WO2019107333A1 - シート片の製造方法及びシート片の製造装置並びに吸収体の製造方法 - Google Patents

シート片の製造方法及びシート片の製造装置並びに吸収体の製造方法 Download PDF

Info

Publication number
WO2019107333A1
WO2019107333A1 PCT/JP2018/043499 JP2018043499W WO2019107333A1 WO 2019107333 A1 WO2019107333 A1 WO 2019107333A1 JP 2018043499 W JP2018043499 W JP 2018043499W WO 2019107333 A1 WO2019107333 A1 WO 2019107333A1
Authority
WO
WIPO (PCT)
Prior art keywords
sheet
narrow
cutting
cutting mechanism
manufacturing
Prior art date
Application number
PCT/JP2018/043499
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
到 高濱
知之 茂木
優喜 加藤
Original Assignee
花王株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 花王株式会社 filed Critical 花王株式会社
Priority to RU2020120948A priority Critical patent/RU2774288C2/ru
Priority to CN201880076656.8A priority patent/CN111417369B/zh
Publication of WO2019107333A1 publication Critical patent/WO2019107333A1/ja

Links

Images

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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/14—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter
    • B26D1/22—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter coacting with a movable member, e.g. a roller
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/25—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member
    • B26D1/34—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut
    • B26D1/40—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and coacting with a rotary member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
    • B65H35/04—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators
    • B65H35/08—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators from or with revolving, e.g. cylinder, cutters or perforators

