WO2018142921A1 - Article absorbant - Google Patents

Article absorbant Download PDF

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Publication number
WO2018142921A1
WO2018142921A1 PCT/JP2018/001032 JP2018001032W WO2018142921A1 WO 2018142921 A1 WO2018142921 A1 WO 2018142921A1 JP 2018001032 W JP2018001032 W JP 2018001032W WO 2018142921 A1 WO2018142921 A1 WO 2018142921A1
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WO
WIPO (PCT)
Prior art keywords
basis weight
longitudinal direction
absorbent article
low
width direction
Prior art date
Application number
PCT/JP2018/001032
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 WO2018142921A1 publication Critical patent/WO2018142921A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—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.
  • Patent Document 1 discloses an example of a configuration in which the absorber is divided by a plurality of slits on the rear side in the longitudinal direction. However, the configuration is intended to deform the absorber at the time of wearing.
  • the present invention has been made in view of the above-described problems, and the object of the present invention is to provide an absorption capable of realizing a good fit even when the wearer exercises while wearing the wearer. It is to provide a sex article.
  • a main invention for achieving the above object is an absorbent article having an absorbent body having a longitudinal direction and a width direction orthogonal to each other and having a predetermined basis weight, wherein the absorbent body is the longitudinal direction.
  • a pair of both side low basis weight portions provided on both sides in the width direction on the rear side and having a basis weight lower than the predetermined basis weight; and the pair in the width direction on the rear side in the longitudinal direction.
  • a belt-like belt-like low basis weight part having a predetermined length in the longitudinal direction and having a basis weight lower than the predetermined basis weight.
  • the band-shaped low basis weight part is an absorbent article characterized in that it overlaps at least a part of the pair of both side low basis weight parts in the longitudinal direction.
  • 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.
  • An absorbent article having an absorbent body having a longitudinal direction and a width direction orthogonal to each other and having a predetermined basis weight, wherein the absorbent body is provided on both sides in the width direction on the rear side in the longitudinal direction.
  • the basis weight being lower than the predetermined basis weight.
  • the belt-shaped low basis weight portion having a predetermined length in the longitudinal direction and having a basis weight lower than the predetermined basis weight, and the belt-shaped low basis weight portion is the longitudinal direction
  • 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
  • one strip-shaped low basis weight portion along the longitudinal direction is provided at the center in the width direction.
  • the region on the rear side in the longitudinal direction of the absorbent body is divided into left and right parts centered on the belt-like low basis weight portion, and the divided regions on the left and right correspond to the left and right collars, respectively. It is easy to deform efficiently. Therefore, good fit can be realized even when the wearer moves his / her body when the absorbent article is worn.
  • a plurality of the strip-shaped low basis weight portions are provided from the front side in the longitudinal direction to the outside and from the center side in the width direction to the outside.
  • each region divided in the width direction by the plurality of belt-shaped low basis weight portions is independently deformed, thereby covering a wide range of the buttocks and firmly moving the buttocks.
  • follow-up can improve fit.
  • region comes to bend also in a diagonal direction along a radial strip
  • the basis weight of the absorbent body in the pair of both side low basis weight portions is zero.
  • the absorbent body since the difference in rigidity between the region where the low-basis-weight portions are provided on both sides and the region before and after the region increases, the absorbent body is longitudinal in the position of the low-basis-weight portions on both sides. It is easy to bend and deform. Thereby, an absorber becomes easy to fit along a wearer's body shape.
  • 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 non-skin side of the absorbent article, and the regions on both sides in the width direction of the belt-shaped low basis weight part are provided with adhesive portions coated with an adhesive, It is desirable.
  • a plurality of folds for folding the absorbent article in the longitudinal direction are provided along the width direction, and at least one of the plurality of folds is In the longitudinal direction, the absorbent article is overlapped with at least a part of the pair of low side weight portions on both sides. It is desirable.
  • the crease is preliminarily attached to the absorbent body by the crease, the bent base point is more easily formed at the positions of the low basis weight portions on both sides in the longitudinal direction. Therefore, it becomes easy to make the longitudinal direction rear side area
  • the absorbent body is provided on both sides in the width direction on the front side in the longitudinal direction from the position where the both side low basis weight portions are disposed, and the basis weight is the predetermined basis weight.
  • a pair of front side low basis weight parts that are lower than the amount, and extend to both outer sides in the width direction between the both side low basis weight parts and the front side low basis weight parts in the longitudinal direction. It is desirable to have a wing portion.
