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WO2017187667A1 - Article absorbant - Google Patents

Article absorbant Download PDF

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Publication number
WO2017187667A1
WO2017187667A1 PCT/JP2017/000470 JP2017000470W WO2017187667A1 WO 2017187667 A1 WO2017187667 A1 WO 2017187667A1 JP 2017000470 W JP2017000470 W JP 2017000470W WO 2017187667 A1 WO2017187667 A1 WO 2017187667A1
Authority
WO
WIPO (PCT)
Prior art keywords
region
absorbent article
slit portion
sheet
wearer
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2017/000470
Other languages
English (en)
Japanese (ja)
Inventor
貴志 野本
久孝 七海
ひかり 川上
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Unicharm Corp
Original Assignee
Unicharm Corp
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 Unicharm Corp filed Critical Unicharm Corp
Priority to CN201780023904.8A priority Critical patent/CN109069325B/zh
Publication of WO2017187667A1 publication Critical patent/WO2017187667A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers of the pads
    • A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
    • 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

Definitions

  • the present invention relates to absorbent articles such as sanitary napkins, panty liners, and incontinence pads.
  • Absorbent articles such as sanitary napkins, panty liners, and incontinence pads are worn while in contact with the wearer's crotch, so that the wearer does not feel uncomfortable, uncomfortable, liquid leakage, etc.
  • Absorbent articles that are easily deformed following the wearer's body shape that is, excellent in fit have been studied.
  • Patent Literature 1 discloses an absorbent article including a vertically long absorbent body interposed between a top sheet and a back sheet, and the absorbent body includes at least an upper layer and a lower layer.
  • Each of the upper layer and the lower layer has a plurality of cuts in portions located on both sides in the longitudinal direction of the absorber, and the cuts in the upper layer and the cuts in the lower layer
  • the said absorbent article formed in the position which does not overlap in the said longitudinal direction is disclosed.
  • the absorbent article disclosed in Patent Document 1 is formed in the absorbent body surrounded by the top sheet and the back sheet, the slit that expresses elasticity is formed by the wearer of the absorbent article before wearing.
  • the absorbent article is a product having excellent stretchability, and sometimes the wearer stretches the absorbent article in the longitudinal direction before wearing the absorbent article to increase its stretchability. There was a case to confirm.
  • the present invention is expected to be a high-quality absorbent article that is particularly excellent in stretchability (that is, excellent in wearing feeling) without having to stretch the absorbent article before wearing the absorbent article. It is an object of the present invention to provide an absorbent article that can give a feeling of wear to the wearer and can exhibit an excellent wearing feeling and high absorption performance when the absorbent article is worn.
  • the absorbent article which concerns on 1 aspect (aspect 1) of this invention was equipped with the surface sheet which forms the skin opposing surface of an absorbent article, and the absorber located in the non-skin opposing surface side of this surface sheet,
  • the longitudinal direction An absorbent article having a direction, a width direction, and a thickness direction, wherein the absorbent article is a front region located on a wearer's front side when the absorbent article is worn in the longitudinal direction in a plan view.
  • the absorbent article is provided with a stretchable sheet that is located on the non-skin facing surface side of the absorbent body and has stretchability in at least the longitudinal direction in the rear region, and the topsheet is Light transmittance at least in the rear region 45% or more, and the absorber has a slit portion existence region in which a plurality of slit portions extending in the width direction are present in the rear side region overlapping with the stretchable sheet in the thickness direction in plan view.
  • the slit part existing area equally divides the slit part existing area into three in the longitudinal direction.
  • the first existence region includes a wide slit portion that is wider in the longitudinal direction than the slit portion in the central existence region.
  • the absorbent article of the first aspect has a light transmittance of 45% or more in at least the rear side area of the top sheet, and the first existence area (that is, wearing of the absorbent article) in the slit part existence area of the absorber.
  • the region adjacent to the excretion port corresponding region that the user tends to pay attention to before wearing) includes the wide slit portion, so that the wearer approaches the excretion port corresponding region before wearing the absorbent article.
  • a wide slit portion in one existing region (more specifically, an opening portion of the wide slit portion or a stretchable sheet disposed on the non-skin facing surface side of the absorbent body through the opening portion), and its peripheral portion Due to the color difference (difference in lightness, color, etc.), it is easy to recognize through the surface sheet.
  • the absorbent article of this embodiment does not extend, the absorbent article of this embodiment has a plurality of slit portions, so that it is particularly excellent in stretchability (that is, excellent in wearing feeling). The expectation that it is an absorbent article can be nurtured by the wearer before wearing.
  • the absorbent article of this aspect comprises a stretchable sheet having stretchability in at least the longitudinal direction and a slit portion existing region in the absorbent body in a rear side region that is a region corresponding to the wearer's buttocks when worn.
  • the rear region of the absorbent article is configured to be easily deformed in a curved direction along the longitudinal direction and to be deformed in a direction twisted around the longitudinal direction
  • the absorbent article according to this aspect includes the above-described stretchable sheet in the rear side region, the effect achieved by the above-described slit portion existing region while ensuring the stretchability in the rear side region. Can be exhibited more reliably.
  • the stretchable sheet allows the original slit state to be restored from the opened state. Since it is easy to return to the closed state, it is possible to more reliably obtain an excellent wearing feeling and high absorption performance when the absorbent article is worn.
  • the absorbent article of this aspect is particularly excellent in stretchability because the absorbent article has a plurality of slit parts by visually recognizing the above wide slit part before wearing (that is, wearing).
  • the wearer can be expected to be a high-quality absorbent article (excellent in feeling) and exhibit excellent wearing feeling and high absorption performance not only in the expectation but also in actual wearing. can do.
  • the absorbent body in another aspect (aspect 2) of the present invention, has a rear slit portion in which no slit portion is present in a region on the rear side of the slit portion existing region. It has a non-existing region, and the second existing region includes a wide slit portion that is wider in the longitudinal direction than the slit portion in the central existing region.
  • the absorbent includes a wide slit portion in each of the first existence region and the second existence region in the slit portion existence region (that is, at least sandwiching the central existence region).
  • the region between the wide slit portion in the first existence region and the wide slit portion in the second existence region is an area where the plurality of slit portions are present. It can be easily recognized as (ie, stretchable region), and a higher expectation for the quality of the absorbent article (particularly the feeling of wearing) can be nurtured by the wearer.
  • the absorbent article of this aspect has the back side slit part nonexistence area
  • the absorber is less likely to lose shape or break, and the absorber has excellent extensibility and flexibility.
  • the rear slit portion non-existing region is a region including an edge on the rear side of the absorber.
  • the rear slit portion non-existing area having a relatively high strength is an area including the edge on the rear side of the absorbent body, the wearer is wearing the absorbent article. It is easy to adjust the position of the absorbent article in a state where the rear slit portion non-existing region is gripped and fixed to clothes such as underwear. Thereby, since a wearer can adjust the position of an absorptive article to a more suitable position at any time, he can obtain a much more excellent feeling of wear and a sense of security.
  • the rear slit part non-existing region includes an embossed part.
  • the absorbent article of this aspect 4 includes an embossed part that is easily noticed by the wearer in the rear slit part non-existing region, the wearer includes the above-described embossed part before wearing the absorbent article.
  • the wide slit portion in the second existence region adjacent to the slit portion non-existing region can be more easily recognized through the surface sheet, and the effects obtained by the absorbent article of the above-described aspect 2 can be more effectively exhibited. it can.
