WO2012002308A1 - パンツ型の吸収性着用物品 - Google Patents
パンツ型の吸収性着用物品 Download PDFInfo
- Publication number
- WO2012002308A1 WO2012002308A1 PCT/JP2011/064644 JP2011064644W WO2012002308A1 WO 2012002308 A1 WO2012002308 A1 WO 2012002308A1 JP 2011064644 W JP2011064644 W JP 2011064644W WO 2012002308 A1 WO2012002308 A1 WO 2012002308A1
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- WO
- WIPO (PCT)
- Prior art keywords
- elastic body
- panel
- cover
- waistline
- lateral direction
- 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
- A61F13/476—Sanitary towels, incontinence pads or napkins characterised by encircling the crotch region of the undergarment
-
- 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
- A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
- A61F13/49007—Form-fitting, self-adjusting disposable diapers
- A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
- A61F13/49011—Form-fitting, self-adjusting disposable diapers with elastic means the elastic means is located at the waist region
-
- 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
- A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
- A61F13/494—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means
- A61F13/49466—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means the edge leakage prevention means being at the waist region
-
- 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
- A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
- A61F13/496—Absorbent articles specially adapted to be worn around the waist, e.g. diapers in the form of pants or briefs
-
- 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
- A61F13/51—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 outer layers
- A61F13/515—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 outer layers characterised by the interconnection of the topsheet and the backsheet
Definitions
- the present invention relates to a pants-type absorbent wearing article, and more particularly to a pants-type absorbent wearing article such as a disposable diaper, excretion training pants, and incontinence briefs.
- Patent Document 1 discloses a technique relating to a pants-type diaper as described below.
- the ventral outer layer member is a front panel that covers the wearer's front waistline region.
- the back side outer layer member is a rear panel that covers the rear waist area of the wearer.
- An absorptive member is a crotch panel which connects with a front panel and a back panel, and coats a wearer's crotch area.
- the rear panel has a rear waistline cover portion whose vertical dimension is substantially the same as that of the front panel, and at least a part of the wearer's buttocks connected to the lower side of the rear waistline cover portion. An overhanging cover portion is formed.
- the crotch panel extends in the front-rear direction and has an absorption part that absorbs bodily fluids such as urine, and a gasket having a gasket elastic body that extends in the front-rear direction along both sides of the absorption part and can be elastically contracted in the front-rear direction. Cuffs.
- the buttock cover part includes a buttock cover elastic body extending along the edge of the buttock cover part. (5) The buttock cover portion and the crotch panel are joined at the intersection of the buttock cover elastic body and the gasket elastic body.
- an object of the present invention is to provide a pants-type absorbent wearing article capable of suppressing a reduction in the area covering the wearer's buttocks by the buttocks cover.
- a pants-type absorbent wearing article is a front panel in which a wearing article having a longitudinal direction, a lateral direction, and a front-rear direction covers a wearer's front waistline region, A rear panel that covers a rear waist area of the wearer, and a crotch panel that is connected to the front panel and the rear panel and covers the wearer's crotch area, the rear panel having the longitudinal dimension A rear waistline region cover portion that is substantially the same as the size of the front panel, and a buttock cover portion that extends under the rear waistline region cover portion and covers at least a portion of the wearer's buttocks, A crotch panel having an absorbent portion extending in the front-rear direction, and a gasket cuff portion having a gasket elastic body extending in the front-rear direction along both sides of the absorbent portion and elastically shrinkable in the front-rear direction; Wherein said hip covering portion has a buttock
- a feature of the present invention is that the flange cover portion and the crotch panel are in a joined state between gasket cuff portions on both sides of the absorbing portion in the lateral direction, and are not joined in the gasket cuff portion. .
- the rear waistline cover portion includes a rear waistline elastic body that can elastically contract in the lateral direction, and the gasket elastic body, the rear waistline elastic body, The crotch panel and the rear panel are joined to each other, the front panel has a front waistline elastic body elastically contractible in the lateral direction, and the gasket elastic body and the front waistline The crotch panel and the front panel are joined to each other at a region where the region elastic body intersects.
- the buttocks cover elastic body is attached to the rear panel in an unstretched state.
- the collar cover elastic body is attached to the rear panel in a non-stretched state at least in a portion where the collar cover portion and the absorbing portion overlap each other.
- the buttock cover portion including the buttock cover elastic body and the rear waistline region cover portion including the rear waistline elastic body are small pieces having the same dimensions in the lateral direction. Is taken out, the lateral dimension of the buttock cover part in the contracted state is larger than the lateral dimension of the rear waistline cover part in the contracted state.
- the flange part cover part including the flange part cover elastic body and the rear waistline area cover part including the rear waistline elastic body are small pieces having the same dimensions in the lateral direction.
- the lateral length of the buttock cover portion in the contracted state is substantially the same as the lateral length of the rear waistline cover portion in the contracted state.
- the vertical interval of the buttocks cover elastic body is larger than the vertical interval of the rear waistline elastic body.
- the rear waistline elastic body is contractible at both side edges of the absorbent portion in the lateral direction.
- the range in which the rear waistline elastic body can contract on both side edges of the absorbent portion is 5 to 20% of the lateral dimension of the absorbent portion. is there.
- the contraction force of the gasket elastic body is applied to the buttock cover portion. It can suppress acting. Therefore, it can suppress that a buttock cover part shrink
- the gasket cuff parts on both sides of the absorption part are in a joined state, the absorption part can be prevented from moving loosely with respect to the buttock cover part.
- FIG. 5 is a sectional view taken along the line VV in FIG. 2.
- FIG. 6 is a cross-sectional view taken along the arrow VI-VI in FIG. 2.
- FIG. 3 is a cross-sectional view taken along the arrow VII-VII in FIG. 2. Explanatory drawing which shows the state which the contractile force of the elastic body acted in FIG. The expansion
- a disposable diaper (hereinafter simply referred to as “diaper”) will be described as an example of the pant-type absorbent wearing article of the present invention.
- X indicates a horizontal direction
- Y indicates a vertical direction orthogonal to the horizontal direction X
- Z indicates a front-rear direction orthogonal to the horizontal direction X and the vertical direction Y, respectively.
- the line PP indicates the vertical virtual center line
- the line QQ is the horizontal virtual center line
- the line L1 indicates the horizontal virtual boundary line.
- the diaper 10 is formed so as to be symmetric with respect to a longitudinal virtual center line PP extending in the longitudinal direction Y by dividing the dimension in the lateral direction X into two equal parts.
- FIG. 1 is a perspective view of an upright body of a diaper 10 having a waist opening 10a and a leg opening 10b as viewed from the front side.
- the diaper 10 is formed by three panels 20, 30, 40 including a front panel 20, a rear panel 30, and a crotch panel 40.
- FIG. 2 shows a state in which each elastic body, which will be described later, of the diaper 10 is expanded against the contraction force and the diaper 10 is kept flat in a state where the front and rear panels 20 and 30 are separated from each other and the diaper 10 is deployed.
- the state seen from the skin facing surface side is shown
- FIG. 3 shows the state seen from the non-skin facing surface side.
- the front and rear panels 20 and 30 extend in the horizontal direction X while being separated from each other in the vertical direction Y.
- These front and rear panels 20 and 30 are joined together with front and rear side edges 21 and 31 to form a seam portion 14 and a waist opening 10a and a pair of leg openings 10b as shown in FIG. .
- the front panel 20 includes a rectangular front inner sheet 24 and front outer sheet 25, a front waistline region elastic body 26, and a front cover sheet 27.
