WO2017149830A1 - Tampon absorbant - Google Patents

Tampon absorbant Download PDF

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Publication number
WO2017149830A1
WO2017149830A1 PCT/JP2016/080685 JP2016080685W WO2017149830A1 WO 2017149830 A1 WO2017149830 A1 WO 2017149830A1 JP 2016080685 W JP2016080685 W JP 2016080685W WO 2017149830 A1 WO2017149830 A1 WO 2017149830A1
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WO
WIPO (PCT)
Prior art keywords
region
absorbent
longitudinal direction
central region
absorbent pad
Prior art date
Application number
PCT/JP2016/080685
Other languages
English (en)
Japanese (ja)
Inventor
浩治 河村
和隆 森
Original Assignee
ユニ・チャーム株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ユニ・チャーム株式会社 filed Critical ユニ・チャーム株式会社
Priority to AU2016395750A priority Critical patent/AU2016395750B2/en
Priority to CN201680082997.7A priority patent/CN108697553B/zh
Publication of WO2017149830A1 publication Critical patent/WO2017149830A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/47—Sanitary towels, incontinence pads or napkins
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/531—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having a homogeneous composition through the thickness of the pad
    • A61F13/532—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having a homogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/531—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having a homogeneous composition through the thickness of the pad
    • A61F13/532—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having a homogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad
    • A61F13/533—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having a homogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad having discontinuous areas of compression
    • 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
    • A61F13/56—Supporting or fastening means

Definitions

  • the present invention relates to an absorbent pad attached to the inside of a diaper.
  • Patent Document 1 discloses a disposable diaper provided with an absorber that absorbs liquid.
  • the absorbent body of this disposable diaper has a central embossed region extending in the longitudinal direction and two side embossed regions formed on both sides of the central embossed region with a space between the central embossed region.
  • the some elastic member is provided in the non-skin surface side rather than the absorber.
  • the region between the central embossed region and each side embossed region is easily bent when worn.
  • an absorbent pad to be installed inside the diaper has been developed.
  • Such an absorbent pad is preferably deformed so as to fit the wearer's body from the viewpoint of preventing liquid leakage.
  • Patent Document 1 only discloses an invention related to a disposable diaper, not an absorbent pad attached to the inside of the diaper, but provides a structure that makes it easier to deform the absorbent body of the disposable diaper into a substantially M shape in the width direction. Yes. However, Patent Document 1 does not consider deformation in the longitudinal direction of the disposable diaper. Moreover, in the disposable diaper of patent document 1, an absorber shrink
  • the absorbent pad according to one aspect relates to an absorbent pad attached to the inside of the diaper.
  • the absorbent pad is provided between the longitudinal direction, the width direction orthogonal to the longitudinal direction, the top sheet, the back sheet, and the absorbent core including an absorbent core made of an absorbent material.
  • an engaging portion that engages with the diaper on the non-skin surface side of the back sheet, and the absorber includes a peripheral region and a central region surrounded by the peripheral region.
  • the central region has a first central region and a second central region disposed before and after the first central region in the longitudinal direction, and the second central region includes the first central region and
  • the absorber has lower rigidity than the peripheral region, and the absorber extends along the longitudinal direction at a boundary between the peripheral region and the central region adjacent to the central region in the width direction, and A pair of low basis weights with lower basis weight than the absorbent material in the region and the peripheral region
  • a first pressing groove extending in the longitudinal direction at the center in the width direction of the absorbent body, and the locking portion includes the first pressing groove in the longitudinal direction. It is provided to avoid the formed area.
  • FIG. 1 is a plan view of an absorbent pad according to an embodiment.
  • FIG. 2 is a cross-sectional view of the absorbent pad taken along line F2-F2 of FIG.
  • FIG. 3 is a plan view of the absorber according to the embodiment.
  • FIG. 4 is a plan view of the absorber viewed from the side opposite to FIG.
  • FIG. 5 is a schematic cross-sectional view along the width direction showing a deformed state of the absorbent pad when a weak force is applied from the laterally outer side to the inner side.
  • FIG. 6 is a schematic cross-sectional view along the width direction showing another shape state of the absorbent pad in a state where a strong force is applied from the outside in the lateral direction to the inside.
  • FIG. 1 is a plan view of an absorbent pad according to an embodiment.
  • FIG. 2 is a cross-sectional view of the absorbent pad taken along line F2-F2 of FIG.
  • FIG. 3 is a plan view of the absorber according to the embodiment.
  • FIG. 7 is a schematic cross-sectional view along the longitudinal direction showing a deformed state of the absorbent pad in a state where a strong force is applied from the outside in the lateral direction to the inside.
  • FIG. 8 is a perspective view showing an example of a diaper to which an absorbent pad is attached.
  • FIG. 9 is a plan view showing the absorbent pad attached to the developed diaper.
