WO2018142920A1 - Article absorbant - Google Patents

Article absorbant Download PDF

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Publication number
WO2018142920A1
WO2018142920A1 PCT/JP2018/001026 JP2018001026W WO2018142920A1 WO 2018142920 A1 WO2018142920 A1 WO 2018142920A1 JP 2018001026 W JP2018001026 W JP 2018001026W WO 2018142920 A1 WO2018142920 A1 WO 2018142920A1
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WO
WIPO (PCT)
Prior art keywords
absorbent article
longitudinal direction
width direction
basis weight
absorber
Prior art date
Application number
PCT/JP2018/001026
Other languages
English (en)
Japanese (ja)
Inventor
望 前谷
工藤　淳
健太 谷口
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
Publication of WO2018142920A1 publication Critical patent/WO2018142920A1/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
    • 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
    • A61F13/53—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
    • 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

Definitions

  • the present invention relates to an absorbent article.
  • Sanitary napkins are known as absorbent articles that absorb excreted fluid such as menstrual blood.
  • the napkin has a longitudinal direction, a width direction, and a thickness direction orthogonal to each other.
  • the napkin has an absorbent body mainly composed of liquid absorbent fibers between a liquid-permeable top sheet and a liquid-impermeable back sheet.
  • Patent Document 1 discloses that an appropriate slit is provided to facilitate deformation of the absorbent body, so that it is easy to fit the wearer's body at the time of wearing and to prevent liquid leakage.
  • a napkin for use is disclosed.
  • the present invention has been made in view of the above problems, and the object of the present invention is to realize good fit even when the wearer exercises while wearing the wearer. It is to provide an absorbent article.
  • a main invention for achieving the above object has a longitudinal direction and a width direction orthogonal to each other, and is provided along the width direction with a liquid-absorbing absorbent body spaced from the longitudinal direction.
  • a plurality of folds, wherein the absorber is behind the excretion port contact region that contacts the excretion port of the wearer in the longitudinal direction among the plurality of folds, and the excretion port contact region An absorbent article having constricted portions that are recessed inward in the width direction on both sides in the width direction in a region on the rear side of the rear fold line disposed at a position closest to It is.
  • FIG. 2 is a schematic cross section taken along line AA in FIG. It is the schematic plan view which looked at the absorber 10 from the skin side of the thickness direction. 4 is an enlarged plan view of a rear region in the longitudinal direction of the absorbent body 10.
  • a liquid-absorbing absorber having a longitudinal direction and a width direction orthogonal to each other, and a plurality of creases provided along the width direction at intervals in the longitudinal direction; Is the rear side of the excretory opening contact area that is in contact with the excretion opening of the wearer in the longitudinal direction among the plurality of folds, and is located at the position closest to the excretion opening contact area;
  • An absorbent article having a constricted portion in which both sides in the width direction are recessed inward in the width direction in a region behind the fold.
  • the rear region of the absorber is easily bent and deformed so as to be twisted obliquely with the neck portion as a base point. Therefore, the rear area of the absorbent body fits firmly against the curved surface of the wearer's body (buttock) and easily deforms following the movement of the buttocks, realizing good fit. can do.
  • this absorbent article Comprising: It has a linear pressing part with which a plurality of pressing parts were arranged from the back side of the longitudinal direction to the front side, and from the outside of the width direction toward the inside, and the linear pressing part It is desirable that an extension line extending toward the outside in the width direction intersects with an outer edge of the absorber in the constricted portion.
  • the bent line formed from the outer edge of the absorbent body in the constricted part is easily guided to the linear compressed part, and the bent deformation of the absorbent body is aligned with the linear compressed part. It becomes easier to guide in the direction. Thereby, it becomes possible to control the bending deformation of the absorbent body more accurately, and it is possible to improve the fit of the absorbent body when the absorbent article is mounted.
  • the absorbent body has a second constricted portion in which both sides in the width direction are recessed inward in the width direction in a region on the rear side in the longitudinal direction from the constricted portion. It is desirable that
  • the absorber is bent and deformed step by step with the two constricted portions as base points, respectively, thereby making it easier to follow the complex movement of the buttocks and improving the fit. it can.
  • the appearance of the rear side of the absorber becomes a substantially cloud shape, which improves design and gives the user an image of comfort and security. it can.