  • the absorbent body in a state where the longitudinal center portion of the absorbent body is firmly fixed to the crotch portion of the underwear by the wing portion, the absorbent body is in the longitudinal direction at the low basis weight portions on both sides before and after the wing portion. It bends back and forth and becomes deformed.
  • the longitudinal direction front side part of an absorber becomes easy to be correctly arranged on a wearer's abdomen, and a longitudinal direction rear side part is correctly arranged on a wearer's back part (buttock), and fit nature at the time of wearing improves.
  • the smaller one of the angles formed by the tangent to the boundary on the front side in the longitudinal direction of the both side low basis weight parts and the width direction, and the longitudinal direction of the both side low basis weight parts It is desirable that the smaller one of the angles formed by the tangent to the boundary on the rear side and the width direction has a different size.
  • the smaller one of the angles formed by the tangent to the boundary in the longitudinal direction of the both side low basis weight portions and the width direction is the longitudinal direction of the both side low basis weight portions. It is desirable that the angle is larger than the smaller one of the angles formed by the boundary tangent on the rear side and the width direction.
  • the absorbent body by increasing the angle on the front side in the longitudinal direction, the absorbent body can be easily bent obliquely along the tangent line of the front boundary. Thereby, an absorber can be made to make it easier to fit with respect to the curved surface of a complicated body.
  • the angle on the rear side in the longitudinal direction by reducing the angle on the rear side in the longitudinal direction, the area of the constricted portion is reduced, and the area of the rear region of the absorber is relatively widened. Thereby, a wearer's buttocks are easy to be covered widely and it becomes easy to control that excrement leaks in a buttocks area.
  • Such an absorbent article has a top sheet laminated on the skin side of the absorbent body, and the absorbent body is formed on both sides of the strip-shaped low basis weight portion along the boundary of the strip-shaped low basis weight portion. And it is desirable for a pair of linear pressing parts which join the said top sheet to be provided.
  • the pair of linear compressed portions do not overlap with the pair of low side weight portions on both sides in the longitudinal direction.
  • an absorbent article by preventing the highly linear compressed portion from overlapping with the low side weight portion on both sides in the longitudinal direction, absorption is performed at the position of the low side weight portion on both sides that becomes the base point of bending. It is possible to prevent the bending deformation in the longitudinal direction of the body from being hindered. Thereby, an absorber becomes easy to bend and deform
  • the absorbent body is provided on both sides in the width direction on the front side in the longitudinal direction from the position where the both side low basis weight portions are disposed, and the basis weight is the predetermined basis weight.
  • Each having a pair of front side low basis weight portions that are lower than the amount, each of the pair of linear compressed portions has a plurality of adjacent compressed portions, and each of which constitutes the pair of linear compressed portions
  • 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. Examples of the adhesive application pattern include an ⁇ pattern, a spiral pattern, and a stripe pattern.
  • the napkin 1 includes a napkin main body portion 20 provided with the absorbent body 10 and a pair of wing portions 30 extending from the longitudinal central region of the napkin main body portion 20 to both outer sides in the width direction.
  • 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.
  • the napkin 1 is a portion that is recessed from the skin side in the thickness direction toward the non-skin side, and is provided with a plurality of compressed portions 40 (concave portions) having a higher density of liquid absorbent fibers than adjacent portions. ing.
  • 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 tri-folded in the longitudinal direction at the first fold line F1 and the second fold line F2 set at predetermined positions in the longitudinal direction in an individually packaged state when shipped to the market as a product.
  • the first fold line F ⁇ b> 1 is formed along the width direction on the front side in the longitudinal direction (front side of the wing part 30).
  • the first fold line F1 is formed at a position that overlaps at least a part of the front side low basis weight portion 15 in the longitudinal direction.
  • the second fold line F2 is formed along the width direction on the rear side in the longitudinal direction (the rear side of the wing portion 30).
  • the second fold line F2 is formed at a position that overlaps at least a part of the rear side low basis weight portion 16 in the longitudinal direction.
  • 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 first 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
  • a second fold F ⁇ b> 2 is provided at a position overlapping the rear both-side low basis weight portion 16.
  • the crease is attached to the absorbent body 10 in advance by the first fold line F1 and the second fold line F2
  • the bending base point is more at the positions of the front low-side weight part 15 and the rear low-side weight part 16 in the longitudinal direction. Easy to form. 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 absorbent articles
  • 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 the planar shape as a whole, it becomes difficult for the absorber to sufficiently follow the movement of the buttocks.