  • An absorbent pad to be worn inside the diaper Longitudinal direction, A width direction orthogonal to the longitudinal direction; A surface sheet; A back sheet; An absorbent body provided between the top sheet and the back sheet and including an absorbent core made of an absorbent material; On the non-skin side of the back sheet, it has a locking part that locks to the diaper,
  • the absorber has a peripheral region and a central region surrounded by the peripheral region, The central region has a first central region, and a second central region disposed before and after the first central region in the longitudinal direction, The second central region has lower rigidity than the first central region and the peripheral region,
  • the absorber is A pair of basis weights extending along the longitudinal direction at the boundary between the peripheral region adjacent to the central region in the width direction and the central region, and having a lower basis weight than the absorbent material of the first central region and the peripheral region A low basis weight area; In the central region, having a first pressing groove extending in the longitudinal direction at the center of the absorbent body in the width direction, The said
  • the absorbent pad Since the pair of low basis weight regions are relatively thin regions, the absorbent pad is easily deformed from the low basis weight region as a base point when receiving a force from the outside in the width direction W to the inside. Furthermore, due to the difference in rigidity between the first compressed groove extending in the longitudinal direction at the center in the width direction and the periphery thereof, the central region of the absorbent pad is easily deformed so as to protrude toward the wearer's skin. Therefore, the absorber is deformed into a W shape in a cross section along the width direction by the pair of low basis weight regions and the first pressing groove (FIGS. 5 and 6).
  • the 1st pressing groove given from the non-skin surface side receives force from the width direction W outer side, it will protrude to the skin surface side.
  • the pair of low basis weight regions are deformed so as to be convex toward the non-skin surface side.
  • the absorbent pad is deformed into a W shape as shown in FIGS. Thereby, during wearing, an absorption pad becomes easy to fit a wearer's body.
  • the absorbent pad has a second central region having a lower rigidity than the first central region before and after the first central region in the longitudinal direction.
  • the second central region is less rigid than the first central region and the peripheral region. Therefore, there are two rigidity differences at the boundary of the second central region in the longitudinal direction. Due to the difference in rigidity between the two locations, two bending base points are generated.
  • the boundary of the second central region on the first central region side is inclined obliquely from the convex region (first central region) to the same thickness as the peripheral region (FIG. 7). Further, the boundary of the second central region on the peripheral region side forms a bending base point that is connected to the peripheral region, and is deformed so as to be easily along the body.
  • the absorbent pad is deformed into a substantially W shape in the longitudinal direction at the center in the width direction, and easily follows the roundness of the body. Therefore, the absorption pad is easy to fit to the body as a whole, and thereby it is possible to suppress liquid leakage.
  • the region that is more likely to hit the body that is, the first central region that is likely to hit the crotch portion and the peripheral region that is likely to hit the stomach or the back are regions having relatively high rigidity.
  • the absorbent pad has a locking portion for locking to the diaper on the non-skin side of the back sheet.
  • the locking portion is provided so as to avoid a region where the first pressing groove is formed in the longitudinal direction L.
  • region in which the 1st pressing groove was formed are not latched directly to a diaper. Therefore, it can prevent that a latching part inhibits a deformation
  • the absorbent pad does not have an elastic member having an action of contracting the absorbent pad on the non-skin surface side of the absorbent body.
  • contract too much in a longitudinal direction and can suppress the concavity of an absorber, the unevenness
  • the elastic member does not have a contracting action, so the absorbent body is difficult to return to its original shape.
  • an absorption pad becomes easy to fit a wearer's body, As a result, the leakage of a liquid can be suppressed.
  • the first squeezing groove is provided in the first central region and does not reach the boundary of the first central region in the longitudinal direction.
  • the region where the first pressing groove is provided is in a state of rising due to the force applied from the outside in the width direction to the inside. Since the region from the end of the first compressed groove to the end of the first central region in the longitudinal direction is lower in rigidity than the portion of the first compressed groove, it tends to be a region that transitions from a raised region to a depressed region ( FIG. 7). Thus, since the 1st pressing groove has not reached the boundary of the 1st central region in the longitudinal direction, it becomes easy to change so that the end of the field stood up by the 1st pressing groove may be dented in the longitudinal direction.
  • the low basis weight region may be a region that does not substantially contain the absorbent material.
  • the difference in thickness between the low basis weight region and the surrounding region is increased, and a folding base point is likely to be generated in the low basis weight region. Therefore, when a force is applied from the outside in the width direction to the inside, the absorbent pad and the absorbent body are more easily deformed in the low basis weight region, and the absorbent pad is more easily fitted to the wearer's body (FIG. 5). And FIG. 6).
  • the locking portion may be provided in the peripheral area. Since the locking part is provided in the peripheral region having a relatively high rigidity, it is easy to press the locking part against the diaper. Thereby, it becomes easy to fix an absorption pad to a diaper.