  • Such an absorbent article wherein a plurality of pressing parts are linear pressing parts arranged from the rear side to the front side in the longitudinal direction and from the outer side to the inner side in the width direction, the outer side in the width direction
  • the first constricted portion intersects the outer edge of the absorber
  • the second constricted portion intersects the outer edge of the absorber when extended to the outside in the width direction.
  • a second linear squeezing part, and an intersection of the extension line of the first linear squeezing part and the extension line of the second linear squeezing part does not overlap with the absorber. desirable.
  • the smaller of the angles formed by the tangent to the outer edge of the absorbent body on the front side in the longitudinal direction of the constricted portion and the width direction, and the rear of the constricted portion in the longitudinal direction is different.
  • the width of the absorber is different between the front region and the rear region in the longitudinal direction of the constricted portion, and the rigidity is different, so that the absorber is easily bent and deformed. That is, the bending deformation of the absorber can be easily controlled by adjusting the shape of the constricted portion. Thereby, it becomes easy to improve the fit of an absorber.
  • the smaller one of the angles formed by the tangent to the outer edge of the absorbent body on the front side in the longitudinal direction of the constricted portion and the width direction is the rear of the constricted portion in the longitudinal direction. It is desirable that the angle is smaller than the smaller one of the angles formed by the tangent to the outer edge of the absorber on the side and the width direction.
  • the absorbent body has a predetermined basis weight, and the absorbent body is provided on both sides in the width direction on the rear side in the longitudinal direction, and the basis weight is the predetermined basis weight. It is desirable to have a pair of low side weight portions on both sides that are lower than the basis weight, and in the longitudinal direction, the low side weight portions on both sides overlap at least a part of the rear fold. .
  • the basis weight of the absorbent body is smaller than the basis weights of the front and rear regions, and the rigidity is low. Further, the low-rigidity portion overlaps at least partly with the rear fold, so that the absorber is naturally bent and deformed easily at the positions of the low-basis-weight portions on both sides.
  • region of the rear side of a longitudinal direction rather than a both-sides low basic weight part becomes easy to fit a wearer's buttocks on a surface.
  • the basis weight of the absorbent body in the pair of both side low basis weight portions is zero.
  • the minimum value of the width of the absorber in the portion where the low-basis-weight portions on both sides are provided is larger than the minimum value of the width of the absorber in the constricted portion.
  • the absorber is suppressed from being excessively dented inward and can take a large area, so that the rear region of the absorber can cover the wearer's buttocks widely, It is possible to sufficiently secure the liquid absorption performance (absorption capacity) of the absorber in the region.
  • the absorbent body is provided between the pair of low side weight portions on both sides in the width direction on the rear side in the longitudinal direction, and has a predetermined length in the longitudinal direction. It is desirable to have a belt-like belt-like low basis weight part whose basis weight is lower than the predetermined basis weight.
  • the region divided in the width direction by the belt-like low basis weight portion in the longitudinal direction rear side region of the absorbent body follows the movement of the wearer's buttocks, respectively. It becomes possible to operate individually. Therefore, it is suppressed that an absorber touches or leaves
  • the basis weight of the absorbent body in the belt-like low basis weight portion is zero.
  • regions of the longitudinal direction back side of an absorber is in the state mutually separated, each said area
  • the absorbent body does not have the constricted portion in a region on the front side in the longitudinal direction from the rear fold.
  • a sanitary napkin 1 (hereinafter also simply referred to as napkin 1) will be described as an example of the absorbent article according to the present embodiment.
  • a sanitary napkin will be described as an example of the absorbent article.
  • the absorbent article of the present embodiment also includes a so-called cage sheet (for example, a panty liner) and the like. It is not limited.
  • FIG. 1 is a schematic plan view of the napkin 1 viewed from the skin side in the thickness direction.
  • FIG. 2 is a schematic plan view of the napkin 1 viewed from the non-skin side in the thickness direction.
  • FIG. 3 is a schematic cross section taken along line AA in FIG.
  • FIG. 4 is a schematic plan view of the absorbent body 10 as viewed from the skin side in the thickness direction.
  • each direction is defined as shown in FIGS. That is, the “longitudinal direction” along the product longitudinal direction of the napkin 1, the “width direction” orthogonal to the longitudinal direction along the product short direction of the napkin 1, and the “thickness” orthogonal to the longitudinal direction and the width direction, respectively.