  • the absorbent article according to this aspect includes the embossed part, the rigidity of the rear slit part non-existing region is high, so that the wearer holds the rear slit part non-existing region and wears underwear, etc. It is easier to adjust the position of the absorbent article in a state of being fixed to the clothes, and the effects obtained by the absorbent article of the above-described aspect 3 can be more effectively exhibited.
  • the stretchable sheet in the absorbent article according to any one of Aspects 1 to 4, is composed of a colored sheet having a color different from that of the absorber.
  • the stretchable sheet disposed on the non-skin facing surface side of the absorbent body is constituted by a colored sheet colored in a color different from that of the absorbent body. Is more easily recognized by the color difference between the colored sheet (elastic sheet) and the absorbent body, which is visually recognized through the opening of the wide slit, and the expectation for the quality of the absorbent article (especially wearing feeling) It is possible to nurture the wearer more reliably.
  • the stretchable sheet is a back sheet.
  • the absorbent article of this aspect 6 is a back sheet in which the above-described stretchable sheet is easily visible to the wearer, the stretchability of the absorbent article is easily recognized from the backsheet, and the absorbent article is stretchable.
  • the wearer can be surely and more effectively cultivated a sense of expectation that it is a particularly excellent high-quality absorbent article.
  • the above-described stretchable sheet is a back sheet, there is no need to separately provide a stretchable sheet between the absorber and the back sheet, so that the degree of freedom in product design is improved. Thereby, since an absorbent article can be thinned, it is possible to further improve a feeling of wear.
  • the absorbent article in the absorbent article according to any one of Aspects 1 to 6, has at least one fold line extending in the width direction in plan view. The broken line overlaps the wide slit portion in the first existence region in the thickness direction.
  • the absorbent article of this aspect 7 When the absorbent article of this aspect 7 is folded in the longitudinal direction along the fold line and individually wrapped, the above wide slit portion is in a state in which tension is applied in the longitudinal direction by folding, and the wide slit portion is in a wide state. It can be held more reliably. Thereby, since the absorbent article of this aspect is maintaining the wide state of the above-mentioned wide slit part, even if it expand
  • the fold line is a mountain fold line in which the skin facing surface side of the absorbent article is convex.
  • the opening on the skin facing surface side of the wide slit portion is tensioned in the longitudinal direction by the aforementioned mountain fold. Therefore, the state (wide state) of the opening on the skin facing surface side that is easily visible to the wearer in the wide slit portion can be more reliably maintained. Thereby, the effect produced by the above-mentioned wide slit part can be more reliably and effectively exhibited.
  • the absorbent article of the present invention is a high-quality absorbent article that is particularly excellent in stretchability (that is, excellent in wearing feeling) without having to stretch the absorbent article before wearing. Can be nurtured by the wearer. Furthermore, at the time of wearing, it can exhibit excellent wear feeling and high absorption performance.
  • FIG. 1 is a plan view of a sanitary napkin 1 according to an embodiment of the present invention as viewed in the thickness direction from the top sheet side.
  • FIG. 2 is a plan view of the sanitary napkin 1 according to an embodiment of the present invention as viewed in the thickness direction from the back sheet side.
  • FIG. 3 is an end view of a longitudinal section taken along line III-III of FIG. 1 in the sanitary napkin 1 according to the embodiment of the present invention.
  • FIG. 4 is a perspective view schematically showing a state in which the sanitary napkin 1 according to the embodiment of the present invention is twisted in a direction twisted about the longitudinal direction.
  • FIG. 1 is a plan view of a sanitary napkin 1 according to an embodiment of the present invention as viewed in the thickness direction from the top sheet side.
  • FIG. 2 is a plan view of the sanitary napkin 1 according to an embodiment of the present invention as viewed in the thickness direction from the back sheet side.
  • FIG. 3 is an end view of a longitudinal section taken along
  • FIG. 5 is a plan view of the absorbent body 22 used in the sanitary napkin 1 according to one embodiment of the present invention in an unstretched state (natural state).
  • FIG. 6 is a plan view showing an elongated state of the absorbent body 22 used in the sanitary napkin 1 according to the embodiment of the present invention.
  • longitudinal direction refers to “a direction in which the length of a vertically long object in plan view is long”
  • width direction refers to “a direction in which the length of a vertically long object in plan view is short
  • Thin direction refers to "perpendicular to the object placed on the horizontal surface in the unfolded state”
  • the front side of the article is referred to as “in the longitudinal direction of the absorbent article, when the wearer wears the absorbent article, it is relatively distal to the wearer's abdomen (ie, relative to the wearer's back).
  • the other side that is relatively proximal is referred to as “the rear side of the absorbent article”.
  • FIG. 1 is a plan view of the sanitary napkin 1 according to an embodiment of the present invention in a state where the sanitary napkin 1 is expanded, as viewed in the thickness direction T from the surface sheet side, and FIG. It is the top view seen in thickness direction T from the back sheet side. 1 and 2, the upper side of the drawing corresponds to the front side of the absorbent article, and the lower side of the drawing corresponds to the rear side of the absorbent article.
  • FIG. 3 is an end view of the sanitary napkin 1 taken along the line III-III in FIG.
  • the sanitary napkin 1 includes a vertically long absorbent main body 2 having a longitudinal direction and a width direction in plan view, and a longitudinal direction of the absorbent main body 2. And a pair of substantially trapezoidal flap portions 3 and 3 ′ extending outward in the width direction at a position closer to the front side of the central portion.
  • the absorption main body portion 2 is located on the skin facing surface side in the thickness direction T and has a liquid-permeable surface sheet 21 having a light transmittance of 45% or more, a liquid impermeable back sheet 23 located in the non-skin-facing side, an absorbent body 22 having a plurality of slits S and the wide slit portion S E extending in the width direction W with positioned between the respective sheets, stretchable sheet having a (non-skin located on opposite side of the other words, the absorber 22) and at least said longitudinal stretch will be described later in the rear region a 3 located between the absorbent body 22 and backsheet 23 24 and a plurality of pressure-sensitive adhesives 9 that extend continuously or intermittently in the width direction on the surface of the back sheet 23 on the non-skin facing surface side are arranged along the longitudinal direction L (in a so-called stripe shape).
  • the pair of flap portions 3, 3 ′ has a topsheet 21 that extends outward in the width direction W from the absorbent main body portion 2 in the thickness direction T, and A back sheet 23 extended outward from the absorbent body 2 in the width direction W, and an adhesive part for fixing clothes extending in the longitudinal direction L, disposed on the surface of the back sheet 23 on the non-skin facing surface side 4, 4 '.
  • the absorbent body 2 When the sanitary napkin 1 is worn, the absorbent body 2 is opposed to the skin of the wearer's clothing (such as underwear) by the adhesive 9 disposed on the non-skin-facing surface side of the absorbent body 2.
  • the pair of flap portions 3 and 3 ′ After fixing to the surface on the surface side, the pair of flap portions 3 and 3 ′ were folded back to the non-skin facing surface side of the clothing, respectively, and arranged on the non-skin facing surface side surface of each of the flap portions 3 and 3 ′. It is used by being fixed to the surface on the non-skin facing surface side of the clothing by the adhesive portions 4, 4 ′. Therefore, when the sanitary napkin 1 is worn, the surfaces on the non-skin facing surface side of the pair of flap portions 3, 3 ′ are surfaces facing the wearer's skin surface.
  • the adhesive 9 in the absorbent main body 2 and the adhesive used in the adhesive portions 4 and 4 ′ in the flap portions 3 and 3 ′ are absorbent articles.
  • the adhesive is not particularly limited as long as it can be fixed to the wearer's clothes (such as underwear).
  • any adhesive such as a styrene polymer can be used.
  • the absorbent article of this invention does not need to have the said pair of flap part.
  • the absorption main body 2 has a front side edge in the longitudinal direction L that is located on the wearer's front side (abdomen side) when wearing the sanitary napkin 1 in plan view. Part 5 and a rear side edge 6 in the longitudinal direction L located on the wearer's rear side (back side) when the sanitary napkin 1 is worn, and further, between these edge parts 5, 6.