  • the absorbent body in the peripheral region and the first central region, has second compressed grooves formed in a lattice shape.
  • the rigidity of a peripheral region and a 1st center area can be made higher than the rigidity of a 2nd center area by a 2nd pressing groove.
  • a 2nd pressing groove since the 2nd pressing groove is formed in the grid
  • the second compressed groove continuously extends in a direction inclined from the longitudinal direction.
  • a bending base point along the oblique direction is generated by the lattice-shaped second pressing grooves continuously extending in the direction inclined from the longitudinal direction.
  • the second compressed groove is formed only on the non-skin surface side of the absorbent body. Therefore, one surface of the skin side of an absorber becomes as flat as possible, and an absorbent pad comfortable to the wearer can be provided.
  • the second compressed groove extends along the longitudinal direction at least in a region where the locking portion is provided. Since the locking portion itself has a constant rigidity, the locking portion itself does not have a portion that easily becomes a bending base point. However, the 2nd pressing groove formed in the area
  • the second pressing groove has a groove continuously extending in an oblique direction intersecting with each other, and the intersection of the grooves is arranged so as to be shifted from the low basis weight region.
  • region increases about twice.
  • region increases, and the edge of a low basic weight area
  • the locking portion extends from the center of the absorbent pad to the outside of the pair of low basis weight regions in the width direction.
  • the absorbent pad is deformed so as to shrink in the width direction at the crotch due to the deformation of the pair of low basis weight regions and the first pressing groove. Due to this deformation of the crotch region of the absorbent pad and the movement of the wearer's leg, the front and rear regions in the longitudinal direction of the absorbent pad may be deformed to be rounded.
  • the locking portion extends to the outside of the pair of low basis weight regions, the front and rear regions in the longitudinal direction of the absorbent pad can be firmly fixed to the diaper in a wide region in the width direction. it can. Thereby, an absorption pad can be made easy to fit a wearer's stomach
  • the second central region has a convex shape in a direction away from the first central region in the longitudinal direction in plan view.
  • the second central region having lower rigidity than the first central region is curved in a convex shape in the longitudinal direction in plan view. It becomes easier to deform such that the front and rear regions of the second region rotate around the central axis along the longitudinal direction. This makes it easier to fit the absorbent pad along the wearer's body during wear.
  • the width of the low basis weight region in the width direction is larger than the thickness of the absorber in the peripheral region.
  • the width of the low basis weight region in the width direction W from the viewpoint of facilitating the peripheral region of the absorber to enter under the absorption core in the center region. Is preferably larger than the total value of the thickness of the absorber in the peripheral region and the thickness of the absorber in the central region.
  • a boundary between the peripheral region and the central region is linearly formed on the inner side in the width direction toward the outer side in the longitudinal direction. Inclined.
  • the boundary of the peripheral region is more likely to be a folding base point than the curved boundary, and the central region of the absorbent pad fits the wearer's body. It becomes easy to deform.
  • an absorption pad bends beautifully in the boundary of a peripheral area
  • the width of the absorbent pad in the width direction is larger than the minimum width in the width direction of the absorbent body disposed in the crotch region of the diaper.
  • the absorbent pad exists up to a region wider than the absorbent body of the diaper, so that the liquid hardly leaks to the diaper 1. This has the advantage that only the absorbent pad needs to be replaced many times without replacing the diaper.
  • the absorbent pad includes a side sheet that covers an outer portion of the top sheet in the width direction, and a stretchable elastic member that is attached to the side sheet.
  • the expansion / contraction rate is in the range of 2.0 to 2.5 times. Due to the contracting action of the elastic member, the side sheet rises and the lateral leakage of the liquid can be suppressed.
  • the elastic member since the elastic member has a relatively low expansion / contraction rate of 2.0 to 2.5 times, it is possible to suppress the amount of the entire absorber and the absorbent pad to shrink in the longitudinal direction.
  • the absorption pad of this invention is related with the absorption pad with which the inner side of a disposable diaper is mounted
  • the disposable diaper may be an adult diaper.
  • FIG. 1 is a plan view of an absorption pad according to an embodiment.
  • FIG. 1 shows the absorbent pad in a stretched state.
  • FIG. 2 is a cross-sectional view of the absorbent pad taken along line F2-F2 of FIG.
  • FIG. 3 is a plan view of the absorbent body provided in the absorbent pad, as viewed from the skin surface side facing the wearer's skin.
  • FIG. 4 is a plan view of the absorber viewed from the side opposite to FIG.
  • the absorbent pad 10 has a longitudinal direction L and a width direction W.
  • the longitudinal direction L is a direction extending from the front side (abdomen side) of the wearer to the rear side (back side), or a direction extending from the rear side of the wearer to the front side.
  • the width direction W is a direction orthogonal to the longitudinal direction L.
  • the side facing the wearer's skin during use may be referred to as the “skin side”.
