５０が添加されたことで、粒状物５０がトウバンド６０の内部に封入されている。本実施形態では、一例として、搬送方向Ｐから見た吸収体３６１の全周に結合領域６０ｃが配置されると共に、結合領域６０ｃに囲まれた非結合領域６０ｄの内部に粒状物５０が分散配置されている。 FIG. 11 is a vertical cross-sectional view of the absorbent body 361 according to the second embodiment as viewed in the transport direction P. FIG. 12 is a vertical cross-sectional view of the absorbent article 364 according to the second embodiment as viewed in the transport direction P. In the absorber 361 obtained by passing through the gas opening device 109, the granular material 50 is added to the inside of the tow band 60 during opening, so that the granular material 50 is sealed inside the tow band 60. In the present embodiment, as an example, the binding region 60c is arranged on the entire circumference of the absorber 361 viewed from the transport direction P, and the particulate matter 50 is dispersed and arranged inside the non-binding region 60d surrounded by the binding region 60c. Has been done.
　このように第２実施形態では、開繊部１２０の内周面１２０ｃと離隔した開繊部１２０内の位置において、粒状物５０をトウバンド６０に添加する。これにより、吸収体３６１からの粒状物５０の脱落を防止しつつ、開繊室において開繊されるトウバンド６０の内部に粒状物５０を封入し易くすることができる。また吸収性物品３６４では、粒状物５０が吸収体３６１の表面に露出していない。このため、吸水後の触感を比較的良好に保つことができる。なお図１１及び１２では、粒状物５０は結合領域６０ｃの内部には分散配置されていない。しかしながら、若干の粒状物５０が結合領域６０ｃの内部に分散配置されていてもよい。 As described above, in the second embodiment, the granular material 50 is added to the tow band 60 at a position in the spread part 120 that is separated from the inner peripheral surface 120c of the spread part 120. This makes it possible to prevent the particulate matter 50 from falling off from the absorbent body 361, and at the same time, to facilitate the sealing of the particulate matter 50 inside the tow band 60 opened in the opening chamber. In the absorbent article 364, the granular material 50 is not exposed on the surface of the absorbent body 361. Therefore, the tactile sensation after absorbing water can be kept relatively good. Note that in FIGS. 11 and 12, the granular material 50 is not dispersed and arranged inside the joint region 60c. However, some of the particles 50 may be dispersed and arranged inside the coupling region 60c.
　また第２実施形態では、粒状物５０の添加位置（下流端部１２４ａの開口位置）は、搬送方向Ｐの最も下流側における開繊室の出口よりも上流側で、且つ、トウバンド導入口１４１ｂよりも下流側の位置であればよい。粒状物５０の添加位置は、例えば、内部空間１２０ａの搬送方向Ｐ中央よりも上流側でもよい。また、粒状物５０の添加位置は、内部空間１１９ａのトウバンド導入路１１９ｂよりも下流側でもよい。 In addition, in the second embodiment, the addition position of the particulate matter 50 (the opening position of the downstream end portion 124a) is upstream of the outlet of the fiber-opening chamber on the most downstream side in the transport direction P, and from the tow band introduction port 141b. May be located on the downstream side. The addition position of the granular material 50 may be, for example, on the upstream side of the center of the internal space 120a in the transport direction P. Further, the addition position of the particulate matter 50 may be on the downstream side of the tow band introduction passage 119b in the internal space 119a.
　ここで発明者らの検討によれば、気体開繊装置１０９の内部では、粒状物５０の添加位置を上流側に移動させるほど、気体開繊装置１０９を通過したトウバンド６０の内部に粒状物５０が均一に分散配置され易くなることが分かっている。 Here, according to the study by the inventors, in the gas opening device 109, as the addition position of the particles 50 is moved to the upstream side, the particles 50 are passed inside the tow band 60 passing through the gas opening device 109. Have been found to be easily distributed uniformly.
　また、第２実施形態の吸収体は、第１変形例のように、一方の面側と他方の面側とにのみ結合領域６０ｃが配置されていてもよい。また、第２実施形態の吸収体は、第２変形例のように、他方の面側にのみ結合領域６０ｃが配置されていてもよい。 Further, in the absorber of the second embodiment, the coupling region 60c may be arranged only on one surface side and the other surface side as in the first modification. Further, in the absorber of the second embodiment, the coupling region 60c may be arranged only on the other surface side as in the second modification.