  • one side (for example, the right side) is fitted to the buttocks with respect to the movement of the left and right great gluteal muscles, but the other side (for example, the left side) is separated from the buttocks. That is, it is repeated that an absorber touches and leaves
  • the region on the rear side in the longitudinal direction of the absorbent body 10 is divided in the width direction by the rear strip-shaped low basis weight portion 18.
  • 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 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.
  • belt-shaped low basic weight part 18 is arrange
  • belt-shaped low basic weight part 18 is zero. That is, since each area
  • the absorbent body 10 is divided in the width direction in the low basis weight part. An effect of individually deforming the two divided areas can be obtained.
  • a rear main body adhesive portion 21r is provided on each non-skin side surface (non-skin side surface of the back sheet 5) of the region divided in the width direction by the rear belt-shaped low basis weight portion 18 (FIG. 2). reference). That is, the rear main body adhesive portions 21r and 21r are provided on both sides in the width direction of the rear belt-shaped low basis weight portion 18, respectively. As described above, when the napkin 1 is worn, the absorbent body 10 (napkin main body portion 20) is fixed (attached) to the underwear by the rear main body adhesive portion 21r.
  • each of the regions of the absorbent body 10 divided in the width direction by the rear belt-shaped low basis weight portion 18 is fixed to the underwear, so that each region is easily deformed with the underwear according to the movement of the buttocks.
  • misalignment is less likely to occur. Thereby, it can suppress that the foreign material feeling and discomfort between skin (an buttock) and underwear arise at the time of wear.
  • the rear both-side low basis weight portion 16 of the present embodiment is formed by cutting out both end portions in the width direction of the absorbent body 10 into a substantially triangular shape. That is, the absorbent body 10 has a small length (width) in the width direction at the portion of the rear side low basis weight portion 16. Specifically, the width of the absorbent body 10 gradually decreases from the position of 16lf in the longitudinal direction toward the outside (rear side) in the longitudinal direction in FIG. 4, and the width W16 is the largest at the position of 16lc in the longitudinal direction. Narrow. Similarly, in FIG.
  • the width W16 gradually decreases from the position of 16lr in the longitudinal direction toward the inner side (front side) in the longitudinal direction, and the width W16 becomes the narrowest at the position of 16lc in the longitudinal direction.
  • the back both sides low basic weight part 16 is formed between 16lf and 16lr in a longitudinal direction, and the absorber 10 has the shape constricted in the width direction in the said area
  • the wearer's buttocks have a rounded shape
  • the rear region of the absorbent body 10 the region on the rear side in the longitudinal direction from the rear low-side weight portions 16.
  • the absorber 10 is easy to bend
  • FIG. 5 is an enlarged plan view of the rear region in the longitudinal direction of the absorbent body 10.
  • a tangent line (a broken line in FIG. 5) of a boundary 16e (16ef) between a region having a predetermined basis weight m10 and a region having a basis weight m16 lower than m10 (that is, the lower both sides low basis weight portion 16).
  • the rear region of the absorber 10 bends diagonally along the Therefore, the rear region of the absorbent body 10 is bent so as to be twisted in the oblique direction with the tangent line of the boundary 16e as the base point while being bent in the longitudinal direction from the position of the rear low-side weight portion 16 as the base point. Thereby, it becomes easier to fit the rear side region of the absorber 10 along the aspect of the buttocks.
  • the longitudinal front side region (region between 16 lc and 16 lf) is defined as the front boundary 16 ef and the longitudinal rear side region (16 lc and 16 lr). Is the smaller of the angles formed by the tangent of the front boundary 16ef and the width direction, and the smaller of the angles formed by the tangent of the rear boundary 16er and the width direction.
  • the angle ⁇ er is different in size. That is, the back side low basis weight part 16 has a different angle of constriction between the front side and the rear side in the longitudinal direction.
  • the angle ⁇ ef on the front side in the longitudinal direction is larger than the angle ⁇ er on the rear side ( ⁇ ef> ⁇ er).
  • the front angle ⁇ ef By increasing the front angle ⁇ ef, the inclination angle of the front boundary 16ef with respect to the width direction of the tangent increases, and the amount of twist when the rear region of the absorber 10 bends obliquely along the tangent increases. Therefore, the absorber 10 can be more easily fitted to a complicated curved surface of the body.
  • the rear angle ⁇ er by reducing the rear angle ⁇ er, the area of the portion where the rear region of the absorbent body 10 is constricted (notched) by the rear both-side low basis weight portions 16 is reduced.
  • the area of the rear region of the absorber 10 becomes relatively large. Thereby, when the napkin 1 is mounted. The wearer's buttocks are easily covered with the rear region of the absorbent body 10, and it is easy to suppress excrement from leaking in the buttocks region.
  • the front angle ⁇ ef may be smaller than the rear angle ⁇ er. In this case, the area of the constricted portion in the central region (region corresponding to the crotch when worn) of the absorber 10 is reduced, and the area of the absorber 10 can be increased in the central region. Thereby, absorptivity of excretion fluid etc. in a crotch region can be improved.