Definitions

  • the present invention relates to a method of continuously producing a plurality of sheet pieces of the intended size, and a method of producing an absorbent containing the sheet pieces.
  • Patent Document 1 describes an absorbent body comprising hydrophilic fibers and non-woven fabric pieces as an aggregate of synthetic fibers, and, as a method of producing the absorbent body, bonding fibers to each other There is described a manufacturing method comprising the steps of: grinding a non-woven fabric having a three-dimensional structure to obtain non-woven fabric pieces by a cutter mill method; and mixing the non-woven fabric pieces with hydrophilic fibers.
  • Patent Document 2 uses a slitter device that performs a corresponding number of slit cuts on an object to be cut with a predetermined number of slitter blades provided on a shaft axis, in the direction perpendicular to the sheet conveying direction. It is described to cut and separate into multiple rows.
  • the present invention is directed to a first cutting process of obtaining a plurality of strip-like narrow sheets by transporting the strip-like material sheet in one direction and cutting the material sheet along the transport direction by the first cutting mechanism.
  • the second cutting mechanism is configured to include a cutter roll rotatably supported around an axis and having a cutter blade on a circumferential surface, and an anvil roll disposed to face the cutter roll.
  • the second cutting step is performed by introducing the narrow sheet between the cutter roll rotating about an axis and the anvil roll.
  • this invention is a manufacturing method of the absorber containing a several sheet piece. It is a manufacturing method of an absorber which has a process of carrying and accumulating a sheet piece manufactured by a manufacturing method of a sheet piece of the above-mentioned present invention by a flow of air to a predetermined accumulation part.
  • a first cutting mechanism for forming a plurality of strip-like narrow sheets by cutting the strip-like raw material sheet in one direction while cutting the raw-material sheet along the transport direction;
  • the narrow sheet formed on the downstream side of the conveying direction with respect to the first cutting mechanism and cut by the first cutting mechanism is cut in the conveying crossing direction intersecting the conveying direction to form a plurality of strip-shaped sheet pieces It is a manufacturing apparatus of a sheet piece provided with the 2nd cutting mechanism to form.
  • the second cutting mechanism includes a cutter roll rotatably supported about an axis and having a cutter blade on a circumferential surface, and an anvil roll disposed opposite to the cutter roll, and both rolls rotating about an axis
  • the narrow sheet introduced therebetween is configured to be cut in the conveyance cross direction. It is a manufacturing apparatus of a sheet piece in which the peripheral speed of the said cutter roll is quicker than the introduction speed of the said narrow sheet
  • FIG. 1 is a schematic perspective view of an embodiment of an absorbent body produced by the method for producing an absorbent body of the present invention.
  • FIG. 2 is a schematic perspective view of a manufacturing apparatus that can be used to carry out the method of manufacturing an absorbent according to the present invention.
  • FIG. 3 is a schematic configuration view of a second supply mechanism (sheet piece manufacturing apparatus) included in the manufacturing apparatus shown in FIG.
  • FIG. 4 is an explanatory view of a method of cutting a raw material sheet performed by the second supply mechanism shown in FIG. 3.
  • FIG. 5 is an explanatory view of a method of cutting a narrow sheet by a cutter roll in the second cutting mechanism shown in FIG. 3.
  • FIG. 3 is a schematic configuration view of a second supply mechanism (sheet piece manufacturing apparatus) included in the manufacturing apparatus shown in FIG.
  • FIG. 4 is an explanatory view of a method of cutting a raw material sheet performed by the second supply mechanism shown in FIG. 3.
  • FIG. 5 is an explanatory view of a method of cutting a narrow
  • FIG. 6 is a schematic configuration view of another embodiment of the second supply mechanism (sheet piece manufacturing apparatus) included in the manufacturing apparatus shown in FIG.
  • FIG. 7 is an explanatory view of a narrow sheet cutting method according to another embodiment of the cutter roll in the second cutting mechanism shown in FIG. 3;
  • Patent Document 1 when a nonwoven fabric is manufactured by crushing a nonwoven fabric using a cutter mill method, it is difficult to form a nonwoven fabric piece of a desired size, and it is possible to use the intended size. Variations occur. As a result, unevenness occurs in the structure of the absorbent body including the non-woven fabric piece formed, which may cause a feeling of foreign matter during use.
  • a method capable of continuously producing a plurality of sheet pieces of the intended size there is mentioned a method (cross cut) of cutting an object to be cut in two cutting directions crossing each other.
  • a plurality of strip-like narrow sheets are first subjected to slit cutting as the first cutting using a known slitter as described in Patent Document 2 with respect to the non-woven fabric as the raw material sheet.
  • the plurality of narrow sheets are supplied to a cutter roll provided with a cutter blade extending in the slit direction, that is, in the direction intersecting with the conveyance direction of the raw material sheet, and the second cutting is performed.
  • the present inventors variously examined such non-woven cloth cross-cuts, it is possible that cutting defects may occur particularly in the second cutting step of cutting a strip narrow sheet in the transport direction. It turned out to be.
  • the present invention includes a method for producing a sheet piece, an apparatus for producing the sheet piece, and a production method for the sheet piece, in which cutting defects of the sheet are suppressed and a plurality of sheet pieces of the intended size can be efficiently produced continuously.
  • the present invention relates to providing a method of producing an absorbent.
  • FIG. 1 shows an absorber 10 which is an embodiment of an absorber produced by the method for producing an absorber of the present invention.
  • the absorbent body 10 includes a plurality of sheet pieces 11 and hydrophilic fibers 12.
  • Each of the plurality of sheet pieces 11 is a fiber assembly in which a plurality of fibers are integrated. As described later, the sheet piece 11 is manufactured by so-called cross cutting in which a raw material sheet having a predetermined size is cut in two cutting directions crossing each other (see FIG. 4). Due to the method of manufacturing such a sheet piece, the absorbent body 10 has a point that the plurality of sheet pieces 11 contained therein have a certain size.
  • each of the plurality of sheet pieces 11 has a rectangular parallelepiped shape, has a rectangular surface in a plan view, and has a longitudinal direction and a lateral direction.
  • the size of the sheet piece 11 affects the characteristics such as the cushioning property of the absorbent body 10 to some extent.
  • the average length of the sheet piece 11 is preferably 0.3 mm or more and 30 mm or less, more preferably 1 mm or more and 15 mm or less, and particularly preferably 2 mm or more and 10 mm or less.
  • the “average length of the sheet piece” mentioned here means that, in the case where the sheet piece 11 has a rectangular parallelepiped shape, the four long sides (longer than the other sides) extending in the longitudinal direction (long-axis direction) When the sheet piece 11 is cubic, it means the average value of the length of all the sides which define the cube.
  • the average width of the sheet piece 11 is preferably 0.1 mm or more and 10 mm or less, more preferably 0.3 mm or more and 6 mm or less, and particularly preferably 0.5 mm or more and 5 mm or less.
  • the “average width of the sheet piece” as used herein refers to a plurality of short sides (other sides) extending in a direction (short direction) orthogonal to the longitudinal direction (long axis direction) when the sheet piece 11 has a rectangular parallelepiped shape. This means the average value of the lengths of relatively shorter sides), and in the case of the sheet piece 11 having a cubic shape, it is the same as the “average length of the sheet piece” described above. That is, when the sheet piece 11 has a cubic shape, the average length and the average width are the same.
