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WO2012105463A1 - Article absorbant - Google Patents

Article absorbant Download PDF

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Publication number
WO2012105463A1
WO2012105463A1 PCT/JP2012/051908 JP2012051908W WO2012105463A1 WO 2012105463 A1 WO2012105463 A1 WO 2012105463A1 JP 2012051908 W JP2012051908 W JP 2012051908W WO 2012105463 A1 WO2012105463 A1 WO 2012105463A1
Authority
WO
WIPO (PCT)
Prior art keywords
wings
main body
absorbent
absorbent article
absorbent main
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/JP2012/051908
Other languages
English (en)
Inventor
Yusuke Kawakami
Nobuhiro Tagawa
Shoshi Kosaka
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
Priority claimed from JP2011020146A external-priority patent/JP5693267B2/ja
Priority claimed from JP2011021026A external-priority patent/JP2012157641A/ja
Application filed by Unicharm Corp filed Critical Unicharm Corp
Publication of WO2012105463A1 publication Critical patent/WO2012105463A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/56—Supporting or fastening means
    • A61F13/5605—Supporting or fastening means specially adapted for sanitary napkins or the like
    • A61F13/5616—Supporting or fastening means specially adapted for sanitary napkins or the like using flaps, e.g. adhesive, for attachment to the undergarment
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—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
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/51121—Topsheet, i.e. the permeable cover or layer facing the skin characterised by the material

Definitions

  • the present disclosure relates to an absorbent article.
  • the wings are formed by bonding together members forming a main body of the absorbent article, such as a back sheet and a top sheet, in regions that project laterally from the main body of the absorbent article
  • a main body portion without wings in which an absorber is interposed between a top sheet and a back sheet is formed, whereas wing portions are formed by bonding a pair of wing pieces, which is obtained from an original fabric different from that of the top and back sheets, to both sides of the main body portion.
  • wing portions are more likely to separate from the main body portion. Therefore, various methods for fixing wing portions to a main body portion have been proposed.
  • Japanese Patent No. 4372628 discloses an absorbent article obtained as follows: each wing piece is fixed to a skin contact sheet at a skin contact-side bonding portion and also fixed to an undergarment contact sheet at an undergarment contact-side bonding portion. A width of the skin contact-side bonding portion is smaller than a width of the undergarment contact-side bonding portion. An outermost end position of the skin contact- side bonding portion is located outboard of an outermost end position of the undergarment contact-side bonding portion.
  • the inventor has recognized the following points. Upon wearing of an absorbent article, the wearer holds the wings and then wraps them around the crotch portion of the undergarment. Accordingly, a significant load is imposed on the wing member. To prevent problems such as tearing and ripping from occurring upon wearing or during use, the wing member is configured to have sufficient strength along with sufficient bonding strength between the wing member and the main body.
  • the wing pieces when the wing pieces are formed, the wing pieces are cut off in the same direction as a flow direction of an original fabric.
  • the wing member has fiber alignment in a longitudinal direction of the main body. In this case, it might be difficult to maintain the strength of the wing member against tension upon wearing, and a wing member with high basis weight might be needed.
  • Increasing the strength of the wings by increasing the basis weight or increasing the bonding strength between the wings and the main body can prevent ripping . of the wings upon wearing.
  • increased basis weight leads to increased stiffness of the wing members.
  • the interfaces between the wings and the main body may cause wearing discomfort upon skin contact with the interface portions.
  • the production line flow is orthogonal to the longitudinal direction of the product.
  • the fiber alignment of a nonwoven fabric in materials forming the product is orthogonal to the longitudinal direction of the product.
  • the absorbed fluid is more likely to spread in bilateral directions rather than in the longitudinal direction due to the influence of fiber alignment of a top sheet. This may easily cause lateral fluid leakage, so that the absorption capacity of an absorber cannot be sufficiently utilized.
  • absorber itself may be made larger in volume with
  • incontinence pads are basically used at all times and intended to be worn for a longer time (approximately one pad per day) than sanitary napkins. Accordingly, wearing comfort is more necessary for mild incontinence pads than for sanitary napkins.
  • inventions comprises an absorbent main body and a pair of wings extending from both side edges of the absorbent main body.
  • the absorbent main body comprises a fluid- permeable top sheet, a fluid-impermeable back sheet, and a fluid-retaining absorber interposed between the top sheet and the back sheet.
  • the top sheet and the wings are made of separate nonwoven fabrics. Fiber alignment in the top sheet is in a longitudinal direction of the absorbent main body, whereas fiber alignment in the wings is in a transverse direction of the absorbent main body.