  • the function of the absorber 10 is optimally adjusted according to the use conditions of the napkin 1 and the difference of the wearer by changing the shape (angle of the boundary 16e) of the rear low-side weight portions 16. It becomes possible.
  • a pair of linear pressing parts 41 along the boundary 18e of the rear belt-like low basis weight portion 18 are provided on both sides in the width direction of the rear belt-like low basis weight portion 18.
  • a pair of linear pressing parts 41re and 41re extending in the longitudinal direction are provided on both sides in the width direction of the rear belt-shaped low basis weight part 18.
  • the delamination which the absorber 10 and the top sheet 3 which were piled up in the thickness direction, and the 2nd sheet
  • the rear belt-like low basis weight portion 18 when the basis weight of the rear belt-like low basis weight portion 18 is zero and the belt-like notch is formed in the absorbent body 10 as in the present embodiment, the rear belt-like low basis weight portion 18 (the cut Delamination tends to occur near the boundary 18e (edge).
  • region, the top sheet 3, etc. strengthening the bonding in the thickness direction to make delamination difficult.
  • the state where the linear pressing portions 41re and 41re are “provided along the boundary 18e of the rear strip-shaped low basis weight portion 18” means that the linear pressing portions 41re and 41re are the boundaries of the rear strip-shaped low basis weight portion 18. It means that it is provided within a predetermined distance from 18e.
  • Linear squeezed portions 41re and 41re are provided at positions where the distance is about 3 mm to 5 mm.
  • a pair of linear pressing parts 41re and 41re are arrange
  • the absorber 10 and the top sheet 3 etc. are integrally joined in the linear pressing parts 41re and 41re, the density and rigidity in the part are locally high.
  • the longitudinal direction of the absorber 10 in the position of the back both sides low basic weight part 16 There is a possibility that the bending deformation of the material will be hindered.
  • the napkin 1 of this embodiment it suppresses that a deformation
  • the linear pressing parts 41re and 41re are formed when a plurality of pressing parts 40 are arranged adjacent to each other at a predetermined interval.
  • region of the back side of a longitudinal direction rather than the back both sides low basic weight part 16 is back in a longitudinal direction. It is smaller than the area S40c of each pressing part 40 which comprises the linear pressing part 41 arrange
  • each pressing part 40 which comprises the linear pressing parts 41re and 41re is made as small as possible, it is suppressed that the rigidity of the area
  • the length (width) W18 in the width direction of the rear belt-like low basis weight portion 18 is larger than the thickness t10 of the absorber 10 (W18> t10). If the width W18 of the rear strip-shaped low basis weight portion 18 is smaller than the thickness t10 of the absorbent body 10, the regions divided by the rear strip-shaped low basis weight portion 18 on the left and right in the width direction move independently. The possibility that the divided areas contact or interfere with each other at the edge portion of the rear belt-shaped low basis weight portion 18 increases. On the other hand, by making the width W18 of the rear belt-shaped low basis weight portion 18 larger than the thickness t10 of the absorber 10, interference or the like at the edge portion can be made difficult to occur.
  • the “thickness” of the absorber 10 is a dial thickness gauge ID-C1012C manufactured by Mitutoyo Corporation or equivalent, and the contact area is set to 20 cm 2 and the contact pressure is set to 3 gf / cm 2. This is the value when measuring.
  • one rear belt-shaped low basis weight portion 18 is disposed along the longitudinal direction in the center portion in the width direction of the absorbent body 10. Not as long.
  • a plurality of rear strip-shaped low basis weight portions 18 may be arranged radially like the front strip-shaped low basis weight portion 17 shown in FIG. That is, a plurality of (for example, two) rear belt-shaped low basis weight portions 18 may be arranged on the outer side in the longitudinal direction (rear side) and on both outer sides in the width direction.
  • each of the rear belt-shaped low basis weight portions 18 has a predetermined length in the longitudinal direction and overlaps with the rear both side low basis weight portions 16 in the longitudinal direction, a plurality Each region divided in the width direction by the rear belt-like low basis weight portion 18 can be bent and deformed independently with the position of the rear both-side low basis weight portion 16 as a base point.
  • the plurality of rear strip-shaped low basis weight portions 18 in a radial manner, for example, when the area of the rear side region of the absorbent body 10 is increased, it is easy to improve the fit property at the buttocks.
  • Each region divided in the width direction by the plurality of rear belt-shaped low basis weight portions 18 can be independently deformed, so that the wide range of the buttocks can be covered while closely following the movement of the buttocks to achieve fit. This is because it can be improved.
  • the plurality of rear belt-shaped low basis weight portions 18 radially, it is possible to realize three-dimensional bending deformation according to the shape of the collar portion.
  • the region divided by the rear strip-shaped low basis weight portion 18 is easily bent in the longitudinal direction and the width direction along the radial rear strip-shaped low basis weight portion 18, and thus the above-described twist-like effect occurs.
  • the absorber 10 is easily deformed in accordance with the roundness of the buttocks.
  • 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