  • the absorbent body 10 When the average length of the sheet piece 11 is 0.3 mm or more and / or the average width is 0.1 mm or more, a loose structure is easily formed in the absorbent body 10, and the cushioning property is excellent.
  • the absorbent body 10 when the absorbent body 10 is used by incorporating it into an absorbent article such as a disposable diaper when the average length of the sheet piece 11 is 30 mm or less and / or the average width is 10 mm or less, the wearer of the absorbent article It is hard to give a sense of incongruity due to the absorber 10, and furthermore, it is difficult to make the absorption performance uneven depending on the position in the absorber 10.
  • a non-water absorbing synthetic resin can be illustrated as a raw material of the constituent fiber of the sheet piece 11, For example, polyethylene, a polypropylene, a polyethylene terephthalate etc. are mentioned.
  • the constituent fibers of the sheet piece 11 are typically short fibers consisting of one or more of these synthetic resins.
  • hydrophilic fibers 12 used in combination with the sheet piece 11 in the absorbent body 10 various types of fibers conventionally used in absorbent bodies for absorbent articles can be used without particular limitation.
  • pulp fibers, Rayon fibers, cotton fibers and the like can be mentioned.
  • the absorbent body 10 may further contain a water absorbing polymer, and as the water absorbing polymer, various materials conventionally used for an absorbent for absorbent articles can be used without particular limitation. Moreover, in this embodiment, as shown in FIG. 1, although the some sheet piece 11 is uniformly disperse
  • the absorbent body 10 is suitably used as a component of an absorbent article.
  • the absorbent articles mentioned here widely include articles used for absorbing body fluid (urine, soft stools, menstrual blood, sweat, etc.) discharged from the human body, and so-called unfolded disposable diapers having a fastening tape, pants type Disposable diapers, sanitary napkins, sanitary shorts, incontinence pads and the like.
  • the absorbent in the absorbent article typically comprises a liquid absorbent absorbent core and a liquid permeable core wrap sheet that covers the outer surface of the absorbent core, and the absorbent 10 is this absorbent. It can be used as a core.
  • As the core wrap sheet paper, non-woven fabric or the like can be used.
  • the absorber 10 does not need to contain a core wrap sheet, and in that case, an absorbent core is used for an absorbent article as the absorber 10 as it is.
  • An absorbent article having an absorbent body 10 typically has a liquid-permeable top sheet which can come into contact with the wearer's skin when worn, a liquid-impermeable to water-repellent back sheet, and a gap between these both sheets. And a liquid-retaining absorber disposed in between.
  • As the surface sheet various non-woven fabrics or porous synthetic resin sheets can be used, and as the back surface sheet, a synthetic resin film made of polyethylene, polypropylene, polyvinyl chloride or the like, or a composite of a synthetic resin film and non-woven fabric Materials and the like can be used.
  • the absorbent article may further include various members according to the specific use of the absorbent article. Such components are known to those skilled in the art. For example, when the absorbent article is applied to a disposable diaper or a sanitary napkin, one or two or more pairs of three-dimensional guards can be disposed on the left and right sides of the top sheet.
  • FIGS. 2 and 3 show a manufacturing apparatus (stacking apparatus) 1 that can be used to carry out the above-described method of manufacturing the absorbent body 10.
  • the method of manufacturing the absorbent body 10 includes the step of manufacturing the sheet piece 11 and the accumulation step of conveying and accumulating the plurality of sheet pieces 11 manufactured in the manufacturing step to a predetermined accumulation portion by an air flow.
  • the manufacturing apparatus 1 includes a rotating drum 2 in which an accumulation recess 22 as an accumulation portion is formed on an outer peripheral surface 2 f, and a duct 3 having a flow passage 30 for conveying the raw material of the absorber 10 on the outer peripheral surface 2 f.
  • the raw material carried on the air flow (vacuum air) generated in the flow path 30 by suction from the inside of the rotary drum 2 while rotating the rotary drum 2 around the rotary shaft along the drum circumferential direction 2Y Is made to be accumulated in the accumulation recess 22.
  • a first supply mechanism 4 and a second supply mechanism 5 are respectively connected to the duct 3 as a supply mechanism of the raw material (fiber material) of the absorber 10.
  • a vacuum conveyor 6 which receives the accumulated material of the raw material released from the accumulation recess 22, ie, the absorbent body 10 and conveys it to the next process.
  • a pressing belt 7 for pressing the accumulated material in the accumulation recess 22 is disposed along the outer peripheral surface 2 f of the rotary drum 2.
  • the presser belt 7 is an endless, breathable or non-breathable belt, and is stretched over the rolls 71 and 72 so as to move along with the rotation of the rotary drum 2.
  • the rotary drum 2 includes a cylindrical drum main body 20 made of a rigid metal body and an outer peripheral member 21 disposed on the outer peripheral portion of the drum main body 20 so as to form an outer peripheral surface 2 f of the rotary drum 2. ing.
  • the outer peripheral member 21 receives power from a prime mover such as a motor and rotates in the direction R1 along the drum circumferential direction 2Y about the horizontal rotation axis as a rotation center, but the drum main body disposed inside the outer peripheral member 21 20 is fixed and does not rotate. Both ends in the drum width direction Y of the drum main body 20 are airtightly sealed by a side wall not shown and a sealing material such as felt.
  • the outer peripheral member 21 is a bottom of the accumulation recess 22, that is, the air permeable porous plate 23 which forms the pile surface of the raw material, and the air permeability which forms a portion other than the pile surface in the outer peripheral surface 2 f of the rotary drum 2.
  • the pattern forming plate 24 has an annular shape extending continuously along the entire length in the drum circumferential direction 2Y, and a pair of pattern forming plates 24 is provided at both ends in the rotational axis direction of the rotary drum 2. Between the plates 24, 24, the porous plate 23 is located.
  • the porous plate 23 transmits an air flow generated by suction from the inside of the apparatus (inward of the rotating drum 2) to the outside of the apparatus (outward of the rotating drum 2), and is carried on the air flow It is a breathable plate that holds raw materials without permeation and allows only air to permeate.
  • a large number of suction holes penetrating the porous plate 23 in the thickness direction are formed in the entire porous plate 23, and the accumulation recess 22 is located on the space maintained at a negative pressure in the rotary drum 2.
  • the suction holes function as air flow passage holes.
  • porous plate 23 for example, a mesh plate made of metal or resin, or a plate made of metal or resin, in which a large number of pores are formed by etching, punching or the like can be used.
  • pattern forming plate 24 for example, a plate made of metal such as stainless steel or aluminum or resin can be used.
  • the inside of the drum main body 20 is divided into a plurality of spaces A, B, and C in the drum circumferential direction 2Y.
  • a pressure reducing mechanism (not shown) for reducing the pressure inside is connected to the drum body 20.
  • the decompression mechanism includes an exhaust pipe (not shown) connected to a side wall (not shown) constituting the drum main body 20 and an exhaust fan (not shown) connected to the exhaust pipe.
  • the plurality of spaces A, B and C in the drum main body 20 are independent of each other, and the negative pressure (suction force) of the plurality of spaces can be independently adjusted by the pressure reducing mechanism.
  • the rotary drum 2 has a predetermined range in the drum circumferential direction 2Y, specifically, a space A in which the outer peripheral portion is covered with the duct 3, a stacking zone in which stacking of raw materials can be performed by suction from inside. It is done.
  • the outer peripheral member 21 is rotated around the rotation axis in a state in which the space A is maintained at a negative pressure, the accumulation concave 22 formed in the outer peripheral member 21 passes over the space A.