  • these areas A 1 to A 3 are each divided by a first imaginary straight line L 1 and a second imaginary straight line L 2 extending in the width direction W. Further, the absorber 22 in the absorber body 2, as shown in FIG. 1, are arranged so as to extend over from the front side region A 1 on the rear side region A 3.
  • the “excretion opening-corresponding area” refers to an area facing or abutting the wearer's excretion opening when the absorbent article is worn, and the type and use of the absorbent article (specifically, Is an area that is appropriately set for each type of absorbent article according to the type of liquid excreta such as urine, feces, menstrual blood, and the age and sex of the intended wearer.
  • the excretion opening corresponding region is usually a position near the center or the front side in the longitudinal direction of the absorbent article (for example, in the case where the absorbent article is an absorbent article having an absorbent main body portion and a flap portion, in plan view).
  • the front portion overlaps in the longitudinal direction with the flap portion, and the absorbent article has a constricted portion constricted on the inner side in the width direction at a substantially central portion in the longitudinal direction.
  • the position corresponds to the constricted portion in the absorbent main body, and when the absorbent article is composed of an oval absorbent main body.
  • the absorbent article is a night napkin or the like
  • the length in the longitudinal direction of the excretory opening corresponding region is less than 1/3 of the total length in the longitudinal direction of the absorbent article. It may be set to be.
  • the sanitary napkin 1 as shown in FIGS. 1 and 3, comprises a stretchable sheet 24 located between the absorbent body 22 and backsheet 23 in the rear region A 3, further, the absorber 22, in plan view, in the stretchable sheet 24 and the rear-side area a 3 overlapping in the thickness direction T, the slit portion existing areas where there are a plurality of slits S extending in the width direction W
  • the slit portion existing region A E as shown in FIG.
  • the slit portion existing area A E is divided into three equal parts in the longitudinal direction L by a first imaginary straight line l 1 for three equal divisions and a second virtual straight line for third equal division l 2 .
  • three regions which are fractionated by the virtual straight line i.e., the first existing areas a 1, a central presence regions a C and the second existing region a 2) are each in the width direction central axis on the C L extending in the longitudinal direction L the same Have a length in the longitudinal direction.
  • the “slit part” means a cut that penetrates the absorber in the thickness direction, and the direction in which the slit part extends (that is, the longitudinal direction of the slit part) is orthogonal to the direction.
  • Direction that is, the width direction of the slit portion.
  • the longitudinal direction and the width direction of the slit portion S are parallel to the width direction W and the longitudinal direction L of the sanitary napkin 1, respectively.
  • the “wide slit portion” is a slit portion that is widened in the width direction with respect to the slit portion in the center existing region a C (that is, the length of the slit portion in the width direction is long).
  • a slit portion having a width direction length (mm) is referred to as a wide slit portion.
  • the sanitary napkin 1 is the light transmittance of the topsheet 21 is 45% or more, and, the slit portion existing region A first existing area in E a 1 of the absorbent body 22 (i.e., since the region where the wearer of the sanitary napkin 1 is close to the likely corresponding to the excretion area a 2 noted before wearing) it contains a wide slit portion S E, wearer, before wearing the sanitary napkin 1, the wide slit portion S E of the first presence region a 1 in proximity to the corresponding to the excretion area a 2 (more specifically, the non-skin of the absorbent body 22 through the opening or openings of the wide slit portion S E
  • the stretchable sheet 24 disposed on the opposite surface side is easily recognized through the topsheet 21 due to a color difference (difference in lightness, color, etc.) from its peripheral part.
  • the sanitary napkin 1 wears a sense of expectation that the sanitary napkin 1 is a high-quality sanitary napkin that is particularly excellent in stretchability by having a plurality of slit portions S. It can be nurtured by the previous wearer.
  • FIG. 4 is a perspective view schematically showing a state in which the sanitary napkin 1 according to the present embodiment is twisted in a direction twisted around the longitudinal direction L as an axis.
  • Sanitary napkin 1 according to this embodiment in the rear region A 3 which is a region corresponding to the buttocks of the wearer when worn, the extendable elastic sheet 24 at least in the longitudinal direction L, the slits in the absorbent body 22 and a part presence area a E (i.e., the rear side region a 3 is constituted easily be deformed in a direction to twist as easily and axis the longitudinal direction L is curved deformed along the longitudinal direction L) Therefore, when the wearer performs an operation such as walking, the wearer by the buttocks moves right and left alternately, the rear side of the area a 3 slits present in the region a E in the direction sanitary napkin 1 is twisted even force is applied, (see Figure 4) by deforming in a direction in which the slit portion existing area
  • the sanitary napkin 1 is provided with the stretchable sheet 24 having stretchability in at least the longitudinal direction L in the rear region A 3, it is possible to secure the stretch in the rear region A 3, it is possible to obtain the effect that it is possible to maintain a state where the rear region a 3 described above in close contact with the skin surface of the wearer's buttocks more reliably.
  • the stretchable sheet 24 allows the above-described slit portion S to be opened from the open state. Since it is easy to return to the original closed state, it is possible to more reliably obtain the expected excellent wearing feeling and absorption performance.
  • the sanitary napkin 1 prior to wear, by the wide slit portion S E described above is visible to the wearer, the sanitary napkin 1 comprises a plurality of slits S
  • the wearer can be expected to be expected to be a high-quality sanitary napkin that is particularly excellent in stretchability (that is, excellent in wearing feeling).
  • an excellent wearing feeling and high absorption performance can be exhibited.
  • the topsheet 21 has a thickness direction in a region extending from the front region A 1 to the rear region A 3 of the sanitary napkin 1. It is arrange
  • a liquid permeable sheet member is not particularly limited as long as it satisfies the light transmittance requirements described later, and is, for example, a span formed using cellulose fibers or thermoplastic resin fibers subjected to hydrophilic treatment.
  • the surface sheet of the present invention has stretchability or extensibility in at least one direction (direction corresponding to the longitudinal direction L of the absorbent article). It is preferable to use a liquid-permeable sheet member having the same.
  • a liquid-permeable sheet member having such stretchability or extensibility is used as the surface sheet, the absorbent article is more easily deformed in accordance with the wearer's movement (that is, excellent in dynamic fit). Therefore, a feeling of wear can be further improved.
  • the liquid permeable sheet member having stretchability described above is not particularly limited, for example, stretchable nonwoven fabric such as urethane resin spunbond nonwoven fabric subjected to hydrophilic treatment; made of urethane resin stretched at least in one direction Laminated nonwoven fabric with concavo-convex structure in which spunbond nonwoven fabric and air-through nonwoven fabric are integrated by dot-like embossing; hydrophilic treatment consisting of elastic resin such as urethane resin or ethylene-vinyl acetate copolymer resin (EVA) A perforated film or the like to which can be applied can be suitably used.
  • stretchable nonwoven fabric such as urethane resin spunbond nonwoven fabric subjected to hydrophilic treatment
  • hydrophilic treatment consisting of elastic resin such as urethane resin or ethylene-vinyl acetate copolymer resin (EVA)
  • EVA ethylene-vinyl acetate copolymer resin
  • the liquid-permeable sheet member having the above-described extensibility is not particularly limited, and for example, a nonwoven fabric having a concavo-convex structure that can be extended in one direction (a direction corresponding to the longitudinal direction L of the absorbent article) is suitable. Can be used.
  • a concavo-convex structure for example, in a plan view, a plurality of linear ridges extending in the width direction of the surface sheet and arranged at a predetermined interval in the longitudinal direction, and between the adjacent ridges and Examples include a concavo-convex structure including a plurality of linear concave grooves extending in the width direction of the top sheet, and having a substantially wavy cross-sectional shape along the longitudinal direction.
  • line part protrudes toward the skin opposing surface side in the thickness direction of a surface sheet
  • the said groove part has a structure dented in the non-skin opposing surface side in the thickness direction of the surface sheet.