- a front waistline elastic body 26 is interposed between the front outer sheet 25 and the front outer surface sheet 25.
- the front inner sheet 24 and the front outer sheet 25 have substantially the same longitudinal and transverse length dimensions in the longitudinal direction Y and the lateral direction X. Since the front waistline elastic body 26 has the same configuration as the back waistline elastic body 36 described later, it will be described later together with the back waistline elastic body 36.
- This front panel 20 covers a wearer's front waistline region.
- the rear panel 30 includes a rectangular rear inner sheet 34 and a rear outer sheet 35, a rear waistline elastic body 36, a buttocks cover elastic body 51, and a rear cover sheet 37.
- the rear inner sheet 34, A rear waistline elastic body 36 and a buttock cover elastic body 51 are interposed between the outer surface sheet 35 and the outer surface sheet 35.
- the length dimension of the rear panel 30 in the lateral direction X is substantially the same as that of the front panel 20.
- the length dimension of the rear panel 30 in the vertical direction Y is larger than the length dimension of the front panel 20 in the vertical direction Y.
- the rear panel 30 is defined by a horizontal virtual boundary line L ⁇ b> 1 in the vertical direction Y, and the size of the vertical region Y is substantially the same as the size of the front panel 20.
- a buttock cover portion 50 formed below the rear waistline cover portion 12.
- the rear waistline cover portion 12 covers the rear waistline region of the wearer, and the buttock cover portion 50 covers at least a part of the wearer's buttock.
- the sheets 24, 25, 34, and 35 can be made of a moisture permeable and liquid resistant fiber nonwoven fabric, for example, an SMS nonwoven fabric having a mass per unit area of about 10 to 25 g / m 2 , a spabond nonwoven fabric, or a point bond. A nonwoven fabric, an air through nonwoven fabric, etc. can be used.
- the inner sheets 24 and 34 and the outer sheets 25 and 35 may be the same material or different materials.
- the length dimension in the longitudinal direction Y of the front panel 20 and the rear waistline cover portion 12 is preferably about 70 to 150 mm, and more preferably about 105 mm.
- the length dimension in the longitudinal direction Y of the buttock cover portion 50 is preferably about 30 to about 90 mm, and more preferably about 60 mm. Due to the dimensional relationship as described above, when the diaper 10 is worn, the buttock cover portion 50 covers the lowermost portion of the leg opening 10b from the lowermost portion of the rear waistline cover portion 12 so as to cover a part of the leg opening 10b.
- the lower end portion of the flange cover portion 50 is positioned below the longitudinal direction Y with respect to a gasket cuff portion 70 and a barrier cuff portion 80 described later.
- front waistline elastic body 26 and the back waistline elastic body 36 thread-like ones are used, and the front inner and outer surface sheets 24 and 25 are stretched in a stretched state so that contraction force acts in the lateral direction X. It is attached between the outer surface sheets 34 and 35, respectively.
- These front and rear waist region elastic bodies 26 and 36 extend in the lateral direction X, and are arranged between the front inner and outer surface sheets 24 and 25 and between the rear inner and outer surface sheets 34 and 35 at regular intervals in the vertical direction Y, respectively. It is.
- the distance in the longitudinal direction Y between the front and rear waistline elastic bodies 26, 36 is preferably about 4 to about 10 mm.
- the front waistline region elastic body 26 is divided into one that forms a front first elastic region 26a located on the waist opening 10a side and one that forms a front second elastic region 26b located on the leg opening 10b side.
- the waist region elastic body 36 is divided into one that forms a rear first elastic region 36a located on the waist opening 10a side and one that forms a rear second elastic region 36b located on the leg opening 10b side.
- the front first elastic region 26a is positioned in the vicinity of the uppermost portion in the longitudinal direction Y in the wearing state, that is, in the vicinity of the waist opening 10a, and in the expanded state, is positioned in the vicinity of the front outer edge 22 of the front panel 20. .
- a front first elastic region 26 a is formed by four front waistline region elastic bodies 26 facing upward in the longitudinal direction Y from the front outer edge 22 of the front panel 20.
- the front second elastic region 26 b is formed by the remaining front waistline region elastic body 26.
- the rear first elastic region 36a is positioned in the vicinity of the uppermost portion in the longitudinal direction Y in the wearing state, that is, in the vicinity of the waist opening 10a, and in the expanded state, in the vicinity of the rear outer edge 32 of the rear waistline region cover portion 12.
- the rear first elastic region is formed by four rear waist region elastic bodies 36 facing downward in the longitudinal direction Y from the rear outer edge 32 in the rear waist region cover portion 12.
- front and rear first elastic regions 26a and 36a mainly have a function of preventing the diaper 10 from sliding down from the body when the diaper 10 is worn.
- the front and rear second elastic regions 26b and 36b mainly have a function of preventing the diaper 10 from bumping from the body.
- the functions of the front and rear first elastic regions 26a and 36a and the functions of the front and rear second elastic regions 26b and 36b complement each other.
- the front and rear first elastic regions 26a and 36a may have substantially the same contraction force, or one of them may be larger than the other, and the same applies to the front and rear second elastic regions 26b and 36b. .
- the magnitude of the contraction force will be described later in detail. It is preferable to use 7 to 37 yarns of about 310 to about 1240 dtex as the front and rear waist region elastic bodies 26 and 36. In this one embodiment, for example, 20 pieces of about 470 dtex thread-like front and rear waist region elastic bodies 26 and 36 are used. The front and rear waist region elastic bodies 26 and 36 are stretched by about 2.0 to about 3.4 times so that the contraction force acts between the front inner and outer surface sheets 24 and 25 and the rear inner and outer surface sheets 34 and 35. It is attached in between.
- the front and rear waist region elastic bodies 26 and 36 constituting the front and rear first elastic regions 26a and 36a are, for example, 2.3 times extended between the front inner and outer surface sheets 24 and 25, the rear inner
- the front waistline region elastic body 26 which is attached between the outer surface sheets 34 and 35 and constitutes the front second elastic region 26b is extended between 2.8 times and attached between the front inner and outer surface sheets 24 and 25, for example.
- the rear waistline region elastic body 36 constituting the rear second elastic region 36b is, for example, extended by 3.2 times and attached between the rear inner and outer surface sheets 34, 35.
- the magnification regarding the elastic body is, for example, “2.0 times” when the elastic body of 100 mm is stretched to 200 mm and attached to the sheet when not stretched.
- the portions of the front and rear waist region elastic bodies 26 and 36 that overlap with the crotch panel 40 are contractible in the lateral direction X at both side edges 41s of the absorbent core 41 described later.
- the front and rear waistline elastic bodies 26 and 36 overlap the absorbent core 41, and the contraction force of the front and back waistline elastic bodies 26 and 36 is not applied at the center in the lateral direction X.
- the front and rear non-shrink regions 53 and 54 are provided, the front and rear waist region elastic bodies 26 and 36 are disposed so as to substantially overlap a barrier cuff 80 described later on both sides of the front and rear non-shrink regions 53 and 54 in the lateral direction X.
- Front and rear contraction regions 55 and 56 for applying the contraction force are provided.
- the front and rear contraction regions 55 and 56 are indicated by “ ⁇ ”, and the front and rear non-contraction regions 53 and 54 are indicated by “x”.
- the contraction force of the front-rear waist region elastic bodies 26, 36 is not applied, so that the absorbent core 41 is prevented from contracting in the lateral direction X. This is because the area to be absorbed is reduced, the wearer feels uncomfortable, and the excrement is prevented from leaking from the diaper 10.