　（評価試験）
　第１実施形態の製造装置１を用いて、吸収体６１を実施例１として製造した。また、第２実施形態の製造装置を用いて、吸収体３６１を実施例２として製造した。また、第１実施形態の製造装置１から添着装置１１を省略した装置を用い、吸収体を比較例１として製造した。第２実施形態の製造装置から添着装置１１を省略した装置を用い、吸収体を比較例２として製造した。 (Evaluation test)
The absorber 61 was manufactured as Example 1 using the manufacturing apparatus 1 of the first embodiment. Moreover, the absorber 361 was manufactured as Example 2 using the manufacturing apparatus of the second embodiment. Further, an absorber was manufactured as Comparative Example 1 by using an apparatus in which the impregnation apparatus 11 was omitted from the manufacturing apparatus 1 of the first embodiment. An absorbent body was manufactured as Comparative Example 2 by using a device obtained by omitting the attachment device 11 from the manufacturing device of the second embodiment.
　また、第１実施形態の製造装置１を用い、且つ、導入部１９のトウバンド導入口４１ｂよりも上流に添着装置１１を配置したこと以外は実施例１と同様の条件で、吸収体を比較例３として製造した。 In addition, a comparative example of an absorber was used under the same conditions as in Example 1 except that the manufacturing apparatus 1 of the first embodiment was used and the impregnation apparatus 11 was arranged upstream of the tow band introduction port 41b of the introduction unit 19. Manufactured as 3.
　第２実施形態の製造装置を用い、且つ、導入部１１９のトウバンド導入口１４１ｂ（図１０参照）よりも上流に添着装置１１を配置したこと以外は実施例２と同様の条件で、吸収体を比較例４として製造した。 An absorber was used under the same conditions as in Example 2 except that the manufacturing apparatus of the second embodiment was used and the impregnation apparatus 11 was arranged upstream of the tow band introduction port 141b (see FIG. 10) of the introduction unit 119. It was manufactured as Comparative Example 4.
　実施例１～２及び比較例１～４に用いたトウバンドは、幅寸法を１０ｃｍとし、長さ寸法３０ｃｍ当たりの重量を６ｇとした。また、トウバンドに対する粒状物５０の添加量は、長さ寸法３０ｃｍのトウバンド当たり２ｇとした。バインダＢとして、トリアセチンを用いた。 The tow bands used in Examples 1 and 2 and Comparative Examples 1 to 4 had a width dimension of 10 cm and a weight per length dimension of 30 cm of 6 g. The amount of the particulate matter 50 added to the tow band was 2 g per tow band having a length of 30 cm. As the binder B, triacetin was used.
　実施例１～２及び比較例１～４の吸収体の評価を以下の手順で行った。まず、実施例１～２及び比較例１～４の吸収体の表面を手で触ることにより、各吸収体の触感を評価した。 The absorbers of Examples 1 and 2 and Comparative Examples 1 to 4 were evaluated by the following procedure. First, the tactile sensation of each absorbent body was evaluated by touching the surfaces of the absorbent bodies of Examples 1 and 2 and Comparative Examples 1 to 4 with a hand.
　また、長尺状の吸収体の上面に、内径が６ｃｍのガラス筒を、開口を鉛直方向に向けて載置した。この状態で、青色に着色した５０ｍｌの生理食塩水を、ガラス筒の中に一度に注水した。 Also, a glass tube with an inner diameter of 6 cm was placed on the upper surface of the elongated absorber with the opening oriented vertically. In this state, 50 ml of physiological saline colored blue was poured into the glass tube at once.
　生理食塩水をガラス筒の中に全て注水してから３分経過後、吸収体の上面に形成された生理食塩水の液拡散長（縦拡散長及び横拡散長）を測定した。縦拡散長は、吸収体の長手方向とし、横拡散長は、吸収体の幅方向とした。これにより吸水性を評価した。ここで、液拡散長が大きいほど、吸収体に含まれる粒状物に生理食塩水を接触させ易くなる。このため、吸水性に優れると評価できる。 3 minutes after all the physiological saline was poured into the glass cylinder, the liquid diffusion length (longitudinal diffusion length and horizontal diffusion length) of the physiological saline formed on the upper surface of the absorber was measured. The vertical diffusion length was in the longitudinal direction of the absorber, and the horizontal diffusion length was in the width direction of the absorber. This evaluated the water absorption. Here, the larger the liquid diffusion length, the easier it is for the physiological saline to contact the particulate matter contained in the absorber. Therefore, it can be evaluated as having excellent water absorption.