  • inventions comprises an absorbent main body and a pair of wings extending from both side edges of the absorbent main body.
  • the absorbent main body comprises a fluid- permeable top sheet, a fluid-impermeable back sheet, and a fluid-retaining absorber interposed between the top sheet and the back sheet.
  • the wings are made of a nonwoven fabric. Fiber alignment in the wings is in a transverse direction of the absorbent main body.
  • Fig. 1 is a partially cut-away plan view of an absorbent article according to some embodiments of the present invention.
  • Fig. 2 is a bottom view of the absorbent article of Fig. 1.
  • Fig. 3 is a schematic cross-sectional view taken along line A-A of Figs. 1 and 2.
  • Fig. 4 is a plan view showing one example of a shape of a wing.
  • Fig. 1 is a partially cut-away plan view of an absorbent article 1 according to some embodiments of the present invention.
  • Fig. 2 is a bottom view of the absorbent article 1 of Fig. 1.
  • Fig. 3 is a schematic cross-sectional view taken along line A-A of Figs. 1 and 2.
  • the absorbent article 1 includes an absorbent main body 5 including a fluid-permeable top sheet 2, a fluid- impermeable back sheet 3, and a fluid-retaining absorber 4 interposed between the sheets, and a pair of wings 7, 7 extending from both side edges 6, 6 of the absorbent main body.
  • the top sheet 2 and. the wings 7 are made of separate nonwoven fabrics. Specifically, the top sheet 2 and the wings 7 are independent members, rather than integral parts of a one-piece member.
  • the material forming the top sheet 2 is a nonwoven fabric and the material forming the wings 7 is also a nonwoven fabric.
  • the nonwoven fabric forming the top sheet 2 may be the same kind as or a different kind from that of the wings 7.
  • Fiber alignment in the top sheet 2 is in a
  • fiber alignment means a fiber orientation direction as viewed on a nonwoven fabric surface.
  • fiber alignment is in a specific direction means that fibers that form from 50% to 100% of a total fiber weight of the nonwoven fabric have fiber alignment within a range of -45° to +45° with respect to the specific direction.
  • fiber alignment in the top sheet 2 is in the longitudinal direction Y of the absorbent main body 5 when fibers that form 50% or more of a total fiber weight of the top sheet 2 have fiber alignment within a range of
  • fiber alignment in the wings 7 is in the transverse direction X of the absorbent main body 5 when fibers that form 50% or more, of a total fiber weight of the wings 7 have fiber
  • fiber alignment As a method for measuring fiber alignment of a nonwoven fabric, there can be used a commonly used measurement method, which is, for example, a measurement method equivalent to a fiber alignment property test method using the zero-span tensile strength of TAPPI Standard T481. Additionally, as a quick and easy method, fiber alignment may be measured using a tensile strength ratio (MD/CD) of a nonwoven fabric between a production line direction (MD - machine direction) of the nonwoven fabric and an orthogonal direction (CD - cross direction) thereof.
  • MD/CD tensile strength ratio
  • test pieces having a length of 200 mm and a width of 50 mm are subjected to testing under conditions with a cross-head speed of 500 mm/min and an inter-chuck distance of 150 mm to obtain tensile strength from a maximum load under tension and also calculate a degree of elongation from elongation at the maximum load.
  • MD/CD strength ratio
  • a nonwoven fabric is produced by forming fibers into a sheet form to obtain a web and bonding or entangling the fibers within the web to form the non-woven fabric, with or without further finishing processes.
  • a continuous production apparatus is .used to produce a long nonwoven fabric sheet.
  • fibers forming the nonwoven fabric tend to be aligned in the longitudinal direction of the long sheet, namely, the machine direction or production line direction MD in which the web or the sheet proceeds in the production apparatus. Accordingly, ordinary nonwoven fabrics industrially produced as long sheets have more than a little fiber alignment.
  • top sheet 2 when the top sheet 2 is cut from a nonwoven fabric, cutting is performed such that the fiber alignment in the nonwoven fabric forming the top sheet 2 is in the longitudinal direction of the absorbent main body 5 .
  • cutting is performed such that the fiber alignment in the nonwoven fabric forming the wings 7 is in the transverse direction of the absorbent main body 5. This makes the fiber alignment in the top sheet 2 orthogonal to the fiber alignment in the wings 7.
  • Fluid tends to spread along fiber alignment.
  • fluid spreads in the longitudinal direction and can be efficiently absorbed.
  • the wings are provided as a separate member, lateral leakage is rarely induced on the top ⁇ side.
  • the absorbent main body does not need to have an extra absorbing function and thus can be thinner.
