WO2013047268A1 - 吸収性物品 - Google Patents

吸収性物品 Download PDF

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Publication number
WO2013047268A1
WO2013047268A1 PCT/JP2012/073825 JP2012073825W WO2013047268A1 WO 2013047268 A1 WO2013047268 A1 WO 2013047268A1 JP 2012073825 W JP2012073825 W JP 2012073825W WO 2013047268 A1 WO2013047268 A1 WO 2013047268A1
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WO
WIPO (PCT)
Prior art keywords
sheet
facing surface
surface side
pressing
pressure
Prior art date
Application number
PCT/JP2012/073825
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
原田　裕之
克裕 植松
裕介 小迫
Original Assignee
ユニ・チャーム株式会社
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 ユニ・チャーム株式会社 filed Critical ユニ・チャーム株式会社
Priority to CN201280047486.3A priority Critical patent/CN103826585B/zh
Priority to KR1020147010289A priority patent/KR101972622B1/ko
Priority to AU2012317826A priority patent/AU2012317826B2/en
Publication of WO2013047268A1 publication Critical patent/WO2013047268A1/ja

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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
    • A61F13/45—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 shape
    • A61F13/47—Sanitary towels, incontinence pads or napkins
    • A61F13/475—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means
    • A61F13/4751—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means the means preventing fluid flow in a transversal direction
    • A61F13/4756—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means the means preventing fluid flow in a transversal direction the means consisting of grooves, e.g. channels, depressions or embossments, resulting in a heterogeneous surface level
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/534—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad
    • A61F13/537—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer
    • A61F13/53708—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer the layer having a promotional function on liquid propagation in at least one direction
    • A61F2013/53721—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer the layer having a promotional function on liquid propagation in at least one direction with capillary means
    • A61F2013/53734—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer the layer having a promotional function on liquid propagation in at least one direction with capillary means with compressed lines
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/534—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad
    • A61F13/537—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer
    • A61F2013/53765—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer characterized by its geometry
    • A61F2013/53778—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer characterized by its geometry with grooves