- the barrier cuff part 80 can be brought into close contact with the wearer's body by applying the contraction force of the front and rear waistline elastic bodies 26 and 36. In this embodiment, in FIG.
- These front and rear waist region elastic bodies 26 and 36 are provided with front and rear non-contracting regions 53 and 54 by processing them at both side edges 41s of the absorbent core 41 so that their contracting force does not act.
- the front and rear waist region elastic bodies 26 and 36 from one front and rear side edges 21 and 31 in the lateral direction X of the front and rear panels 20 and 30 to the other front and rear side edges 21 and 31 in advance.
- the front and rear waistline elastic bodies 26 and 36 of the front and rear non-shrink regions 53 and 54 may be cut and cut back or cut off, or subjected to elastic deterioration treatment, or the front and rear non-shrink regions 53 and 54 may be cut. It is not necessary to arrange the front and rear waist region elastic bodies 26 and 36 in the front.
- the dimension B in the lateral direction X of the front and rear contraction regions 55 and 56 is preferably about 5 to about 20% of the dimension A in the lateral direction X of the absorbent core 41.
- the dimension A in the lateral direction X may be reduced by the contraction force of the front and rear waistline elastic bodies 26 and 36.
- Table 1 shows an example of the relationship between the dimension B in the lateral direction X of the front and rear contraction regions 55 and 56 with respect to the dimension A in the lateral direction X of the absorbent core 41.
- the length dimension on one side in the lateral direction X of the front and rear contraction regions 55, 56 is substantially the same on both sides in the lateral direction X.
- the collar cover elastic body 51 As the collar cover elastic body 51, a thread-like one is used, and is attached in an extended state so that a contracting force acts.
- the buttocks cover elastic body 51 extends in the lateral direction X, and is disposed between the rear inner and outer surface sheets 34 and 35 at regular intervals in the longitudinal direction Y.
- three buttocks cover elastic bodies 51 are provided on the buttocks cover part 50.
- the buttocks cover elastic body 51 has a function of returning the buttocks cover part 50 to the original state by the contraction force when the buttocks cover part 50 is rolled by the movement of the wearer.
- the interval in the longitudinal direction Y of the buttock cover elastic body 51 is preferably about 15 to about 30 mm.
- 1 to 4 thread cover elastic bodies 51 of about 310 to about 1240 dtex In this one embodiment, for example, three buttocks cover elastic bodies 51 of about 470 dtex are used.
- the buttock cover elastic body 51 is attached between the rear inner and outer surface sheets 34 and 35 so that the contraction force acts by extending about 1.5 to about 3.0 times.
- the buttocks cover elastic body 51 closest to the horizontal virtual boundary line L1 is stretched by about 2.1 times, and the remaining two buttocks cover elastic bodies 51 are about 1.9 times. And is attached between the rear inner and outer sheet 34, 35. In the lateral direction X, the contraction force of the buttock cover portion 50 is set smaller than the contraction force of the rear waistline cover portion 12.
- the stretched elastic body is attached to a sheet having a length of 200 mm, and after the sheet including the elastic body is cut out, the contraction force when the length of the contracted sheet is 100 mm is expressed as “2”. .0 ", and the contraction force in the case of 50 mm is” 4.0 ". Therefore, the term “the contraction force is small” means that the length dimension in the contracted state is large when each piece having the same length dimension is taken out from the diaper 10.
- the buttock cover portion 50 including one buttock cover elastic body 51 and the rear waistline region cover portion 12 including one rear waistline region elastic body 36 are small pieces having the same dimensions in the lateral direction X.
- the length dimension in the lateral direction X of the buttock cover part 50 in the contracted state is larger than the length dimension in the lateral direction X of the rear waistline region cover part 12 in the contracted state.
- the contraction force of the buttock cover portion 50 is made smaller than the contraction force of the rear waistline region cover portion 12 because the buttock cover portion 50 is in close contact with the wearer's body by the large contraction force. This is because there is no need, and if a large contraction force is set, the area covering the wearer's buttocks is reduced by curling the buttocks cover portion 50 by the contraction force.
- the interval in the longitudinal direction Y of the buttock cover elastic body 51 is made larger than the interval in the longitudinal direction Y of the rear waistline elastic body 36, the above-described effect can be reliably achieved.
- the buttock cover elastic body 51 is bonded between the rear inner and outer surface sheets 34 and 35 by directly applying an adhesive to the periphery thereof. Further, the rear inner and outer surface sheets 34 and 35 are also joined to each other by an adhesive applied to the buttocks cover elastic body 51.
- the front and rear waist region elastic bodies 26 and 36 are also joined between the front inner and outer surface sheets 24 and 25 and between the rear inner and outer surface sheets 34 and 35, similarly to the buttock cover elastic body 51. In addition, you may make it these elastic bodies 51, 26, and 36 join by the adhesive agent apply
- the crotch panel 40 includes an absorbent core 41 that is an absorbent portion that absorbs body fluid such as a wearer's urine, an inner surface sheet 42 that covers the skin-facing surface of the absorbent core 41, and an absorbent property.
- a leak prevention sheet 43 covering the non-skin facing surface of the core 41 and an outer sheet 44 covering the non-skin facing surface of the leak preventing sheet 43 are provided to cover the wearer's crotch region.
- the absorbent core 41 contains a mixture of cotton-like pulp fibers and superabsorbent polymer particles. As shown in FIGS. 2 and 3, the absorbent core 41 is constricted in the vicinity of the horizontal virtual center line Q.
- a liquid-permeable fiber nonwoven fabric or the like can be used for the inner sheet 42.
- the inner surface sheet 42 for example, an air-through fiber nonwoven fabric, a point bond fiber nonwoven fabric, a spunbond fiber nonwoven fabric or the like having a mass per unit area of about 10 to about 30 g / m 2 can be used.
- a liquid-impervious plastic film can be used for the leakage preventing sheet 43, and the leakage preventing sheet 43 covers at least the entire non-skin facing surface of the absorbent core 41 so that excrement such as urine is contained in the diaper 10. Prevents leakage to the non-skin facing side.
- the length dimension in the longitudinal direction Y of the inner surface sheet 42 and the leakage prevention sheet 43 is larger than the length dimension in the longitudinal direction Y of the absorbent core 41, thereby the longitudinal direction Y of the crotch panel 40.
- the front and rear end edges 47 and 48 do not have the absorbent core 41, and the front and rear end edges 47 and 48 are formed only by the inner surface sheet 42 and the leakage prevention sheet 43.
- the inner surface sheet 42 and the leakage preventing sheet 43 are directly bonded to each other by an adhesive means such as a hot melt adhesive.
- the dimension in the lateral direction X of the inner surface sheet 42 and the leakage prevention sheet 43 is also larger than the length dimension in the lateral direction X of the absorbent core 41.
- 43 extend to both sides of the absorbent core 41 to form both side flaps 49.
- These two side flaps 49 extend in the longitudinal direction Y on both sides of the crotch panel 40.
- the crotch panel 40 is attached with elongate front and rear cover sheets 27 and 37 so as to cover the front and rear end edges 47 and 48 from the skin facing surface side.
- the front and rear cover sheets 27 and 37 extend in the lateral direction X between one side edge 21 and 31 of the front and rear panels 20 and 30 and the other side edge 21 and 31, and front and rear end edges 47 and 48 of the crotch panel 40. Covering the whole area.
- the outer sheet 44 may be a moisture permeable and liquid resistant fiber nonwoven fabric or the like.
- a spunbond / meltblown / spunbond (SMS) fiber nonwoven fabric, a point bond fiber nonwoven fabric, a spunbond fiber nonwoven fabric or the like having a mass per unit area of about 10 to about 25 g / m 2 is used. it can.
