WO2009096108A1 - 吸収性物品 - Google Patents
吸収性物品 Download PDFInfo
- Publication number
- WO2009096108A1 WO2009096108A1 PCT/JP2008/072909 JP2008072909W WO2009096108A1 WO 2009096108 A1 WO2009096108 A1 WO 2009096108A1 JP 2008072909 W JP2008072909 W JP 2008072909W WO 2009096108 A1 WO2009096108 A1 WO 2009096108A1
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- WO
- WIPO (PCT)
- Prior art keywords
- extension part
- absorbent article
- extending
- sheet
- elastic member
- Prior art date
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- 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
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- 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
- A61F13/474—Sanitary towels, incontinence pads or napkins adjustable
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- 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
- A61F13/4752—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means the means preventing fluid flow in a transversal direction the means being an upstanding barrier
- A61F13/4753—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means the means preventing fluid flow in a transversal direction the means being an upstanding barrier the barrier being not integral with the topsheet or backsheet
Definitions
- the present invention relates to an absorbent article provided with a leak-proof wall such as a sanitary napkin, a disposable diaper, and an incontinence pad.
- projection part projected on both sides from the base wall part from the side edge of an absorber is known (refer patent document 1).
- the absorbent article described in Patent Document 1 intends to prevent leakage of excrement by bringing a T-shaped leak-proof wall into contact with the wearer's body on the surface.
- the absorbent surface of the absorbent article is covered by the overhanging portion that protrudes inward from the base wall portion, and the absorption of excrement such as menstrual blood is inhibited. There was a problem.
- Patent Document 2 proposes an absorbent article having a base wall portion and a leak-proof wall having a plurality of projecting portions projecting outward from the base wall portion. According to the absorbent article described in Patent Document 2, since the plurality of overhang portions are formed so as to protrude outward, it is possible to prevent the absorption surface from being covered by the overhang portions and inhibiting the absorption of the liquid, Each of the plurality of overhang portions hardly contacted the wearer's body, and the fit was not sufficient.
- JP-A-1-68503 Japanese Patent Laid-Open No. 2000-140009
- an object of the present invention is to provide an absorbent article that is excellent in fit in an absorbent article having a leak-proof wall and can reliably prevent side leakage of excrement such as menstrual blood.
- the rigidity of the first extension part and the second extension is achieved by making the rigidity of the protruding portion different and making the tension of the elastic member arranged in the first extending portion different from the tension of the elastic member arranged in the second extending portion.
- the present inventors have found that this can be done and have completed the present invention. More specifically, the present invention provides the following.
- a surface layer including a surface sheet, a back surface layer including a back sheet, an absorption layer including a vertically long absorber disposed between the two, and the length of the absorber near both side edges of the absorber A pair of leak-proof walls provided so as to extend along a direction, each of the pair of leak-proof walls from the surface layer to the thickness of the absorbent article.
- the second elastic member extends in the longitudinal direction of the absorbent article and extends outward in the direction.
- the first extension part is formed on the front side which is one side in the longitudinal direction of the first extension part and is joined to the surface layer, and the first extension part.
- a first rear joining portion formed on the rear side that is the other side in the longitudinal direction of the portion and joined to the surface layer, and the second extension portion is the longitudinal portion of the second extension portion.
- a distance between the second front joint portion and the second rear joint portion is shorter than a distance between the first front joint portion and the first rear joint portion.
- the skin absorbent surface side of the top sheet is further provided with a vertically long top absorbent body arranged along the longitudinal direction of the absorbent article according to any one of (1) to (3).
- Absorbent article is
- the leak-proof wall includes a sheet member, the first elastic member, and the second elastic member, and the sheet member is formed by folding the sheet member.
- the first elastic member and the second elastic member are disposed so as to be sandwiched between layers in the two-layer structure, and the second extension portion is disposed between the layers.
- the absorbent article according to any one of (1) to (4), wherein the sheet member on which the elastic member is arranged is folded.
- the second elastic member is disposed between the layers of the sheet member located on the non-skin contact surface side in the second extending portion formed by folding the sheet member having a two-layer structure.
- a second extending end that is an end portion in the extending direction of the second extending portion is positioned above a first extending end that is an end portion in the extending direction of the first extending portion.
- an absorbent article that has excellent fit and can reliably prevent side leakage of excrement such as menstrual blood.
- FIG. 1 is a perspective view of a sanitary napkin as a first embodiment of the absorbent article of the present invention in a natural state.
- FIG. 2 is a plan view of the sanitary napkin shown in FIG. 1 as seen from the surface sheet side in a natural state.
- 3 is a cross-sectional view taken along line XX in FIG.
- FIG. 4 is a partially enlarged view of FIG. 5 is a cross-sectional view taken along line YY in FIG.
- FIG. 6 is a perspective view in the natural state of the sanitary napkin as 2nd Embodiment of the absorbent article of this invention.
- FIG. 7 is a plan view of the sanitary napkin shown in FIG. 6 as seen from the surface sheet side in a natural state.
- FIG. 8 is a sectional view taken along line XX in FIG.
- the present invention is applied to a sanitary napkin.