Definitions

  • the present invention relates to an absorbent article, and more particularly, to an absorbent article such as a light incontinence pad, a panty liner, a sanitary napkin, a cage absorbent pad, a urine absorbent pad, and a paper diaper.
  • an absorbent article such as a light incontinence pad, a panty liner, a sanitary napkin, a cage absorbent pad, a urine absorbent pad, and a paper diaper.
  • a liquid-permeable surface sheet placed on one side in the thickness direction and positioned on the wearer's skin facing surface side, and a liquid-permeable surface sheet placed on the other side in the thickness direction and positioned on the wearer's non-skin facing surface side Absorbent articles comprising a liquid-permeable back sheet and a liquid-absorbent structure interposed between the top sheet and the back sheet are known.
  • Patent Document 1 discloses a sanitary napkin that includes a top sheet, a back sheet, and a liquid-absorbing structure.
  • a pressing recess is formed that is compressed in a direction from the skin facing surface side to the non-skin facing surface side.
  • the dimension in the thickness direction can be reduced at the site where the compressed recess is formed, and the softness can be maintained at the site where the compressed recess is not formed.
  • the compression recessed part of the absorbent article currently disclosed by patent document 1 is formed in the direction which goes to a back sheet from a surface sheet. Therefore, the unevenness
  • the wearer feels uncomfortable because the lump formed by the melting of the surface sheet comes into contact with the skin of the wearer, or the body fluid is long in the unevenness. There was a problem that time remained.
  • the dimension in the thickness direction can be reduced, the softness can be maintained, the wearer does not feel uncomfortable, and body fluid remains on the surface sheet for a long time.
  • the challenge is to provide a non-absorbent article.
  • the present invention has a longitudinal direction, a lateral direction, and a thickness direction that are orthogonal to each other, and is disposed on one side of the thickness direction and located on the side facing the wearer's skin.
  • An absorbent surface sheet, a back sheet located on the non-skin-facing surface side of the wearer and disposed on the other side in the thickness direction, and an absorbent structure interposed between the top sheet and the back sheet Assume a sex product.
  • the feature of the present invention is that the liquid-absorbent structure includes a liquid-permeable first sheet positioned on the skin facing surface side, a second sheet positioned on the non-skin facing surface side, and a first sheet.
  • a part of the liquid-absorbent structure is formed with a pressing recess that is pressed in a direction from the non-skin facing surface side to the skin facing surface side.
  • the pressing recess includes a high-pressure pressing recess having a relatively small dimension in the thickness direction and a low-pressure pressing recess having a relatively large dimension in the thickness direction.
  • a plurality of high-pressure depressions are formed in a scattered manner in the vertical direction and the horizontal direction.
  • the low pressure depression is formed so as to connect the high pressure depression and the high pressure depression in the vertical direction and the horizontal direction.
  • the dimension in the thickness direction is the portion where the compressed concave portion is formed. Can be made small, and the softness can be maintained at the site where the compressed recess is not formed.
  • the pressing recessed part compressed in the direction which goes to the skin opposing surface side from the non-skin opposing surface side is formed in a part of liquid absorbing structure, the skin opposing surface side of the liquid absorbing structure It is not necessary to form a pressing recessed part in the surface sheet arrange
  • the pressing recess includes a high pressing recess having a relatively small dimension in the thickness direction and a low pressing recess having a relatively large dimension in the thickness direction.
  • a plurality of low compression depressions are formed in a scattered manner, and the low compression depressions are formed so as to connect the high compression depressions and the high compression depressions in the vertical direction and the horizontal direction.
  • the squeezing recessed part comprised by follows in the horizontal direction X and the vertical direction Y. Since the compressive recess is tightly entangled with the absorbent fibers, the compressed recess is continuous even when a force is applied to the sanitary napkin when the wearer wears the sanitary napkin. Thus, the rigidity can be improved and the occurrence of twisting or bending of the sanitary napkin can be suppressed.
  • FIG. 3 is an enlarged sectional view taken along line III-III in FIG. 1.
  • FIG. 5 is an enlarged sectional view taken along line VV in FIG. 4.
  • the enlarged view of the part shown by VI of FIG. The enlarged view which shows the skin opposing surface side of FIG. Explanatory drawing which shows an emboss press process.
  • the IX-IX line expanded sectional view of FIG. The elements on larger scale which show the non-skin opposing surface side of the sanitary napkin of a 1st modification.
  • the elements on larger scale which show the non-skin opposing surface side of the sanitary napkin of a 2nd modification.
  • FIG. 1 is a plan view of a sanitary napkin 10 according to the present invention
  • FIG. 2 is an enlarged sectional view taken along the line II-II of FIG. 1
  • FIG. 3 is an enlarged sectional view taken along the line III-III of FIG. is there.
  • X indicates a horizontal direction
  • Y indicates a vertical direction orthogonal to the horizontal direction X
  • Z indicates a thickness direction orthogonal to the horizontal direction X and the vertical direction Y
  • P indicates a horizontal direction of the sanitary napkin 10.
  • a virtual vertical center line that bisects the lengthwise dimension of the direction X is shown
  • Q denotes a virtual horizontal centerline that bisects the lengthwise dimension of the sanitary napkin 10 in the longitudinal direction Y.
  • the sanitary napkin 10 is formed symmetrically with respect to the virtual vertical center line P and the virtual horizontal center line Q, for example, and faces opposite to the wearer's skin (hereinafter simply referred to as “skin-facing face”) and the opposite side thereof. (Hereinafter, simply referred to as “non-skin facing surface”).
  • the sanitary napkin 10 includes a top sheet 11 positioned on the skin facing surface side, a back sheet 12 positioned on the non-skin facing surface side, and a liquid-absorbent structure interposed between the top sheet 11 and the back sheet 12. 20.
  • the top sheet 11 and the back sheet 12 include a peripheral portion 13 formed larger than the dimension of the liquid-absorbent structure 20 in the lateral direction X and the longitudinal direction Y.
  • the peripheral edge portion 13 includes both edge portions 13a in the vertical direction Y and both side edge portions 13b in the horizontal direction X.