  • the structure that can be adopted as the stretchable concavo-convex structure is not limited to the above-described aspect, and for example, a plurality of convex portions as disclosed in Japanese Patent No. 5829349 and Japanese Patent No. 5829326 The aspect etc. which were comprised by the (groove part) and the groove part which has a some recessed part are employable.
  • the method for forming the stretchable concavo-convex structure as described above on the liquid permeable sheet member to be the top sheet is not particularly limited.
  • a method of continuously blowing a gas (for example, air) on the fiber web Any shaping method such as a compression molding method or a gear stretching method can be employed.
  • the liquid permeable sheet member having stretchability or extensibility used for the top sheet may have the above stretchability or extensibility in the entire region (entire surface). It is preferable that only the region corresponding to the stretch region (that is, the slit portion existence region) has the above-described stretchability or stretchability.
  • the region corresponding to the stretched region of the absorber is more easily deformed in accordance with the wearer's movement.
  • the state where the region is in close contact with the wearer's skin surface can be more reliably realized, while in the excretion opening corresponding region of the absorbent article, the above-described twist applied to the rear region of the absorbent article Since the force of the direction is not easily transmitted to the excretion port corresponding region, and the shape of the absorption main body in the excretion port corresponding region is further easily maintained, the liquid excretion discharged from the wearer is more stably absorbed. Can do.
  • the surface sheet 21 in this embodiment has a light transmittance of 45% or more.
  • the surface sheet in the present invention does not need to have a light transmittance of 45% or more in the entire region (entire surface), and has a light transmittance of 45% or more in at least the above-described rear region. Just do it.
  • the wearer absorbs the member such as the absorber disposed on the non-skin facing surface side of the surface sheet through the skin facing surface side of the surface sheet.
  • the light transmittance of the top sheet is preferably 50% or more, more preferably 55% or more from the viewpoint of transparency.
  • light transmittance in the present invention means “total light transmittance” measured according to “Measurement method A” of 5.5.2 of JIS K7105-1981.
  • the total light transmittance is measured using, for example, a colorimetric color difference meter (model NDH-300A) manufactured by Nippon Denshoku Industries Co., Ltd. under predetermined conditions (light receiving element: silicon photocell, filter conforming to JIS K7105-1981) : Color glass filter Y, measurement area: ⁇ 12 mm).
  • the size and shape of the surface sheet is not particularly limited as long as it can cover the surface of the absorbent body on the skin-facing surface side, and is suitable for the size, sex, use, etc. of the person wearing the absorbent article.
  • the basis weight of the surface sheet is not particularly limited as long as the effect of the present invention is not hindered.
  • a basis weight in the range of 5 g / m 2 to 100 g / m 2 can be adopted. From the viewpoint of liquid permeability and flexibility, it is preferably in the range of 20 g / m 2 to 50 g / m 2 .
  • the basis weight can be measured according to JIS L 1906 5.2.
  • the thickness of the surface sheet is not particularly limited as long as the effect of the present invention is not impaired, and for example, a thickness within the range of 0.001 mm to 5.0 mm can be adopted. From the viewpoint of property and flexibility, it is preferably in the range of 0.01 mm to 3.0 mm, and more preferably in the range of 0.1 mm to 1.0 mm.
  • the thickness of the top sheet and the back sheet described later can be measured according to the following ⁇ Method for measuring thickness of sheet member>.
  • an absorbent article contains sheet members (for example, liquid diffusable sheet etc.) other than a surface sheet and a back surface sheet, it can measure similarly about the thickness of the said sheet member.
  • ⁇ Method for measuring thickness of sheet member> A sample sheet having a predetermined size (for example, 100 mm ⁇ 100 mm) is cut out from the sheet member to be measured. (2) The cut sample sheet is set in an automated compression tester “KES FB-3A” manufactured by Kato Tech Co., Ltd., and the thickness (mm) when the pressure on the sample sheet by the measurement terminal of the tester is 49 Pa. ) And the measured thickness (mm) is taken as the thickness of the sample sheet.
  • FIG. 5 is a plan view of the absorbent body 22 used in the sanitary napkin 1 according to the above-described embodiment in an unstretched state (natural state), and FIG. 6 is an absorbent body 22 used in the sanitary napkin 1.
  • FIG. 5 is a plan view of the absorbent body 22 used in the sanitary napkin 1 according to the above-described embodiment in an unstretched state (natural state)
  • FIG. 6 is an absorbent body 22 used in the sanitary napkin 1.
  • the absorbent body 22 is disposed between the top sheet 21 and the back sheet 23 in the thickness direction T as shown in FIG. It is an absorptive member which absorbs and holds a wearer's liquid excrement.
  • the absorbent body 22 has a front edge 221 and a rear edge 222 in the longitudinal direction L in an arc shape on the front side and the rear side, respectively, in a plan view. It has a protruding longitudinal profile shape and is disposed in the central region including the widthwise center axis C L extending in the longitudinal direction L.
  • the absorber in this invention is not limited to the thing of such an aspect, For example, you may have arbitrary external shapes, such as a rectangle, an ellipse, and an hourglass shape. Further, the position at which the absorbent body is disposed is not particularly limited as long as it includes at least the entire region corresponding to the excretion opening, and the absorbent body may be disposed biased toward the front in the longitudinal direction of the absorbent article.
  • the absorber 22, except that a plurality of slits S and the wide slit portion S E described above are formed is not particularly limited, a known arbitrary absorber in the art be able to.
  • examples of such an absorbent include those in which an absorbent material containing a water-absorbing fiber such as pulp and / or a superabsorbent polymer is covered with a liquid-permeable covering sheet such as at least one tissue. .
  • the thickness of the absorber is not particularly limited as long as the effects of the present invention are not hindered.
  • a thickness within the range of 0.1 mm to 10 mm can be adopted, but the extensibility and absorbability can be adopted.
  • the thickness is preferably in the range of 0.3 mm to 3 mm.
  • the plurality of slit portions S formed in the absorber 22 are arranged such that the slit portions S adjacent to each other in the longitudinal direction L are one in the longitudinal direction L in plan view. It arrange
  • the plurality of slit portions are arranged in this way, when the extension region of the absorbent body formed by the plurality of slit portions is deformed in the twisted or longitudinal direction by the wearer's operation or the like, It is difficult for the absorber to be torn in the slit portion and to be broken in the longitudinal direction.
  • a portion where the slit portion does not exist can exhibit a predetermined absorption performance. Therefore, if such a portion is arranged without being unevenly distributed in the extension region of the absorber, the extension is performed. Good absorption performance can be exhibited even in the region.
  • region of the absorber 22 in this embodiment are demonstrated.
  • the absorber 22 has no front slit portion in which no slit portion is formed as a low extension region having a relatively low extension rate or a non-extension property in the front side region A 1 .
  • N 1 is the widthwise central portion of the absorbent body 22 (i.e., the portion extending over the width direction center axis C L extending in the longitudinal direction L) In order to be continuous.
  • the low elongation region of the absorber is present across the front area A 1 to the corresponding to the excretion area A 2, the absorption Since it is possible to secure a wide area where the shape of the body is easily maintained (that is, difficult to be deformed), the front area A 1 and the excretory mouth corresponding to the wearer's movement and underwear are relatively less affected in the region a 2, more stable over the liquid exudates discharged from the wearer for a long time, can be more reliably absorbed.
  • the absorbent body 22 in the present embodiment is compared with the above-described low extension region (that is, the slit-existing region N 2 in the excretion port corresponding region) in the excretion port corresponding region A 2 .
  • the side slit part existence area A ES which is located on the outer side in the width direction W of the absorber 22 and includes a plurality of slit parts S similar to the plurality of slit parts S in the rear side area A 3 described above.
  • the absorbent body 22 is configured to be extendable at least in the longitudinal direction L in the side slit portion existence area AES .