　また、生理食塩水をガラス筒の中に注水してから５分経過後、乾燥重量を予め測定した複数枚の濾紙を重ねて吸収体に載置した。そして、最も上方の濾紙の上に３．５ｋｇの錘を載置した。生理食塩水をガラス筒の中に注水してから８分経過後、錘を取り外して複数枚の濾紙を取り出した。この濾紙を取り出した直後の吸収体の表面を触ることで、吸収体の液戻りを評価した。　また、製造装置における搬送路の同一位置（比較例１～２では滞留部２１よりも下流側であり、実施例１～２及び比較例３～４ではバインダ添着装置１１よりも下流側である搬送路の同一位置）において、搬送方向寸法が３０ｃｍの吸収体の試験片を採取した。この試験片の上下面の位置を一度だけ上下逆にする動作を行った。このときの動作前後において、試験片に含まれる粒状物量を測定し、前記動作により試験片から脱落した粒状物量の割合（重量％）を粒状物脱落率として算出した。これにより、吸収体の粒状物脱落率を評価した。この評価結果を表１に示す。表１には、最も優れる評価をＡとし、Ａに次ぐ評価をＢとし、Ｂに次ぐ評価をＣとして記載した。 Also, 5 minutes after the physiological saline was poured into the glass cylinder, a plurality of filter papers whose dry weights were measured in advance were stacked and placed on the absorber. Then, a weight of 3.5 kg was placed on the uppermost filter paper. Eight minutes after the physiological saline was poured into the glass tube, the weight was removed and a plurality of filter papers were taken out. Immediately after taking out this filter paper, the surface of the absorber was touched to evaluate the liquid return of the absorber. Further, the same position of the conveying path in the manufacturing apparatus (in the comparative examples 1 and 2, it is on the downstream side of the retention section 21, and in the examples 1 and 2 and the comparative examples 3 and 4, it is on the downstream side of the binder impregnating device 11) At the same position on the path), a test piece of an absorber having a dimension of 30 cm in the transport direction was taken. The operation of reversing the positions of the upper and lower surfaces of this test piece once was performed. Before and after the operation at this time, the amount of the particulate matter contained in the test piece was measured, and the ratio (% by weight) of the amount of the particulate matter dropped from the test piece by the above operation was calculated as the particulate matter dropout rate. Thereby, the dropout rate of the particulate matter of the absorber was evaluated. The evaluation results are shown in Table 1. In Table 1, the most excellent evaluation is A, the evaluation next to A is B, and the evaluation next to B is C.
Figure JPOXMLDOC01-appb-T000001
Figure JPOXMLDOC01-appb-T000001
　表１に示すように、比較例１及び２は、粒状物脱落率が比較的高いことが分かった。この原因としては、比較例１及び２ではトウバンド６０にバインダＢを添着しなかったため、粒状物５０が繊維間隙から脱落し易かったことが考えられる。 As shown in Table 1, Comparative Examples 1 and 2 were found to have a relatively high dropout rate of particulate matter. It is conceivable that the reason for this is that in Comparative Examples 1 and 2, since the binder B was not attached to the tow band 60, the particulate matter 50 was easily dropped from the fiber gap.
　また比較例２は、吸水性があまり優れないことが分かった。この原因としては、比較例２ではトウバンド６０にバインダＢを添着しなかったことにより、トウバンド６０の表面の繊維間隙の大きさがばらつき、各繊維間隙を通じてトウバンド６０の内部に封入された粒状物５０にまで水分が均一に到達しにくくなったことが考えられる。 It was also found that Comparative Example 2 did not have very good water absorption. The reason for this is that in Comparative Example 2, since the binder B was not attached to the tow band 60, the size of the fiber gaps on the surface of the tow band 60 was varied, and the granular material 50 enclosed inside the tow band 60 through each fiber gap. It is conceivable that it became difficult for the water to reach evenly.