  • the top sheet 11 and the back sheet 12 are joined at the peripheral edge portion 13 by a known joining means, for example, a hot melt adhesive (not shown) applied between them.
  • a hot melt adhesive not shown
  • the hatched portion 18 is joined by welding the top sheet 11 and the back sheet 12 containing thermoplastic synthetic resin to each other as will be described later. It is.
  • the surface sheet 11 covers the skin-facing surface of the liquid-absorbent structure 20, and is a fiber nonwoven fabric that contains a thermoplastic synthetic resin and has liquid permeability. Can be used.
  • a thermoplastic synthetic resin polyethylene, polypropylene, a composite thereof, polyethylene terephthalate, or the like can be used.
  • the top sheet 11 has a mass of about 10 to 50 g / m 2 and a thickness of about 0.5 to 2.0 mm.
  • a pair of side sheets 14 is provided so as to be symmetric with respect to the virtual vertical center line P.
  • a liquid-permeable or liquid-impervious fibrous nonwoven fabric containing a thermoplastic synthetic resin can be used for the side sheet 14.
  • the sanitary napkin 10 is composed of a side sheet 14, a top sheet 11, and a back sheet 12, and is separated from the virtual vertical center line P at the center in the vertical direction Y, and from the side edges 13b to the horizontal X It has a pair of wing part 15 formed so that it might protrude.
  • a portion 19 indicated by hatching is joined by welding a top sheet 11, a back sheet 12, and a side sheet 14 containing a thermoplastic synthetic resin to each other.
  • the back sheet 12 covers the non-skin facing surface of the liquid-absorbent structure 20, and a plastic film containing a thermoplastic synthetic resin can be used. Moreover, what laminated
  • the fiber nonwoven fabric for example, a spunbond / meltblown / spunbond (SMS) fiber nonwoven fabric, an air-through fiber nonwoven fabric, a point bond fiber nonwoven fabric, a spunbond fiber nonwoven fabric and the like can be used.
  • the thermoplastic synthetic resin for example, the above-described synthetic resin such as polyethylene can be used.
  • the back sheet 12 has a mass of about 10 to 50 g / m 2 and a thickness of about 0.1 to 1.0 mm.
  • FIG. 4 is a bottom view of the liquid-absorbent structure 20 in the course of manufacturing the sanitary napkin 10 as seen from the non-skin facing surface side
  • FIG. 5 is an enlarged cross-sectional view taken along line VV in FIG. 6 is an enlarged view of a part of FIG.
  • FIG. 7 is an enlarged view of the portion shown in FIG. 6 as viewed from the skin facing surface side.
  • the liquid-absorbent structure 20 includes a first sheet 21 located on the skin facing surface side, a second sheet 22 located on the non-skin facing surface side, and a body fluid interposed between the first sheet 21 and the second sheet 22. And an absorbent core 23.
  • the first sheet 21 and the second sheet 22 have a length dimension larger than that of the core member 23 in the longitudinal direction Y and the transverse direction X, and a portion extending from the core member 23 is at least one of the sheets 21 and 22. They are joined together by an applied adhesive such as a hot melt adhesive.
  • the first sheet 21 covers the skin-facing surface of the core material 23, and includes a thermoplastic synthetic resin and is a liquid-permeable fiber nonwoven fabric.
  • a thermoplastic synthetic resin for example, the above-described synthetic resin such as polyethylene can be used.
  • an air-through fiber nonwoven fabric is used for the first sheet 21. If an air through fiber nonwoven fabric is used for the first sheet 21, the first sheet 21 is soft when it comes into contact with the skin.
  • the first sheet 21 has a mass of about 15 to 60 g / m 2 , for example.
  • seat 22 covers the non-skin opposing surface of the core material 23, and the plastic film containing a thermoplastic synthetic resin can be used for it. Moreover, it can replace with the plastic film and the fiber nonwoven fabric containing a thermoplastic synthetic resin can also be used.
  • the fiber nonwoven fabric for example, a spunbond / meltblown / spunbond (SMS) fiber nonwoven fabric, an air-through fiber nonwoven fabric, a point bond fiber nonwoven fabric, a spunbond fiber nonwoven fabric and the like can be used.
  • the thermoplastic synthetic resin for example, the above-described synthetic resin such as polyethylene can be used.
  • an SMS fiber nonwoven fabric is used for the second sheet 22.
  • the second sheet 22 has a mass of about 15 to 60 g / m 2 , for example.
  • the core material 23 is composed of, for example, absorbent polymer particles 24 and absorbent fibers 25.
  • the absorbent polymer particles 24 include, for example, starch-based, acrylic acid-based, amino acid-based particles or fibers, and are water-insoluble and water-swellable polymers having an absorption capacity of at least several tens of times the self-mass. Can be used.
  • natural pulp fiber such as wood fluff pulp, regenerated fiber such as rayon staple, and a mixture thereof can be used.
  • a wood fluff pulp fiber having an average length of about 2 to 10 mm can be suitably used.
  • the absorbent fiber 25 has a mass of about 100 to 300 g / m 2 , for example.
  • the core material 23 is preferably composed of the absorbent polymer particles 24 and the absorbent fibers 25 to form the core material 23.
  • the core material 23 is not an essential constituent element.
  • 24 has a mass of about 0 to 300 g / m 2 and may not be included in the core material 23.
  • a pressing recess 30 is formed that is compressed in a direction from the non-skin facing surface side to the skin facing surface side. That is, the pressing recess 30 is recessed from the non-skin facing surface toward the skin facing surface.
  • the pressing recess 30 includes a high pressing recess 31 having a relatively small dimension in the thickness direction Z and a low pressing recess 32 having a relatively large dimension in the thickness direction Z.
  • a plurality of the high-pressure recessed portions 31 are formed in a scattered manner in the vertical direction Y and the horizontal direction X. More specifically, as shown in FIG. 6, each high-pressure recessed portion 31 is formed by four component elements 31 z that are close to each other, and each component element 31 z is formed in a rectangular shape. In this embodiment, the high pressure recessed part 31 is arrange
  • the high-pressure recessed portion 31 preferably has a length dimension in the thickness direction Z of about 0.05 to 0.3 mm.
  • the low pressing recess 32 is formed so as to connect the high pressing recess 31 and the high pressing recess 31 in the vertical direction Y and the horizontal direction X. More specifically, the low-pressure squeezed recess 32 is not squeezed until the first sheet 21 and the second sheet 22 are welded to each other. By making it smaller than the inner region 33 surrounded by the recess 32, the density at the part is made larger than the density of the inner region 33, thereby improving the rigidity at the part over the rigidity of the inner region 33. As shown in FIG. 7, the low pressing recess 32 does not appear on the skin facing surface side, while the high pressing recess 31 appears on the skin facing surface side.