Article absorbant (1) présentant une direction longitudinale et une direction de largeur mutuellement orthogonales et comprenant un corps absorbant (10) présentant un grammage prescrit. Le corps absorbant (10) comprend : une paire de parties latérales de faible grammage (16) disposées sur les deux côtés dans la direction de la largeur, sur le côté arrière dans la direction longitudinale, et présentant un grammage inférieur au grammage prescrit ; et une partie en forme de bande de faible grammage (18), disposée entre la paire de parties latérales de faible grammage, dans la direction de la largeur, dans le côté arrière dans la direction longitudinale, et présentant une longueur prescrite dans la direction longitudinale et un grammage inférieur au grammage prescrit. La partie en forme de bande de faible grammage (18) chevauche au moins une partie de la paire de parties latérales de faible grammage (16) sur les deux côtés dans la direction longitudinale.
PCT/JP2018/001032 2017-01-31 2018-01-16 Article absorbant WO2018142921A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017-016106 2017-01-31
JP2017016106A JP6969874B2 (ja) 2017-01-31 2017-01-31 生理用ナプキン

Publications (1)

Publication Number Publication Date
WO2018142921A1 true WO2018142921A1 (fr) 2018-08-09

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ID=63039550

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Application Number Title Priority Date Filing Date
PCT/JP2018/001032 WO2018142921A1 (fr) 2017-01-31 2018-01-16 Article absorbant

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Country Link
JP (1) JP6969874B2 (fr)
TW (1) TWM565014U (fr)
WO (1) WO2018142921A1 (fr)

Citations (7)

* 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
WO2008069279A1 (fr) * 2006-12-07 2008-06-12 Uni-Charm Corporation Article absorbant
WO2008072675A1 (fr) * 2006-12-13 2008-06-19 Uni-Charm Corporation Article absorbant
JP2009501052A (ja) * 2005-07-13 2009-01-15 エスセーアー・ハイジーン・プロダクツ・アーベー 適合性が改善された吸収用品
JP2013135958A (ja) * 2013-04-08 2013-07-11 Daio Paper Corp 吸収性物品
JP2014014726A (ja) * 2013-10-31 2014-01-30 Uni Charm Corp 使い捨て着用物品
WO2016104146A1 (fr) * 2014-12-24 2016-06-30 ユニ・チャーム株式会社 Article absorbant

Patent Citations (7)

* 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
JP2009501052A (ja) * 2005-07-13 2009-01-15 エスセーアー・ハイジーン・プロダクツ・アーベー 適合性が改善された吸収用品
WO2008069279A1 (fr) * 2006-12-07 2008-06-12 Uni-Charm Corporation Article absorbant
WO2008072675A1 (fr) * 2006-12-13 2008-06-19 Uni-Charm Corporation Article absorbant
JP2013135958A (ja) * 2013-04-08 2013-07-11 Daio Paper Corp 吸収性物品
JP2014014726A (ja) * 2013-10-31 2014-01-30 Uni Charm Corp 使い捨て着用物品
WO2016104146A1 (fr) * 2014-12-24 2016-06-30 ユニ・チャーム株式会社 Article absorbant

Also Published As

Publication number Publication date
TWM565014U (zh) 2018-08-11
JP6969874B2 (ja) 2021-11-24
JP2018121862A (ja) 2018-08-09

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