  • the longitudinal direction has a “front side” that is a direction on the stomach side of the user when the napkin 1 is used, and a “rear side” that is a direction on the back side of the user.
  • the thickness direction is the “skin side” that is the side (upper side in FIG. 3) that contacts the wearer's skin when the napkin 1 is worn, and the “non-skin side” that is the opposite side (lower side in FIG. 3).
  • the napkin 1 is a sheet-like member having a vertically long shape in plan view, and the pair of side sheets 2, the top sheet 3, the second sheet 4, the absorbent body 10, and the back sheet 5 are not seen from the skin side in the thickness direction. It is formed by being laminated in order on the skin side (see FIG. 3).
  • Each of these members 2, 3, 4, 10, and 5 is joined to a member adjacent in the thickness direction with an adhesive (not shown) such as a hot melt adhesive.
  • an adhesive such as a hot melt adhesive.
  • the adhesive application pattern include an ⁇ pattern, a spiral pattern, and a stripe pattern.
  • the napkin 1 has a napkin main body portion 20 provided with the absorbent body 10 and a pair of wing portions 30 extending from the longitudinal center region of the napkin main body portion 20 to both outer sides in the width direction.
  • the central region in the longitudinal direction in which the wing portion 30 is provided is a region that comes into contact with the excretion opening (crotch portion) of the wearer when the napkin 1 is worn. That is, the napkin 1 has an “excretion opening contact area” at the center in the longitudinal direction.
  • a region on the rear side in the longitudinal direction from the excretory opening contact region is simply referred to as a “rear region”, and a region on the front side in the longitudinal direction from the excretion port contact region is simply referred to as a “front region”. There is.
  • the top sheet 3 is a liquid-permeable sheet, and examples thereof include an air-through nonwoven fabric.
  • the back sheet 5 is a liquid-impermeable sheet, and examples thereof include a polyethylene (PE) resin film.
  • the side sheet 2 may be a liquid-permeable sheet or a liquid-impermeable sheet, and examples thereof include the same air-through nonwoven fabric as the top sheet 3.
  • the top sheet 3 and the back sheet 5 have a planar size larger than that of the absorber 10. And as FIG.1 and FIG.2 shows, these sheet
  • the pair of side sheets 2 extends from both sides in the width direction of the top sheet 3 to the outside in the width direction, and forms a pair of wing portions 30 together with the back sheet 5.
  • the second sheet 4 is a liquid-permeable sheet and can be exemplified by the same air-through nonwoven fabric as the top sheet 3.
  • the second sheet 4 is provided on the skin side surface of the absorbent body 10 and plays a role of preventing the return of excrement such as menstrual blood, improving the diffusion of excrement, and improving cushioning properties.
  • the napkin 1 may not have the second sheet 4.
  • the adhesive part 21 for parts is provided.
  • the main body adhesive section 21 is affixed to the side of the skin such as underwear, whereby the napkin 1 is fixed to the underwear or the like.
  • the central main body adhesive portion 21 c disposed in the central portion in the longitudinal direction, and the front main body disposed in the longitudinal front side relative to the central main body adhesive portion 21 c.
  • An adhesive portion for part 21f and an adhesive portion for rear side body portion 21r arranged on the rear side in the longitudinal direction from the central body portion adhesive portion 21c are provided.
  • the adhesive part 31 for wing parts is provided in the non-skin side surface in the thickness direction of each wing part 30 (that is, the non-skin side surface of the back sheet 5).
  • the wing part 30 is bent to the non-skin side, and the adhesive part 31 for the wing part is attached to the non-skin side surface such as underwear, whereby the napkin 1 is fixed to the underwear or the like.
  • the adhesive part 31 for wing parts shown in FIG. 2 is a rectangular adhesive part having a long side in the longitudinal direction.
  • the shape, number, size, and the like of the main body adhesive section 21 and the wing adhesive section 31 are not limited to those shown in FIG.
  • the absorbent body 10 is a member that absorbs liquid (excrement) such as menstrual blood and holds it inside, the absorbent core 12, and the upper layer sheet 11 on the skin side in the thickness direction from the absorbent core 12,
  • the lower layer sheet 13 is provided on the non-skin side in the thickness direction from the absorbent core 12.
  • the absorptive core 12 should just have a liquid absorptive fiber, and can contain what contains a superabsorbent polymer (what is called SAP) in liquid absorptive fibers, such as a pulp fiber.