  • the negative pressure in the space A acts on the bottom (the porous plate 23), and suction of air is performed through a large number of suction holes formed in the bottom.
  • the space B of the rotary drum 2 is normally set to a negative pressure or pressure (zero atmospheric pressure) weaker than the space A, and the space C is the transfer position of the fiber material in the accumulation recess 22 and its The pressure is set to zero or positive pressure because it is an area including front and back.
  • the vacuum conveyor 6 is disposed at a position opposed to the endless air-permeable belt 63 stretched over the driving roll 61 and the driven roll 62 and the area where the space C of the rotary drum 2 exists with the air-permeable belt 63 interposed therebetween. And a vacuum box 64.
  • a band-shaped core wrap sheet 10W is introduced onto the air-permeable belt 63, and the absorbent material 10 as a piled fiber released from the accumulation recess 22 is delivered onto the core wrap sheet 10W.
  • the duct 3 extends continuously from the first supply mechanism 4 to the rotary drum 2, and includes an opening on the upstream side and a downstream side (rotary drum 2 side) in the raw material supply direction. There is an opening, and a flow path 30 of the raw material exists between these two openings.
  • the top plate of the duct 3 is provided with a polymer scattering pipe 31 for supplying water absorbing polymer particles to the flow path 30. When the absorbent body 10 contains water absorbing polymer particles, this polymer scattering pipe 31 is used .
  • the absorbent body 10 contains two types of sheet pieces 11 and hydrophilic fibers 12 as a fiber material, and the manufacturing apparatus 1 correspondingly ducts the hydrophilic fibers 12 as a fiber material supply mechanism.
  • a first supply mechanism 4 hydrophilic fiber manufacturing device
  • a second supply mechanism 5 sheet piece manufacturing device
  • the first supply mechanism 4 (hydrophilic fiber producing device) is disposed at the opening of the duct 3 opposite to the rotary drum 2 side.
  • the first feeding mechanism 4 is configured in the same manner as the feeding mechanism of the fiber material in the fiber laying device such as this type of pulp fiber, and is disintegrated to break up the strip-like raw material sheet 10as in which a plurality of hydrophilic fibers 12 are accumulated.
  • a fiber machine 41 is provided.
  • the 2nd supply mechanism 5 (sheet piece manufacturing apparatus) is expanded and schematically shown by FIG.
  • the second supply mechanism 5 is an apparatus for manufacturing and supplying the rectangular or cubic sheet piece 11, and as shown in FIG. 4, a strip-like raw material sheet 10bs composed of constituent fibers (synthetic fibers) of the sheet piece 11 is shown.
  • a mechanism 5B As raw material sheet 10bs, the nonwoven fabric by various manufacturing methods can be illustrated.
  • the “first direction D1”, which is one of the cutting directions of the raw material sheet 10bs, corresponds to the conveyance direction MD of the raw material sheet 10bs in the second supply mechanism 5, and the angle between the first direction D1 and the conveyance direction MD. Is less than 45 degrees.
  • the first direction D1 coincides with the transport direction MD, and the angle between the two directions D1 and MD is zero.
  • the second direction D2 which is another one of the cutting direction of the raw material sheet 10bs is a direction intersecting the first direction D1, and in the illustrated embodiment, the first direction D1 (conveying direction MD)
  • the second direction D2 is orthogonal to the second direction D2, and the angle between the two directions D1 and D2 is 90 degrees.
  • a direction indicated by a code CD in FIG. 2 is a conveyance orthogonal direction orthogonal to the conveyance direction MD, and is a direction parallel to the rotation axes of various rolls included in the rotary drum 2 and the manufacturing apparatus 1. In the form, it coincides with the width direction (direction orthogonal to the longitudinal direction) of each of the long band shaped absorbent material 10 as the accumulated fiber and the long band shaped raw material sheet 10as, 10bs, and also coincides with the second direction D2. There is.
  • the first cutting mechanism 5A includes a cutter roll 51 and an anvil roll 52, as shown in FIGS.
  • the two rolls 51 and 52 each have a substantially cylindrical shape, are rotatably supported about the rotation axis, and are arranged to rotate in opposite directions with the circumferential surfaces facing each other while aligning their rotation axes in parallel. It is done. While the cutter blade 51C is disposed on the circumferential surface of the cutter roll 51, the circumferential surface of the receiving roller 52 is smooth because the cutter blade is not disposed.
  • the cutter blade 51C of the cutter roll 51 corresponds to the cutting direction so as to cut the material to be cut (raw material sheet 10bs) in the transport direction MD (first direction D1).
  • the 2nd cutting mechanism 5B is comprised including the cutter roll 53 and the anvil roll 54, as shown in FIG.2 and FIG.3.
  • the two rolls 53 and 54 are rotatably supported around their respective rotation axes, and arranged so that their circumferential surfaces face each other and rotate in opposite directions while aligning their rotation axes in parallel.
  • the cutter blade 53C is disposed on the circumferential surface of the cutter roll 53
  • the circumferential surface of the receiving roller 54 is smooth without the cutter blade being disposed.
  • the cutter blade 53C of the cutter roll 53 corresponds to the cutting direction so as to cut the object to be cut (the narrow sheet 10bt) in the conveyance orthogonal direction CD (second direction D2).
  • the manufacturing method of the sheet piece 11 using the manufacturing apparatus 1 of the above structures is demonstrated with the manufacturing method of the absorber 10 using this manufacturing method.
  • a sheet piece manufacturing process for obtaining the sheet piece 11 by cutting (cross-cutting) the strip-like raw material sheet 10bs, and conveying and accumulating the sheet piece 11 to a predetermined accumulation portion by air flow And an accumulation step.
  • the said sheet piece manufacturing process is a process implemented according to the manufacturing method of the sheet piece of this invention. First, the sheet piece manufacturing process will be described.
  • the sheet piece manufacturing process in the method of manufacturing the absorbent body 10 of the present embodiment is performed by the second supply mechanism 5 and, as shown in FIGS.
  • the strip-like raw material sheet 10bs in which the fibers (synthetic fibers) are accumulated is cut in a first direction D1 (conveying direction MD) along the longitudinal direction of the raw material sheet 10bs to obtain a plurality of strip-like narrow sheets 10bt
  • the sheet pieces 11 are manufactured by cutting the plurality of narrow sheets 10bt in the second direction D2 (conveying orthogonal direction CD) intersecting (in the illustrated embodiment, "orthogonal") in the first direction D1.
  • the sheet material 10bs is conveyed by the first cutting mechanism 5A while the strip-like raw material sheet 10bs is conveyed in one direction.
  • the raw material sheet 10bs being conveyed is transferred to the cutting portion 50A which is the closest portion of the rolls 51 and 52 between the cutter roll 51 and the anvil roll 52 of the first cutting mechanism 5A.
  • the plurality of narrow sheets 10bt extending in the same direction D1 are manufactured by cutting in the first direction D1 (see FIG. 4) which is the longitudinal direction of the sheet 10bs and is also the transport direction MD by the cutter blade 51C. Cutting process).
  • the said 1st cutting process is implemented by introduce
  • the average width of the narrow sheets 10bt formed in the first cutting step (the average value of the lengths of the plurality of narrow sheets 10b in the conveyance orthogonal direction CD) is necessary for the sheet piece 11 to exhibit a predetermined effect. From the viewpoint of securing such dimensions, it is preferably 0.1 mm or more and 10 mm or less, more preferably 0.3 mm or more and 6 mm or less, and particularly preferably 0.5 mm or more and 5 mm or less.
  • the width of the narrow sheet 10bt (the length in the conveyance orthogonal direction CD) cut by the cutter roll 51 of the first cutting mechanism 5A is the width of the sheet piece 11 finally formed. It corresponds to the side length of the direction.
  • the width of the narrow sheet 10bt cut by the cutter roll 51 of the first cutting mechanism 5A is cut so as to correspond to the length of the longitudinal side of the sheet piece 11 finally formed.