- the length dimension in the vertical direction Y of the outer sheet 44 is substantially the same as the length dimension in the vertical direction Y of the inner sheet 42 and the leakage prevention sheet 43 as shown in FIG.
- the length dimension of the outer surface sheet 44 in the lateral direction X is larger than the length dimension of the absorbent core 41 in the lateral direction X, as shown in FIGS.
- the gasket cuff part 70 and the barrier cuff part 80 are formed by the part which is larger than the length dimension of the horizontal direction X of 43, and was extended in the horizontal direction X of the inner surface sheet
- the gasket cuff part 70 is provided along both sides of the transverse direction X of the absorbent core 41, respectively. More specifically, the gasket cuff part 70 is configured such that the side part of the outer surface sheet 44 extending in the lateral direction X from the absorbent core 41 and the leakage prevention sheet 43 is vertically disposed on the outer side of the absorbent core 41 in the lateral direction X. It is formed in a form that does not overlap the absorbent core 41 by folding back toward the skin facing surface so as to be close to each other toward the direction virtual center line P.
- the barrier cuff part 80 is formed by folding the side part of the folded outer sheet 44 excluding the gasket cuff part 70 into a substantially Z-shaped cross section on the skin facing surface side of the absorbent core 41. As described above, the outer sheet 44 is folded back to form the barrier cuff part 80, whereby the skin facing surface intermediate region of the inner sheet 42 is positioned between the barrier cuff parts 80.
- a gasket elastic body 71 is provided between portions where the outer sheet 44 is folded.
- the gasket elastic body 71 is a thread-like member extending in the longitudinal direction Y.
- the gasket elastic body 71 is attached to the outer sheet 44 in an expanded state so that a contraction force acts in the longitudinal direction Y.
- one to four gasket elastic bodies 71 having a diameter of about 310 to about 1240 dtex are used, and the outer surface sheet 44 is made to exert a contraction force by being stretched about 2.3 to about 2.9 times. It is attached to.
- three gasket elastic bodies 71 are used for each of the gasket cuff portions 70 on both sides in the lateral direction X of the absorbent core 41.
- a thread-like elastic body 71 having a thread shape of about 470 dtex is used.
- the gasket elastic body 71 is attached to the outer sheet 44 so that the contraction force acts by extending the gasket elastic body 71 by about 2.7 times.
- the gasket elastic body 71 of this one embodiment extends to the vicinity thereof without reaching the front and rear end edges 47 and 48 of the crotch panel 40. More specifically, as shown in FIGS. 2 and 3, one end 71a of the gasket elastic body 71 extends to the group of front waistline elastic bodies 26 forming the front second elastic area 26b, and the gasket elastic body 71 The other end 71b of the rear waist region defines a rear second elastic region 36b adjacent to the buttocks cover portion 50 beyond the lateral virtual boundary L1 that defines the back waist region cover portion 12 and the buttocks cover portion 50.
- the elastic body 36 extends into the group.
- the side edge of the leakage preventing sheet 43 is located between the portions where the outer sheet 44 is folded. Between the portions where the outer sheet 44 is folded, the outer sheet 44 and the leakage preventing sheet 43 are bonded to each other via a bonding means 49a such as a hot melt adhesive.
- a barrier elastic body 81 is provided between portions where the outer sheet 44 is folded.
- the barrier elastic body 81 is a thread-like member extending in the longitudinal direction Y.
- the barrier elastic body 81 is attached to the outer sheet 44 in an extended state so that a contracting force acts in the longitudinal direction Y. Due to the contraction force of the barrier elastic body 81, in the state shown in FIG. 8, the barrier cuff portion 80 stands up so as to be separated from the inner surface sheet 42 and closely contacts the base of the wearer's leg.
- the gasket cuff part 70 stands up by the gasket elastic body 71, and closely_contact
- a double barrier is formed by the barrier cuff part 80 and the gasket cuff part 70, thereby preventing excrement such as urine from around the wearer's leg from leaking. .
- the buttock cover portion 50 and the crotch panel 40 are joined to each other in the rear joining region 62 provided between the gasket cuff portions 70 on both sides of the absorbent core 41 in the lateral direction X, and overlap the gasket cuff portion 70. After being provided in such a manner, they are not joined to each other in the non-joining region 64.
- the rear bonding region 62 is indicated by “•”, while the rear non-bonding region 64 is indicated by “x”.
- the rear non-joining region 64 is set between the gasket elastic body 71 intersecting the buttock cover elastic body 51 and the vertical virtual center line P below the horizontal virtual boundary line L1.
- the virtual line L2 extends from the gasket elastic body 71s closest to the vertical virtual center line P among the plurality of gasket elastic bodies 71 in the gasket cuff portions 70 on both side edges 41s of the absorbent core 41 to the vertical virtual center. It is preferably set at about 5 to about 10 mm toward the direction close to the line P.
- the location where the elastic force of the gasket elastic body 71 acts extends not only to the location where the gasket elastic body 71 exists but also to the surrounding area where the gasket elastic body 71 exists.
- the region where the contraction force acts changes depending on the relative relationship between the contraction force of the gasket elastic body 71 and the rigidity of the outer surface sheet 44 constituting the gasket cuff part 70. The same applies to the region where the contraction force of the buttocks cover elastic body 51 acts.
- the inventor's diligent research and considerations show that the contraction force of the gasket elastic body 71 and the contraction force of the buttocks cover elastic body 51, the rigidity of the outer sheet 44 constituting the gasket cuff part 70, and the buttocks cover
- the rear non-joining region 64 is provided in consideration of the rigidity of the rear inner and outer surface sheets 34 and 35 constituting the portion 50. Further, it is preferable that the rear bonding region 62 is provided in the entire region between the rear non-bonding regions 64.
- the crotch panel 40 and the rear waistline cover portion 12 include a crotch panel 40 and a rear waistline in a rear joint region 65 provided at a position where the crotch panel 40 and the rear waistline cover portion 12 overlap each other.
- the area cover part 12 is joined to each other.
- the rear joint region 65 is based on the horizontal virtual boundary line L1 and above the horizontal virtual boundary line L1 in the vertical direction Y, and the crotch panel 40, It is preferable to provide the entire region where the rear waistline cover portion 12 overlaps each other.
- the crotch panel 40 and the front panel 20 are joined to each other in a front joining region 61 provided at a position where the panels 20 and 40 overlap each other.
- the front joining region 61 is preferably provided in the entire area where the crotch panel 40 and the front panel 20 overlap each other.
- These front and rear joining regions 61, 62 and 65 and the rear non-joining region 64 are provided between the outer sheet 44 of the crotch panel 40 and the front and rear inner sheets 24 and 34 of the front and rear panels 20 and 30.
- the coating machine and the sheet are non-contact, and the hot melt adhesive is ⁇ -shaped, wavy
- the hot melt adhesive may be applied in a ⁇ shape, a wave shape, or a stripe shape in a state where the coating machine and the sheet are in contact with each other. For example, as shown in FIG.
- the outer sheet 44 of the crotch panel 40 and the rear inner sheet 34 of the buttock cover portion 50 are bonded to each other by a bonding means 69 such as a hot melt adhesive.
- a bonding means 69 such as a hot melt adhesive.
- the hot-melt adhesive constituting the joining means 69 does not need to be applied in a ⁇ -shape or stripe shape, and may be applied over the entire joining regions 61, 62, 65.
- the contraction force of the gasket elastic body 71 acts on the flange cover portion 50.