　比較例３及び４は、触感が優れないことが分かった。この原因としては、比較例３及び４ではトウバンド６０に対するバインダＢの添着量が比較的多く、且つ、トウバンド６０の内部全体にバインダＢが添着されたため、トウバンド６０の全体で繊維が結合して、ごわごわした触感になったことが考えられる。 It was found that Comparative Examples 3 and 4 did not have excellent tactile sensation. The reason for this is that in Comparative Examples 3 and 4, the amount of the binder B attached to the tow band 60 was relatively large, and since the binder B was attached to the entire inside of the tow band 60, the fibers were bound throughout the tow band 60, It is possible that the texture has become stiff.
　実施例１及び２では、粒状物脱落率、触感、及び吸水性のいずれにおいても、比較例１～４に比べて優れていることが分かった。実施例１及び２では、吸収体６１のトウバンド６０が結合領域６０ｃと非結合領域６０ｄとを備えている。これにより、粒状物５０の脱落が結合領域６０ｃによって防止されると共に、触感が非結合領域６０ｄにおいて良好に保持されたことが考えられる。 It was found that Examples 1 and 2 are superior to Comparative Examples 1 to 4 in terms of the rate of dropout of particulate matter, the feel, and the water absorption. In Examples 1 and 2, the toe band 60 of the absorber 61 includes the binding region 60c and the non-binding region 60d. As a result, it is considered that the falling of the granular material 50 was prevented by the joining region 60c and the tactile sensation was well retained in the non-joining region 60d.
　また実施例１及び２では、結合領域６０ｃにより繊維間隙が維持されたことにより、粒状物５０がトウバンド６０の全体に配置されている場合（実施例１）や、粒状物５０がトウバンド６０の内部に偏在して配置されている場合（実施例２）のいずれの場合でも、良好な吸水性が発揮されたことが考えられる。 Further, in Examples 1 and 2, when the particulate matter 50 is arranged in the entire tow band 60 (Example 1) because the fiber gap is maintained by the bonding region 60c, the particulate matter 50 is inside the tow band 60. It is conceivable that good water absorption was exhibited in any of the cases of being unevenly distributed (Example 2).
　なお、実施例１～２及び比較例３及び４の粒状物脱落率については、トウバンド６０にバインダＢを添着した直後と、トウバンド６０にバインダＢを添着して所定時間経過後とで、顕著な差はみられなかった。 The dropout rates of the particulate matter of Examples 1 and 2 and Comparative Examples 3 and 4 were remarkable immediately after the binder B was attached to the tow band 60 and after a predetermined time had passed after the binder B was attached to the tow band 60. There was no difference.
　ここで実施例１及び２では、トウバンド６０の全周に結合領域６０ｃを配置した構成とした。しかしながら、第１実施形態の変形例１及び２に示した構成においても、実施例１及び２と同等程度の結果が得られるものと考えられる。 Here, in the first and second embodiments, the tow band 60 has the coupling region 60c arranged all around the circumference. However, even in the configurations shown in the modified examples 1 and 2 of the first embodiment, it is considered that the same degree of results as those of the examples 1 and 2 can be obtained.
　また、実施例１又は２の吸収体６１，３６１を備える吸収性物品６４，３６４を製造した場合、吸収体６１，３６１の上面はトップシート６３で覆われる。しかしながら、実施例１及び２の吸収体６１，３６１は優れた触感を有しているので、当該吸収体６１，３６１を備える吸収性物品６４，３６４の触感も優れたものになると考えられる。 When the absorbent articles 64 and 364 including the absorbers 61 and 361 of Example 1 or 2 are manufactured, the upper surfaces of the absorbers 61 and 361 are covered with the top sheet 63. However, since the absorbers 61 and 361 of Examples 1 and 2 have excellent tactile sensations, it is considered that the tactile sensations of the absorbent articles 64 and 364 including the absorbers 61 and 361 are also excellent.
　また、実施例１及び２の吸収体６１，３６１を備える吸収性物品６４，３６４を製造した場合、吸収体６１，３６１の優れた吸水性が発揮されることで、吸収性物品６４，３６４においても優れた吸収性が発揮されるものと考えられる。 In addition, when the absorbent articles 64 and 364 including the absorbent bodies 61 and 361 of Examples 1 and 2 are manufactured, the absorbent articles 61 and 361 exhibit excellent water absorption, so that in the absorbent articles 64 and 364, Is considered to exhibit excellent absorbency.