  • the average width of the narrow sheet 10bt cut by the cutter roll 51 in that case is preferably 0.3 mm or more and 30 mm or less, more preferably 1 mm or more and 15 mm or less, and 2 mm or more and 10 mm or less Is particularly preferred.
  • the plurality of narrow sheets 10bt manufactured in this manner are conveyed to the second cutting mechanism 5B in a state of being arranged in parallel in the conveyance orthogonal direction CD.
  • the plurality of strip-like narrow sheets 10bt manufactured in the first cutting step are both rolls between the cutter roll 53 and the anvil roll 54 of the second cutting mechanism 5B.
  • the cutting portion 50B which is the closest portion of 53 and 54, it is cut by the cutter blade 53C in the second direction D2 (see FIG. 4) which is the width direction of the narrow sheet 10bt and the transport orthogonal direction CD.
  • a plurality of sheet pieces 11 having a predetermined length in the direction D2 are manufactured (second cutting step).
  • FIG. 5 shows how a plurality of sheet pieces 11 are manufactured by cutting a plurality of narrow sheets 10bt traveling in parallel in the transport orthogonal direction CD by the cutter roll 53 in the second cutting mechanism 5B in the transport orthogonal direction CD.
  • the second cutting step is performed by introducing the narrow sheet 10bt between the cutter roll 53 rotating around the rotation axis and the anvil roll 54 (cut portion 50B).
  • reference numeral 530 indicates a roll main body of the cutter roll 53
  • reference numeral 531 indicates a rotation axis of the cutter roll 53.
  • the other rolls 51, 52, 54 in the second supply mechanism 5 also have a roll main body and a rotating shaft.
  • the raw material sheet 10bs is cut into a gauze shape as shown in FIG.
  • the plurality of sheet pieces 11 have a rectangular parallelepiped shape or a cubic shape.
  • the average length of the sheet pieces 11 formed in the second cutting step is that the sheet pieces 11 have a predetermined effect.
  • the length of the sheet piece 11 cut by the cutter roll 53 of the second cutting mechanism 5B corresponds to the length of the side of the sheet piece 11 in the longitudinal direction.
  • the length of the sheet piece 11 cut by the cutter roll 53 of the second cutting mechanism 5B may be cut so as to correspond to the length of the short side of the sheet piece 11, in that case
  • the length (width) of the sheet piece 10bh cut by the cutter roll 53 of the second cutting mechanism 5B is preferably 0.1 mm or more and 10 mm or less, and further preferably 0.3 mm or more and 6 mm or less Preferably, it is 0.5 mm or more and 5 mm or less.
  • the second supply mechanism 5 is completed.
  • the plurality of sheet pieces 11 manufactured in the first embodiment and the hydrophilic fibers 12 manufactured in the first supply mechanism 4 are accumulated in the accumulation recess 22 as the accumulation portion formed on the outer peripheral surface 2 f of the rotating drum 2 (Accumulation process).
  • the plurality of sheet pieces 11 manufactured in the sheet piece manufacturing process are supplied to the flow path 30 in the duct 3 by the suction nozzle 8 and flow from the first supply mechanism 4 toward the rotary drum 2 It mixes with the hydrophilic fiber 12 which has scattered the path
  • the suction nozzle 8 is open at both ends in the length direction, and one of the openings 81 is near the cutting portion 50B which is the closest portion between the cutter roll 53 of the second cutting mechanism 5B and the anvil roll 54. , And communicates with the flow passage 30 in the duct 3 at the other opening (not shown).
  • the plurality of sheet pieces 11 manufactured between the cutter roll 53 and the anvil roll 54 are taken into the suction nozzle 8 through the opening 81 and supplied into the duct 3.
  • the connection position of the suction nozzle 8 and the duct 3 is between the rotary drum 2 and the first supply mechanism 4 as shown in FIG. It is the position of the side.
  • the polymer dispersion tube 31 (see FIG. 2) disposed in the duct 3 is used to flow the water absorbent polymer particles in the duct 3 in the accumulation step. It is supplied to the passage 30 and placed in the air flow flowing in the flow passage 30 toward the accumulation recess 22, and together with the sheet piece 11 and the hydrophilic fiber 12 separately supplied in the flow passage 30, the accumulation recess 22 Stacked
  • the 2nd cutting process in the 2nd supply mechanism 5 which cross-cuts the raw material sheet 10bs, ie
  • the narrow sheet 10bt is cut It is possible that a defect occurs and that the narrow sheet 10bt is not cut at a predetermined position but is conveyed to a predetermined accumulation portion in a long strip-like state, or a disadvantage such as winding around each portion of the manufacturing apparatus 1 such as the cutter roll 53 is generated.
  • the narrow sheet 10bt which is the object to be cut in the second cutting step, extends from the cutting portion 50A of the first cutting mechanism 5A to just before the cutting portion 50B of the second cutting mechanism 5B.
  • the narrow sheet 10bt after being cut in the conveyance orthogonal direction CD for the first time by the cutting section 50B and being cut out of the first sheet piece although it is continuous in the conveyance direction MD and given a constant tension. Since the cut end is in a non-fixed state, the tension is insufficient. Therefore, when the cutter blade 53C is worn and deteriorated due to long-term use, it is presumed that a cutting defect easily occurs.
  • the peripheral speed V1 (see FIG. 3) of the cutter roll 53 is the introduction speed V0 (see FIG. 3) between the cutter roll 53 and the anvil roll 54 of the narrow sheet 10bt (see FIG. 3). It is made faster than that, that is, the magnitude relation that "the peripheral velocity V1 of the cutter roll> the introduction velocity V0 of the object to be cut" is established.
  • the strip-like narrow sheet 10bt to be cut is given sufficient tension to cut it in the direction intersecting with the transport direction MD, and the thin sheet by the second cutting mechanism 5B
  • the width sheet 10bt can be stably cut, and the plurality of sheet pieces 11 of uniform size can be continuously and efficiently manufactured.
  • the ratio of the peripheral velocity V1 to the introduction velocity V0 is preferably 1.1 or more, more preferably 1.2 or more, and preferably 4.0 or less, more preferably V1 or V0, assuming V1> V0. Is less than 3.5.
  • the peripheral velocity V1 of the cutter roll 53 and the introduction velocity V0 of the narrow sheet 10bt are not particularly limited, respectively, and may be appropriately adjusted according to the type, physical properties, etc. of the narrow sheet 10bt.
  • the peripheral velocity V and the introduction velocity V0 can be set as follows.
  • Peripheral speed V1 preferably 30 m / min or more, more preferably 50 m / min or more, and preferably 1000 m / min or less, more preferably 500 m / min or less.
  • the introduction speed V0 is the same as the setting value of the peripheral speed V1. It can be set by the relationship between the peripheral velocity V1 and the introduction velocity V0.
  • the narrow sheet 10bt is placed between the first cutting mechanism 5A and the second cutting mechanism 5B.
  • a feed mechanism 5C for feeding out from the upstream side to the downstream side of the transport direction MD is disposed, and the introduction speed V0 is adjusted by the feed mechanism 5C.
  • the feeding speed of the narrow sheet 10bt by the feed mechanism 5C is usually the same as the introduction speed V0 of the narrow sheet 10bt to the cutter roll 53 (the second cutting mechanism 5B).
  • the delivery speed of the narrow sheet 10bt by the feed mechanism 5C means the speed on the surface of the delivered narrow sheet 10bt.
  • the feed mechanism 5C is configured to include a pair of rotating rolls 55, 55 disposed opposite to each other across the sheet conveyance path, and the narrow sheet 10bt introduced between the two rolls 55, 55 is It is configured to be sandwiched by both rolls 55, 55 and sent out to the downstream side in the transport direction MD.
  • the feed mechanism 5C contacts and sends out the narrow sheet 10bt at the closest portion (nip portion) between the rolls 55 and 55, and the closest portion is the narrow sheet 10bt and the narrow sheet 10bt.
  • Contact portion 50C One of the two rolls 55, 55 may be connected to the drive source, and may be a drive roll that can rotate alone about the rotation axis, and the other may be a co-rolling roll that can not rotate around the axis. Both may be drive rolls.