- the sanitary napkin 1 has a vertically long shape as shown in FIGS. 1 to 3, and a liquid-permeable top sheet 2 as a surface layer and a liquid-impermeable as a back layer.
- Back sheet 3 and an absorbent body 4 as a liquid-retaining absorbent layer interposed between both of them.
- a pair of leak-proof walls 5 and 5 are arranged on both sides in the longitudinal direction on the surface sheet 2 side of the sanitary napkin 1. As shown in FIG. 3, the pair of leak-proof walls 5, 5 stands in the thickness direction of the sanitary napkin 1 from the surface layer in the vicinity of the side edge of the absorbent body 4.
- a surface layer is a layer which comprises the skin contact surface which is a surface of the side contact
- the surface layer also includes a second sheet (not shown) disposed between the surface sheet 2 and the absorber 4.
- a back surface layer is a layer which comprises the non-skin contact surface which is a surface located on the opposite side to a skin contact surface at the time of wearing of the sanitary napkin 1, and in 1st Embodiment, a back surface layer is the back sheet 3 Is the main constituent.
- the absorbent layer includes the absorbent body 4 and a core wrap material (not shown) that covers the absorbent body 4.
- the sanitary napkin 1 is disposed on the abdomen of the excretory part facing part A, which is a part facing the excretion part of the wearer when worn, and on the stomach side of the excretion part facing part A when worn. And a rear part C disposed on the back side of the excretory part facing part A when worn.
- the top sheet 2 covers the entire upper surface of the absorber 4 as shown in FIGS. 2 and 3.
- the back sheet 3 covers the entire lower surface of the absorber 4.
- the back sheet 3 extends outward in the width direction from the side edge of the absorbent body 4 in the excretory part facing part A to form part of a pair of wings 6 and 6.
- seat member 8 which forms a pair of leak-proof walls 5 and 5 mentioned later extends in the width direction outward from each side edge of the absorber 4, and a pair of wings 6 and 6 Form a part of That is, the pair of wings 6 and 6 are formed by joining the sheet member 8 extending from the side edge of the absorber 4 and the back sheet 3.
- the top sheet 2 and the back sheet 3 respectively extend from the front and rear ends of the absorbent body 4 and are joined to each other at the extended portions.
- wing adhesive portions 9 and 9 are provided on the lower surface side of the back sheet 3 in the pair of wings 6 and 6, respectively.
- the main body adhesive part 10 is provided in the lower surface side of the back surface sheet 3 in the main-body part (area
- FIG. The main body adhesive portions 10 are provided in two rows so as to extend in the longitudinal direction of the sanitary napkin 1.
- the wing adhesive part 9 and the main body adhesive part 10 are formed by applying a hot melt adhesive on the lower surface side of the back sheet 3.
- a leak-proof groove 7 formed by integrally compacting the absorbent body 4 and the top sheet 2 is provided on the top sheet 2 side of the absorbent body 4.
- the pair of leak-proof walls 5 and 5 described above are located outward in the width direction of the leak-proof groove 7.
- the leak-proof groove 7 has a substantially symmetrical shape with respect to the longitudinal center line (not shown) of the sanitary napkin 1.
- the leakage prevention groove 7 includes a first leakage prevention groove 7 a provided from the front part B to the rear part C and a second leakage prevention groove 7 b provided in the rear part C.
- the first leakage preventing groove 7a has a vertically long annular shape.
- the 1st leak-proof groove 7a has the shape curved in convex shape outward in the width direction in the excretion part opposing part A.
- the second leak-proof groove 7b is provided outside the first leak-proof groove 7a, and has a shape curved convexly toward the rear.
- the front ends of the second leakage preventing grooves 7b are located in the vicinity of the first leakage preventing grooves 7a, respectively, but are not connected to the first leakage preventing grooves 7a.
- the pair of leak-proof walls 5, 5 arranged along both side portions of the sanitary napkin 1 includes a base wall portion 50 erected from the surface layer and a base wall portion 50.
- a first extension portion 51 formed to extend outward in the width direction of the sanitary napkin 1 from the vicinity of the upper end portion 50 a which is an end portion in the standing direction.
- the second extending portion 52 is disposed on the lower side in the thickness direction and extends outward in the width direction from the vicinity of the upper end portion 50a of the base wall portion 50.
- the second extending portion 52 is configured to have a width wider than that of the first extending portion 51. Further, the second extending end 52 a that is the end portion in the extending direction of the second extending portion 52 is located above the first extending end 51 a that is the end portion in the extending direction of the first extending portion 51. positioned.
- the pair of leak-proof walls 5 and 5 includes a sheet member 8, a plurality of first elastic members 51 b and a plurality of second elastic members 52 b.
- the sheet member 8 has a two-layer structure formed by folding the sheet member 8, and the plurality of first elastic members 51 b and the plurality of second elastic members 52 b are disposed between the layers in the two-layer structure. It is arranged to be sandwiched.
- the pair of leak-proof walls 5 and 5 fold back one strip-shaped sheet member 8 in the width direction so that the plurality of first elastic members 51b and the plurality of second elastic members 52b are included.
- the folded sheet member 8 is further folded so as to form the first extending portion 51, the second extending portion 52, and the base wall portion 50.