　本発明は、各実施形態に限定されるものではなく、本発明の趣旨を逸脱しない範囲で、その構成及び方法を変更、追加、又は削除できる。 The present invention is not limited to each embodiment, and its configuration and method can be changed, added, or deleted without departing from the spirit of the present invention.
　以上のように本発明によれば、内部に粒状物が配置された吸収体を備える吸収性物品を製造する場合において、吸収体から粒状物が脱落するのを防止できると共に、吸収性物品の触感の低下を防止できる優れた効果を有する。従って、この効果の意義を発揮できる吸収性物品の製造方法、吸収性物品製造装置、及び、吸収性物品として、広く適用すると有益である。 As described above, according to the present invention, in the case of manufacturing an absorbent article including an absorbent body in which the granular material is arranged, it is possible to prevent the granular material from falling off from the absorbent body, and the tactile sensation of the absorbent article. It has an excellent effect of preventing the decrease of Therefore, it is useful to widely apply as an absorbent article manufacturing method, an absorbent article manufacturing apparatus, and an absorbent article that can exert the significance of this effect.
　Ｂ　　バインダ
　Ｇ　　気体
　Ｐ　　搬送方向
　１　　吸収性物品製造装置
　７　　第１開繊ロール対（開繊ロール対）
　８　　第２開繊ロール対（開繊ロール対）
　９，１０９　　気体開繊装置
　１０，１１０　　粒状物添加装置
　１１　　バインダ添着装置
　１９，１１９　　導入部
　２０，１２０　　開繊部
　２０ｃ，１２０ｃ　　開繊部の内周面
　２０ｆ　　第１開繊室（開繊室）
　２０ｇ　　第２開繊室（開繊室）
　４１ａ　　気体導入口
　５０　　粒状物
　６０　　トウバンド（トウ）
　６０ｂ　　トウバンドの下面（トウの下面）
　６０ｃ　　結合領域
　６０ｄ　　非結合領域
　６１，１６１，２６１，３６１　　吸収体
　６３　　多孔質シート
　６４，１６４，２６４，３６４　　吸収性物品 B Binder G Gas P Conveying direction 1 Absorbent article manufacturing device 7 1st opening roll pair (opening roll pair)
8 2nd opening roll pair (opening roll pair)
9,109 Gas opening device 10,110 Granule adding device 11 Binder impregnating device 19,119 Introducing part 20,120 Opening part 20c, 120c Inner surface of opening part 20f First opening chamber (opening chamber)
20g 2nd opening room (opening room)
41a gas inlet 50 granular material 60 tow band (tow)
60b Toe band underside (toe underside)
60c Bonding area 60d Non-bonding area 61,161,261,361 Absorber 63 Porous sheet 64,164,264,364 Absorbent article

Claims (16)

  1. 　搬送されるトウを、気体開繊装置の少なくとも１つの開繊室において、気体により開繊し、
    　前記トウの搬送方向の最も下流側における前記開繊室の出口よりも前記搬送方向の上流側において、粒状物を前記トウに添加し、
    　前記気体開繊装置よりも前記搬送方向の下流側において、前記トウに含まれる複数本の繊維を結合させるバインダを、前記トウの下面に添着する、吸収性物品の製造方法。     The tow to be conveyed is opened by gas in at least one opening chamber of the gas opening device,
    On the upstream side in the transport direction with respect to the outlet of the opening chamber at the most downstream side in the transport direction of the tow, the particulate matter is added to the tow,
    A method for manufacturing an absorbent article, wherein a binder that binds a plurality of fibers contained in the tow is attached to a lower surface of the tow on a downstream side of the gas opening device in the transport direction.
  2. 　前記気体開繊装置よりも前記搬送方向の前記下流側において、前記バインダを、更に前記トウの上面に添着する、請求項１に記載の吸収性物品の製造方法。 The method for manufacturing an absorbent article according to claim 1, wherein the binder is further attached to the upper surface of the tow on the downstream side of the gas opening device in the transport direction.