  • the wing member can be made of a low basis weight material or a highly air-permeable material.
  • a low basis weight member can be selected. Accordingly, a portion of the absorbent article wrapping around the undergarment in use can be made less stiff and uneven texture can be reduced, allowing for comfortable wearing even for long hours.
  • using a highly air-permeable material for the wing member can also improve the air permeability of a portion where the absorbent main body and the wings overlap upon wearing. Thereby, a wet feeling can also be reduced.
  • a member forming the absorbent main body has fiber alignment in the longitudinal direction of the absorbent main body, whereas the wing member has fiber alignment in the transverse direction of the absorbent main body. Accordingly, upon wearing of the article, the wing member reacts against force imposed from the transverse direction at the crotch portion to allow twisting to be mostly prevented.
  • the wing member is configured as a separate body from the absorbent main body, the bonding strength between the absorbent main body and the wing member is a consideration.
  • fixing adhesive portions 21 and 22 are provided by applying an adhesive agent for fixing the article to an undergarment.
  • the fixing adhesive portions are provided on both the backside of the absorbent main body 5 and the backsides of the wings 7.
  • the fixing adhesive portion 21 provided on the backside of the absorbent main body 5 may be a single portion or may be split into a plurality of portions.
  • the fixing adhesive portion 22 provided on the backsides of the wings 7 may be a single portion or may be split into a plurality of portions.
  • an extension direction ' of the plurality of streaks of the fixing adhesive portions 21 provided on the backside of the absorbent main body 5 coincides with the direction of the fiber alignment in the top sheet 2 (e.g., the longitudinal direction of the absorbent main body 5)
  • an extension direction of the plurality of streaks of the fixing adhesive portions 22 provided on the backsides of the wings 7 coincides with the direction of the fiber alignment in the wings 7 (e.g., the
  • the extension direction of the plurality of streaks of the fixing adhesive portions 21 ⁇ provided on the backside of the absorbent main body 5 is arranged to coincide with the longitudinal direction of the absorbent article
  • the extension direction of the plurality of streaks of the fixing adhesive portions 22 provided on the backsides of the wings 7 is arranged to coincide with the transverse direction of the absorbent article. Accordingly, upon wearing, the fixing adhesive portions 21 intersect with the fixing adhesive portions 22. This stabilizes attachment to the undergarment, whereby displacement hardly occurs even over long hours of use.
  • the number and size of the fixing adhesive portions is no specific limitation on the number and size of the fixing adhesive portions as long as the intended fixation can be achieved.
  • the number of the fixing adhesive portions 21 provided on the backside of the absorbent main body 5 is 1 to 10, and more preferably 2 to 8.
  • the width of a single one of the fixing adhesive portions 21 provided on the backside of the absorbent main body 5 is preferably 2 to 40 mm, and more preferably 5 to 20 mm.
  • the pitch of the fixing adhesive portions 21 (a distance between the center lines of adjacent two fixing adhesive portions) provided on the backside of the absorbent main body 5 is preferably 3 to 60 mm, and more preferably 8 to 30 mm.
  • provided on the backsides of the wings 7 is preferably 1 to 10, and more preferably 2 to 7.
  • the width of a single one of the fixing adhesive portions 22 provided on the backsides of the wings 7 is preferably 2 to 40 mm, and more preferably 5 to 20 mm.
  • the pitch of the fixing adhesive portions 22 (a distance between the centerlines of adjacent two fixing adhesive portions) provided on the backsides of the wings 7 is preferably 3 to 60 mm, and more preferably 8 to 30 mm.
  • the absorbent article 1 has a shape as shown in Fig. 2; a size Li in the longitudinal direction Y of the absorbent main body 5 is 190 mm; a size Wi in the transverse direction X of the absorbent main body 5 is 85 mm; a size L 2 in the longitudinal direction Y of the wings 7 is 80 mm; and a size W 2 in the transverse direction X of the wings 7 is 32.5 mm, by way of example the number of the fixing adhesive portions provided on the backside of the absorbent main body 5 is 5; the width of a single one of the fixing adhesive portions provided on the backside of the absorbent main body 5 is 5 mm; the pitch of the fixing adhesive portions provided on the backside of the absorbent main body 5 is 10 mm; the length of the fixing adhesive portions provided on the backside of the
  • absorbent main body 5 is.135 mm; the number of the fixing adhesive portions provided on the backside of each of the wings 7 is 7; the width of a single one of the fixing adhesive portions provided on the backsides of the wings 7 is 5 mm; the pitch of the fixing adhesive portions provided on the backsides of the wings 7 is 10 mm; and the length of the fixing adhesive portions provided on the backsides of the wings 7 is 17.5 mm.