  • a side that is directed away from the wearer's skin during use may be referred to as a “non-skin side”.
  • the absorbent pad 10 includes a top sheet 20, a back sheet 22, and an absorber 30.
  • the topsheet 20 faces the wearer's skin when the absorbent pad 10 is worn.
  • the top sheet 20 covers the absorber 30.
  • the top sheet 20 may be composed of a liquid permeable sheet.
  • the back sheet 22 When the absorbent pad 10 is worn, the back sheet 22 is directed to the side opposite to the wearer's skin and faces the disposable diaper.
  • the back sheet 22 may be composed of a liquid-impermeable sheet.
  • the absorbent pad 10 may have a side sheet 50 and an elastic member 52.
  • the side sheet 50 extends from the non-skin surface side of the back sheet 22 through the outer edge in the width direction W of the absorbent pad 10 to the top sheet 20 side.
  • the inner side portion of the side sheet 50 in the width direction W is folded back on the top sheet 20 side.
  • the side sheet 50 wraps the elastic member 52.
  • the elastic member 52 is attached to the side seat 50 in a state of extending in the longitudinal direction L.
  • the elastic member 52 is in a contracted state in which no external force is applied, whereby an upright gather is formed on the side sheet 50 on the side of the topsheet 20. This standing gather can suppress the lateral leakage of the liquid.
  • At least one elastic member 52 is provided on each side across the center in the width direction W. As shown in FIG. 2, it is preferable that one elastic member 52 is provided on each side across the center in the width direction W. Thereby, it can suppress that the contractive force of the elastic member 52 becomes strong too much.
  • the elongation rate of the elastic member 52 is preferably in the range of 2.0 times to 2.5 times.
  • the expansion / contraction rate of the elastic member 52 is relatively low, the amount by which the absorber 30 and the entire absorbent pad 10 contract in the longitudinal direction L can be suppressed.
  • the absorbent body 30 and the entire absorbent pad 10 is warped, the irregularities on the surface of the absorbent body 30, the absorbent body 30 and the skin of the wearer. A gap can be further suppressed in between.
  • the elongation rate is measured as follows, for example. First, the arrangement area of the standing gathers of the absorbent pad 10 is cut out. The elongation rate of the sample of the standing gathers after being cut out is measured, and the elongation rate of the elastic member 52 is measured.
  • Each sample cut out is left for 60 minutes in an atmosphere of 20 ° C. ⁇ 2 ° C. and a relative humidity of 60% ⁇ 5% RH, and the length of the sample is measured along the stretching direction. This length is defined as “the length of the leg expansion / contraction part in the natural state”.
  • the length of the desired region in the stretching direction in such a state (that is, the natural state), and the desired region when stretched from the natural state to a state where wrinkles due to the elastic member cannot be visually confirmed on the side sheet. Measure the length in the stretch direction. This length is defined as “the length of the elastic member in the extended state”.
  • the elongation percentage is measured by calculating with the above formula.
  • the absorbent pad 10 preferably does not have an elastic member having a function of contracting the absorbent pad 10 on the non-skin surface side of the absorbent body 30.
  • the absorber 30 and the absorption pad 10 shrink
  • the elastic member 52 does not act to contract, so the absorber 30 is unlikely to return to its original shape.
  • the absorption pad 10 becomes easy to fit a wearer's body, As a result, the leakage of a liquid can be suppressed.
  • the absorber 30 is provided between the top sheet 20 and the back sheet 22.
  • the absorber 30 includes an absorbent core 32 made of an absorbent material.
  • the absorbent material constituting the absorbent core 32 can be formed from, for example, hydrophilic fibers, pulp, and superabsorbent polymer (SAP).
  • SAP superabsorbent polymer
  • the absorber 30 has a core wrap 34 that wraps the absorbent core 32.
  • the core wrap 34 can be made of, for example, a nonwoven fabric or a tissue sheet.
  • the absorbent core 32 preferably has a single layer structure.
  • the absorbent cores 32 in each region are arranged without overlapping each other in the thickness direction. Thereby, the thickness of the absorber 30 can be suppressed.
  • the absorbent pad 10 since the absorbent pad 10 is attached to the diaper during use, it is preferable that the absorbent pad 10 be as thin as possible from the viewpoint of comfort.
  • the absorbent core 32 has a plurality of absorption layers, a gap may be generated between the absorption layers when the absorber 30 is deformed when receiving force from the outside in the width direction W. is there. Therefore, the absorbent core 32 is preferably a single layer from the viewpoint of stably maintaining the shape of the absorber.
  • the absorber 30 has a central region C and a peripheral region P.
  • the central region C is a region that includes the center of the absorber 30 and does not include the edge of the absorber 30. When the absorbent pad is worn, the central region C is located at the wearer's crotch.
  • the peripheral area P is an area surrounding the central area C and includes the edge of the absorber 30.