- the collar part cover part 50 shrink
- the contractive force of the buttock cover elastic body 51 acts on the absorptive core 41, it can also suppress that the area which absorbs the excretion by the absorptive core 41 reduces.
- the absorbent core 41 can be prevented from moving loosely with respect to the buttock cover portion 50. Further, since the rear waistline elastic body 36 is in a state in which it can be contracted at both side edges 41s of the absorbent core 41 in the lateral direction X, the absorbent core 41 is prevented from contracting in the lateral direction X. It can suppress that the area which absorbs excrement, such as urine, can reduce, and can prevent excretion leaking from the diaper 10.
- the front panel 20 is provided at a location where the gasket elastic body 71 and the front waistline elastic body 26 intersect, where the front panel 20 and the crotch panel 40 overlap. Since the front joining area 61 for joining the crotch panel 40 and the crotch panel 40 is provided, when the diaper 10 is worn, the front panel 20 and the rear waistline cover portion 12 spread in the lateral direction X. Can be spread. Thereby, the area which absorbs the excretion of the absorptive core 41 can be expanded.
- FIGS. 1 to 8 are examples of the embodiments, and the present invention is not limited to such forms.
- the example using the thread-like thing was shown as the front and rear waist area elastic bodies 26 and 36, it is not restricted to this, It can comprise by a sheet form or a strip
- the absorbent core 41 has a length dimension in the horizontal direction X that is smaller than that of the front end edge or the rear end edge at the center in the vertical direction Y. It is also possible to use.
- the shape of the absorptive core 41 is not restricted to these.
- the collar cover portion 50 is formed in a rectangular shape, it is not necessary to form the corner portion 39 constituted by the rear side edges 31 and the rear inner edge 33.
- the rear joint region 62 is provided in the entire region between the rear non-joint regions 64 provided on both sides of the crotch panel 40 and formed in a rectangular shape, but is not limited thereto, and may be formed in a trapezoidal shape.
- the non-joining region where the crotch panel 40 and the rear waistline cover portion 12 are not joined to both side edges 40s of the crotch panel 40 in the lateral direction X is about 5 mm. It is preferable to provide a non-joining region where the crotch panel 40 and the front panel 20 are not joined. For the same reason, the front inner end edge 23 of the front panel 20 in FIG. 3 is provided with a non-joining area that does not join the crotch panel 40 and the front panel 20 to the rear inner edge 23 of the rear waistline cover portion 12.
- the edge 33 is preferably provided with a non-joining area that does not join the crotch panel 40 and the buttock cover part 50 to about 5 mm.
- the number of the front waistline area elastic body 26 and the number of the back waistline area elastic body 36 was demonstrated as the same thing, it is not restricted to this, You may change the number of both.
- the lower end portion of the flange cover portion 50 may be positioned above the gasket cuff portion 70 and the barrier cuff portion 80 in the vertical direction Y.
- the front and rear contraction regions 55 and 56 may be provided symmetrically with respect to the vertical virtual center line P or may be provided asymmetrically.
- the contraction force of the buttock cover portion 50 and the contraction force of the rear waistline region cover portion 12 may be made substantially the same. Specifically, a small piece of the same size is taken out in the lateral direction X from the buttock cover portion 50 including one buttock cover elastic body 51 and the rear waistline region cover portion 12 including one rear waistline region elastic body 36.
- the length dimension in the lateral direction X of the buttock cover portion 50 in the contracted state may be substantially the same as the length dimension in the lateral direction X of the rear waistline region cover portion 12 in the contracted state.
- the interval in the longitudinal direction Y of the buttock cover elastic body 51 needs to be larger than the interval in the longitudinal direction Y of the rear waistline region elastic body 36.
- the elastic body 51 is attached to the rear panel 30 in a non-extended state so that the contraction force of the hip cover elastic body 51 does not act on the portion where the hip cover portion 50 and the absorbent core 41 overlap, and the hip cover portion 50
- the elastic body 51 may be attached to the rear panel 30 in an extended state so that the contraction force of the buttocks cover elastic body 51 acts in a portion where the absorbent core 41 does not overlap. For example, as shown in FIG.
- a portion where the buttock cover portion 50 and the absorbent core 41 overlap is provided with a contraction force non-operation region 90 where the contraction force of the buttock cover elastic body 51 does not act
- a contraction force action region 91 where the contraction force of the buttocks cover elastic body 51 acts is provided in a portion where the absorbent core 41 does not overlap.
- the buttocks cover portion 50 can be placed along the wearer's buttocks by the contraction force of the buttocks cover elastic body 51 in the region 91, 50 can effectively cover the buttocks of the wearer. Further, it is necessary to provide the contraction force non-operation region 90 in a portion where the buttock cover portion 50 and the absorbent core 41 overlap and provide the contraction force operation region 91 in a portion where the buttock cover portion 50 and the absorbent core 41 do not overlap. There is no.
- the contraction force non-operation region 90 may be provided larger or smaller than the length of the absorbent core 41 in the lateral direction X.
- the length dimension of the contraction force action region 91 in the lateral direction X is appropriately changed so as to correspond to them.
- the contraction force non-operation region 90 is provided so as to overlap the rear joint region 62 (see FIG. 3), and the contraction force operation region 91 includes the rear non-join region 64 (see FIG. 3). You may provide in the part except the contraction force non-action area
- the contraction force is not applied.
- the elastic body 51 in the region 90 may be cut and cut back or cut off, or subjected to an elastic deterioration process, or the elastic body 51 may not be disposed in the region 90.
- the non-stretched elastic body 51 may be attached to the rear panel 30.
- the buttocks cover elastic body 51 may be attached to the rear panel 30 in a non-contracted state in the entire region in the lateral direction X.