  • SAP superabsorbent polymer
  • the upper layer sheet 11 is a liquid-permeable sheet and can be exemplified by tissue paper and the like.
  • the lower layer sheet 13 may be a liquid-permeable sheet or a liquid-impermeable sheet, and examples thereof include an SMS (spunbond / meltblown / spunbond) nonwoven fabric.
  • the absorbent core 12, the upper layer sheet 11, and the lower layer sheet 13 have the same planar shape and are laminated in the thickness direction.
  • Each of the members 11 to 13 may or may not be joined to each other by an adhesive.
  • the absorber 10 is formed to have a predetermined basis weight m10.
  • the basis weight is the mass per unit area, and the absorbent body 10 is formed so that the basis weight m10 is substantially uniform in almost the entire region.
  • the absorbent body 10 can easily maintain a planar shape, and when the napkin 1 is worn, the absorbent body 10 can be easily fitted to the wearer's body in a planar shape.
  • the size of the predetermined basis weight m10 in the absorbent body 10 of the present embodiment is about 100 to 500 (g / mm 2).
  • the basis weight of a part of the absorber 10 is lower than the predetermined basis weight m10.
  • a pair of front both-side low basis weights provided on both sides in the width direction of the absorbent body 10 on the front side in the longitudinal direction (the front side of the center in the longitudinal direction and the front side of the wing portion 30 in this embodiment).
  • the basis weight m16 in the pair of rear both-side low basis weight portions 16 shown by hatched portions in FIG.
  • a belt-like front belt-like low basis weight portion 17 (cross-shaped in FIG. 4) is provided between the pair of front both-side low basis weight portions 15 on the front side in the longitudinal direction and has a predetermined length in the longitudinal direction. (Shown by hatching) and a belt-like rear side having a predetermined length in the longitudinal direction, provided between the basis weight m17 and the width direction of the pair of rear side low basis weight portions 16 on the rear side in the longitudinal direction.
  • the basis weight m18 in the belt-like low basis weight portion 18 (shown by cross hatching in FIG. 4) is lower than the predetermined basis weight m10.
  • the basis weights m15 to m18 in the respective low basis weight portions 15 to 18 are all zero (g / mm 2). That is, the region corresponding to the low basis weight portions 15 to 18 of the absorbent body 10 is cut out.
  • the basis weights m15 to m18 of the low basis weight portions 15 to 18 are lower than the predetermined basis weight m10, it is not necessarily zero, and m15 to m18 may have different sizes. good.
  • a constricted portion 19 which is a portion in which the width of the absorber 10 is narrowed by forming both sides in the width direction inward in the width direction, is formed in a region on the rear side in the longitudinal direction from the wing portion 30. (See FIG. 1).
  • the width of the absorber 10 gradually decreases from the position of the front end 19lf in the longitudinal direction toward the outside (rear side) in the longitudinal direction, and the position of the absorber 10 at the position of 19lc in the longitudinal direction. The width is the narrowest.
  • the width W16 of the absorber 10 gradually decreases from the position of the rear end 19lr in the longitudinal direction toward the inside (front side) in the longitudinal direction, and the width of the absorber 10 decreases at the position of 19lc in the longitudinal direction.
  • the constricted portion 19 is a portion between 19lf and 19lr in the longitudinal direction and a portion where the width of the absorber 10 is narrowed.
  • the absorbent body 10 of the present embodiment is arranged in the width direction on the rear side in the longitudinal direction with respect to the rear side low basis weight portion 16 (that is, on the rear side with respect to the rear fold line F ⁇ b> 2 described later). It has the 1st constriction part 191 which is a part which the width
  • constricted portions 191 and 192 may be formed by notching both sides in the width direction of the absorbent body 10, and the constricted portions 191 and 192 are formed in the process of manufacturing the absorbent body 10.
  • the base material of the absorbent body 10 may be laminated. Further, it may be formed by other methods.
  • the napkin 1 is a portion that is recessed from the skin side in the thickness direction toward the non-skin side, and a plurality of compressed portions 40 (concave portions) having a higher density of liquid absorbent fibers than the adjacent portions are provided. (See FIG. 1).