  • the low-pressed recess 32 preferably has a length dimension in the thickness direction Z of about 0.3 to 0.8 mm. Moreover, the low pressing recessed part 32 is arrange
  • the low-pressure concavities 32 are arranged on the sides of the regular hexagon, there are three low-pressure concavities 32 extending from the high-pressure concavities 31 with respect to the arbitrarily selected high-pressure concavities 31.
  • the low pressure depression 32 extending downward from the high pressure depression 31 is referred to as a first low pressure depression 32 p and is directed leftward from the high pressure depression 31.
  • the low-pressure recessed portion 32 extending in an inclined manner is referred to as a second low-pressure recessed portion 32q, and the low-pressure recessed portion 32 extending in an inclined manner toward the right is referred to as a third low-pressure recessed portion 32r.
  • the direction d1 in which the first low-pressure squeezed recess 32p extends from the high-pressure squeezed recess 31 and the direction d2 in which the second low-pressure squeezed recess 32q extends from the high-pressure squeezed recess 31 in the vertical direction Y and the horizontal direction X, the direction d1 in which the first low-pressure squeezed recess 32p extends from the high-pressure squeezed recess 31 and the direction d2 in which the second low-pressure squeezed recess 32q extends from the high-pressure squeezed recess 31.
  • the angle ⁇ 1 formed by and is 120 degrees, and the angle ⁇ 2 formed by the direction d1 in which the first low pressure recessed portion 32p extends from the high pressure recessed portion 31 and the direction d3 in which the third low pressure recessed portion 32r extends from the high pressure recessed portion 31 is also formed.
  • the angle ⁇ 3 formed by the direction d2 in which the second low-pressure concavity 32p extends from the high-pressure concavity 31 and the direction d3 in which the third low-pressure concavity 32r extends from the high-pressure concavity 31 is 120 degrees.
  • a plurality of low-pressure squeezed recesses 32 are arranged so that the second direction in which the squeezed concaves 32 extend is not 180 degrees, in other words, not linear.
  • the pressing recesses 30 constituted by the high-pressure pressing recesses 31 and the low-pressure pressing recesses 32 are formed at both ends in the longitudinal direction Y of the sanitary napkin 10.
  • the sanitary napkin 10 has a non-existing region 35 in which the compressed recess 30 does not exist at the center in the longitudinal direction Y, while the compressed recess 30 exists at both ends in the longitudinal direction Y.
  • a presence region 36 is formed.
  • FIG. 8 is a partial perspective view showing an embossing press process 40 that is a part of the manufacturing process of the liquid-absorbent structure 20.
  • MD indicates the machine direction
  • CD indicates the cross direction orthogonal to the machine direction MD
  • VD indicates the vertical direction orthogonal to the machine direction MD and the cross direction CD, respectively.
  • the machine direction MD corresponds to the vertical direction Y
  • the cross direction CD corresponds to the horizontal direction X
  • the vertical direction VD corresponds to the thickness direction Z.
  • the embossing press process 40 includes a transport unit 42 including a conveyor belt 41 that transports the liquid absorbent structure 20 in the machine direction MD with the liquid absorbent structure 20 placed on the upper side, and the liquid absorbent structure 20 in the vertical direction (thickness direction Z). It is comprised from the pressing part 43 which squeezes to VD.
  • the liquid absorbing structure 20 is placed on the conveyor belt 41 so that the first sheet 21 contacts the conveyor belt 41.
  • the liquid-absorbent structure 20 placed on the conveyor belt 41 is formed by covering the core material 23 formed by the absorbent fibers 25 and the absorbent polymer particles 24 with the first and second sheets 21 and 22 and being substantially uniform. The required thickness is formed.
  • the density of the absorbent fibers 25 and the absorbent polymer particles 24 is substantially uniform in the longitudinal direction Y and the transverse direction X.
  • the pressing part 43 has rotating shafts 44a and 45a that are parallel to each other.
  • the pressing portion 43 is disposed above in FIG. 8, and is disposed below the cylindrical first drum 44 that can rotate around the first rotating shaft 44a.
  • the cylindrical second drum 45 is rotatable around the second rotation shaft 45a.
  • a clearance 46 is formed between the first drum 44 and the second drum 45 by arranging the drums 44 and 45 so that their peripheral surfaces are larger than 0 mm and separated by 2.0 mm or less. is there.
  • a peripheral surface portion 44d having a constant distance from the axis of the first rotation shaft 44a along the direction around the axis of the first rotation shaft 44a is separated from the rotation shaft 44a. In this way, protruding portions 44e protruding from the peripheral surface 44z are alternately formed.
  • the peripheral surface 45z of the second drum is formed so that the distance from the axis of the second rotation shaft 45a is constant.
  • the protruding portion 44e is composed of a pin disposed so as to correspond to the high-pressure recessed portion 31 and a straight portion disposed so as to correspond to the low-pressure recessed portion 32.
  • the first drum 44 includes a heating unit (not shown) that heats the protrusion 44e so that heat can be applied to the liquid absorbent structure 20 during the embossing press step 40.
  • This heating unit is configured such that the surface temperature of the protrusion 44e is about 80 to 100 ° C.
  • the first drum 44 and the second drum are rotated while the first drum 44 is rotated in one direction d4 around the first rotation shaft 44a, and the second drum 45 is rotated in one direction d5 around the second rotation shaft 45a.
  • the liquid-absorbing structure 20 is passed through the clearance 46 between the liquid-absorbing structure 45 and the liquid-absorbing structure 20, the liquid-absorbing structure 20 is moved in the vertical direction VD by the protrusion 44 e of the first drum 44 and the peripheral surface of the second drum 45.
  • region 36 which is squeezed and has the pressing recessed part 30 is formed.
  • the high-pressure recessed portion 31 is formed by the pin of the first drum 44 and the peripheral surface of the second drum 45, and the low portion is reduced by the straight portion of the first drum 44 and the peripheral surface of the second drum 45.
  • a pressing recess 32 is formed.
  • the internal region 33 in the presence region 36 is not substantially squeezed in the vertical direction VD.
  • the liquid absorbent structure 20 is sandwiched between the peripheral surface portion 44z of the first drum 44 and the peripheral surface 45z of the second drum 45, the liquid-absorbing structure 20 is not substantially squeezed in the vertical direction VD. 35 is formed.