- Disposable diapers (pants-type absorbent wearing articles) 12 Rear waistline cover 20 Front panel 26 Front waistline elastic body 30 Rear panel 36 Rear waistline elastic body 40 Crotch panel 41 Absorbent core (absorbing part) 50 Cover part 51 Cover part elastic body 70 Gasket cuff part 71 Gasket elastic body X Horizontal direction Y Vertical direction Z Front-back direction
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- Absorbent Articles And Supports Therefor (AREA)
Abstract
Description
例えば、特許文献1には、以下のようなパンツ型のおむつに係る技術が開示されている。
(1)腹側外層部材は、着用者の前胴回り域を被覆する前パネルである。背側外層部材は、着用者の後胴回り域を被覆する後パネルである。吸収性部材は、前パネルと後パネルとにつながって着用者のクロッチ域を被覆するクロッチパネルである。
(2)後パネルには、縦方向の寸法が前パネルの寸法と実質的に同じである後胴回り域カバー部と、後胴回り域カバー部の下方に連なって着用者の臀部の少なくとも一部を覆う臀部カバー部とが形成してある。
(3)クロッチパネルは、前後方向に延び、尿等の体液を吸収する吸収部と、吸収部の両側に沿って前後方向へ延び、前後方向へ弾性的に収縮可能なガスケット弾性体を有するガスケットカフス部とを備えている。
(4)臀部カバー部は、臀部カバー部の縁に沿って延びる臀部カバー弾性体を備えている。
(5)臀部カバー弾性体と、ガスケット弾性体とが交差する個所で、臀部カバー部とクロッチパネルとを接合してある。
しかも、吸収部の両側のガスケットカフス部の間では接合状態にあるため、臀部カバー部に対して吸収部が妄りに移動することを抑えることができる。
前後パネル20,30は、縦方向Yに互いに離間した状態で、横方向Xにそれぞれ延びている。これら前後パネル20,30は、前後両側縁21,31を互いに接合することによって、図1に示すように、シーム部14を形成するとともに、ウエスト開口10a及び一対のレッグ開口10bを形成している。
前胴回り域弾性体26は、後述する後胴回り域弾性体36と構成が同一のため、後胴回り域弾性体36と共に後述する。
この前パネル20は、着用者の前胴回り域を被覆するものである。
後パネル30の横方向Xの長さ寸法は、前パネル20と実質的に同じである。一方、後パネル30の縦方向Yの長さ寸法は、前パネル20の縦方向Yの長さ寸法よりも大きい。具体的には、後パネル30には、縦方向Yにおいて横方向仮想境界線L1で画成され、縦方向Yの寸法が前パネル20の寸法と実質的に同じである後胴回り域カバー部12と、後胴回り域カバー部12の下方に連なる臀部カバー部50とが形成してある。
後胴回り域カバー部12は、着用者の後胴回り域を被覆するものであり、臀部カバー部50は、着用者の臀部の少なくとも一部分を覆うものである。
シート24,25,34,35は、透湿性かつ液抵抗性の繊維不織布等を用いることができ、例えば、単位面積あたりの質量が約10~25g/m2のSMS不織布、スパボンド不織布、ポイントボンド不織布、エアースルー不織布等を用いることができる。内面シート24,34と、外面シート25,35とは、同一の素材でもよく、異なる素材であってもよい。
上記のような寸法関係によって、おむつ10の着用状態においては、臀部カバー部50は、後胴回り域カバー部12の最下部から、レッグ開口10bの一部を覆うようにそのレッグ開口10bの最下部まで延出し、かつ臀部カバー部50の下端部は、後述するガスケットカフス部70及びバリヤーカフス部80よりも縦方向Yの下方に位置する。
前胴回り域弾性体26は、ウエスト開口10a側に位置する前第1弾性領域26aを形成するものと、レッグ開口10b側に位置する前第2弾性領域26bを形成するものとに区画され、後胴回り域弾性体36は、ウエスト開口10a側に位置する後第1弾性領域36aを形成するものと、レッグ開口10b側に位置する後第2弾性領域36bを形成するものとに区画されている。
前第1弾性領域26aは、着用状態では、縦方向Yにおける最上部の近傍、すなわち、ウエスト開口10aの近傍に位置し、展開状態では、前パネル20の前外端縁22の近傍に位置する。この実施形態では、図2,図3において、例えば、前パネル20の前外端縁22から縦方向Yの上方に向かった4本の前胴回り域弾性体26によって前第1弾性領域26aが形成され、残りの前胴回り域弾性体26によって前第2弾性領域26bが形成されている。
後第1弾性領域36aは、着用状態では、縦方向Yにおける最上部の近傍、すなわち、ウエスト開口10aの近傍に位置し、展開状態では、後胴回り域カバー部12の後外端縁32の近傍に位置する。この実施形態では、図2,図3において、例えば、後胴回り域カバー部12における後外端縁32から縦方向Yの下方に向かった4本の後胴回り域弾性体36によって後第1弾性領域36aが形成され、残りの後胴回り域弾性体36によって後第2弾性領域36bが形成されている。
これら前後第1弾性領域26a,36aは、おむつ10の着用状態において、主としておむつ10が身体からずり下がることを防止する機能を有している。前後第2弾性領域26b,36bは、主としておむつ10が身体からだぶつくことを防止する機能を有している。前後第1弾性領域26a,36aの機能と、前後第2弾性領域26b,36bの機能とは、相互に補完している。
前後第1弾性領域26a,36aは、収縮力を実質的に同等にしてもよいし、その一方がその他方よりも大きくしてあっても良く、前後第2弾性領域26b,36bも同様である。収縮力の大きさについては、後で詳細に説明する。
前後胴回り域弾性体26,36は、約310~約1240dtexの糸状のものを7~37本用いることが好ましい。この一つの実施形態では、例えば、約470dtexの糸状の前後胴回り域弾性体26,36を20本ずつ用いてある。前後胴回り域弾性体26,36は、約2.0~約3.4倍に伸長させることによって、収縮力が作用するよう前内外面シート24,25の間、後内外面シート34,35の間に取り付けてある。この一つの実施形態において、前後第1弾性領域26a,36aを構成する前後胴回り域弾性体26,36は、例えば、2.3倍に伸長させて前内外面シート24,25の間、後内外面シート34,35の間に取り付けてあり、前第2弾性領域26bを構成する前胴回り域弾性体26は、例えば、2.8倍に伸長させて前内外面シート24,25の間に取り付けてあり、後第2弾性領域36bを構成する後胴回り域弾性体36は、例えば、3.2倍に伸長させて後内外面シート34,35の間に取り付けてある。
ここで、弾性体に関する倍率は、例えば、非伸張時に100mmの弾性体を200mmに伸張させてシートに取り付けた場合を「2.0倍」とする。
前後非収縮領域53,54では、前後胴回り域弾性体26,36の収縮力を作用させないことによって、吸収性コア41が横方向Xに収縮されることを抑え、これによって尿等の排泄物を吸収する面積が減少したり、着用者に違和感を与えたり、さらには、排泄物がおむつ10から漏れたりすることを防止するためである。
一方、前後収縮領域55,56では、前後胴回り域弾性体26,36の収縮力を作用させることによって、バリヤーカフス部80を着用者の身体に密着させることができるためである。
この一つの実施形態では、図2中、横方向仮想境界線L1の縦方向Yにおける上方の2本の後胴回り域弾性体36が吸収性コア41に重なり、且つ、図2中、横方向仮想中心線Qから、縦方向Yにおける下方の6本の前胴回り域弾性体26が吸収性コア41に重なっている。これら前後胴回り域弾性体26,36は、吸収性コア41の両側縁41sで、それらの収縮力が作用しないように処理することにより前後非収縮領域53,54を設けてある。
収縮力を作用させないようにするには、例えば、予め前後パネル20,30の横方向Xの一方の前後両側縁21,31から他方の前後両側縁21,31まで前後胴回り域弾性体26,36を配置した後、前後非収縮領域53,54の前後胴回り域弾性体26,36を切断してカットバックし、若しくは切除し、又は弾性劣化処理してもよいし、前後非収縮領域53,54に前後胴回り域弾性体26,36を配置しなくてもよい。