  • the top sheet 3, the second sheet 4, and the whole area of the absorber 10 in the thickness direction are pressed (embossed) from the skin side in the thickness direction and joined and integrated. While these several pressing parts 40 adjoin at a narrow space
  • the pressing part 40 is provided only in the absorbent body 10, the pressing part 40 is provided only from the top sheet 3 to a part on the skin side in the thickness direction of the absorbent core 12, or the back sheet 5 Alternatively, the compressed portion 40 may be provided in the absorbent body 10. Moreover, the arrangement pattern of each pressing part 41 and 42 is not restricted to what is shown in FIG.
  • the basis weight of the liquid absorbent fiber is equal between the compressed portion 40 and the portion adjacent thereto, and that the density of the compressed portion 40 is increased by pressing the liquid absorbent fiber.
  • the cross section of the absorber 10 cut in the thickness direction is photographed with an electron microscope or the like, and the density difference of the fibers is visually compared between the pressing portion 40 and the adjacent portion, or the number of fibers in each portion is compared. Or better.
  • the pressing part 40 and the adjacent part are cut out from the absorbent body 10, and the basis weight (g / cm 2 ) is calculated by dividing the mass of each part by the area, and the basis weight is divided by the thickness.
  • the fiber density (g / cm 3 ) may be calculated and compared.
  • the napkin 1 of the present embodiment is folded in a tri-fold in the longitudinal direction at the front fold F1 and the rear fold F2 set at predetermined positions in the longitudinal direction in an individually packaged state when shipped to the market as a product. It is.
  • the front fold F1 is formed along the width direction on the front side in the longitudinal direction (the front side of the excretory opening contact region), and at least a part of the front low-side weight portions 15 in the longitudinal direction. It is placed in a position to be heavily applied.
  • the rear fold F2 is formed along the width direction on the rear side in the longitudinal direction (the rear side of the excretory opening contact region), and at least a part of the rear low-side weight parts 16 in the longitudinal direction. It is placed in a position to be heavily worn.
  • the number and position of the folds provided in the napkin 1 are not necessarily limited thereto.
  • a crease may be further provided on the rear side of the rear fold line F2.
  • the napkin 1 is mounted by pulling up the underwear in a state of being fixed to the skin side surface of the underwear (shorts) using the main body portion adhesive portion 21 and the wing portion adhesive portion 31 described above.
  • the absorber 10 of this embodiment has a basis weight smaller than the area
  • the absorber 10 since the basis weight of the front both-side low basis weight portion 15 is zero, the difference in rigidity between the front and rear low-basis weight portions 15 and the front and rear regions becomes larger, and the absorber 10 has a lower front side both sides. Natural bending at the position of the basis weight portion 15 is likely to occur. Similarly, the absorber 10 has a lower basis weight and lower rigidity than the front and rear regions at the position where the pair of rear both-side low basis weight portions 16 are provided. Therefore, the absorbent body 10 is easy to bend in the longitudinal direction with the back side low basis weight part 16 as a base point, and the rear side region in the longitudinal direction is easier to fit on the wearer's buttocks than the back side low basis weight part 16. It has become.
  • a front fold F ⁇ b> 1 is provided at a position overlapping the front both-side low basis weight portion 15 in the longitudinal direction of the absorbent body 10, and a rear fold F ⁇ b> 2 is provided at a position overlapping the rear both-side low basis weight portion 16. It has been. Since the absorbent body 10 is previously creased by the front folds F1 and the rear folds F2, bending base points are more formed at the positions of the front side low basis weight portions 15 and the rear side low basis weight portions 16 in the longitudinal direction. Easy to be. Therefore, even when the napkin 1 is used immediately after the individual packaging state is released, the front region and the rear region of the napkin 1 can be securely fitted to the wearer's abdomen and buttocks.
  • sanitary napkins such as the napkin 1 are generally required to be able to live daily life without causing stress or discomfort when worn by the wearer.
  • the fit may be deteriorated when the wearer moves the body. For example, when the wearer walks while wearing a sanitary napkin, the left and right greater gluteal muscles move up and down alternately at the buttocks (back side). At this time, if the rear region of the absorber continues to maintain a planar shape, three-dimensional deformation such as torsional deformation hardly occurs, and it is difficult for the absorber to sufficiently follow the movement of the buttocks. become.