  3. 　前記気体開繊装置よりも前記搬送方向の前記下流側において、前記バインダを、更に前記トウの前記搬送方向に垂直な側面に添着する、請求項１又は２に記載の吸収性物品の製造方法。 The method for manufacturing an absorbent article according to claim 1, wherein the binder is further attached to a side surface of the tow, which is perpendicular to the transport direction, on the downstream side of the gas opening device in the transport direction.
  4. 　前記開繊室が内部に形成された筒状の開繊部と、前記開繊部に前記トウと前記気体とを導入する導入部とを有する前記気体開繊装置により、前記トウを開繊する、請求項１～３のいずれか１項に記載の吸収性物品の製造方法。 The tow is opened by the gas opening device having a tubular opening part in which the opening chamber is formed and an introduction part for introducing the tow and the gas into the opening part. The method for manufacturing the absorbent article according to any one of claims 1 to 3.
  5. 　前記導入部における前記気体の導入口よりも前記搬送方向の前記上流側において、前記粒状物を前記トウに添加する、請求項４に記載の吸収性物品の製造方法。 The method for manufacturing an absorbent article according to claim 4, wherein the particulate matter is added to the tow on the upstream side in the transport direction with respect to the gas introduction port in the introduction section.
  6. 　前記開繊部の内周面と離隔した前記開繊部内の位置において、前記粒状物を前記トウに添加する、請求項４に記載の吸収性物品の製造方法。 The method for producing an absorbent article according to claim 4, wherein the particulate matter is added to the tow at a position in the opening part that is separated from the inner peripheral surface of the opening part.
  7. 　前記気体開繊装置を前記トウが下り勾配に通過可能に配置する、請求項１～６のいずれか１項に記載の吸収性物品の製造方法。 The method for manufacturing an absorbent article according to any one of claims 1 to 6, wherein the gas opening device is arranged so that the tow can pass in a downward slope.
  8. 　前記気体開繊装置よりも前記搬送方向の前記上流側において、前記トウを複数対の開繊ロール対の周面に接触させて、前記トウを開繊する、請求項１～７のいずれか１項に記載の吸収性物品の製造方法。 8. The tow is opened by bringing the tow into contact with the peripheral surfaces of a plurality of opening roll pairs on the upstream side of the gas opening device in the conveying direction. Item 2. A method for manufacturing an absorbent article according to item.
  9. 　液透過性を有する多孔質シートを、前記下面に前記バインダが添加された前記トウの上面に供給する、請求項１～８のいずれか１項に記載の吸収性物品の製造方法。 The method for manufacturing an absorbent article according to any one of claims 1 to 8, wherein a porous sheet having liquid permeability is supplied to the upper surface of the tow having the binder added to the lower surface.
  10. 　搬送されるトウを、少なくとも１つの開繊室において、気体により開繊する気体開繊装置と、
    　前記トウの搬送方向の最も下流側における前記開繊室の出口よりも前記搬送方向の上流側において、粒状物を前記トウに添加する粒状物添加装置と、
    　前記気体開繊装置よりも前記搬送方向の下流側において、前記トウに含まれる複数本の繊維を結合させるバインダを、前記トウの下面に添着するバインダ添着装置とを備え、
    　前記気体開繊装置は、前記開繊室が内部に形成された筒状の開繊部と、前記開繊部に前記トウと前記気体とを導入する導入部とを有し、前記トウが下り勾配に通過可能に配置されている、吸収性物品製造装置。     A gas opening device for opening the conveyed tow in at least one opening chamber with a gas;
    A particulate matter addition device for adding particulate matter to the tow, on the upstream side in the transport direction from the outlet of the opening chamber at the most downstream side in the transport direction of the tow,
    On the downstream side in the transport direction with respect to the gas opening device, a binder for binding a plurality of fibers contained in the tow, a binder affixing device for affixing to the lower surface of the tow,
    The gas opening device has a tubular opening part in which the opening chamber is formed, and an introducing part for introducing the tow and the gas into the opening part, and the tow descends. The absorbent article manufacturing apparatus is arranged so that it can pass through a gradient.