- the first extending portion 51 is formed on the folded end side of the folded sheet member 8.
- a plurality of first elastic members 51b are disposed in a stretched state along the longitudinal direction and at predetermined intervals in the width direction between layers of the sheet member 8 having a two-layer structure.
- three first elastic members 51b are arranged.
- the second extending part 52 is formed continuously with the first extending part 51 in the folded sheet member 8 having a two-layer structure.
- a plurality of second elastic members 52 b are arranged between the layers in the sheet member 8 having a two-layer structure, along the longitudinal direction and in the width direction. They are arranged in a stretched state at a predetermined interval.
- the second extending portion 52 is formed by further folding the sheet member 8 having a two-layer structure and joining the sheet members 8 to each other at the folded portion. That is, as shown in FIG. 4, the second extending portion 52 has a four-layer structure in which four sheet members 8 are stacked.
- the second extending portion 52 is configured such that the rigidity of the second extending portion 52 is larger than that of the first extending portion 51 in which the sheet member 8 is stacked in two layers because the sheet member 8 is stacked in four layers. ing.
- a plurality of second elastic members 52b are arranged between two layers located in the lower layer of the folded sheet member 8 having a four-layer structure. That is, in the first embodiment, the plurality of second elastic members 52b are positioned on the non-skin contact surface side in the second extending portion 52 formed by further folding the sheet member 8 having a two-layer structure. It arrange
- the hollow part 52c is formed in the 2nd extension end 52a which is the edge part of the extension direction in the 2nd extension part 52. As shown in FIG.
- the base wall portion 50 is formed continuously to the second extending portion 52 on the end portion side opposite to the folded end of the folded two-layer structure sheet member 8.
- a single base wall elastic member 50b is disposed in the base wall 50 in the vicinity of the boundary between the base wall 50 and the second extension 52, that is, in the vicinity of the upper end 50a of the base wall 50. .
- the base end of the base wall 50 is joined to the back sheet 3 via the top sheet 2 in the vicinity of the side edge of the absorber 4.
- the end of the sheet member 8 opposite to the folded end extends outward in the width direction of the absorber 4 and is joined to the back sheet 3.
- the sanitary napkin 1 In the natural state, the sanitary napkin 1 according to the first embodiment is stretched in the longitudinal direction by the force of the plurality of first elastic members 51b and the plurality of second elastic members 52b disposed on the sheet member 8 in the stretched state. It has a shape curved concavely on the skin contact surface side.
- the natural state refers to a state where no external force other than gravity is applied to the sanitary napkin 1.
- the first elastic member 51b is disposed on the sheet member 8 at a higher expansion rate than the second elastic member 52b. That is, the contraction force of the first extension part 51 is larger than the contraction force of the second extension part 52, and the first extension part 51 is compared with the second extension part 52 in the natural state. And it is in a more contracted state.
- the first elastic member 51b is disposed on the sheet member 8 in a state where it is preferably stretched to 110 to 240%, more preferably 120 to 200%.
- the second elastic member 52b is disposed on the sheet member 8 in a state where it is preferably expanded to 105 to 200%, more preferably 115 to 180%.
- both the second elastic member 52b and the first elastic member 51b are connected. Even when the sheet member 8 is disposed at the same expansion rate, the contraction force of the first extension portion 51 is made larger than the contraction force of the second extension portion 52.
- the width of the first extending portion 51 is preferably 3 to 20 mm from the viewpoint of ensuring fit with the wearer's body. Further, the width of the second extension portion 52 is preferably 5 to 30 mm from the viewpoint of suitably fitting the second extension portion 52 with the wearer's body at the outer side in the width direction than the first extension portion 51. is there.
- the height of the base wall portion 50 (the length in a state where the base wall portion 50 is extended) is preferably 5 to 30 mm from the viewpoint of sufficiently obtaining the side leakage preventing effect.
- the pair of leak-proof walls 5, 5 are provided at the front part B and the rear part C of the sanitary napkin 1, respectively, and the non-extension of the first extension part 51 and the second extension part 52.
- the skin contact surface side is joined to the surface layer.
- the first extending portion 51 has a first front joint portion 53 joined to the surface layer in the front portion B and a first rear joint portion 54 joined to the surface layer in the rear portion C. is doing.
- the 2nd extension part 52 has the 2nd front junction part 55 joined to the surface layer in the front part B, and the 2nd back junction part 56 joined to the surface layer in the back part C. .
- the 1st extension part 51 stands up between the 1st front junction part 53 and the 1st back junction part 54
- the 2nd extension part 52 is a 2nd front junction part. It stands up between 55 and the 2nd back junction part 56.
- the proximal end of the first extending portion 51 (the connecting portion between the base wall portion 50 and the first extending portion 51) and the proximal end ( The connecting portion between the base wall portion 50 and the second extending portion 52 is a sanitary napkin than the proximal end of the first extending portion 51 and the proximal end of the second extending portion 52 in the front portion B and the rear portion C. 1 is located outward in the width direction.
- the distance L2 between the second front joint portion 55 and the second rear joint portion 56 is configured to be shorter than the distance L1 between the first front joint portion 53 and the first rear joint portion 54.