  • the clearance 46 between the first drum 44 and the second drum 45 is provided with a core material 23 having a mass of about 200 g / m 2 made of only absorbent fibers 25, for example, in the vertical direction VD.
  • the dimension in the thickness direction Z of the high pressure depression 31 is about 0.1 to 0.2 mm
  • the low pressure depression 32 The dimension in the thickness direction Z of the inner region 33 and the non-existing region 35 is about 2.0 mm.
  • the largest first compression force is applied, thereby forming the high-pressure recessed portion 31 having the smallest dimension in the thickness direction Z, and the second largest second compression force is applied.
  • the recess 32 is formed, and substantially no compressive force is applied, whereby the non-existing region 35 and the inner region 33 having the largest dimension in the thickness direction Z are formed.
  • the density of the absorbent fibers 25 in the high-pressure recessed portions 31 is relatively high based on the magnitude of the compressive force applied in this way, and then the density of the absorbent fibers 25 in the low-pressure recessed portions 32 is high, but not present.
  • the density of the absorbent fibers 25 in the region 35 and the inner region 33 is low.
  • the density of the absorbent fiber 25 is high, the diffusion rate of body fluid is improved.
  • the density of the absorbent polymer particles 24 and the absorbent fibers 25 is low, although depending on the degree, the diffusion rate of the body fluid decreases, but the volume of the body fluid that can be absorbed and held increases.
  • an adhesive such as a hot melt adhesive is applied to the non-skin facing surface side of the first sheet 21, and the hot melt adhesive is applied to the skin facing surface side of the second sheet 22. Apply an adhesive.
  • the liquid absorbent structure 20 formed in this manner includes a surface sheet 11 having a side sheet 14 attached to the skin facing surface side, and the skin facing surface side of the liquid absorbent structure 20.
  • the back sheet 12 is laminated on the non-skin facing surface side of the liquid absorbent structure 20.
  • an adhesive such as a hot-melt adhesive is applied to at least one of the non-skin facing surface side of the top sheet 11 and the skin facing surface side of the liquid absorbing structure 20, and the liquid absorbing structure 20.
  • An adhesive such as a hot melt adhesive is applied to at least one of the non-skin facing surface side and the skin facing surface side of the back sheet 12.
  • the compressed groove 50 that is recessed from the skin facing surface side toward the non-skin facing surface side is formed.
  • the compressed groove 50 welds, for example, the top sheet 11 and the first sheet 21 in the thickness direction Z, but the second sheet 22 and the back sheet 12 are bonded to the other sheets 11 and 21.
  • the sheets 11 and 21 and the liquid-absorbent structure 20 are formed so as to be compressed in the thickness direction Z without being welded to each other.
  • the compressed groove 50 there is an exception to be described later with respect to the place 53a adjacent to the low pressure recessed portion 32.
  • the compressed groove 50 has an inner compressed groove 51 disposed so as to be close to the intersection O where the virtual horizontal center line Q and the virtual vertical center line P intersect, and the intersection O. And an outer compressed groove 55 disposed so as to be separated from each other.
  • the inner compressed groove 51 is symmetrical with respect to the virtual vertical center line P and is paired with the pair of first grooves 52 extending in the vertical direction Y, and symmetrical with respect to the virtual horizontal center line Q, and is paired with each extending in the horizontal direction X.
  • An inner pressing groove 51 is formed so that the first groove 52 and the second groove 53 are not continuous.
  • a part 53 a of the second groove 53 is arranged in the longitudinal direction Y so as to be adjacent to the boundary 37 between the non-existing region 35 and the existing region 36 of the liquid absorbent structure 20. is there. Accordingly, in the part 53a of the second groove 53, in the thickness direction Z, the low pressure recessed portion 32 and the second groove 53 overlap, and the first sheet 21, the second sheet 22, and the top sheet 11 are welded. Has been.
  • the outer compressed groove 55 is symmetrical with respect to the virtual longitudinal center line P, and is symmetrical with respect to the pair of third grooves 56 that extend in the longitudinal direction Y, and symmetrical with respect to the virtual transverse center line Q, and extends in the lateral direction X.
  • a fourth groove 57 is provided, and an outer compressed groove 55 is formed so that the third groove 56 and the fourth groove 57 are continuous. However, in FIG. 1, the upper fourth groove 57 in FIG. 1 is omitted.
  • the compressed recess 30 compressed in the thickness direction Z is formed in a part of the liquid-absorbent structure 20, and therefore, at the site where the compressed recess 30 is formed, The dimension in the thickness direction Z can be reduced, and the softness can be maintained at a site where the compressed recess 30 is not formed.
  • the pressing recessed part 30 squeezed in a direction from the non-skin facing surface side to the skin facing surface side is formed in a part of the liquid absorbing structure 20, the skin of the liquid absorbing structure 20 It is not necessary to form the pressing recessed part 30 in the surface sheet 11 arrange
  • the pressing recess 30 includes a high pressing recess 31 having a relatively small dimension in the thickness direction Z and a low pressing recess 32 having a relatively large dimension in the thickness direction Z.
  • a plurality of low compression depressions 32 are formed so as to be scattered in the vertical direction Y and the horizontal direction X, and the high compression depressions 31 and the high compression depressions 31 are formed so as to be connected in the vertical direction Y and the horizontal direction X. Therefore, the pressing recess 30 constituted by the high pressing recess 31 and the low pressing recess 32 is continuous in the horizontal direction X and the vertical direction Y.
  • the compressive recessed part 30 is tightly entangled with the absorbent fibers 25 and has a high rigidity, even if a force is applied to the sanitary napkin 10 when the wearer wears the sanitary napkin 10, the compressed recessed part 30. Is continuous, the rigidity can be improved, and the sanitary napkin 10 can be prevented from being bent or bent.
  • the high pressing recessed part 31 is formed so that the 1st sheet
  • the low pressing recessed part 32 is formed so that the high pressing recessed part 31 and the high pressing recessed part 31 may be connected in the vertical direction Y and the horizontal direction X, and the 1st sheet