  • the absorbent body 10 of the napkin 1 of the present embodiment is provided with the constricted portion 19 on the rear side of the second fold line F2 in the longitudinal direction (that is, on the rear side of the rear-side low basis weight portions 16). It has been. Since the width W19 (see FIG. 5) in the constricted portion 19 is shorter than the width in other regions of the absorbent body 10, the force (stress) that attempts to bend the absorbent body 10 in the longitudinal direction or the width direction when the napkin 1 is worn. When this occurs, stress concentration tends to occur in the constricted portion 19. Therefore, the absorber 10 is easily bent and deformed with the constricted portion 19 as a base point.
  • FIG. 5 is an enlarged plan view of the rear region in the longitudinal direction of the absorbent body 10.
  • the first constricted portion 191 when stress acts on the surface of the absorber 10, the first constricted portion 191 is directed from the outer edge (edge) portion of the absorber 10 toward the opposite side (inner side) in the width direction, and the rear side in the longitudinal direction. Bending toward the front side (rear side fold F2 side).
  • the direction of the bent line formed by the first constricted portion 191 is indicated by a broken line.
  • the rear region of the absorbent body 10 is bent at a bent line as shown by a broken line, and is deformed so as to be twisted diagonally, thereby fitting to the curved surface of the wearer's body (buttock). It becomes easy to follow the movement of the buttocks.
  • a similar bent line is formed in the second constricted portion 192 provided on the rear side in the longitudinal direction of the first constricted portion 191. That is, bending deformation occurs from the outer edge (edge) portion of the absorber 10 in the second constricted portion 192 toward the opposite side (inner side) in the width direction and from the rear side to the front side in the longitudinal direction. Since the absorber 10 bends and deforms stepwise with the first constricted portion 191 and the second constricted portion 192 as base points, it becomes easier to follow the complex movement of the buttocks, and the fit can be further improved. Further, since the plurality of constricted portions 19 are provided, the appearance of the rear side region of the absorbent body 10 becomes a cloud shape as shown in FIG. 5, the design is improved, and the user feels at ease and feels secure. Can give you an image.
  • the bending deformation of the absorbent body 10 is easily induced in a predetermined direction by the linear compressed portion 41.
  • derivation pressing part 411 which goes to the surface of the absorber 10 from the back side of a longitudinal direction to the front side and goes to the inside from the outer side of the width direction is provided.
  • derivation pressing part 411 has overlapped with the bending line (it shows with the broken line in FIG. 5) which made the 1st neck part 191 the origin.
  • derivation pressing part 412 which goes to the area
  • the 1st bending induction pressing part 411 is arrange
  • the extension line obtained by extending the first bending induction squeezing part 411 to the outside in the width direction is the front end 191lf in the longitudinal direction of the first constricted part 191 among the outer edges (outer edges) of the absorbent body 10 in the width direction.
  • derivation pressing part 411 is arrange
  • the extension line of the first bending induction squeezing part 411 is the position where the width W19 is the narrowest of the outer edges of the first constricted part 191 of the absorbent body 10 (the position corresponding to 19lc in FIG. 4).
  • the 1st bending induction pressing part 411 is arrange
  • the first bending induction squeezing portion 41 (and its extension line) is a region in which the width W19 is narrowed by recessing inward on both sides in the width direction of the outer edge of the absorbent body 10 (FIG. 4).
  • the region corresponding to the region between 19lf and 19lr) may be arranged so as to intersect. If it is such arrangement
  • derivation pressing part 412 is arrange
  • the angle (namely, the inclination of the bending induction pressing part 411, 412 with respect to the width direction) which the 1st bending induction pressing part 411 and the 2nd bending induction pressing part 412 make with the width direction is different, respectively.
  • the first bending induction squeezing part 411 and the second bending induction squeezing part 412 are not parallel to each other, and the inclination of the bending induction squeezing parts 411 and 412 is different, whereby the rear region of the absorbent body 10 is bent.
  • the deformation angle (twist angle) is likely to change stepwise. Thereby, it becomes easy to fit the absorber 10 with a complicated curved surface, and it becomes easy to follow the movement of the buttocks.
  • the respective bending induction squeezing parts 411 and 412 are arranged so that the intersection of the extension line of the first bending induction pressing part 411 and the extension line of the second bending induction pressing part 412 does not overlap with the absorbent body 10. ing. If the extension lines of the two intersect each other at a position overlapping with the absorbent body 10, the bent line guided to the first bending induction squeezing part 411, the bending line induced to the second bending induction pressing part 412, and Will cross at a certain position on the absorber 10. In this case, since the portion where the two bent lines intersect is intensively bent, the absorbent body 10 is likely to be bent, and the fit property may be deteriorated or the liquid absorbability may be lowered.