- the second front joint portion 55 is provided so as to extend to the vicinity of the pair of wings 6 and 6 as compared with the first front joint portion 53.
- the constituent material of the sanitary napkin 1 of the first embodiment will be described.
- the surface sheet 2 for example, a porous or non-porous nonwoven fabric or a porous plastic sheet can be used.
- the back sheet 3 for example, a hydrophobic nonwoven fabric, a water-impermeable plastic film, or a laminate sheet of a nonwoven fabric and a water-impermeable plastic film can be used.
- an SMS nonwoven fabric sandwiched between a melt-blown nonwoven fabric having high water resistance or a strong spunbond nonwoven fabric can also be used.
- the absorber 4 what consists of a fluffy pulp, an airlaid nonwoven fabric, and a superabsorbent polymer can be used, for example.
- the fluffy pulp used in the absorbent body 4 include artificial cellulose fibers such as chemical pulp, cellulose fibers, rayon, and acetate.
- the superabsorbent polymer include starch-based, acrylic acid-based, and amino acid-based particulate or fibrous polymers.
- the sheet member 8 those having water repellency or hydrophobicity are preferably used.
- various nonwoven fabrics such as a spunlace nonwoven fabric, a spunbond nonwoven fabric, a thermal bond nonwoven fabric, a melt blown nonwoven fabric, a needle punch nonwoven fabric, and an air-through nonwoven fabric.
- synthetic fibers such as polyethylene or polypropylene such as olefin, polyester and polyamide, recycled fibers such as rayon and cupra, and natural fibers such as cotton can be used.
- the first elastic member 51b, the second elastic member 52b, and the base wall elastic member 50b may be any material that is elongated and stretchable, such as thread rubber made of natural rubber, flat rubber, urethane, ethylene-vinyl acetate, and the like.
- a thermoplastic elastomer such as a copolymer (EVA) or PE can be used. More specifically, examples of the thermoplastic elastomer include polybutadiene, polyisoprene, styrene-butadiene copolymer, styrene-isoprene copolymer, polyurethane, ethylene-vinyl acetate copolymer, ethylene- ⁇ olefin copolymer, and the like. Examples include those formed into a thread shape or formed into a film and slit into a narrow width.
- the first extending portion 51 and the second extending portion 52 that extend outward in the width direction from the vicinity of the upper end portion 50a of the base wall portion 50, respectively. Therefore, it is possible to reliably prevent the side leakage of excrement such as menstrual blood and to make the body of the sanitary napkin 1 by configuring the rigidity of the second extension part 52 to be larger than the rigidity of the first extension part 51. Fits better.
- the first extension portion 51 that is disposed above the second extension portion 52 in the leak-proof wall 5 and is configured to be narrower than the second extension portion 52 is worn. It abuts in the vicinity of the person's excretion part.
- the 2nd extension part 52 which is arranged under the 1st extension part 51 and is constituted wider than the 1st extension part 51 contacts the part near a wearer's groin part.
- the first extending portion 51 can flexibly follow the detailed movement of the body in the vicinity of the excretory portion by reducing its rigidity, and the second extending portion 52 has its rigidity reduced. By making it larger than the 1st extension part 51, it can prevent that the 2nd extension part 52 moves excessively and the side leakage of excrement arises in the vicinity of the groin part where stronger force is added.
- the second extending end 52a of the second extending portion 52 is positioned above the first extending end 51a of the first extending portion 51, the second extending end of the sanitary napkin 1 is worn.
- the contact between the extension part 52 and the wearer's body is further improved, and the side leakage prevention effect of excrement by the second extension part 52 is improved.
- the contraction force in the first extension part 51 is larger than the contraction force in the second extension part 52, the first extension part 51 is closer to the wearer's body side than the second extension part 52. It becomes easy to stand up, and the fitting property between the first extending portion 51 and the wearer's body when the sanitary napkin 1 is worn is improved.
- first extending portion 51 and the second extending portion 52 are in a state where each of the front portion B and the rear portion C extends outward in the width direction, and the non-skin contact surface side is a surface layer. It is joined. Thereby, the 1st extension part 51 and the 2nd extension part 52 are extended to the width direction outer side of the sanitary napkin 1 reliably, these fall inward in the width direction, and cover the surface of an absorption layer. Can be prevented.
- the distance L2 between the second front joint portion 55 and the second rear joint portion 56 is configured to be shorter than the distance L1 between the first front joint portion 53 and the first rear joint portion 54.
- the second extending portion 52 is more easily extended outward in the width direction of the sanitary napkin 1.
- the 1st front junction part 53 and the 1st back junction part 54 in the 1st extension part 51 are joined to the 2nd extension part 52, the 2nd extension part 52 is the width
- the first extending portion 51 is also easily extended outward in the width direction of the sanitary napkin 1.