  • a first direction in which arbitrarily selected low-pressure squeezed recesses 32 extend and a low-pressure squeezed recess 32 arbitrarily selected from the remaining low-pressure squeezed recesses 32 extend Since the plurality of low-pressure concavities 32 are formed so as not to be linear with the second direction, the low-pressure concavities 32 can be prevented from continuously extending in a specific direction. Therefore, the sanitary napkin 10 can be prevented from bending in a specific direction. Therefore, the sanitary napkin 10 can be prevented from bending along the longitudinal direction Y.
  • the non-existing region 35 where the compressed recess 30 does not exist is formed at the center in the longitudinal direction Y, it is possible to prevent the body fluid that can be absorbed and retained from decreasing at the center in the longitudinal direction Y. Can do. Further, the sanitary napkin 10 can be brought into close contact with the genital by increasing the dimension in the thickness direction Z at the center in the longitudinal direction Y.
  • maintained in the center of the vertical direction Y by the pressing recessed part 30 is formed. It can be quickly moved in the vertical direction Y. Therefore, it is possible to prevent the bodily fluid from being unevenly distributed in the center in the longitudinal direction Y, and thus the volume of the bodily fluid that can be actually absorbed and held by the sanitary napkin 10 is absorbed and held. Can approach the capacity that can be. Accordingly, the volume of body fluid that can be absorbed and retained by the sanitary napkin 10 can be increased. As a result, the body fluid can be prevented from returning. Furthermore, by forming the existence regions 36 at both ends in the longitudinal direction Y, the rigidity of the both end portions can be improved, so that the occurrence of twisting or bending at this portion can be prevented.
  • the second groove 53 of the inner pressing groove 51 that is compressed in a direction from the skin facing surface side toward the non-skin facing surface side so as to extend in the lateral direction X. Since it forms, the rigidity of the site
  • the part 53a of the second groove 53 described above is arranged in the longitudinal direction Y so as to be adjacent to the boundary 37 between the non-existing region 35 and the existing region 36 of the liquid-absorbent structure 20, and the second In the part 53a of the groove 53, the top sheet 11, the first sheet 21, and the second sheet 22 are welded, so that the body fluid can be diffused from the skin facing surface side to the non-skin facing surface side.
  • the body fluid can be diffused on the non-skin facing surface side by the compressed recesses 30 formed at both ends in the longitudinal direction Y, the appearance of body fluid on the skin facing surface side is reduced and the body fluid is excreted. Can reduce the sense of incongruity.
  • the pressing groove 50 which appears on the skin facing surface side can be suppressed, a sense of incongruity when worn can be suppressed.
  • an air-through fiber nonwoven fabric is used for the first sheet 21, and an SMS fiber nonwoven fabric is used for the second sheet 22.
  • the air-through fiber nonwoven fabric and the SMS fiber nonwoven fabric have water resistance.
  • natural pulp fiber is used for the absorbent fiber 25
  • the hydrogen bond of the natural pulp fiber is dissociated.
  • a fiber nonwoven fabric having water resistance is used for the first sheet 21 and the second sheet 22, and the first sheet 21, the second sheet 22, and the core material 23 are made high. Since it integrates with the pressing recessed part 31, the core material 23 is reinforced with the 1st sheet
  • FIG. 10 is a bottom view of the liquid-absorbent structure 20a of the sanitary napkin 100 showing the first modified example of the absorbent article according to the present invention as seen from the non-skin facing surface side. Since the basic configuration of the first modification is the same as that of the sanitary napkin 10 described above, only differences will be described below.
  • a pressing recess 30a is formed that is compressed in a direction from the non-skin facing surface to the skin facing surface.
  • the pressing recess 30a includes a high-pressure pressing recess 31a having a relatively small dimension in the thickness direction Z and a low-pressure pressing recess 32a having a relatively large dimension in the thickness direction Z.
  • This high pressing recess 31a differs from the high pressing recess 31 described above only in that it is arranged at the apex of the parallelogram. These parallelograms are adjacent to each other, but have different side lengths.
  • the low pressing recess 32a is different from the above-described low pressing recess 32 only in that it is arranged on the side of the parallelogram.
  • This liquid-absorbing structure 20a has four low-pressure depressions 32a extending from the high-pressure depression 31a with respect to the arbitrarily selected high-pressure depression 31a.
  • the low-pressure squeezed recess 32 extending upward in FIG. 10 from a certain high-pressure squeezed recess 31 a is called a first low-pressure squeezed recess 32 l and extends in a manner inclined toward the left.
  • a second low-pressure squeezed recess 32m the low-pressure squeeze recess 32 extending in a manner inclined to the right is referred to as a third low-pressure squeeze recess 32n, and the low-pressure squeeze recess 32 extending downward is referred to as a fourth low-pressure squeezed recess It is called 32o.
  • the angle formed by the direction d11 in which the first low-pressure recessed portion 32l extends from the high-pressure recessed portion 31 and the direction d14 in which the fourth low-pressure recessed portion 32o extends from the high-pressure recessed portion 31 is not 180 degrees.
  • the angle formed by the direction d12 in which the second low-pressure recessed portion 32m extends from the high-pressure recessed portion 31 and the direction d13 in which the third low-pressure recessed portion 32n extends from the high-pressure recessed portion 31 is not 180 degrees. Further, the angle formed by any one of the directions d11 to d14 and the remaining directions d11 to d14 is not 180 degrees.
  • this liquid absorbent structure 20 a in the four low-pressure recessed portions 32 extending from the high-pressure recessed portion 31, the first direction in which the arbitrarily selected low-pressure recessed portion 32 extends and the low pressure arbitrarily selected from the remaining low-pressure recessed portions 32.
  • Four low pressure recessed portions 32l, 32m, 32n, and 32o are arranged around the high pressure recessed portion 31 so that the second direction in which the compressed recessed portion 32 extends is not 180 degrees, in other words, not linear. is there. Therefore, since the low pressure recessed part 32a extended from the high pressing recessed part 31a can prevent extending continuously in a specific direction, it can prevent that the sanitary napkin 10 bends in a specific direction.
  • FIG. 11 is a bottom view of the liquid-absorbent structure 20b of the sanitary napkin 200 showing the second modified example of the absorbent article according to the present invention as seen from the non-skin facing surface side. Since the basic configuration of the second modification is the same as that of the sanitary napkin 10 described above, only differences will be described below.