  • a separation distance L2 (see FIG. 3) along the sheet conveyance path between them is a separation distance L1 along the sheet conveyance path between the contact portion 50C and the cutting portion 50B of the narrow sheet 10bt in the first cutting mechanism 5A. It is preferable to be shorter than (see FIG. 3).
  • the ratio of the separation distances L1 and L2 is preferably 0.8 or less, and more preferably 0.5 or less as L2 / L1, on the assumption that L1> L2.
  • a tension adjustment process is provided to adjust the tension of the raw material sheet 10bs.
  • the tension adjustment mechanism 5D is disposed in the sheet conveyance path on the upstream side of the first cutting mechanism 5A in the conveyance direction MD, and the tension adjustment mechanism 5D tensions the raw material sheet 10bs.
  • the tension at the time of conveyance of the narrow sheet 10bt formed by cutting the raw material sheet 10bs in the conveyance direction MD is stabilized by adjusting.
  • the tension adjusting mechanism 5D includes two fixed rolls 59A, 59A intermittently arranged in the transport direction MD, and a dancer roll 59B arranged between the both rolls 59A, 59A. ing.
  • the dancer roll 59B is movable between the two rolls 59A, 59A in a direction approaching the raw material sheet 10b being conveyed, and is also movable in the opposite direction to the approaching direction.
  • By moving the dancer roll 59B between the two rolls 59A, 59A in a direction approaching the raw material sheet 10bs being conveyed the raw material sheet 10bs is pressed by the roll 59B, and the tension of the raw material sheet 10bs increases. Further, by moving in the opposite direction to the approaching direction, the tension is reduced.
  • Such moving mechanism of the dancer roll 59B can be configured in the same manner as in the known dancer roll.
  • FIG. 6 Another embodiment of the second supply mechanism 5 provided in the manufacturing apparatus 1 is shown in FIG.
  • the second supply mechanism 5 shown in FIG. 6 differs from the second supply mechanism 5 shown in FIG. 3 in the configuration of the feed mechanism 5C.
  • the feed mechanism 5C in the second supply mechanism 5 shown in FIG. 6 includes a pair of rotary belts 56, 56 disposed opposite to each other across the sheet conveyance path, and the narrow width introduced between both belts 56, 56
  • the sheet 10bt is moved by a predetermined distance in the same direction as the narrow sheet 10bt while holding the sheet 10bt between the belts 56 and 56, and thereafter, the narrow sheet 10bt is fed to the downstream side in the transport direction MD.
  • the pair of rotary belts 56 and 56 are respectively endless belts and are wound around a plurality of (two) rotary rolls 57 and 57 intermittently arranged in the conveyance direction MD along the sheet conveyance path.
  • a dancer roll 58 for adjusting the tension of the rotating belt 56 is disposed in the vicinity of each rotating belt 56.
  • the dancer roll 58 is movable in the direction approaching the rotating belt 56 and is also movable in the opposite direction to the approaching direction, and the rotation of the dancer roll 58 is adjusted by adjusting the moving direction and the amount of movement of the roll 58.
  • a feed mechanism not only the said embodiment but a vacuum conveyor provided with a suction device which makes the rotation belt and the narrow sheet 10bt adsorb
  • FIG. 7 shows another embodiment of the cutter roll 53 in the second cutting mechanism 5B included in the manufacturing apparatus 1.
  • the cutter blade 53C of the cutter roll 53 extends parallel to the rotation axis direction (the conveyance orthogonal direction CD) of the roll 53, but in the embodiment shown in FIG. It has a portion extending in a direction intersecting with the 53 rotational axis direction.
  • the plurality of cutter blades 53 ⁇ / b> C disposed on the circumferential surface extend in a direction intersecting with the rotational axis direction of the roll 53 without intersecting in plan view. It has a straight shape, and the entire cutter blade 53C extends in this direction.
  • the cutter blade 53C in the cutter roll 53 extend in parallel to the rotational axis direction of the roll 53 as shown in FIG. 5, the cutter blade 53C is brought into contact with the narrow sheet 10bt to be cut. Immediately after cutting, there occurs a time in which there is no other cutter blade 53C in contact with the cut narrow sheet 10bt, so that it is impossible to instantaneously apply an appropriate tension to the narrow sheet 10bt. The conveyance stability of the sheet 10bt may be reduced, which may lead to cutting failure. On the other hand, in the case where the cutter blade 53C has a portion extending in the direction intersecting the rotational axis direction of the cutter roll 53 as shown in FIG. 7, the cutter blade 53C with respect to the narrow sheet 10bt being conveyed.
  • the conveyance stability of the narrow sheet 10bt can be further improved, which can lead to the further prevention of the cutting failure.
  • the cutter blade 53C has a portion extending in the direction intersecting with the rotational axis direction of the cutter roll 53, and the whole of the cutter blade 53C is shown in FIG. It does not have to extend in the direction intersecting the rotation axis direction. From that point of view, the cutter blade 53C may have, for example, a wave shape extending in parallel with the rotation axis direction of the cutter roll 53 in a plan view, in addition to the form shown in FIG.
  • the inclination angle of the cutter roll 53 with respect to the rotation axis direction in the extension direction of the cutter blade 53C is 3 ° or more is preferable, 5 ° or more is further preferable, and 50 ° or less is preferable, 30 ° or less is more preferable, 3 ° or more and 50 ° or less is preferable, and 5 ° or more and 30 ° or less is more preferable.
  • the second cutting mechanism includes a cutter roll rotatably supported about an axis and having a cutter blade on a circumferential surface and an anvil roll disposed to face the cutter roll, and the second cutting step , By introducing the narrow sheet between the cutter roll rotating about an axis and the anvil roll;
  • the sheet strip manufacturing method wherein the peripheral speed (V1) of the cutter roll is made faster than the introduction speed (V0) of the narrow sheet between the cutter roll and the anvil roll.
  • a feed mechanism is disposed between the first cutting mechanism and the second cutting mechanism for feeding the narrow sheet from the upstream side to the downstream side in the conveying direction, and the feed mechanism is configured to The manufacturing method of the sheet piece as described in said ⁇ 1> which adjusts introduction speed.
  • a separation distance (L2) along a sheet conveyance path between a cutting portion of the raw material sheet in the second cutting mechanism and a contact portion with the narrow sheet in the feed mechanism is the contact portion The method of manufacturing a sheet piece according to ⁇ 2>, wherein the method is shorter than the separation distance (L1) along the sheet conveyance path between the first cutting mechanism and the cutting portion of the narrow sheet.
  • the ratio of L2 / L1 to the separation distance (L1) along the sheet conveyance path between the first cutting mechanism and the cutting portion of the narrow sheet is preferably 0.8 or less, more preferably 0.
  • the manufacturing method of the sheet piece as described in said ⁇ 3> which is .5 or less.
  • the feed mechanism is configured to include a pair of rotating rolls disposed opposite to each other with the sheet conveyance path interposed therebetween, and the narrow sheet introduced between both rolls is sandwiched by both rolls and the conveyance direction downstream thereof
  • the feed mechanism is configured to include a pair of rotating belts disposed opposite to each other across the sheet conveyance path, and the narrow sheet introduced between both belts is held by the both belts, the narrow width The sheet is moved by a predetermined distance in the same direction as the sheet, and thereafter, the narrow sheet is fed to the downstream side in the conveying direction.
  • Method. ⁇ 7> The method according to ⁇ 6>, wherein the pair of rotating belts is an endless belt, and is wound around a plurality of rotating rolls intermittently arranged in the conveying direction along the sheet conveying path. .
  • the feed mechanism is a vacuum conveyor including a rotating belt and a suction device for adsorbing the narrow sheet to the rotating belt, and the narrow sheet introduced between both belts is sandwiched by both belts.
  • ⁇ 9> The method for producing a sheet according to any one of ⁇ 1> to ⁇ 8>, further comprising: a tension adjusting step of adjusting the tension of the raw material sheet before the first cutting step.