- the 2nd front junction part 55 is provided so that it may extend to the vicinity of a pair of wings 6 and 6, the force at the time of folding back a pair of wings 6 and 6 at the time of wearing of the sanitary napkin 1 is 2nd. Easy to be transmitted to the extension 52. Therefore, the second extending portion 52 can be easily opened outward when the sanitary napkin 1 is worn, and is not easily collapsed even if a force is applied from the outside in the width direction of the sanitary napkin 1 after wearing. Further, in the standing state of the pair of leak-proof walls 5, the contraction force of the first extension part 51 is larger than the contraction force of the second extension part 52, so that the contraction force of the first extension part 51 is the base wall.
- the base end of the base wall 50 in the excretory part facing part A is positioned outside the side edges on the inner side in the width direction of the first front joint part 53 and the first rear joint part 54. Therefore, the vicinity of the upper end portion 50a of the base wall portion 50 is located outside the side edges on the inner side in the width direction of the first front joint portion 53 and the first rear joint portion 54. This makes it easy for the leak-proof wall 5 to maintain a shape that bulges outward in the width direction, so that the absorption of the excrement such as menstrual blood can be prevented by covering the absorption surface.
- the first extending portion 51 is constituted by the two-layered sheet member 8, and the second extending portion 52 is further folded back from the two-layered sheet member 8 to form a four-layered structure.
- Rigidity is greater than that.
- the leak-proof wall 5 of 1st Embodiment can be formed using the sheet
- the plurality of second elastic members 52b are disposed between the two layers of the sheet member 8 located on the non-skin contact surface side in the second extending portion 52 formed of the sheet member 8 having a four-layer structure. That is, the second elastic member 52b is not disposed between the two layers of the sheet member 8 located on the skin contact surface side in the second extending portion 52. Therefore, the touch when the 2nd extension part 52 contact
- the hollow part 52c is formed in the 2nd extension end 52a in the 2nd extension part 52, the fitting property of the 2nd extension part 52 and a wearer's body improves further.
- the sanitary napkin 1 of the second embodiment is the same as the first embodiment except that the sanitary napkin 1 is different from the first embodiment in that it includes a top absorbent body 40 disposed on the skin contact surface side of the topsheet 2. It has a configuration.
- the top absorbent body 40 has a vertically long shape, and as shown in FIGS. 6 to 8, the sanitary napkin 1 is disposed on the skin contact surface side of the topsheet 2 at the center in the width direction of the sanitary napkin 1. It is arranged along the direction.
- One end of the top absorbent body 40 is joined to the top sheet 2 at the front part B of the sanitary napkin 1 to form a fixed part 41.
- the end of the top absorbent body 40 opposite to the fixed portion is a free end.
- a temporary fixing portion 42 that can temporarily fix the top absorbent body 40 to the top sheet 2 is provided on the free end side of the top absorbent body 40.
- the top absorbent body 40 can be suitably brought into contact with the excretion part of the wearer by temporarily fastening the temporary fastening part 42 to a desired part of the topsheet 2. ing.
- the top absorbent body 40 disposed on the skin contact surface side of the top sheet 2 is more closely attached to the excretory part of the wearer. Therefore, the absorbability of excretion such as menstrual blood by the sanitary napkin 1 is further improved.
- the leakage preventing wall 5 extends from the vicinity of the base wall portion 50 and the vicinity of the upper end portion 50a thereof in the width direction, respectively, and the first extension portion 51 and the second extension portion. 52, the first extending portion 51 and the second extending portion 52 preferably come into contact with the wearer's body even when a distance is generated between the topsheet 2 and the wearer's body. Lateral leakage of excrement such as menstrual blood can be reliably prevented.
- the second extension part 52 may be configured to have a color different from that of the first extension part 51.
- the color of the second extension part 52 and the color of the first extension part 51 By differentiating the color of the second extension part 52 and the color of the first extension part 51, when menstrual blood or the like adheres to the leak-proof wall 5, menstrual blood or the like is transferred to the first extension part 51 or Which of the second extending portions 52 is attached can be easily determined, and the level of dirt on the sanitary napkin 1 can be easily grasped.
- the color of the second extension portion 52 different from the color of the first extension portion 51
- the color of the plurality of second elastic members 52b arranged in the second extension portion 52 and the first extension for example, the colors of the plurality of first elastic members 51b arranged in the protruding portion 51 may be different.
- the first elastic member 51b and the second elastic member 52b are arranged on the sheet member 8 with different expansion rates, so that the first extension is achieved.
- the contraction force of the part 51 is larger than the contraction force of the second extension part 52
- the number of the first elastic members 51 b arranged in the first extension part 51 is arranged in the second extension part 52.
- the contraction force of the first extension part 51 may be greater than the contraction force of the second extension part 52 by increasing the number of the second elastic members 52b provided.
- the first extension The contraction force of the protruding portion 51 may be greater than the contraction force of the second extension portion 52.
- the second extending portion 52 is joined to the surface layer at the second front joining portion 55 and the second rear joining portion 56, but a pair of wings 6 is further provided. , 6 may have a second central joint (not shown) joined to the surface layer in the excretory part facing part A.
- the second center joint portion in the second extension portion 52 By providing the second center joint portion in the second extension portion 52, the force when the pair of wings 6 and 6 are folded back when the sanitary napkin 1 is worn is easily transmitted to the second extension portion 52. Therefore, the 2nd extension part 52 becomes easy to open outside by the time of wearing of sanitary napkin 1, and it becomes difficult to fall down even if it receives force from the width direction outside of sanitary napkin 1 after wearing.