前後収縮領域55,56の横方向Xにおける寸法Bは、吸収性コア41の横方向Xの寸法Aの約5~約20%であることが好ましい。
前後収縮領域55,56が、上記範囲より小さい場合には、バリヤーカフス部80を着用者の身体に十分に密着させることが困難である一方、上記範囲より大きい場合には、吸収性コア41の横方向Xの寸法Aが、前後胴回り域弾性体26,36の収縮力によって縮小されてしまうおそれがある。
吸収性コア41の横方向Xの寸法Aに対する、前後収縮領域55,56の横方向Xの寸法Bの関係の一例を表1に示す。
臀部カバー弾性体51は、約310~約1240dtexの糸状のものを1~4本用いることが好ましい。この一つの実施形態では、例えば、約470dtexの臀部カバー弾性体51を3本用いてある。臀部カバー弾性体51は、約1.5~約3.0倍に伸長させることによって、収縮力が作用するよう後内外面シート34,35の間に取り付けてある。この一つの実施形態において、横方向仮想境界線L1に最も近接する臀部カバー弾性体51は、約2.1倍に伸長させ、残りの2本の臀部カバー弾性体51は、約1.9倍に伸長させて後内外面シート34,35の間に取り付けてある。
横方向Xにおいて、臀部カバー部50の収縮力を後胴回り域カバー部12の収縮力よりも小さく設定してある。
ここで、伸長状態の弾性体を長さ寸法が200mmのシートに取り付け、その弾性体を含むシートを切り取った後、縮んだ状態のシートの長さ寸法が100mmである場合の収縮力を「2.0」とし、50mmである場合の収縮力を「4.0」とする。よって、収縮力が小さいとは、長さ寸法が同一の小片をおむつ10からそれぞれ取り出した場合において、縮んだ状態における長さ寸法が大きいことを言う。
この一つの実施形態では、1本の臀部カバー弾性体51を含む臀部カバー部50と、1本の後胴回り域弾性体36を含む後胴回り域カバー部12とを横方向Xにおいて同一寸法の小片を取り出した場合、縮んだ状態での臀部カバー部50の横方向Xの長さ寸法が、縮んだ状態での後胴回り域カバー部12の横方向Xの長さ寸法よりも大きい。
このように、横方向Xにおいて、臀部カバー部50の収縮力を後胴回り域カバー部12の収縮力よりも小さくするのは、臀部カバー部50は、大きな収縮力によって着用者の身体に密着する必要がないからであり、仮に、大きな収縮力を設定した場合、その収縮力によって臀部カバー部50が丸まることによって、着用者の臀部を覆う面積が減少するためである。
しかも、この例では、臀部カバー弾性体51の縦方向Yの間隔を、後胴回り域弾性体36の縦方向Yの間隔よりも大きくしてあるため、上記効果を確実に達成することができる。
これらの図に示すように、クロッチパネル40は、着用者の尿等の体液を吸収する吸収部である吸収性コア41と、吸収性コア41の肌対向面を覆う内面シート42と、吸収性コア41の非肌対向面を覆う漏れ防止シート43と、漏れ防止シート43の非肌対向面を覆う外面シート44とを含み、着用者のクロッチ域を被覆するものである。
漏れ防止シート43には、不透液性のプラスチックフィルムを用いることができ、漏れ防止シート43で少なくとも吸収性コア41の非肌対向面の全体を覆って、尿等の排泄物がおむつ10の非肌対向面の側に漏れるのを防止している。
外面シート44の横方向Xの長さ寸法は、図4,6,7,8に示すように、吸収性コア41の横方向Xの長さ寸法よりも大きく、且つ内面シート42及び漏れ防止シート43の横方向Xの長さ寸法よりも大きく、内面シート42及び漏れ防止シート43の横方向Xに延出した部分によってガスケットカフス部70及びバリヤーカフス部80を形成している。
上述したように外面シート44を折返してバリヤーカフス部80を形成することによって、バリヤーカフス部80の間には、内面シート42の肌対向面中間域が位置することとなる。
この一つの実施形態において、後非接合領域64は、横方向仮想境界線L1の下方において、臀部カバー弾性体51に交差するガスケット弾性体71と、縦方向仮想中心線Pとの間に設定した縦方向Yに延びる仮想線L2から、クロッチパネル40の各側縁40sまでにそれぞれ設けてある。
仮想線L2は、吸収性コア41の両側縁41sの各ガスケットカフス部70において、複数のガスケット弾性体71のうち、縦方向仮想中心線Pに最も近接するガスケット弾性体71sから、縦方向仮想中心線Pに近接する方向に向けて約5~約10mmで設定することが好ましい。
後接合領域65は、図3において、「・」で示すように、横方向仮想境界線L1を基準とし、この横方向仮想境界線L1の縦方向Yの上方であって、クロッチパネル40と、後胴回り域カバー部12とが互いに重なる個所の全域に設けることが好ましい。
前接合領域61は、図3において、「・」で示すように、クロッチパネル40と、前パネル20とが互いに重なる個所の全域に設けることが好ましい。
クロッチパネル40の外面シート44と、前後パネル20,30の前後内面シート24,34とを接合する場合、例えば、塗工機とシートとが非接触でホットメルト接着剤をΩ字状、波状、縞状に塗工してもよいし、又は塗工機とシートとが接触した状態でホットメルト接着剤をΩ字状、波状、縞状に塗工してもよい。例えば、図6に示すように、ホットメルト接着剤等の接合手段69により、クロッチパネル40の外面シート44と、臀部カバー部50の後内面シート34とが互いに接合してある。もちろん、接合手段69を構成するホットメルト接着剤は、Ω字状や縞状に塗工する必要はなく、接合領域61,62,65の全域に塗工してもよい。
しかも、横方向Xにおいて、吸収性コア41の両側のガスケットカフス部70の間では接合状態にあるため、臀部カバー部50に対して吸収性コア41が妄りに移動することを抑えることができる。
また、後胴回り域弾性体36は、横方向Xにおいて、吸収性コア41の両側縁41sで収縮可能な状態にあるため、吸収性コア41が横方向Xに収縮されることを抑え、これによって尿等の排泄物を吸収する面積が減少することを抑えることができ、排泄物がおむつ10から漏れることを防止することができる。
さらに、ガスケット弾性体71と、後胴回り域弾性体36とが交差する個所であって、後胴回り域カバー部12とクロッチパネル40とが重なる個所に、後胴回り域カバー部12とクロッチパネル40とを接合する後接合領域65を設けてあり、且つガスケット弾性体71と、前胴回り域弾性体26とが交差する個所であって、前パネル20とクロッチパネル40とが重なる個所に、前パネル20とクロッチパネル40とを接合する前接合領域61を設けてあるため、おむつ10を着用するとき、前パネル20及び後胴回り域カバー部12が横方向Xに広がれば、クロッチパネル40を横方向Xに広げることができる。これにより、吸収性コア41の排泄物を吸収する面積を広げることができる。
吸収性コア41として、図3に示すように、縦方向Yの中央において横方向Xの長さ寸法が、前端縁、若しくは後端縁のそれよりも小さいものを用いているが、すべて同寸法のものを用いることも可能である。もちろん、吸収性コア41の形状は、これらに限られない。
臀部カバー部50は、矩形状に形成してあるが、後両側縁31と後内端縁33とによって構成される角部39を形成する必要はない。例えば、臀部カバー部50が着用者に密着し易くするように、臀部のほほの形状に合わせて、後両側縁31に接し、かつ後内端縁33に接する一つの曲線で形成することもできる。
後接合領域62は、クロッチパネル40の両側にそれぞれ設けた後非接合領域64の間の全域に設け、矩形状に形成したが、これに限られず、台形状に形成してもよい。
さらに、接合のとき、接着剤がはみ出ることを考慮すれば、横方向Xにおけるクロッチパネル40の両側縁40sには約5mm程度、クロッチパネル40と後胴回り域カバー部12とを接合しない非接合領域を設け、かつクロッチパネル40と前パネル20とを接合しない非接合領域を設けることが好ましい。同様の理由で、図3における前パネル20の前内端縁23には約5mm程度、クロッチパネル40と前パネル20とを接合しない非接合領域を設け、後胴回り域カバー部12の後内端縁33には、約5mm程度、クロッチパネル40と臀部カバー部50とを接合しない非接合領域を設けることが好ましい。
また、前胴回り域弾性体26と、後胴回り域弾性体36との数が同じもので説明したがこれに限られず、両者の数を変えてもよい。
さらに、臀部カバー部50の下端部は、ガスケットカフス部70及びバリヤーカフス部80よりも縦方向Yの上方に位置してもよい。
また、前後収縮領域55,56は、縦方向仮想中心線Pに対して対称に設けてもよいし、非対称に設けてもよい。