  • the intersection of the extension line of the first bending induction squeezing part 411 and the extension line of the second bending induction squeezing part 412 is not formed at a position overlapping with the absorbent body 10. Such problems can be prevented from occurring.
  • the smaller angle ⁇ 19f of the angle formed between the tangent to the outer edge of the absorbent body 10 in the front side region in the longitudinal direction of the constricted portion 19 (the region between 19lf and 19lc in FIG. 4) and the width direction is
  • the smaller angle ⁇ 19r of the angle formed between the tangent to the outer edge of the absorber 10 and the width direction in the rear side region in the longitudinal direction of the portion 19 (the region between 19lr and 191c in FIG. 4) is different. ( ⁇ 19f ⁇ ⁇ 19r).
  • the width W19 of the absorber 10 is different between the front region and the rear region in the longitudinal direction in the constricted portion 19, a difference in rigidity occurs in the absorber 10, and the absorber 10 is easily bent and deformed. That is, it becomes easy to control the bending deformation of the absorber 10 by adjusting the shape of the constricted portion 19.
  • the angle ⁇ 191f in the front region of the first constricted portion 191 is smaller than the angle ⁇ 191r in the rear region of the first constricted portion 191 ( ⁇ 191f ⁇ 191r).
  • the absorbent body 10 is greatly recessed in the rear region in the longitudinal direction than in the front region.
  • the bending deformation based on the constricted portion 19 is easily guided from the rear side to the front side in the longitudinal direction and from the outer side to the inner side in the width direction, and the bent line joins the first bending induction pressing unit 411. It becomes easy to let you. In this way, by controlling the bending deformation, it is possible to suppress the occurrence of excessive wrinkles and kinks in the absorbent body 10 and to further improve the fit at the time of wearing.
  • the minimum value of the width W19 of the absorbent body 10 in the constricted portion 19 is smaller than the minimum value of the width W16 of the absorbent body 10 in the portion where the rear both-side low basis weight portions 16 are provided. That is, the size of the portion of the constricted portion 19 in which both sides in the width direction of the absorbent body 10 are recessed inward in the width direction is the same as that in the rear side low basis weight portion 16. It is smaller than the size of the protruding part. With such a configuration, it is possible to more easily cause bending deformation in the longitudinal direction of the absorbent body 10 in the rear both-side low basis weight portion 16.
  • the absorbent body 10 is suppressed from being excessively recessed (notched) in the constricted portion 19 and the area can be increased, the wearer's buttocks are widely covered by the rear region of the absorbent body 10. It becomes easy, and it becomes possible to ensure sufficient liquid absorption performance (absorption capacity) in the field concerned.
  • region of the longitudinal direction rear side of the absorber 10 is divided
  • segmented into the width direction because the position of the back both sides low basic weight part 16 used as the base of bending deformation of the absorber 10 and the back strip
  • the absorber 10 is unlikely to be bent and deformed.
  • the absorber 10 is easily bent in the longitudinal direction in a region where the rear belt-shaped low basis weight portion 18 and the rear side low basis weight portions 16 overlap. That is, the regions on both sides of the rear belt-shaped low basis weight portion 18 are each easily bent and easily deformed.
  • the regions of the absorbent body 10 that are divided in the width direction by the rear belt-shaped low basis weight portion 18 individually operate following the movement of the left and right greater calf muscles of the wearer. It becomes possible to do. Therefore, it is suppressed that the absorber 10 touches or leaves the skin in the wearer's buttocks, and it is easy to maintain a state of being fitted to the left and right sides of the buttocks, thereby improving fit. Further, in the rear region of the absorbent body 10, bending deformation (torsional deformation) generated with the constricted portion 19 as a base point occurs independently on the left and right sides. Therefore, even when the wearer walks or the like, the absorbent body 10. Will be easier to fit in the buttocks.
  • belt-shaped low basic weight part 18 is zero. That is, since each area
  • the absorbent body 10 of the present embodiment does not have a constriction corresponding to the constricted portion 19 in the front region in the longitudinal direction (that is, the region on the front side in the longitudinal direction from the front fold F1 and the rear fold F2). .
  • the front region in the longitudinal direction of the absorbent body 10 is a portion that comes into contact with the wearer's abdomen when the napkin 1 is worn.