  • the central region C has a first central region C1 and a second central region C2 arranged before and after the first central region C1 in the longitudinal direction L.
  • the second central region C2 has lower rigidity than the first central region C1 and the peripheral region P.
  • the rigidity value is defined as a value obtained by dividing a value measured by the Gurley bending resistance by the length of the sample piece.
  • the Gurley bending resistance no.
  • a 311 Gurley type flexibility tester manufactured by Yasuda Seiki Seisakusho
  • This testing machine complies with JIS-L1096.
  • This testing machine is a testing machine that measures the flexibility (bending resilience) of a sample piece.
  • R is the reading of the scale plate
  • D1, D2, and D3 are distances from the pendulum fulcrum to the weight mounting position (25.4 mm (1 in.), 50.8 mm (2 in.), 101.6 mm (4 in. ))
  • W1, W2, and W3 are the weights (g) of the weights attached to the holes D1, D2, and D3
  • L is the length of the sample piece (mm)
  • b is the width of the sample piece ( mm).
  • the sample piece is obtained by cutting the absorbent body of the absorbent pad 10 into a rectangular parallelepiped having a longitudinal direction of 38 mm and a width direction of 17.5 mm.
  • the length L of the sample piece is 38 mm
  • the width b of the sample piece is 17.5 mm.
  • the Gurley stiffness (mN) per 38 mm length of the sample piece is measured.
  • the longitudinal direction (The conveyance direction (MD direction) at the time of manufacture) of the absorption pad 10 is mentioned, for example, it is not limited to this.
  • the second compressed groove 46 is formed in the absorbent body 30 in the peripheral region P.
  • the second pressing groove 46 may be provided entirely in the peripheral region P.
  • the 2nd pressing groove 46 is formed in the grid
  • the 2nd pressing groove 46 may be formed in linear form along the 1st direction and the 2nd direction which cross
  • the first direction and the second direction are directions inclined with respect to the longitudinal direction L.
  • the rigidity of the peripheral area P and the first central area C1 can be made higher than the rigidity of the second central area C2 by the second pressing groove 46. Moreover, since the 2nd pressing groove 46 is formed in the grid
  • the second squeezing groove 46 preferably extends continuously in a direction inclined from the longitudinal direction L.
  • a bending base point along the oblique direction is generated by the lattice-shaped second pressing grooves 46 continuously extending in the direction inclined from the longitudinal direction L.
  • the second pressing groove 46 is provided on the non-skin surface side of the absorbent body 30. Thereby, one surface of the skin surface side of the absorber 30 becomes as flat as possible, and an absorbent pad comfortable to the wearer can be provided. Moreover, in order to provide a more comfortable absorption pad, it is preferable that the pressing groove is not given to the skin surface side of the absorber 30.
  • the 2nd pressing groove 46 is extended along the longitudinal direction L in the area
  • the second pressing groove 46 may have a plurality of grooves continuously extending in an oblique direction intersecting each other, and the intersections of these grooves may be arranged so as to be shifted from the low basis weight region 42.
  • the number of the edges of the grooves located at the boundary of the low basis weight region 42 is increased approximately twice. .
  • region C becomes high, and the edge of the low basic weight area
  • the boundary between the peripheral region P and the central region C is inclined linearly inward in the width direction W toward the outer side of the longitudinal direction L outside the lower basis weight region 42 described later in the longitudinal direction L. Is preferred.
  • the boundary between the peripheral region P and the central region C is defined by the second pressing groove 46.
  • the absorber 30 has the 1st pressing groove 40 and a pair of low basic weight area
  • the first pressing groove 40 is applied to the non-skin surface side of the absorbent body 30 in the central region C.
  • the first pressing groove 40 extends in the longitudinal direction L at the center in the width direction W.
  • the length of the first pressing groove 40 in the longitudinal direction L may be shorter than the length of the pair of low basis weight regions 42 in the longitudinal direction L.
  • the pair of low basis weight regions 42 extend along the longitudinal direction L.
  • the pair of low basis weight regions 42 is provided at the boundary between the peripheral region P and the central region C adjacent to the central region C in the width direction W.
  • the low basis weight region 42 is defined by a region composed of an absorbent core having a basis weight lower than the basis weight (weight per unit area) of the absorbent core 32 in the central region C and the peripheral region P, or a region substantially not including the absorbent core. .
  • the low basis weight region 42 may be a region including an absorbent core having a basis weight of 0 to 200 g / m 2 .
  • the low basis weight region 42 is a region including an absorbent core having a basis weight of preferably 150 g / m 2 or less, more preferably 100 g / m 2 or less.
  • the low basis weight area 42 becomes a boundary where the rigidity of the absorbent pad 10 changes. Accordingly, the low basis weight region 42 corresponds to a region where the absorbent pad 10 is easily deformed.
  • the low basis weight area 42 may be an area that does not substantially contain an absorbent material. That is, the low basis weight area 42 is a concept including an area where the basis weight of the absorbent core 32 is zero.