- the leak-proof wall 5 and the wing 6 are integrally formed by a single sheet member 8, but the wing 6 constitutes the leak-proof wall 5.
- the sheet member 8 may be composed of a different sheet.
- the absorbent article of the present invention may be an incontinence pad, a panty liner, a disposable diaper, etc. in addition to a sanitary napkin.
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Abstract
Description
しかし、特許文献1記載の吸収性物品においては、基壁部から内方へ張り出した張り出し部によって吸収性物品の吸収面が覆われてしまい、経血等の排泄物の吸収を阻害してしまうという問題があった。
一方、特許文献2には、基壁部及び該基壁部から外側に張り出す複数の張り出し部を有する防漏壁を有する吸収性物品が提案されている。
特許文献2記載の吸収性物品によれば、複数の張り出し部が外側に張り出すように形成されているため、張り出し部によって吸収面が覆われて液体の吸収を阻害することは防止できるが、複数の張り出し部それぞれが着用者の身体に当接しにくく、フィット性が十分とはいえないものであった。
2 表面シート
3 裏面シート
4 吸収体
5 防漏壁
50 基壁部
51 第1延出部
52 第2延出部
53 第1前方接合部
54 第1後方接合部
55 第2前方接合部
56 第2後方接合部
6 ウイング
7 防漏溝
8 シート部材
9 ウイング粘着部
10 本体粘着部
第1実施形態は、本発明を生理用ナプキンに適用したものである。
裏面層とは、生理用ナプキン1の着用時に肌当接面と反対側に位置する面である非肌当接面を構成する層であり、第1実施形態においては、裏面層は裏面シート3を主体として構成されている。
吸収層は、吸収体4及び該吸収体4を被覆するコアラップ材(図示せず)等を含むものである。
ウイング粘着部9及び本体粘着部10は、裏面シート3の下面側にホットメルト粘着剤を塗布することにより形成されている。
具体的には、一対の防漏壁5,5は、1枚の帯状のシート部材8を、複数の第1弾性部材51b及び複数の第2弾性部材52bが内包されるように幅方向に折り返すと共に、折り返されたシート部材8を、第1延出部51、第2延出部52及び基壁部50を形成するように更に折り畳んで構成されている。
このように、第2延出部52は、シート部材8が4層積層されていることにより、シート部材8が2層積層された第1延出部51よりも剛性が大きくなるように構成されている。
基壁部50の基端は、図4に示すように、2層構造のシート部材8が吸収体4の側縁近傍において、表面シート2を介して裏面シート3と接合されている。シート部材8における折り返し端と反対側の端部は、吸収体4の幅方向外方に延出して裏面シート3と接合されている。
具体的には、第1弾性部材51bは、好ましくは110~240%に、更に好ましくは120~200%に伸張させた状態でシート部材8に配設される。また、第2弾性部材52bは、好ましくは105~200%に、更に好ましくは115~180%に伸張させた状態でシート部材8に配設される。
尚、第1実施形態においては、第2延出部52の剛性が第1延出部51の剛性よりも大きく構成されているため、第2弾性部材52bと第1弾性部材51bとの両者を同じ伸張率でシート部材8に配設した場合においても第1延出部51の収縮力は、第2延出部52の収縮力よりも大きくなされる。
そして、生理用ナプキン1の自然状態では、第1延出部51は第1前方接合部53と第1後方接合部54との間で起立し、第2延出部52は第2前方接合部55と第2後方接合部56との間で起立する。また、起立状態においては、排泄部対向部Aにおける第1延出部51の基端(基壁部50と第1延出部51との連結部)及び第2延出部52の基端(基壁部50と第2延出部52との連結部)は、前方部B及び後方部Cにおける第1延出部51の基端及び第2延出部52の基端よりも生理用ナプキン1の幅方向外方に位置している。
第1実施形態においては、第2前方接合部55と第2後方接合部56との距離L2は、第1前方接合部53と第1後方接合部54との距離L1よりも短くなるように構成されている。
そのため、一対の防漏壁5,5においては、第2延出部52が起立している部分の長さは、第1延出部51が起立している部分の長さよりも短くなされている。
また、第2前方接合部55は、図2に示すように、第1前方接合部53に比して一対のウイング6,6の近傍にまで延びるように設けられている。
表面シート2としては、例えば有孔又は無孔の不織布や多孔性プラスティックシートを用いることができる。裏面シート3としては、例えば、疎水性の不織布、不透水性のプラスティックフィルム、不織布と不透水性プラスティックフィルムとのラミネートシートを用いることができる。また、裏面シート3として、耐水性の高いメルトブローン不織布や強度の強いスパンボンド不織布で挟んだSMS不織布を用いることもできる。
吸収体4に用いられるフラッフ状パルプとしては、例えば、化学パルプ、セルロース繊維、レーヨン、アセテート等の人工セルロース繊維が挙げられる。エアレイド不織布としては、パルプと合成繊維とを熱融着させ、又はバインダーで固着させたものが挙げられる。高吸収ポリマーとしては、デンプン系、アクリル酸系、アミノ酸系の粒子状又は繊維状のポリマーが挙げられる。
生理用ナプキン1の着用時には、防漏壁5において第2延出部52よりも上方に配置され、第2延出部52よりも幅が狭く構成されている第1延出部51は、着用者の排泄部近傍に当接する。一方、第1延出部51の下方に配置され、第1延出部51よりも幅が広く構成されている第2延出部52は、着用者の鼠径部に近い部分に当接する。