  • a pressing recess 30b that is compressed in a direction from the non-skin facing surface to the skin facing surface.
  • the pressing recess 30b includes a high pressing recess 31b having a relatively small dimension in the thickness direction Z and a low pressing recess 32b having a relatively large dimension in the thickness direction Z.
  • This high-pressure recessed portion 31b is different from the high-pressure recessed portion 31 described above only at the points arranged at the vertices of two different shapes of rhombuses 201 and 202.
  • one rhombus 201 has a crossing angle between adjacent sides of 72 degrees and 108 degrees, while the other rhombus 202 has a crossing angle between adjacent sides of 36 degrees.
  • These rhombuses 201 and 202 are arranged in a so-called Penrose tile format.
  • the low pressure recessed part 32b differs from the low pressure recessed part 32 mentioned above only in the point arrange
  • This liquid-absorbent structure 20 has a case where there are four low-pressure depressions 32b extending from the high-pressure depression 31b and five low-pressure depressions 32b extending from the high-pressure depression 31b with respect to a certain high-pressure depression 31b. There is a case to do. In any case, since the rhombuses 201 and 202 having two different shapes are arranged in a Penrose tile form, the arbitrarily selected low-pressure depressions are a plurality of low-pressure depressions 32b extending from the high-pressure depression 31b.
  • a plurality of low-pressure concavities 32 are arranged so that the first direction in which 32b extends and the second direction in which the low-pressure concavities 32 arbitrarily selected from the remaining low-pressure concavities 32 extend are not linear. Therefore, since the low pressure recessed part 32b extended from the high pressure recessed part 31b can prevent extending continuously in a specific direction, it can prevent that the sanitary napkin 10 bends in a specific direction.
  • FIG. 12 is a bottom view of the liquid-absorbent structure 20c of the sanitary napkin 300 showing the third modification of the absorbent article according to the present invention as viewed from the non-skin facing surface side. Since the basic configuration of the third modification is the same as that of the sanitary napkin 10 described above, only differences will be described below.
  • a pressing recess 30c is formed that is compressed in a direction from the non-skin facing surface to the skin facing surface.
  • the pressing recess 30c includes a high pressing recess 31c having a relatively small dimension in the thickness direction Z and a low pressing recess 32c having a relatively large dimension in the thickness direction Z.
  • the low pressing recess 32c is formed in a curved shape so as to connect the high pressing recess 31c and the high pressing recess 31c in the vertical direction Y and the horizontal direction X.
  • This liquid-absorbing structure 20c has a plurality of low-pressure depressions 32c extending from the high-pressure depression 31c with respect to the arbitrarily selected high-pressure depression 31c.
  • a plurality of low-pressure squeezing recesses 32c are arranged around the high-pressure squeezing recesses 31c so that the second direction in which the squeezing recesses 32c extend is not 180 degrees, in other words, not to be linear.
  • the sanitary napkin 10 can be prevented from bending in a specific direction.
  • the low pressing recessed part 32c of this example is formed in the curve shape, it can prevent that a linear bending generate
  • the low pressing recessed part 32c may include not only curved shape but a linear thing suitably.
  • the sanitary napkin 10, 100, 200, 300 can be appropriately changed within the scope of the present invention, and is not limited to the above-described embodiment.
  • the present invention is not limited to the sanitary napkin 10 or the like, and may be applied to light incontinence pads, panty liners, vaginal absorption pads, urine absorption pads, paper diapers, and the like.
  • the high-pressure recessed portion 31 and the low-pressure recessed portion 32 are formed by compressing in the thickness direction Z, but it is not always necessary to compress and form them.
  • these recessed parts 31 and 32 are demonstrated.
  • the method of forming is not limited to the method described above.
  • the members constituting the sanitary napkin 10, 100, 200, 300 include, in addition to the materials described in this specification, known members that are commonly used in this type of field. The material can be used without limitation.
  • a liquid-permeable topsheet 11 having a transverse direction X, a longitudinal direction Y, and a thickness direction Z perpendicular to each other, disposed on one side of the thickness direction Z and positioned on the skin-facing surface side of the wearer, and a thickness
  • a sanitary napkin 10 provided with a back sheet 12 that is disposed on the other side in the length direction Z and located on the non-skin facing surface side of the wearer, and a liquid-absorbent structure 20 interposed between the top sheet 11 and the back sheet 12.
  • the liquid absorbent structure 20 includes a liquid-permeable first sheet 21 located on the skin facing surface side, a second sheet 22 located on the non-skin facing surface side, and the first sheet 21 and the second sheet 22.
  • a body fluid-absorbing core material 23 interposed therebetween, and a compressed recess 30 that is compressed in a direction from the non-skin facing surface side to the skin facing surface side is formed in a part of the liquid absorbing structure 20.
  • the pressing recessed part 30 is the high pressing recessed part 3 whose length dimension of the thickness direction Z is relatively small.
  • a low-pressure squeezed recess 32 having a relatively large length dimension in the thickness direction Z.
  • a plurality of high-pressure squeezed recesses 31 are formed in a scattered manner in the vertical direction Y and the horizontal direction X.
  • the sanitary napkin 10 is characterized in that the pressing recess 32 is formed so as to connect the high pressing recess 32 and the high pressing recess 32 in the vertical direction Y and the horizontal direction X.
  • the invention disclosed in the above paragraph 0090 can include at least the following embodiments.
  • a plurality of low-pressure depressions 32 are arranged around the high-pressure depression 31 so that the extending second direction is not linear.
  • a pressing groove 50 is formed that is compressed in the direction from the skin facing surface side to the non-skin facing surface side so as to extend in the lateral direction X. .
  • the first sheet 21, the second sheet 22, and the top sheet 11 each include a thermoplastic synthetic resin, and the compressed recess 30 is formed by welding the first sheet 21 and the second sheet 22,
  • the compressed groove 50 is formed by welding the first sheet 21 and the top sheet 11, and the first sheet 21 is formed at a location 53 a where the compressed recess 30 and the second groove 53 of the compressed groove 50 are adjacent to each other.
  • the second sheet 22 and the top sheet 11 are welded.