  • the region that does not substantially include the absorbent core means a region that does not include the absorbent material constituting the absorbent core 32 in design.
  • the region that does not substantially include the absorbent core is a concept that includes a region in which a small amount of absorbent material is mixed during manufacturing, and is 5% or less of the basis weight of the second central region C2 adjacent to the low basis weight region 42. Is defined as a concept that may contain an absorbent material.
  • the low basis weight region 42 is a region that does not substantially contain an absorbent material
  • the difference in thickness between the low basis weight region 42 and the surrounding region becomes large, and the low basis weight region 42 becomes a bending base point. easy. Therefore, when a force is applied from the outside to the inside in the width direction W, the absorbent pad 10 and the absorbent body 30 are more easily deformed at the low basis weight region 42 as described later (see FIGS. 5 and 6). . Therefore, it becomes easier for the absorbent pad 10 to fit the wearer's body. Further, when the low basis weight region 42 is a region that does not substantially contain the absorbent material, the crease is easily formed, so that it is easy to hold the bent shape once, and the deformation as shown in FIGS. 5 and 6 is easily performed. .
  • the portion on the skin surface side of the core wrap 34 that wraps the absorbent core 32 is the core wrap 34 that wraps the absorbent core 32 in the low basis weight region 42. It is preferable that it is joined to the non-skin side portion. Thereby, since the core wrap 34 can wrap the absorption core 32 (absorption material) firmly, it can suppress a deformation
  • the width W1 of the low basis weight region 42 in the width direction W is preferably larger than the thickness T2 of the absorber 30 in the peripheral region P.
  • the width of the low basis weight region 42 in the width direction W is preferably 10 to 25 mm, more preferably 15 mm.
  • the distance W2 between the pair of low basis weight regions 42 is preferably shorter than the total width (W3 + W3) of the peripheral region P in the width direction W at the center position in the longitudinal direction L.
  • the absorbent pad 10 is deformed into a substantially W shape in a cross section along the width direction W as shown in FIG.
  • the height of the peripheral region P becomes sufficiently high, so that leakage of liquid from the outside in the width direction W of the absorbent pad 10 can be further prevented.
  • the distance between the pair of low basis weight regions 42 may be 45 to 65 mm, for example.
  • the “length”, “width”, and “distance” described in the present specification are values measured in a state where the absorbent pad 10 is stretched until there is no wrinkle.
  • the absorbent core 32 preferably extends to the edge of the absorbent pad 10 in the width direction W within the range of the longitudinal direction L where the low basis weight region 42 is provided.
  • the region where the absorbent core 32 exists is a region having relatively high rigidity in the absorbent pad 10. That is, the relatively rigid region extends to the edge in the width direction W of the absorbent pad 10. Accordingly, when a force directed inward in the width direction from the edge in the width direction W of the absorbent pad 10 is applied, the force is efficiently transmitted to the pair of low basis weight regions 42 and the center region C. Thereby, the absorption pad 10 becomes easier to deform
  • the absorbent core 32 has a linear outline along the longitudinal direction L at least in the range of the longitudinal direction L where the low basis weight region 42 is provided.
  • the absorbent pad 10 may have a locking portion 90 that locks to the diaper on the non-skin surface side of the back sheet 22.
  • the locking portion 90 is perspectively shown by a dotted line.
  • the locking portion 90 is preferably provided so as to avoid a region where the first pressing groove 40 is formed in the longitudinal direction L. Thereby, the area
  • the locking portion 90 may be provided in the peripheral area P. Since the latching
  • the locking portion 90 extends from the center of the absorbent pad 10 to the outside of the pair of low basis weight regions 42 in the width direction W.
  • the absorbent pad is deformed so as to contract in the width direction W at the crotch due to the deformation of the pair of low basis weight regions 42 and the first pressing groove 40. Due to the deformation of the crotch region of the absorbent pad and the movement of the wearer's leg, the front and rear regions in the longitudinal direction of the absorbent pad may be deformed to be rounded.
  • locking part 90 is extended to the outer side of a pair of low basic weight area
  • an absorption pad can be made easy to fit a wearer's stomach
  • the top sheet 20 and the absorbent body 30 extend to the outer end in the width direction W in a central portion of the absorbent pad 10, for example, in a range where the central region C exists at least along the longitudinal direction L. Yes. Thereby, even if the thickness of the absorber 30 is reduced, the liquid such as urine diffused to the outer end portion in the width direction W of the absorption pad 10 can be absorbed, so that the liquid hardly leaks from the absorption pad 10.
  • topsheet 20 and the absorbent body 30 extend to the outer end portion in the width direction W, relatively high rigidity is maintained up to the outer end portion in the width direction W of the absorbent pad 10, and as a result, the absorbent pad The force received from the side of 10 is easily transmitted to the central region C.