ここで、第1延出部51は、その剛性を小さくすることにより、排泄部近傍において身体の細かな動きに対して柔軟に追従可能となると共に、第2延出部52は、その剛性を第1延出部51よりも大きく構成することにより、より強い力が加わる鼠径部近傍において、第2延出部52が過剰に動いて排泄物の横漏れが生じることを防止できる。
また、第2前方接合部55は、一対のウイング6,6の近傍にまで延びるように設けられているため、生理用ナプキン1の着用時に一対のウイング6,6を折り返す際の力が第2延出部52に伝わりやすい。従って、第2延出部52は、生理用ナプキン1の着用時により外側に開きやすくなり、また、着用後に生理用ナプキン1の幅方向外方から力を受けても倒れにくい。
また、一対の防漏壁5の起立状態においては、第1延出部51の収縮力が第2延出部52の収縮力よりも大きいため、第1延出部51の収縮力が基壁部50をほぼ直立に起立させ、更に排泄部対向部Aにおける基壁部50の基端は、第1前方接合部53と第1後方接合部54の幅方向内側の側縁よりも外側に位置しているため、基壁部50の上端部50a近傍は、第1前方接合部53と第1後方接合部54の幅方向内側の側縁よりも外側に位置することになる。このことにより防漏壁5は幅方向外側に膨出するような形状を維持しやすくなるため、吸収面が覆われることにより経血等の排泄物の吸収を阻害することを防止できる。
更に、複数の第2弾性部材52bは、4層構造のシート部材8からなる第2延出部52における非肌当接面側に位置する2層のシート部材8の層間に配置されている。つまり、第2延出部52において肌当接面側に位置する2層のシート部材8の層間には第2弾性部材52bは配設されていない。従って、第2延出部52が着用者の身体に当接した際の肌触りが向上する。
トップ吸収体40は縦長形状を有しており、図6~図8に示すように、生理用ナプキン1の幅方向中央部における表面シート2の肌当接面側に、生理用ナプキン1の長手方向に沿うように配置されている。トップ吸収体40は、その一方側の端部が生理用ナプキン1の前方部Bにおいて表面シート2に接合されて固定部41を形成している。トップ吸収体40における固定部と反対側の端部は自由端となっている。また、トップ吸収体40における自由端側には、トップ吸収体40を表面シート2に仮止め可能な仮止め部42が設けられている。第2実施形態の生理用ナプキン1は、仮止め部42を表面シート2の所望の部位に仮止めすることでトップ吸収体40を着用者の排泄部に好適に当接させることが可能となっている。
第2延出部52の色彩と第1延出部51との色彩を異ならせる方法としては、例えば、第2延出部52に配置される複数の第2弾性部材52bの色と第1延出部51に配置される複数の第1弾性部材51bの色とを異ならせることが挙げられる。
また、第1実施形態及び第2実施形態においては、第2延出部52は、第2前方接合部55及び第2後方接合部56において表面層に接合されていたが、更に一対のウイング6,6が設けられている排泄部対向部Aにおいて表面層と接合される第2中央接合部(図示せず)を有していてもよい。第2延出部52に第2中央接合部を設けることにより、生理用ナプキン1の着用時に一対のウイング6,6を折り返す際の力が第2延出部52により伝わりやすくなる。そのため、第2延出部52は、生理用ナプキン1の着用時により外側に開きやすくなり、また、着用後に生理用ナプキン1の幅方向外方から力を受けても倒れにくくなる。
Claims (10)
- 表面シートを含む表面層と、裏面シートを含む裏面層と、これら両者間に配置された縦長状の吸収体を含む吸収層と、該吸収体の両側縁近傍に該吸収体の長手方向に沿って延びるように設けられた一対の防漏壁と、を備えた縦長状の吸収性物品であって、
前記一対の防漏壁それぞれは、
前記表面層から該吸収性物品の厚さ方向に起立する基壁部と、
前記基壁部における起立方向の端部である上端部近傍から該吸収性物品の幅方向外方に延出すると共に第1弾性部材が該吸収性物品の長手方向に沿うように伸張状態で配設された第1延出部と、
前記第1延出部よりも前記厚さ方向の下方側に配置され、前記基壁部における前記上端部近傍から前記幅方向外方に延出すると共に第2弾性部材が該吸収性物品の長手方向に沿うように伸張状態で配設された第2延出部と、を有しており、
前記第2延出部の剛性は、前記第1延出部の剛性よりも大きく構成されている吸収性物品。 - 前記第1延出部の収縮力は、前記第2延出部の収縮力よりも大きくなるように構成されている請求項1記載の吸収性物品。
- 前記第1延出部は、該第1延出部における前記長手方向の一方側である前方側に形成され前記表面層に接合される第1前方接合部と、該第1延出部における前記長手方向の他方側である後方側に形成され前記表面層に接合される第1後方接合部と、を有し、
前記第2延出部は、該第2延出部における前記長手方向の一方側である前方側に形成され前記表面層に接合される第2前方接合部と、該第2延出部における前記長手方向の他方側である後方側に形成され前記表面層に接合される第2後方接合部と、を有し、
前記第2前方接合部と前記第2後方接合部との距離は、前記第1前方接合部と前記第1後方接合部との距離よりも短くなるように構成されている請求項1又は2記載の吸収性物品。 - 前記表面シートの肌当接面側に、該吸収性物品の長手方向に沿うように配置される縦長状のトップ吸収体を更に備える請求項1から3のいずれかに記載の吸収性物品。
- 前記防漏壁は、シート部材と、前記第1弾性部材及び前記第2弾性部材とを有して構成され、
前記シート部材は、該シート部材が折り返されて形成された2層構造を有しており、
前記第1弾性部材及び前記第2弾性部材は、前記2層構造における層間に挟みこまれるように配置されており、