Landscapes

  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Physics & Mathematics (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Laminated Bodies (AREA)
PCT/JP2012/073825 2011-09-30 2012-09-18 吸収性物品 WO2013047268A1 (ja)

Priority Applications (3)

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CN201280047486.3A CN103826585B (zh) 2011-09-30 2012-09-18 吸收性物品
KR1020147010289A KR101972622B1 (ko) 2011-09-30 2012-09-18 흡수성 물품
AU2012317826A AU2012317826B2 (en) 2011-09-30 2012-09-18 Absorbent article

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JP2011-218501 2011-09-30
JP2011218501A JP6008485B2 (ja) 2011-09-30 2011-09-30 吸収性物品

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Cited By (3)

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US9987176B2 (en) 2013-08-27 2018-06-05 The Procter & Gamble Company Absorbent articles with channels
US10022280B2 (en) 2012-12-10 2018-07-17 The Procter & Gamble Company Absorbent article with high absorbent material content
US10335324B2 (en) 2013-08-27 2019-07-02 The Procter & Gamble Company Absorbent articles with channels

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RU2606570C2 (ru) * 2011-07-07 2017-01-10 Као Корпорейшн Поглощающее изделие
JP6341719B2 (ja) * 2014-03-26 2018-06-13 ユニ・チャーム株式会社 吸収性物品
JP6320827B2 (ja) * 2014-04-09 2018-05-09 ユニ・チャーム株式会社 吸収性物品
JP6188644B2 (ja) * 2014-06-30 2017-08-30 ユニ・チャーム株式会社 使い捨ての開放型のおむつ
GB201610184D0 (en) * 2016-06-10 2016-07-27 Eumar Tech Ltd Product
JP6320467B2 (ja) * 2016-07-08 2018-05-09 ユニ・チャーム株式会社 吸収性物品
WO2018230013A1 (ja) * 2017-06-14 2018-12-20 王子ホールディングス株式会社 吸収体複合体
WO2019235575A1 (ja) * 2018-06-06 2019-12-12 ユニ・チャーム株式会社 低体重児用吸収パッド、及び、低体重児用吸収パッドのパッケージ
US10890172B2 (en) 2018-06-18 2021-01-12 White Knight Fluid Handling Inc. Fluid pumps and related systems and methods

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JP2003033397A (ja) 2001-07-25 2003-02-04 Daio Paper Corp 吸収性物品
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JP2003033397A (ja) 2001-07-25 2003-02-04 Daio Paper Corp 吸収性物品
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US10022280B2 (en) 2012-12-10 2018-07-17 The Procter & Gamble Company Absorbent article with high absorbent material content
US12016761B2 (en) 2012-12-10 2024-06-25 The Procter & Gamble Company Absorbent article with high absorbent material content
US9987176B2 (en) 2013-08-27 2018-06-05 The Procter & Gamble Company Absorbent articles with channels
US10335324B2 (en) 2013-08-27 2019-07-02 The Procter & Gamble Company Absorbent articles with channels
US10736794B2 (en) 2013-08-27 2020-08-11 The Procter & Gamble Company Absorbent articles with channels
US11406544B2 (en) 2013-08-27 2022-08-09 The Procter & Gamble Company Absorbent articles with channels
US11612523B2 (en) 2013-08-27 2023-03-28 The Procter & Gamble Company Absorbent articles with channels
US11759376B2 (en) 2013-08-27 2023-09-19 The Procter & Gamble Company Absorbent articles with channels

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KR101972622B1 (ko) 2019-04-25
AU2012317826A1 (en) 2014-04-03
AU2012317826B2 (en) 2016-09-29
JP6008485B2 (ja) 2016-10-19
JP2013078366A (ja) 2013-05-02
CN103826585B (zh) 2015-10-14
CN103826585A (zh) 2014-05-28
KR20140067138A (ko) 2014-06-03

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