  • a tension adjusting step of adjusting the tension of the raw material sheet before the first cutting step.
  • the inclination angle with respect to the rotation axis direction of the cutter roll is preferably 3 ° or more, more preferably 5 ° or more, and preferably The manufacturing method of the sheet piece as described in said ⁇ 10> which is 50 degrees or less, More preferably, it is 30 degrees or less.
  • the ratio of the peripheral speed (V1) of the cutter roll and the introduction speed (V0) of the narrow sheet between the cutter roll and the anvil roll is preferably 1.1 as V1 / V0.
  • the method for producing a sheet piece according to any one of the above ⁇ 1> to ⁇ 11> which is more preferably 1.2 or more, and preferably 4.0 or less, more preferably 3.5 or less.
  • the peripheral velocity (V1) of the cutter roll is preferably 30 m / min or more, more preferably 50 m / min or more, and preferably 1000 m / min or less, more preferably
  • the method for producing a sheet piece according to any one of the above ⁇ 1> to ⁇ 12> which has a value of 500 m / min or less.
  • the average value (average width) of the lengths in the conveyance cross direction of the plurality of narrow sheet pieces formed in the first cutting step is preferably 0.1 mm or more and 10 mm or less, more preferably 0.
  • the average value (average length) of lengths along the transport direction of the plurality of sheet pieces formed in the second cutting step is preferably 0.3 mm or more and 30 mm or less, more preferably 1 mm or more and 15 mm
  • a method of manufacturing an absorbent containing a plurality of sheet pieces A method of manufacturing an absorber, comprising the steps of conveying and accumulating sheet pieces manufactured by the manufacturing method according to any one of ⁇ 1> to ⁇ 15> by a flow of air to a predetermined accumulation portion.
  • a plurality of strip-shaped sheet pieces are formed by cutting the narrow sheet, which is disposed downstream of the cutting mechanism in the transport direction and formed by the first cutting mechanism, in the transport cross direction intersecting the transport direction.
  • An apparatus for manufacturing a sheet piece comprising: a second cutting mechanism;
  • the second cutting mechanism includes a cutter roll rotatably supported about an axis and having a cutter blade on a circumferential surface, and an anvil roll disposed opposite to the cutter roll, and both rolls rotating about an axis Configured to cut the narrow sheet introduced therebetween in the conveying cross direction,
  • An apparatus for producing a sheet strip wherein the peripheral speed of the cutter roll is higher than the introduction speed of the narrow sheet between the cutter roll and the anvil roll.
  • a feed mechanism is provided between the first cutting mechanism and the second cutting mechanism to feed the narrow sheet from the upstream side to the downstream side in the conveying direction, and the introduction mechanism The manufacturing apparatus of the sheet piece as described in said ⁇ 17> which adjusts speed.
  • a separation distance (L2) along a sheet conveyance path between a cutting portion of the raw material sheet in the second cutting mechanism and a contact portion with the narrow sheet in the feed mechanism is the contact portion
  • the manufacturing apparatus of the sheet piece as described in said ⁇ 18> short compared with the separation distance (L1) along the sheet conveyance path between the cutting parts of this narrow sheet in said 1st cutting mechanism.
  • the ratio of L2 / L1 to the separation distance (L1) along the sheet conveyance path between the first cutting mechanism and the cutting portion of the narrow sheet is preferably 0.8 or less, more preferably 0.
  • the manufacturing apparatus of the sheet piece as described in said ⁇ 19> which is .5 or less.
  • the feed mechanism includes a pair of rotating rolls disposed opposite to each other with the sheet conveyance path interposed therebetween, and the narrow sheet introduced between both rolls is sandwiched by both rolls and the conveyance direction downstream thereof
  • the feed mechanism is configured to include a pair of rotating belts disposed opposite to each other across the sheet conveyance path, and the narrow sheet introduced between both belts is held by both belts while the narrow width is held.
  • the sheet is moved by a predetermined distance in the same direction as the sheet, and thereafter, the narrow sheet is fed to the downstream side in the transport direction, and the sheet piece according to any one of ⁇ 17> to ⁇ 20> is produced.
  • apparatus. ⁇ 23> The apparatus for manufacturing a sheet according to ⁇ 22>, wherein the pair of rotary belts are endless belts and are wound around a plurality of rotary rolls intermittently arranged in the conveyance direction along the sheet conveyance path. .
  • the feed mechanism is a vacuum conveyor provided with a rotating belt and a suction device for adsorbing the narrow sheet to the rotating belt, and the narrow sheet introduced between both belts is sandwiched by both belts.
  • ⁇ 25> The sheet piece according to any one of ⁇ 17> to ⁇ 24>, further including a tension adjusting mechanism for adjusting the tension of the raw material sheet on the upstream side in the transport direction with respect to the first cutting mechanism.
  • Production equipment. ⁇ 26> The sheet piece according to ⁇ 25>, wherein the tension adjustment mechanism includes two fixed rolls intermittently arranged in the transport direction and a dancer roll disposed between the two rolls.
  • the inclination angle with respect to the rotation axis direction of the cutter roll is preferably 3 ° or more, more preferably 5 ° or more, and preferably The manufacturing apparatus of the sheet piece as described in said ⁇ 27> which is 50 degrees or less, More preferably, it is 30 degrees or less.
  • the ratio of the peripheral speed (V1) of the cutter roll and the introduction speed (V0) of the narrow sheet between the cutter roll and the anvil roll is preferably 1.1 as V1 / V0.
  • the apparatus for producing a sheet piece according to any one of the above ⁇ 17> to ⁇ 28> which is more preferably not less than 1.2, and preferably not more than 4.0, more preferably not more than 3.5.
  • the peripheral velocity (V1) of the cutter roll is preferably 30 m / min or more, more preferably 50 m / min or more, and preferably 1000 m / min or less, more preferably The manufacturing apparatus of the sheet piece of any one of said ⁇ 17>- ⁇ 29> which is 500 m / min or less.
  • the average value (average width) of the lengths in the conveyance cross direction of the plurality of narrow sheet pieces formed by the first cutting mechanism is preferably 0.1 mm or more and 10 mm or less, more preferably 0 .
  • the average value (average length) of the lengths along the transport direction of the plurality of sheet pieces formed by the second cutting mechanism is preferably 0.3 mm or more and 30 mm or less, more preferably 1 mm or more
  • the manufacturing apparatus of the sheet piece of any one of said ⁇ 17>- ⁇ 31> which is 15 mm or less, especially preferably 2 mm or more and 10 mm or less.
  • the first cutting mechanism includes a cutter roll rotatably supported around an axis and having a cutter blade on a circumferential surface, and an anvil roll disposed opposite to the cutter roll, the first cutting.
  • the cutter blade of the mechanism extends in the circumferential direction of the cutter roll of the first cutting mechanism, and extends over the entire circumferential length of the peripheral surface of the cutter roll.
  • the cutter blade of the second cutting mechanism extends in the rotational axis direction of the cutter roll in the second cutting mechanism, and in the circumferential surface of the cutter roll from the central portion in the rotational axis direction, the same direction
  • seat is suppressed and the several sheet piece of the intended size can be manufactured continuously continuously and efficiently.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Mechanical Engineering (AREA)
  • Epidemiology (AREA)
  • Forests & Forestry (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
PCT/JP2018/043499 2017-11-28 2018-11-27 シート片の製造方法及びシート片の製造装置並びに吸収体の製造方法 WO2019107333A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
RU2020120948A RU2774288C2 (ru) 2017-11-28 2018-11-27 Способ изготовления листовых элементов, устройство для изготовления листовых элементов и способ получения впитывающей массы
CN201880076656.8A CN111417369B (zh) 2017-11-28 2018-11-27 片材碎片的制造方法及片材碎片的制造装置以及吸收体的制造方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017228429A JP2019097614A (ja) 2017-11-28 2017-11-28 シート片の製造方法及びシート片の製造装置並びに吸収体の製造方法
JP2017-228429 2017-11-28