前記第2延出部は、前記層間に前記第2弾性部材が配置された前記シート部材が折り重ねられて形成されている請求項1~4のいずれかに記載の吸収性物品。 - 前記第2弾性部材は、2層構造を有する前記シート部材が折り重ねられて形成された前記第2延出部における非肌当接面側に位置する前記シート部材の前記層間に配置されている請求項5記載の吸収性物品。
- 前記第2延出部は、該第2延出部の幅が前記第1延出部の幅よりも広く形成されている請求項1~6のいずれかに記載の吸収性物品。
- 前記第2延出部は、前記第1延出部とは異なる色彩を有する請求項1~7のいずれかに記載の吸収性物品。
- 前記第2延出部における延出方向の端部である第2延出端が前記第1延出部における延出方向の端部である第1延出端よりも上方に位置する請求項1~8のいずれかに記載の吸収性物品。
- 前記第2延出部における延出方向の端部である第2延出端には中空部が形成されている請求項1~9のいずれかに記載の吸収性物品。
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CN2008801277334A CN101959481B (zh) | 2008-01-30 | 2008-12-17 | 吸收性物品 |
CA2713530A CA2713530A1 (en) | 2008-01-30 | 2008-12-17 | Absorbent article |
MX2010008342A MX2010008342A (es) | 2008-01-30 | 2008-12-17 | Articulo absorbente. |
AU2008349182A AU2008349182A1 (en) | 2008-01-30 | 2008-12-17 | Absorbent article |
EA201070865A EA018076B1 (ru) | 2008-01-30 | 2008-12-17 | Абсорбирующее изделие |
BRPI0820241A BRPI0820241A2 (pt) | 2008-01-30 | 2008-12-17 | artigo absorvente |
EP08871733.5A EP2246018A4 (en) | 2008-01-30 | 2008-12-17 | ABSORBENT ARTICLE |
US12/864,903 US20110046596A1 (en) | 2008-01-30 | 2008-12-17 | Absorbent article |
ZA2010/05900A ZA201005900B (en) | 2008-01-30 | 2010-08-18 | Absorbent article |
MA33108A MA32096B1 (fr) | 2008-01-30 | 2010-08-23 | Article absorbant |
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JP2008-018493 | 2008-01-30 | ||
JP2008018493A JP5091698B2 (ja) | 2008-01-30 | 2008-01-30 | 吸収性物品 |
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CN (1) | CN101959481B (ja) |
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BR (1) | BRPI0820241A2 (ja) |
CA (1) | CA2713530A1 (ja) |
CO (1) | CO6321213A2 (ja) |
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JP7332436B2 (ja) * | 2019-11-01 | 2023-08-23 | 花王株式会社 | 吸収性物品 |
JP7424811B2 (ja) * | 2019-12-06 | 2024-01-30 | 大王製紙株式会社 | 使い捨て着用物品 |
JP7025496B1 (ja) | 2020-08-27 | 2022-02-24 | 花王株式会社 | 吸収性物品 |
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Also Published As
Publication number | Publication date |
---|---|
EP2246018A1 (en) | 2010-11-03 |
EA018076B1 (ru) | 2013-05-30 |
CN101959481A (zh) | 2011-01-26 |
US20110046596A1 (en) | 2011-02-24 |
MA32096B1 (fr) | 2011-02-01 |
KR20100118585A (ko) | 2010-11-05 |
MY159286A (en) | 2016-12-30 |
MX2010008342A (es) | 2010-08-18 |
JP5091698B2 (ja) | 2012-12-05 |
JP2009178274A (ja) | 2009-08-13 |
CA2713530A1 (en) | 2009-08-06 |
BRPI0820241A2 (pt) | 2015-09-08 |
AU2008349182A1 (en) | 2009-08-06 |
EP2246018A4 (en) | 2014-02-19 |
CO6321213A2 (es) | 2011-09-20 |
ZA201005900B (en) | 2011-05-25 |
EA201070865A1 (ru) | 2011-04-29 |
CN101959481B (zh) | 2013-10-30 |
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