このように領域90を設ければ、領域90において臀部カバー部50が横方向に縮むことを抑えることができるため、尿等の排泄物を吸収する面積が減少することを抑えることができる。しかも、領域90の横方向Xの両側に領域91を設ければ、領域91において臀部カバー弾性体51の収縮力によって、着用者の臀部に臀部カバー部50を沿わせることができ、臀部カバー部50によって効果的に着用者の臀部をカバーすることができる。
また、収縮力非作用領域90を、臀部カバー部50と吸収性コア41とが重なる部分に設け、収縮力作用領域91を、臀部カバー部50と吸収性コア41とが重ならない部分に設ける必要はない。例えば、収縮力非作用領域90を、横方向Xにおいて吸収性コア41の長さ寸法よりも大きく設けてもよいし、小さく設けてもよい。もちろん、それらに対応するように、横方向Xにおける収縮力作用領域91の長さ寸法を適宜、変更する。
さらに、収縮力非作用領域90を後接合領域62(図3参照)に重なるように設け、かつ収縮力作用領域91を、後非接合領域64(図3参照)を含み、臀部カバー部50から収縮力非作用領域90を除いた部分に設けてもよい。
収縮力を作用させないようにするには、例えば、予め後パネル30の横方向Xの一方の後両側縁31から他方の後両側縁31まで臀部カバー弾性体51を配置した後、収縮力非作用領域90の弾性体51を切断してカットバックし、若しくは切除し、又は弾性劣化処理してもよいし、領域90に弾性体51を配置しなくてもよい。もちろん、非伸張状態の弾性体51を後パネル30に取り付けてもよい。
なお、臀部カバー弾性体51は、横方向Xの全域において非収縮状態で後パネル30に取り付けてもよい。
12 後胴回り域カバー部
20 前パネル
26 前胴回り域弾性体
30 後パネル
36 後胴回り域弾性体
40 クロッチパネル
41 吸収性コア(吸収部)
50 臀部カバー部
51 臀部カバー弾性体
70 ガスケットカフス部
71 ガスケット弾性体
X 横方向
Y 縦方向
Z 前後方向
Claims (8)
- 縦方向と横方向と前後方向とを有する着用物品が、着用者の前胴回り域を被覆する前パネルと、前記着用者の後胴回り域を被覆する後パネルと、前記前パネルと前記後パネルとに連結され前記着用者のクロッチ域を被覆するクロッチパネルとを含み、前記後パネルには、前記縦方向の寸法が前記前パネルの寸法と実質的に同じである後胴回り域カバー部と、前記後胴回り域カバー部の下方に連なって前記着用者の臀部の少なくとも一部分を覆う臀部カバー部とが形成され、
前記クロッチパネルが、前記前後方向に延びる吸収部と、前記吸収部の両側に沿って前記前後方向へ延び、前記前後方向に弾性的に収縮可能なガスケット弾性体を有するガスケットカフス部とを含み、
前記臀部カバー部が、前記横方向へ延びる臀部カバー弾性体を有するパンツ型の吸収性着用物品において、
前記臀部カバー部と、前記クロッチパネルとは、前記横方向において、前記吸収部の両側の前記ガスケットカフス部の間では接合状態にあり、前記ガスケットカフス部では非接合状態にあることを特徴とする前記着用物品。 - 前記後胴回り域カバー部は、前記横方向に弾性的に収縮可能な後胴回り域弾性体を有し、
前記ガスケット弾性体と前記後胴回り域弾性体とが交差する部位において、前記クロッチパネルと前記後パネルとが接合し、
前記前パネルは、前記横方向に弾性的に収縮可能な前胴回り域弾性体を有し、
前記ガスケット弾性体と前記前胴回り域弾性体とが交差する部位において、前記クロッチパネルと前記前パネルとが接合している請求項1に記載のパンツ型の吸収性着用物品。 - 前記臀部カバー弾性体が、非伸張状態で前記後パネルに取り付けてある請求項1に記載のパンツ型の吸収性着用物品。
- 少なくとも前記臀部カバー部と前記吸収部とが重なる部分において、前記臀部カバー弾性体を非伸張状態で前記後パネルに取り付けてある請求項1に記載のパンツ型の吸収性着用物品。
- 前記臀部カバー弾性体を含む前記臀部カバー部と、前記後胴回り域弾性体を含む前記後胴回り域カバー部とを前記横方向において同一寸法の小片を取り出した場合、縮んだ状態での前記臀部カバー部の前記横方向の長さ寸法が、縮んだ状態での前記後胴回り域カバー部の前記横方向の長さ寸法よりも大きい請求項2に記載のパンツ型の吸収性着用物品。
- 前記臀部カバー弾性体を含む前記臀部カバー部と、前記後胴回り域弾性体を含む前記後胴回り域カバー部とを前記横方向において同一寸法の小片を取り出した場合、縮んだ状態での前記臀部カバー部の前記横方向の長さ寸法と、縮んだ状態での前記後胴回り域カバー部の前記横方向の長さ寸法がとが実質的に同一であり、
前記臀部カバー弾性体の前記縦方向の間隔を、前記後胴回り域弾性体の前記縦方向の間隔よりも大きくしてある請求項2に記載のパンツ型の吸収性着用物品。 - 前記後胴回り域弾性体は、前記横方向において、前記吸収部の両側縁で収縮可能な状態にある請求項2に記載のパンツ型の吸収性着用物品。
- 前記後胴回り域弾性体が、前記吸収部の両側縁それぞれにおいて収縮可能な範囲は、前記吸収部の前記横方向の寸法の5~20%である請求項7に記載のパンツ型の吸収性着用物品。
Priority Applications (4)
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EP11800772.3A EP2589359B1 (en) | 2010-07-01 | 2011-06-27 | Pants-type absorbent item of clothing |
CN201180032461.1A CN102970956B (zh) | 2010-07-01 | 2011-06-27 | 裤型吸收性穿着物品 |
US13/704,907 US9375359B2 (en) | 2010-07-01 | 2011-06-27 | Pants-type absorbent wearing article with buttocks covering portion |
ZA2012/09303A ZA201209303B (en) | 2010-07-01 | 2012-12-07 | Pants-type absorbent item of clothing |
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JP2010151493A JP5539798B2 (ja) | 2010-07-01 | 2010-07-01 | パンツ型の吸収性着用物品 |
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US (1) | US9375359B2 (ja) |
EP (1) | EP2589359B1 (ja) |
JP (1) | JP5539798B2 (ja) |
CN (1) | CN102970956B (ja) |
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WO2016029374A1 (en) * | 2014-08-27 | 2016-03-03 | The Procter & Gamble Company | Wearable article having elastic belt |
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JP2016182168A (ja) * | 2015-03-25 | 2016-10-20 | 日本製紙クレシア株式会社 | パンツ型吸収性物品 |
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WO2017065320A1 (ja) * | 2016-12-22 | 2017-04-20 | ユニ・チャーム株式会社 | 吸収性物品の製造方法 |
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US9375359B2 (en) | 2016-06-28 |
CN102970956A (zh) | 2013-03-13 |
MY163617A (en) | 2017-10-13 |
JP2012011056A (ja) | 2012-01-19 |
ZA201209303B (en) | 2013-08-28 |
CN102970956B (zh) | 2014-12-31 |
JP5539798B2 (ja) | 2014-07-02 |
US20130096528A1 (en) | 2013-04-18 |
EP2589359A4 (en) | 2014-02-12 |
EP2589359B1 (en) | 2016-07-20 |
EP2589359A1 (en) | 2013-05-08 |
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