Publications (1)

Publication Number Publication Date
WO2019107333A1 true WO2019107333A1 (ja) 2019-06-06

Family

ID=66665027

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2018/043499 WO2019107333A1 (ja) 2017-11-28 2018-11-27 シート片の製造方法及びシート片の製造装置並びに吸収体の製造方法

Country Status (4)

Country Link
JP (1) JP2019097614A (zh)
CN (1) CN111417369B (zh)
TW (1) TW201924887A (zh)
WO (1) WO2019107333A1 (zh)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE112017007901T5 (de) 2017-10-03 2020-05-14 Kao Corporation Verfahren zur herstellung eines absorptionskörpers und vorrichtung zur herstellung eines absorptionskörpers
CN110621273B (zh) 2017-10-03 2022-02-22 花王株式会社 吸收体的制造方法
RU2750537C1 (ru) 2017-11-28 2021-06-29 Као Корпорейшн Способ изготовления впитывающего компонента и способ изготовления впитывающего изделия
CN115605108A (zh) 2020-04-30 2023-01-13 株式会社瑞光（Jp） 口罩用耳挂构件的制造方法以及口罩用耳挂构件制造装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5151113Y1 (zh) * 1969-02-28 1976-12-08
JPH09183093A (ja) * 1995-12-28 1997-07-15 Kao Corp ウエブの切断装置及び方法
JP2002301105A (ja) * 2001-04-06 2002-10-15 Uni Charm Corp 吸収性物品、吸収性物品用吸収体及びその製造方法
JP2005126623A (ja) * 2003-10-27 2005-05-19 Konica Minolta Medical & Graphic Inc ポリエステル系樹脂支持体回収方法
JP2009000776A (ja) * 2007-06-21 2009-01-08 Kao Corp シートの切断装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001353691A (ja) * 2000-06-15 2001-12-25 Meiwa Kosakusho:Kk プラスチックバンド細断機及び該機用の刃付ロール
JP2003251589A (ja) * 2001-12-26 2003-09-09 Dainippon Ink & Chem Inc ガラス繊維ストランド切断装置およびシートモールディングコンパウンドの製造法
JP5393394B2 (ja) * 2009-10-19 2014-01-22 ユニ・チャーム株式会社 吸収性物品に係る連続シートの複合体の製造方法、及び製造装置
WO2013187291A1 (ja) * 2012-06-11 2013-12-19 花王株式会社 積繊装置
JP6764643B2 (ja) * 2015-11-24 2020-10-07 花王株式会社 吸収体の製造方法及び吸収体の製造装置
WO2017212519A1 (ja) * 2016-06-06 2017-12-14 ユニ・チャーム株式会社 吸収性物品に係る連続シートの複合体の製造方法、及び製造装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5151113Y1 (zh) * 1969-02-28 1976-12-08
JPH09183093A (ja) * 1995-12-28 1997-07-15 Kao Corp ウエブの切断装置及び方法
JP2002301105A (ja) * 2001-04-06 2002-10-15 Uni Charm Corp 吸収性物品、吸収性物品用吸収体及びその製造方法
JP2005126623A (ja) * 2003-10-27 2005-05-19 Konica Minolta Medical & Graphic Inc ポリエステル系樹脂支持体回収方法
JP2009000776A (ja) * 2007-06-21 2009-01-08 Kao Corp シートの切断装置

Also Published As

Publication number Publication date
RU2020120948A (ru) 2021-12-29
JP2019097614A (ja) 2019-06-24
TW201924887A (zh) 2019-07-01
RU2020120948A3 (zh) 2021-12-29
CN111417369B (zh) 2022-01-07
CN111417369A (zh) 2020-07-14

Similar Documents

Publication Publication Date Title
WO2019107333A1 (ja) シート片の製造方法及びシート片の製造装置並びに吸収体の製造方法
JP5624868B2 (ja) 吸収性物品の製造方法
WO2013061917A1 (ja) 伸縮性シートの製造方法
JP7027103B2 (ja) 吸収体の製造方法及び吸収体の製造装置
JP7029997B2 (ja) 吸収体の製造方法及び吸収体の製造装置
JP2017046928A (ja) 吸収体の製造方法
WO2013089009A1 (ja) 裁断装置
US20140155853A1 (en) Apparatus and methods for forming laminates containing additive matter
WO2012056942A1 (ja) 伸縮性シートの製造方法
JP7027102B2 (ja) 吸収体の製造方法及び吸収体の製造装置
JP5089758B2 (ja) 伸縮性シートの製造装置
JP6982453B2 (ja) 吸収体の製造方法及び吸収体の製造装置
JP6952561B2 (ja) 吸収性物品の製造方法及び吸収性物品の製造装置
JP6965082B2 (ja) 吸収体の製造方法
JP2003159276A (ja) 吸収体の製造方法
WO2020209006A1 (ja) 使い捨て着用物品の吸収性コアの製造装置および製造方法
JP2019063368A (ja) 吸収体の製造方法
JP6591136B2 (ja) 吸収体及び吸収性物品の製造方法並びに吸収体及び吸収性物品の製造装置
JP6603830B2 (ja) 吸収体の製造方法
JP6699980B2 (ja) 吸収体の製造方法及び吸収体の製造装置
JP6620271B2 (ja) 吸収体の製造方法及び吸収性物品の製造方法
JP2012090663A (ja) 吸収体の製造方法
RU2774288C2 (ru) Способ изготовления листовых элементов, устройство для изготовления листовых элементов и способ получения впитывающей массы
JP7428497B2 (ja) 吸収体の製造方法
WO2019064841A1 (ja) 吸収体の製造方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18883289

Country of ref document: EP

Kind code of ref document: A1

DPE1 Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101)
NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18883289

Country of ref document: EP

Kind code of ref document: A1