  • the absorbent body has such a side slit portion existence region AES as an extension region, such as walking of the wearer or have force is transmitted to twists from the rear side region a 3 described above by the operation, or even when the or force is applied in the width direction W of the absorbent article by the groins of the wearer, the above-mentioned side it is possible to slit portion existing area a ES to buffer these forces by stretching or deformation, low elongation region of the widthwise central portion in the excretion portion corresponding region a 2 of the absorbent body (i.e., corresponding to the excretion area The shape of the slit part non-existing region N 2 ) is more easily maintained.
  • the side slit portions existing area A ES described above, the absorbent for a region existing corresponding to the excretion area A 2 of the article, the slit portion existing area A E present in the rear region A 3 of the absorbent article This is a different area.
  • the absorbent body 22 in the present embodiment in plan view, in the stretchable sheet 24 and in the rear region A 3 overlapping in the thickness direction T, there are a plurality of slits S extending in the width direction W It has a slit portion existence area AE as an extension area.
  • Such slits existing area A E as described above, three areas which divided into three equal parts the slit portion existing area A E in the longitudinal direction L, that, located on the most proximal with respect to corresponding to the excretion area A 2 A first existence area a 1 , a second existence area a 2 located most distal to the excretion opening corresponding area A 2 , and a central existence area a C located between these two areas.
  • the first presence region a 1 includes a wide slit portion S E than the slit portion S is wider in the longitudinal direction L of the central existence region a C.
  • the second existence region a 2 also includes a wide slit portion S E (not shown).
  • the absorbent body 22 has such an extension region (that is, the slit portion existence region A E ) in the rear side region A 3 , when the wearer performs an operation such as walking, the rear portion extension region in the side region a 3 is, wearer motion (in particular, the right and left alternating motion at the hips) in accordance with the elongation or the like and underwear, as well as deformation of the direction of twist of the above, also parallel elongation in the longitudinal direction L by, absorber 22, it can be brought into close contact with the rear side area a 3 of the absorbent main body 2 and hence, the skin surface more accurately wearer.
  • wearer motion in particular, the right and left alternating motion at the hips
  • the absorber 22 in the present embodiment since the wearer to the first existing region a 1 in proximity to easily corresponding to the excretion area A 2 attention has wide slit portion S E above, wear who, before wearing the sanitary napkin 1, the wide slit portion S E above (more specifically, the non-skin facing side of the absorbent body 22 through the opening or openings of the wide slit portion S E The stretchable sheet 24 to be disposed) is easily recognized through the topsheet 21 due to a color difference (difference in lightness, color, etc.) from its peripheral part.
  • the absorber 22 includes the slit portion existing area A wide slit portion S E in the second presence region a 2 in E (i.e., so as to sandwich the central existence region a C because it contains wide slit portion S E) to the wearer, over the wide slit portion S E of the first presence area a 1 to a wide slit portion S E of the second present area a 2 region
  • the absorber 22 includes the slit portion existing area A wide slit portion S E in the second presence region a 2 in E (i.e., so as to sandwich the central existence region a C because it contains wide slit portion S E) to the wearer, over the wide slit portion S E of the first presence area a 1 to a wide slit portion S E of the second present area a 2 region
  • the absorbent body 22 has the slit portion existing area A E (elongated area) in the rear side area A 3 . Therefore, when the wearer performs an operation such as walking, the extension region is deformed in the above-described twisting direction in accordance with the wearer's movement (particularly, left and right alternating movement in the buttocks) and underwear elongation. well, also extend deformed in the longitudinal direction L, and rear region a 3 including the extension regions, can be brought into close contact with the greater skin surface accurately and more reliably wearer.
  • the absorbent main body 2 is flexible as well as the absorbent body 22 (in particular, since it is excellent in flexibility (thickness direction and width direction), it is possible to exhibit further excellent body compatibility (ie, fit) as a sanitary napkin (absorbent article).
  • “elongation” means 5.0 N in two predetermined directions opposite to each other according to the method described in “6.3 Tensile strength and elongation” of JIS L 1913: 2010. When pulled by force, it stretches 3% or more with respect to the length (100%) of the natural state (that is, the state before stretching) without breaking, ie, the length after stretching is 103% or more. Means to grow). Further, in this specification, the “elongation rate” is 5.0 N in two predetermined directions opposite to each other according to the method described in “6.3 Tensile strength and elongation rate” of JIS L 1913: 2010.
  • Elongation rate (%) [(length after extension of object (mm)) ⁇ (length of object in natural state (mm))] / (length of object in natural state (mm)) ⁇ 100
  • non-elongation means 5.0 N in two predetermined directions opposite to each other according to the method described in “6.3 Tensile strength and elongation” of JIS L 1913: 2010. When pulled by force, it means that the material does not stretch 3% or more with respect to the length of the object in the natural state without breaking.
  • non-elongation means less than 3% with respect to the length of the object in the natural state (100%) in addition to breaking without exceeding 3% with respect to the length of the object in the natural state. It also includes stretching (ie, “minimal stretching” where the length after stretching is less than 103%).
  • the “low extension region” refers to a region having a relatively low extension rate relative to the “extension region”, and the low extension region includes an extension region having a relatively low extension rate. Non-extension regions are also included.
  • extension / contraction means that an object is stretched to a stretching rate of 100% by pulling the object in two opposite directions with a predetermined force and then contracted by 70% or more when the force is released. (That is, the length after contraction is 130% or less with respect to the length (100%) of the object in the natural state (the state before extension)).
  • the plurality of slit portions S in the slit portion existence area A E of the absorber 22 is a predetermined number of slit portions S in the slit portion existence area A E. there a slit portion existing small area a S present, are arranged so as to have a slit portion absence small area a N of slits S are not present, the.
  • the slit portion non-existing small region AN is, in plan view, from one end (one end on the left side in FIG. 5) to the other end (the right side in FIG. 5) in the width direction W of the absorber 22.
  • a first non-existing small region A N1 extending toward the front side (upper side in FIG. 5) and one end of the absorbent body 22 in the width direction W, intersecting the first non-existing small region A N1.
  • a second non-existing small region AN2 extending rearward (downward in FIG. 5) from one end (left end in FIG. 5) to the other end (right end in FIG. 5), and the presence of the slit portion.
  • the absorbent body has slit portion non-existing small regions A N extending in the two specific directions (that is, the first non-existing small region A N1 and the second non-existing region).
  • the strength and absorption performance as an absorber can be sufficiently ensured, also, a slit portion existing small area a S surrounded by the slit portion absence subregion a N
  • the whole absorber can be extended uniformly, and the extension range can be made longer.
  • the force applied to the absorbent body can be sufficiently buffered, so that the rear region can be more reliably maintained while maintaining good absorption performance. Can adhere to the skin surface.
  • the arrangement form of the plurality of slit parts in the absorbent body is not limited to the arrangement form of the above-described embodiment, and the plurality of slit parts include, for example, a predetermined number of slit parts.
  • the existing slit part existence small area may be arranged in an area surrounded by the slit part nonexistence small area provided in a grid shape.
  • the above-mentioned several slit part can be arrange
  • the plurality of slit portions are arranged in this manner, it is possible to prevent the plurality of slit portions arranged in a straight line from acting like a perforation line and tearing the absorber.
  • the slit part S is formed in the substantially linear planar view shape extended in the width direction W, in the absorbent article of this invention, it is like this.
  • the slit portion can have an arbitrary plan view shape as long as the effects of the present invention are not impaired. Examples of such planar view shapes include arc shapes, V shapes, waveforms, zigzag shapes, and the like.
  • the length in the longitudinal direction of the slit portion and the wide slit portion formed in the absorber is not particularly limited, but is preferably in the range of 3 mm to 50 mm, more preferably in the range of 5 mm to 15 mm. .
  • the stretched region (slit portion existing region) of the absorber is further easily deformed in the twisting direction, and the stretched region can be sufficiently stretched in the longitudinal direction L.