  • the abdomen has a wider plane portion than the buttocks and does not perform different exercises on the left and right, so the possibility that the followability of the absorbent body 10 will be a problem is low. That is, in the front region of the absorbent body 10, it is less necessary to perform torsional deformation as in the rear region.
  • a constricted portion is not provided in the front region of the absorbent body 10. Since the constricted portion is not provided, it is possible to secure a large area of the front region, and accordingly, the liquid absorption capacity in the front region is increased to effectively suppress urine leakage and the like. Be able to.
  • the absorbent core 12 is covered with the two sheets of the upper layer sheet 11 and the lower layer sheet 13, but the present invention is not limited to this.
  • the skin side and the non-skin side of the absorbent core 12 may be covered so as to be wrapped with a single sheet.
  • the wing portion 30 is formed by the side sheet 2 different from the top sheet 3, but the present invention is not limited to this.
  • the wing part 30 may be formed by the top sheet 3 (and the back sheet 5) extending outward in the width direction in the region of the central part in the longitudinal direction.

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 article absorbant ayant des directions de largeur et longitudinales réciproquement orthogonales et qui comprend : un corps absorbant (10) ayant une capacité d'absorption de fluide ; et une pluralité de plis disposés dans le sens de la largeur et ayant des espaces entre eux dans la direction longitudinale. Le corps absorbant (10) a des parties rétrécies (19) dont les deux côtés dans le sens de la largeur sont en retrait vers l'intérieur dans le sens de la largeur, dans une zone sur le côté arrière, dans la direction longitudinale, d'une zone de contact d'orifice d'excrétion, un orifice d'excrétion d'un utilisateur venant en contact avec celui-ci et plus loin vers le côté arrière qu'un pli côté arrière (F2), parmi la pluralité de plis, disposé au niveau de la position la plus proche de la zone de contact d'orifice d'excrétion.
PCT/JP2018/001026 2017-01-31 2018-01-16 Article absorbant WO2018142920A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017-016108 2017-01-31
JP2017016108A JP6924034B2 (ja) 2017-01-31 2017-01-31 吸収性物品

Publications (1)

Publication Number Publication Date
WO2018142920A1 true WO2018142920A1 (fr) 2018-08-09

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JP (1) JP6924034B2 (fr)
TW (1) TWM565554U (fr)
WO (1) WO2018142920A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020162385A1 (fr) * 2019-02-04 2020-08-13 ユニ・チャーム株式会社 Article absorbant
JP2020185319A (ja) * 2019-05-17 2020-11-19 ユニ・チャーム株式会社 吸収性物品

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7508214B2 (ja) 2019-11-06 2024-07-01 花王株式会社 吸収性物品

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006271898A (ja) * 2005-03-30 2006-10-12 Daio Paper Corp 吸収性物品
JP2008093289A (ja) * 2006-10-13 2008-04-24 Kao Corp 吸収性物品
WO2008072675A1 (fr) * 2006-12-13 2008-06-19 Uni-Charm Corporation Article absorbant
JP2010022539A (ja) * 2008-07-17 2010-02-04 Uni Charm Corp 吸収性物品

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006271898A (ja) * 2005-03-30 2006-10-12 Daio Paper Corp 吸収性物品
JP2008093289A (ja) * 2006-10-13 2008-04-24 Kao Corp 吸収性物品
WO2008072675A1 (fr) * 2006-12-13 2008-06-19 Uni-Charm Corporation Article absorbant
JP2010022539A (ja) * 2008-07-17 2010-02-04 Uni Charm Corp 吸収性物品

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020162385A1 (fr) * 2019-02-04 2020-08-13 ユニ・チャーム株式会社 Article absorbant
JP2020124314A (ja) * 2019-02-04 2020-08-20 ユニ・チャーム株式会社 吸収性物品
JP7083763B2 (ja) 2019-02-04 2022-06-13 ユニ・チャーム株式会社 吸収性物品
JP2020185319A (ja) * 2019-05-17 2020-11-19 ユニ・チャーム株式会社 吸収性物品
WO2020235119A1 (fr) * 2019-05-17 2020-11-26 ユニ・チャーム株式会社 Article absorbant

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JP2018121864A (ja) 2018-08-09
JP6924034B2 (ja) 2021-08-25
TWM565554U (zh) 2018-08-21

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