  • FIG. 5 shows the deformation of the absorbent pad when the absorbent pad receives a weak force from the outside to the inside in the width direction W.
  • FIG. 6 shows the deformation of the absorbent pad when the absorbent pad receives a strong force from the outside to the inside in the width direction W.
  • 5 and 6 show a cross section along the width direction of the absorbent pad.
  • FIG. 7 shows a cross section along the longitudinal direction of the absorbent pad.
  • the 2nd pressing groove 46 is not shown for the simplification of a figure.
  • the absorbent pad 10 is sandwiched between both legs of the wearer during use and receives a force directed from the outside to the inside in the width direction W.
  • the peripheral region P tends to move toward the central region C while the outer portion of the peripheral region P in the width direction W rises upward (see FIG. 5).
  • the first central area C ⁇ b> 1 is pressed by the peripheral area P and deforms into a convex shape toward the wearer's skin.
  • the 1st pressing groove 40 is formed in the non-skin-surface side of the 1st center area C, the absorber 30 tends to deform
  • the absorbent pad 10 Since the pair of low basis weight regions 42 are relatively thin regions, the absorbent pad 10 is easily deformed with the low basis weight region 42 as a base point when receiving a force from the outside in the width direction W to the inside. Therefore, the absorber is deformed into a W shape in a cross section along the width direction by the pair of low basis weight regions 42 and the first compressed grooves 40 (FIGS. 5 and 6). Specifically, when the 1st pressing groove 40 given from the non-skin surface side receives force from the width direction W outer side, it will protrude to the skin surface side. Along with this deformation, the pair of low basis weight regions 42 are deformed so as to protrude toward the non-skin surface side. As a result, the absorbent pad is deformed into a W shape as shown in FIGS. Thereby, during wearing, an absorption pad becomes easy to fit a wearer's body.
  • the absorbent pad has a second central region C2 having lower rigidity than the first central region C1 before and after the first central region in the longitudinal direction.
  • the first central region C1 and the peripheral region P ⁇ BR> ⁇ ⁇ ⁇ ⁇ ⁇ are low. Accordingly, there are two rigidity differences at the boundary of the second central region C2 in the longitudinal direction. Due to the difference in rigidity between the two locations, two bending base points are generated.
  • the boundary of the second central region C2 on the first central region C1 side is inclined obliquely from the convex region (first central region C1) to the same thickness as the peripheral region P (FIG. 7).
  • the boundary of the second central region C2 on the peripheral region P side forms a bending base point connected to the peripheral region P, and is deformed so as to be easily along the body.
  • the absorbent pad is deformed into a substantially W shape in the longitudinal direction at the center in the width direction, and easily follows the roundness of the body. Therefore, the absorption pad is easy to fit to the body as a whole, and thereby it is possible to suppress liquid leakage.
  • the first squeezing groove 40 is provided in the first central region C1 and preferably does not reach the boundary of the first central region C1 in the longitudinal direction L. As described above, as shown in FIG. 7, the region where the first pressing groove 40 is provided is brought up by the force applied from the outside in the width direction W to the inside. In the longitudinal direction L, the region C1a from the end of the first compressed groove 40 to the end of the first central region C1 is lower in rigidity than the portion of the first compressed groove 40, and thus transitions from a raised region to a depressed region. It is easy to become a region to perform (FIG. 7).
  • the 1st pressing groove 40 since the 1st pressing groove 40 has not reached the boundary of the 1st central region C1 in the longitudinal direction L, it deform
  • the peripheral region P of the absorber 30 is relatively high in rigidity, so that its shape is maintained and the bottom of the absorbent core 32 in the central region C is maintained. Easy to enter (see FIG. 6). Therefore, the absorber 30 in the central region C can be deformed so as to fit the body while the entire width of the absorbent pad 10 is reduced. Since the width W1 of the low basis weight region 42 is larger than the thickness T2 of the absorbent body 30 in the peripheral region P, there is an advantage that even if the absorbent pad 10 is deformed in this way, the entire thickness of the absorbent pad 10 does not become too large. is there.
  • the peripheral region P of the absorbent body 30 is low in the width direction W from the viewpoint of making it easier to enter under the absorbent core 32 in the center region C.
  • the width W1 of the basis weight region 42 is preferably larger than the total value of the thickness T2 of the absorber 30 in the peripheral region P and the thickness T1 of the absorber 30 in the central region C.
  • the second central area C1 has a convex shape in a direction away from the first central area C1 in the longitudinal direction L in plan view (see FIG. 4).
  • the second central region C ⁇ b> 2 having lower rigidity than the first central region C ⁇ b> 1 is curved convexly in the longitudinal direction in plan view.
  • FIG. 8 is a perspective view showing an example of a diaper to which an absorbent pad is attached.
  • FIG. 9 is a plan view showing the absorbent pad attached to the developed diaper.