  • moderate flexibility can be imparted to the absorber.
  • the length is 50 mm or less, when the absorber receives force from the outer side in the width direction W, it is difficult for the slit part and the wide slit part to open and tear, Good durability as an absorber can be secured.
  • the means for forming a plurality of slit portions in the absorber is not particularly limited, and any cutting means can be adopted.
  • a transport means such as a belt conveyor
  • a plurality of slit portions as described above can be formed in the absorbent body by pressing the cutting blade to penetrate.
  • the means for forming the wide slit portion in the absorber is not particularly limited.
  • a method using a cutting means or a method of forming a plurality of slit portions in the absorber and then applying a predetermined tension in the longitudinal direction of the absorber and opening the predetermined slit portion in the longitudinal direction to widen the width is adopted. be able to.
  • the plurality of slit portions and the wide slit portion may be formed simultaneously by the former method, or the wide slit portion may be formed after forming the plurality of slit portions by the former method or the latter method.
  • the absorber 22 as shown in FIG. 1, in the rear region A 3, the rear end of said rearward side region A 3 of the slit portion existing area A E and the absorber 22 located between the edge 222, and a rear-side slits absence region N 3 as a low elongation region.
  • Structure having such rear slits absence region N 3 although not an essential configuration in the present invention, the rear-side area A 3, the slit portion existing area A E (extension area) and the rear side
  • the region between the end edge 222 is a region that is relatively less affected by the wearer's movement and underwear elongation, and in this region, the rear slit portion non-existing region N 3 having a relatively high strength.
  • the above-described rear slit portion non-existing region is a region including an edge on the rear side of the absorber.
  • the wearer is not able to use the rear slit portion non-existing area when the relatively high strength rear slit part non-existing area is an area including the rear edge of the absorbent body.
  • the wearer adjusts the position of the absorbent article to a more appropriate position while wearing the absorbent article because it is easy to adjust the position of the absorbent article in a state of being gripped and fixed to the clothes such as underwear. As a result, it is possible to obtain a better wearing feeling and a sense of security.
  • the above-described rear slit portion non-existing region includes an embossed portion.
  • the wearer grasps the rear slit part non-existing region and positions the absorbent article in a state of being fixed to clothes such as underwear. Furthermore, since it becomes easy to adjust, the further excellent feeling of wear and a sense of security can be obtained.
  • the absorber includes the wide slit portion in the second existence region in the above-described slit portion existence region, the wearer is likely to pay attention to the rear slit portion non-existence region adjacent to the second existence region.
  • the wearer can more easily recognize the wide slit portion in the second existence region together with the embossed portion before wearing the absorbent article.
  • the wearer can use a region extending from the wide slit portion in the first existence region to the wide slit portion in the second existence region as a region in which a plurality of slit portions exist (that is, a stretchable region). It becomes easy to recognize, and a high expectation with respect to the quality (especially wearing feeling) of an absorbent article can be made to a wearer more reliably and more effectively.
  • the stretchable sheet 24 that can be stretched at least in the longitudinal direction L is a rear-side region that is a region corresponding to the wearer's buttocks when worn as shown in FIGS. 1 and 3. in a 3, between the absorbent body 22 and backsheet 23 (i.e., the non-skin facing side of the absorbent body 22) is disposed, stretch for imparting elasticity to the rear side area a 3 of the sanitary napkin 1 It is a sheet member.
  • stretchable sheet 24, as described above, is disposed at a position overlapping the slit existing area A E and the thickness direction T in the rear region A 3 of the absorbent body 22, the thickness and the slit portion existing area A E of It is not arranged in a portion that does not overlap with the direction T.
  • Sanitary napkin 1 according to this embodiment due to the provision of such a stretchable sheet 24, while ensuring the stretchability in the rear region A 3, effects are achieved by the slits existing area A E of the above The effect can be exhibited more reliably.
  • the wearer extends the sanitary napkin 1 in the longitudinal direction L before wearing and confirms the stretchability thereof, the sanitary napkin 1 is contracted in the longitudinal direction L by the stretchable sheet 24. Since the above-mentioned slit part S is easy to return from the open state at the time of extension to the original closed state, it is possible to more reliably obtain an excellent wearing feeling and absorption performance in the sanitary napkin 1.
  • the stretchable sheet is not particularly limited as long as it is a stretchable sheet member that can be stretched in at least one direction (direction corresponding to the longitudinal direction L of the absorbent article).
  • a stretchable film formed from a thermoplastic resin; an elastic film formed from a polyester resin, or the like can be used.
  • the elastic sheet is comprised with the colored sheet colored in the color different from an absorber.
  • the difference color difference such as lightness and color
  • seat is colored.
  • Both the skin facing surface side and the non-skin facing surface side may be colored, or only one surface of the skin facing surface side or the non-skin facing surface side may be colored. Even if only the surface on the non-skin facing surface side is colored, if the coloring is seen through the surface on the skin facing surface side, the colored sheet has a color different from that of the absorber on the surface on the skin facing surface side. Will be recognized.
  • the means for coloring the stretchable sheet member that becomes the stretchable sheet is not particularly limited, and means using a pigment or dye, means using printing, and the like can be employed.
  • the above-described stretchable sheet may be a back sheet of an absorbent article.
  • the stretchability of the absorbent article is easily recognized from the backsheet, so that the absorbent article is particularly excellent in stretchability. The expectation that it is an absorbent article can be nurtured by the wearer more reliably and more effectively.
  • the above-described stretchable sheet is a back sheet, there is no need to separately provide a stretchable sheet between the absorber and the back sheet, so that the degree of freedom in product design is improved. Thereby, since an absorbent article can be thinned, a feeling of wear can further be improved.
  • the back sheet 23 is in the thickness direction in the region extending from the front region A 1 to the rear region A 3 of the sanitary napkin 1. It is arrange
  • Such a liquid-impermeable sheet member is not particularly limited, and for example, a conventionally known liquid-impermeable sheet such as a resin film such as polyethylene or polypropylene having air permeability, or a laminate in which a nonwoven fabric is bonded to the resin film.
  • the back sheet in the present invention is preferably a liquid-impermeable sheet member having stretchability or extensibility in at least one direction (direction corresponding to the longitudinal direction L of the absorbent article). .
  • the absorbent article is more easily deformed in accordance with the wearer's movement (that is, excellent in dynamic fit). Therefore, a feeling of wear can be further improved.
  • the liquid impervious sheet member having stretchability described above is not particularly limited, and for example, a stretchable sheet member similar to the stretchable sheet described above can be suitably used.
  • the liquid-impermeable sheet member having the above-described extensibility is not particularly limited, and for example, a thermoplastic resin sheet having a bellows structure that can be extended in one direction (a direction corresponding to the longitudinal direction L of the absorbent article). A member etc. can be used conveniently.
  • the backsheet 23 as shown in FIGS. 2 and 3, and has the rear region the longitudinal direction L in extendable bellows structure in A 3 B . 2 and 3,
  • the bellows structure B includes a plurality of linear convex portions B 1 extending in the width direction W of the back sheet 23 and arranged in the longitudinal direction L at a predetermined interval in plan view. And a plurality of linear grooves B 2 positioned between adjacent convex portions B 1 and extending in the width direction W of the back sheet 23, and the cross-sectional shape along the longitudinal direction L is substantially zigzag. It is the shape of.
  • the convex portion B 1 has a structure protruding to the skin facing surface side of the back sheet 23 in the thickness direction T of the back sheet 23, and the groove B 2 is the thickness direction of the back sheet 23. In T, it has the structure dented in the non-skin opposing surface side of the said back surface sheet 23. As shown in FIG.