  11. 　開繊された複数本の繊維からなるトウと、前記トウの内部に配置された粒状物とを含むシート状の吸収体と、
    　前記吸収体の一方の面側で前記吸収体に重ねて配置された液透過性を有する多孔質シートと、を備え、
    　前記吸収体は、前記トウの複数本の繊維が結合された結合領域と、前記トウの複数本の繊維が結合されていない非結合領域と、を有し、
    　前記結合領域が、前記吸収体の他方の面側で前記他方の面に沿って延びていると共に、前記非結合領域が、前記結合領域よりも前記吸収体の厚み方向内側に配置されている、吸収性物品。     A tow consisting of a plurality of fibers that have been opened, and a sheet-shaped absorber including a granular material arranged inside the tow,
    A porous sheet having a liquid permeability which is arranged on the one side of the absorber so as to be superposed on the absorber,
    The absorbent body has a bonding region in which a plurality of fibers of the tow are bonded, and a non-bonding region in which a plurality of fibers of the tow are not bonded,
    The bonding region extends along the other surface on the other surface side of the absorber, and the non-bonding region is arranged more inside than the bonding region in the thickness direction of the absorber. Absorbent article.
  12. 　前記結合領域は、更に、前記吸収体の前記一方の面側で前記一方の面に沿って延びている、請求項１１に記載の吸収性物品。 The absorbent article according to claim 11, wherein the bonding region further extends along the one surface on the one surface side of the absorbent body.
  13. 　前記結合領域は、更に、前記他方の面側から前記一方の面側に向けて、前記吸収体の側面に沿って延びている、請求項１１又は１２に記載の吸収性物品。 The absorbent article according to claim 11 or 12, wherein the bonding region further extends along the side surface of the absorbent body from the other surface side toward the one surface side.
  14. 　開繊された複数本の繊維からなるトウと、前記トウの内部に配置された粒状物とを含んでシート状に形成され、
    　前記トウの複数本の繊維が結合された結合領域と、前記トウの複数本の繊維が結合されていない非結合領域と、を有し、
    　前記結合領域が、第１面側で前記第１面に沿って延びていると共に、前記非結合領域が、前記結合領域よりも厚み方向内側に配置されている、吸収体。     A tow consisting of a plurality of fibers that have been opened, and formed into a sheet containing a granular material arranged inside the tow,
    A binding region in which a plurality of fibers of the tow are bound, and a non-bonding region in which a plurality of fibers of the tow are not bound,
    The absorber in which the bonding region extends along the first surface on the first surface side, and the non-bonding region is arranged inside the bonding region in the thickness direction.
  15. 　前記結合領域が、更に、第２面側で前記第２面に沿って延びている、請求項１４に記載の吸収体。 The absorbent body according to claim 14, wherein the bonding region further extends along the second surface on the second surface side.
  16. 　前記結合領域が、更に、前記第１面側から前記第２面側に向けて、側面に沿って延びている、請求項１４又は１５に記載の吸収体。 The absorbent body according to claim 14 or 15, wherein the coupling region further extends along a side surface from the first surface side toward the second surface side.
PCT/JP2018/042621 2018-11-19 2018-11-19 Method for producing absorbent article, apparatus for producing absorbent article, absorbent article, and absorber WO2020105077A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014145139A (en) * 2013-01-29 2014-08-14 Daicel Corp Apparatus for manufacturing opened product
JP2018135618A (en) * 2017-02-23 2018-08-30 株式会社ダイセル Device for producing absorbent article and method for producing absorbent article

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2010304381A1 (en) * 2009-10-09 2012-05-10 Sumitomo Seika Chemicals Co., Ltd. Water-absorbent sheet
JP5526109B2 (en) * 2011-11-29 2014-06-18 株式会社ダイセル Equipment for producing long fiber tow spreads
CN107002315B (en) * 2014-12-09 2019-12-06 株式会社大赛璐 Tow opening device, fiber sheet manufacturing device using same, and fiber sheet manufacturing method
CN107735516A (en) * 2015-06-19 2018-02-23 株式会社大赛璐 The manufacture method of the fibrillation thing of the fibre bundle of strip
WO2017009882A1 (en) * 2015-07-15 2017-01-19 株式会社ダイセル Tow opening device, fiber sheet manufacturing device using same, and fiber sheet manufacturing method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014145139A (en) * 2013-01-29 2014-08-14 Daicel Corp Apparatus for manufacturing opened product
JP2018135618A (en) * 2017-02-23 2018-08-30 株式会社ダイセル Device for producing absorbent article and method for producing absorbent article

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