  • FIG. 9 shows the absorbent pad and diaper in a stretched state.
  • the disposable diaper may be a diaper for adults, for example.
  • the disposable diaper 1 may have a pant-type structure as an example.
  • the disposable diaper 1 has a waist area applied to the wearer's waist and a crotch area applied to the wearer's crotch.
  • the waistline edges 4, 4 'located on the outer side in the width direction W of the front waistline region are joined to the rear waistline edges 6, 6' located on the outside in the lateral direction W of the rear waistline region S2, respectively.
  • the diaper 1 is formed in a pants shape.
  • the disposable diaper 1 has a pair of leg-hole openings 9 surrounding the wearer's leg in a pant-shaped state.
  • the crotch region is a region between the pair of leg openings 9.
  • Disposable diaper 1 includes an absorbent main body 1A.
  • the absorbent main body 1A may include a top sheet, a back sheet, and an absorber 130 between the top sheet and the back sheet.
  • the absorber 130 is provided at least in the crotch region.
  • the absorber 130 may be formed of a mixed powder such as pulverized pulp or a superabsorbent polymer.
  • the above-described absorbent pad 10 is attached to the crotch region of the disposable diaper 1. After the wearer excretes, only the absorbent pad 10 can be replaced. Thereby, a disposable diaper can be used for a long time.
  • the width W4 of the absorbent pad 10 in the width direction W is preferably larger than the minimum width W5 in the width direction W of the absorber 130 disposed in the crotch region of the diaper.
  • the absorbent pad 10 exists up to a region wider than the absorbent body 130 of the diaper 1, so that the liquid hardly leaks to the diaper 1. Thereby, there is an advantage that only the absorbent pad 10 needs to be replaced many times without replacing the diaper.
  • the compressed part 132 may be formed in the absorber 130 of the disposable diaper 1.
  • the pressing part 132 extends along the longitudinal direction L.
  • the pressing part 132 is likely to be a base point for deformation of the disposable diaper 1 when force is applied to the disposable diaper 1 from the outside to the inside in the width direction.
  • the compressed portion 132 preferably overlaps at least partially with the low basis weight region 42 of the absorbent pad 10. That is, the bending base point in the low basis weight area 42 of the absorbent pad 10 and the bending base point in the pressing part 132 of the disposable diaper 1 are arranged at substantially the same position. Therefore, when a force is applied from the outside to the inside in the width direction, there is an advantage that both the diaper 1 and the absorbent pad 10 are easily deformed at the low basis weight region 42 as shown in FIGS.

Landscapes

  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Absorbent Articles And Supports Therefor (AREA)

Abstract

La présente invention concerne un tampon absorbant se fixant sur la partie intérieure d'une couche et qui s'adapte aisément au corps lorsqu'il est porté. Le tampon absorbant (10) se fixant sur la partie intérieure d'une couche comprend une feuille avant (20), une feuille arrière (22), un corps absorbant (30) et une partie d'attache (90) servant à fixer le tampon absorbant à la couche. Le corps absorbant comprend une zone périphérique (P) et une zone centrale (C), entourée par la zone périphérique. La zone centrale comprend une première région centrale (C1) et une seconde région centrale (C2), placée devant et derrière la première région centrale dans la direction longitudinale (L). Les secondes régions centrales présentent une rigidité inférieure à celle de la première région centrale et de la zone périphérique. Le corps absorbant comprend une paire de zones (42) à faible grammage qui s'étendent dans la direction longitudinale au niveau de limites entre la zone centrale et la zone périphérique, et sont adjacentes à la zone centrale dans le sens de la largeur (W) ; et une première rainure (40) comprimée s'étendant dans la direction longitudinale, dans la zone centrale, au centre dans le sens de la largeur du corps absorbant. La partie d'attache (90) est prévue de façon à éviter la zone dans laquelle la première rainure comprimée est formée dans la direction longitudinale.
PCT/JP2016/080685 2016-03-01 2016-10-17 Tampon absorbant WO2017149830A1 (fr)

Priority Applications (2)

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AU2016395750A AU2016395750B2 (en) 2016-03-01 2016-10-17 Absorbent pad
CN201680082997.7A CN108697553B (zh) 2016-03-01 2016-10-17 吸收垫

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JP2016039463A JP6147882B1 (ja) 2016-03-01 2016-03-01 吸収パッド
JP2016-039463 2016-03-01

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JP7097260B2 (ja) * 2018-08-14 2022-07-07 ユニ・チャーム株式会社 使い捨ておむつ
JP7305852B1 (ja) 2022-07-15 2023-07-10 ユニ・チャーム株式会社 パンツ型吸収性物品

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CN108697553A (zh) 2018-10-23
AU2016395750B2 (en) 2021-03-11
AU2016395750A1 (en) 2018-10-11
JP2017153703A (ja) 2017-09-07
CN108697553B (zh) 2021-01-12

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