  • the pair of wings 7, 7 may comprise a continuous one-piece member or discontinuously separate members. That is, the .pair of wings may be made of a one-piece nonwoven fabric (namely, a single member) or separate nonwoven fabrics (namely, two members).
  • Figs. 1 and 3 show an example in which the pair of wings is made of a one-piece nonwoven fabric.
  • the pair of wings is made of a one-piece nonwoven fabric.
  • the pair of wings is formed as separate members, a seal or an
  • the adhesive agent is applied for strong bonding so as to prevent the detachment of the wings from the absorbent main body.
  • the seal or adhesive agent can be reduced, leading to improvement in feeling when wearing .
  • the top sheet 2 serves to pass a bodily fluid excretion, such as urine or menstrual blood, to an absorber 4 provided under the top sheet, as well as to retain the absorber 4 by sandwiching the absorber 4
  • the top sheet 2 is made of a fluid-permeable nonwoven fabric. Although the nature of the nonwoven fabric is not
  • nonwoven fabrics specifically limited, air-through nonwoven fabrics, spun bond nonwoven fabrics, and SMS ( spunbonded-meltblown- spunbonded) nonwoven fabrics are preferable in terms of pleasant texture.
  • fibers forming a nonwoven fabric include synthetic resin fibers such as
  • polypropylene PP
  • PE polyethylene
  • PET poly (ethylene terephthalate)
  • biodegradable natural products such as poly (lactic acid), chitosan, and
  • the back sheet 3 serves to prevent external leakage of fluid, such as urine or menstrual blood, that has been absorbed into the absorber 4 and is made of a material that can prevent such a fluid from leaking out.
  • fluid such as urine or menstrual blood
  • the back sheet made of a fluid- impermeable and air-permeable material
  • hot and humid air during wearing can be reduced, thereby allowing for the reduction of discomfort during wearing.
  • a material include fluid-impermeable films, air-permeable films, which are mainly made of polyethylene (PE) , polypropylene (PP) or like, and composite sheets formed by laminating a fluid-impermeable film on one side of a nonwoven fabric such as a spunbonded nonwoven fabric.
  • hydrophobic nonwoven fabrics Preferably, hydrophobic nonwoven fabrics, water- impermeable plastic films, laminate sheets made of nonwoven fabrics and water-impermeable plastic films and the like can be used.
  • SMS nonwoven fabrics there may be used SMS nonwoven fabrics in which a highly water-resistant melt-blown nonwoven fabric is sandwiched by a highly strong spunbonded nonwoven fabric.
  • the nonwoven fabric used to form the wings 7 can be the same nonwoven fabric as that of the top sheet. In terms of pleasant texture and air permeability,
  • the wings 7 are made of a water-repellent nonwoven fabric alone.
  • a water-repellent nonwoven fabric alone.
  • air-through nonwoven fabrics, spunbonded nonwoven fabrics, and SMS nonwoven fabrics can be mentioned.
  • SMS nonwoven fabrics are preferable.
  • the nonwoven fabric forming the wings has a basis weight of preferably 15 to 40 g/m 2 , and more preferably 20 to 35 g/m 2 . If the basis weight is too small, while the strength is ensured, the fabric may be too thin to make the user to feel easy. Conversely, if the basis weight is too large, the fabric may become stiff, which makes wearing feeling uncomfortable.
  • the absorber 4 serves to absorb and retain fluid such as urine or menstrual blood and has high volume, hardly loses its shape and is less of a chemical stimulant.
  • An example of the absorber includes an absorber comprising fluff pulp or an air-laid nonwoven fabric and a super-absorbent polymer (SAP) .
  • SAP super-absorbent polymer
  • Chemical pulps, cellulose fibers, artificial cellulose fibers such as rayon and acetate, and the like can be used instead of fluff pulp.
  • an absorbent fiber such as pulp has a basis weight of 100 to 800 g/m 2 and an amount of the super-absorbent polymer is 30 to 65 parts by weight based on 100 parts by weight of absorbent fiber.
  • a preferable basis weight of the material is 12 to 30 g/m 2 .
  • An example of the air-laid nonwoven fabric includes a nonwoven fabric in which pulp and a synthetic fiber are thermally fused together or fixedly bonded together by a binder.
  • the super-absorbent polymer has a three-dimensional network structure in which water-soluble macromolecules are appropriately cross-linked together, and absorbs water in the weight of 30 to 60 times as much as the weight of the super-absorbent polymer itself.