  • backsheet 23 has a longitudinal direction L in extendable bellows structure B in the rear region A 3, by the bellows structure B extensibility in the longitudinal direction L of the rear region A 3 it is possible to obtain more reliably, the rear region a 3 is it is possible to more reliably achieve a state of close contact with the skin surface of the wearer, the direction of the twists of the above applied to the rear region a 3 force, hardly transmitted to the excretion portion corresponding region a 2.
  • the absorbent body 22 such as in the present embodiment in which a plurality of slits S or the wide slit portion S E described above is formed
  • the liquid excrement such as menstrual blood discharged from the wearer
  • the backsheet 23 has a bellows structure B as described above
  • the liquid excrement which has reached the backsheet 23 said along the groove portion B 2 which extends in the width direction W of the bellows structure B is diffused in the width direction W, can be absorbed from a wide range of locations in the non-skin facing side surface of the absorbent body 22.
  • the back sheet has the bellows structure as described above, it is possible to impart flexibility, cushioning properties, etc. in the thickness direction of the absorbent article, further improving the wearing feeling of the absorbent article. Can be made.
  • the absorbent article of the present invention has extensibility, stretchability, fit, flexibility and the like for the wearer. There is also an advantage that it is easy to recognize that it is a particularly excellent product.
  • the height of the convex portion does not hinder the effect of the present invention.
  • a height in the range of 0.1 mm to 1.2 mm can be adopted, but preferably 0.2 mm to 1 in terms of extensibility, cushioning properties, liquid diffusibility, and the like.
  • the pitch of the bellows structure (that is, the distance (mm) between the top centers (ridge lines) of two adjacent convex portions) is not particularly limited, and is, for example, in the range of 0.5 mm to 5.0 mm. However, it is preferably in the range of 1.0 mm to 4.0 mm from the viewpoints of extensibility, cushioning properties, liquid diffusibility, and the like.
  • the pitch of the bellows structure can be measured as a distance (mm) between the top centers (ridge lines) of two adjacent convex portions based on a planar photograph or planar image of the back sheet in a non-pressurized state. it can.
  • the structure that can be adopted as the expandable bellows structure is not limited to the above-described embodiment.
  • the convex part and the groove part in the above-described bellows structure are at least partially oriented in plan view. It is possible to adopt a mode that extends while changing (for example, in a wave shape or a zigzag shape), a mode in which the interval between two convex portions adjacent at least partially is not constant, or the like.
  • the method for forming the stretchable bellows structure as described above on the liquid-impermeable sheet member to be the back sheet is not particularly limited.
  • any application such as a compression molding method, a vacuum molding method, or a gear stretching method can be used.
  • Shape method can be adopted.
  • the liquid-impermeable sheet member having stretchability or stretchability used for the back sheet may have the stretchability or stretchability described above in the entire region (entire surface). It is preferable that only the area
  • the region corresponding to the stretched region of the absorber is further deformed in accordance with the movement of the wearer. Therefore, in the region corresponding to the excretion opening of the absorbent article, the twist described above applied to the rear side region of the absorbent article can be realized more reliably.
  • the size and shape of the back sheet is not particularly limited as long as it can prevent leakage of liquid excrement discharged from the wearer, and the size, sex, and use of the absorbent article wearer Any dimension and shape can be adopted depending on the above.
  • the thickness of the back sheet is not particularly limited as long as the effect of the present invention is not impaired.
  • a thickness in the range of 0.001 mm to 5.0 mm can be adopted, but the liquid impermeability and flexibility are not limited. From the standpoints of air permeability and air permeability, it is preferably in the range of 0.003 mm to 3.0 mm, and more preferably in the range of 0.01 mm to 1.0 mm.
  • the top sheet 21 and the back sheet 23 are in the state where the absorbent body 22 and the elastic sheet 24 are sandwiched therebetween, and the outer peripheral edge of each sheet is a hot melt type. Are bonded to each other by an adhesive.
  • the means for joining the top sheet and the back sheet is not particularly limited, and in addition to the above-mentioned adhesive, any joining means such as a heat seal method and an ultrasonic joining method can be adopted.
  • styrene-isoprene-styrene block copolymer SIS
  • SBS styrene-butadiene-styrene block copolymer
  • SEBS ethylene copolymer
  • the sanitary napkin 1 has a width with respect to the central axis C L in the width direction in a plan view at least in the low extension region N 2 of the excretory opening corresponding region A 2.
  • Two linear recesses P and P ′ extending in the longitudinal direction L of the absorbent main body 2 and having a bottom portion with a higher density than other portions are provided on both sides in the direction.
  • the linear recesses P and P ′ are formed by heating or non-laminating a laminated body in which the top sheet 21, the absorbent body 22, the stretchable sheet 24 and the back sheet 23, which constitute the absorption main body 2, are stacked in this order.
  • the top sheet 21, the absorber 22 and the back sheet 23 are integrated at the bottom of '.
  • the two linear recesses P, P ', as shown in FIG. 1 extends over the rear region A 3 from the front side area A 1, the stretch The sheet 24 does not overlap in the thickness direction T.
  • the absorbent article of the present invention Although it is not an essential constituent requirement in the absorbent article of the present invention to have such a linear recess, if the absorbent article has such two linear recesses, the wearer's action Even when a force in the above-described twisting direction is applied to the rear region of the absorbent article due to, for example, or a force is applied in the width direction W of the absorbent main body by the wearer's buttocks, the excretory opening In the region that is the central portion of the corresponding region (that is, the region sandwiched between the two linear recesses), the shape of the absorbent main body is more easily maintained due to the rigidity of the hard linear recess. Liquid excretion such as menstrual blood discharged from the wearer can be more stably and steadily absorbed.
  • the shape of the linear concave portion in plan view is not particularly limited, and may be a straight line, a broken line, a zigzag, a geometry, as well as a shape (see FIG. 1) combining curves as in the above-described embodiment.
  • Arbitrary shapes such as a shape and a predetermined design shape (floral pattern etc.), can be adopted.
  • the two linear recesses P, P ' is viewed in plane, on both sides in the width direction with respect to the widthwise central axis C L, the longitudinal direction of the absorbent main body 2
  • the linear recesses can, for example, both sides in the width direction with respect to the widthwise central axis C L, even extend only to the corresponding to the excretion area, or from the excretion portion corresponding region of one of the said front region or the rear region It may extend over only the region, or may be arranged along the longitudinal direction L by a total of four or more.
  • the absorbent article of this invention has at least 1 fold line extended in the said width direction by planar view, and the said fold line has overlapped with the said wide slit part in the said 1st existence area
  • the fold line overlaps with the wide slit portion in the first existence region in the thickness direction, when the absorbent article is folded in the longitudinal direction along the fold line and individually wrapped, the above wide slit portion is folded. Since the tension is applied in the longitudinal direction, the wide state (the widened state) of the wide slit portion can be more reliably held.
  • the above-mentioned fold line is preferably a mountain fold fold line in which the skin facing surface side of the absorbent article is convex.
  • a fold line is such a fold-fold fold line
  • the opening on the skin facing surface side of the wide slit portion is longitudinally formed by the above-described fold-fold. It is in a state where tension is applied, and the state (wide state) of the opening on the skin facing surface side that is easily visible to the wearer in the wide slit portion can be more reliably held. Thereby, the effect produced by the above-mentioned wide slit part can be more reliably and more effectively exhibited.
  • the absorbent article of the present invention is not limited to the above-described embodiment, and can be appropriately combined and changed without departing from the object and spirit of the present invention.
  • the present invention can be applied to various absorbent articles such as a panty liner and a (light) incontinence pad.
  • ordinal numbers such as “first” and “second” are used to distinguish items with the ordinal numbers, and mean the order, priority, importance, etc. of each item. Not what you want.

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)
  • Dermatology (AREA)
  • Absorbent Articles And Supports Therefor (AREA)

Abstract

La présente invention concerne un article absorbant qui est capable de répondre aux attentes d'un utilisateur concernant un article absorbant de haute qualité, qui présente, en particulier, une excellente élasticité sans nécessité d'étirer l'article absorbant avant de le porter, et qui est capable d'apporter un excellent confort de port et de présenter une capacité d'absorption élevée lorsqu'il est porté. Cet article absorbant comprend une feuille élastique (24) disposée dans une région latérale arrière (A3) et placée sur un côté de surface ne faisant pas face à la peau d'un élément absorbant (22), et une feuille de surface (21) présentant une transmittance de lumière de 45 % ou plus. En outre, l'élément absorbant (22) comprend, dans la région de côté arrière (A3) qui chevauche la feuille élastique (24) dans le sens de l'épaisseur, une région existante de partie fendue (AE) dans laquelle se trouve une pluralité de parties fendues qui s'étendent dans le sens de la largeur, et une région non existante de partie fendue (N2) dans une région correspondant à l'ouverture d'excrétion (A2), la région existante de la partie fendue (AE) comprenant une partie fendue large (SE) dans une première région existante (A1) qui est la plus proche de la région correspondant à l'ouverture d'excrétion (A2).
PCT/JP2017/000470 2016-04-28 2017-01-10 Article absorbant Ceased WO2017187667A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201780023904.8A CN109069325B (zh) 2016-04-28 2017-01-10 吸收性物品

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Application Number Priority Date Filing Date Title
JP2016092040A JP6279009B2 (ja) 2016-04-28 2016-04-28 吸収性物品
JP2016-092040 2016-04-28

Publications (1)

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WO2017187667A1 true WO2017187667A1 (fr) 2017-11-02

Family

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PCT/JP2017/000470 Ceased WO2017187667A1 (fr) 2016-04-28 2017-01-10 Article absorbant

Country Status (3)

Country Link
JP (1) JP6279009B2 (fr)
CN (1) CN109069325B (fr)
WO (1) WO2017187667A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7562441B2 (ja) * 2021-02-17 2024-10-07 大王製紙株式会社 使い捨ておむつ

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07506750A (ja) * 1992-05-14 1995-07-27 ザ、プロクター、エンド、ギャンブル、カンパニー タック付きの長手方向側縁を有する吸収材製品
JP2005512682A (ja) * 2001-12-19 2005-05-12 ザ プロクター アンド ギャンブル カンパニー 吸収性物品
JP2016013200A (ja) * 2014-06-30 2016-01-28 ユニ・チャーム株式会社 吸収性物品

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5716349A (en) * 1991-07-23 1998-02-10 The Procter & Gamble Company Absorbent article having longitudinal side margins with tucks
JP4824452B2 (ja) * 2006-03-30 2011-11-30 株式会社リブドゥコーポレーション 使い捨て吸収性物品の製造方法
JP5685430B2 (ja) * 2009-12-09 2015-03-18 花王株式会社 吸収性物品

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07506750A (ja) * 1992-05-14 1995-07-27 ザ、プロクター、エンド、ギャンブル、カンパニー タック付きの長手方向側縁を有する吸収材製品
JP2005512682A (ja) * 2001-12-19 2005-05-12 ザ プロクター アンド ギャンブル カンパニー 吸収性物品
JP2016013200A (ja) * 2014-06-30 2016-01-28 ユニ・チャーム株式会社 吸収性物品

Also Published As

Publication number Publication date
JP2017196339A (ja) 2017-11-02
CN109069325B (zh) 2020-01-17
JP6279009B2 (ja) 2018-02-14
CN109069325A (zh) 2018-12-21

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