  • the super- absorbent polymer is basically water-insoluble and does not release once absorbed water even if more or less pressure is applied.
  • the super-absorbent polymer include particulate or fibrous polymers based on starch, acrylic acid, or amino acid.
  • the shape and structure of the absorber can be changed as required, although an entire absorption amount of the absorber needs to correspond to a designed insertion amount and an intended purpose for use as the absorbent article.
  • the size, absorption capacity and the like of the absorber will be changed according to its purpose.
  • the absorber 4 may be composed of two layers, which are an upper absorber layer and a lower absorber layer.
  • the upper absorber layer may be made of a hydrophilic sheet and a super-absorbent polymer.
  • the hydrophilic sheet is a sheet having hydrophilic properties, which is made of a nonwoven fabric, a porous plastic sheet, or the like. In the case of a nonwoven fabric, a porous plastic sheet, or the like, hydrophilic treatment is performed as required. Examples of the nonwoven fabric to be used include spunlaced, spunbonded, thermobonded, meltblown, needlepunched, and air-through nonwoven fabrics.
  • material fiber forming the nonwoven fabric examples include polyolefin-based synthetic fibers such as
  • the upper absorber layer is formed in a sheet form by distributing a super-absorbent polymer in a predetermined pattern on one side of a hydrophilic sheet, laminating another hydrophilic sheet thereon in a manner to sandwich the super-absorbent polymer, and bonding them by using a bonding means (such as a heat seal using hot-melt adhesive) at points where the super-absorbent polymer is not distributed.
  • a bonding means such as a heat seal using hot-melt adhesive
  • the super-absorbent polymer is preferably fixed to the hydrophilic sheet by an adhesive agent such as a hot-melt adhesive, although the polymer can be present as it is as a crushed substance, without being fixed, while being covered with the hydrophilic sheet.
  • the hydrophilic sheet sandwiching the super-absorbent polymer may be' formed by folding back a single hydrophilic sheet and bonding together or by sandwiching a super-absorbent polymer between two hydrophilic sheets whose upper and lower sheets are the same or different and bonding them together.
  • an end portion and an edge of the hydrophilic sheet may be formed by folding them back toward the center of the sheet. Even if body pressure is
  • the lower absorber layer can be made of an absorbent material suitable for use as an absorber main body in absorbent articles such as incontinence pads, sanitary napkins, and disposable diapers.
  • a typical absorbent material suitable for use as an absorber main body in absorbent articles such as incontinence pads, sanitary napkins, and disposable diapers.
  • Bonding points between the wings 7 and the absorbent main body 5 are not specifically limited.
  • the wings 7 may be bonded by being sandwiched between the top sheet 2 and the back sheet 3 or may be bonded to the backside of the absorbent main body 5, namely, to an exposed surface of the back sheet 3.
  • the back sheet 3 includes a non-woven fabric to which the wings 7 are bonded, the non-woven fabric preferably has fiber
  • the wings 7 are bonded to a side of the back sheet opposing the top sheet. Since the bonding side is the side of the back sheet 3 opposing a skin surface, a side of the back sheet 3 facing the undergarment can be maintained in a smooth condition. Therefore, the fixing adhesive portion can be stably arranged on the back sheet 3. Thus, the fixing adhesive agent hardly transfers to the
  • the shape of the wings is not specifically limited.
  • Examples of the shape of the wings include a rectangle, a trapezoid, a reversed trapezoid, a semi-circle, a semi- ellipse, and a ⁇ shape. Among them, preferable is a shape in which roots of the wings are constricted.
  • the roots of the wings refer to portions near side edges of the absorbent main body.
  • a size of the portion of the wing near the side edge of the absorbent main body in the longitudinal direction Y of the absorbent main body is smaller than a size of a portion of the wing distant from the side edge of the absorbent main body in the longitudinal direction Y of the absorbent main body.
  • Fig. -4 shows one example of a wing whose root is constricted.
  • the shape shown in Fig. 4 is formed by rounding off the corners of a figure obtained from two different-sized rectangles connected by an isosceles trapezoid. Although sizes of respective portions of the shape depend also on ⁇ an entire size of the absorbent article, L 2 is preferably 30 to 100 mm, and more
  • L 3 is preferably 40 to 90% of L 2 , and more preferably 50 to 80% of L 2 .
  • W 2 is preferably 5 to 55 mm, and more preferably 20 to 40 mm.
  • W 3 is preferably. 10 to 60% of 2 , and more preferably 20 to 50% of W 2 .
  • W 4 is preferably 1 to 50% of 2, and more preferably 5 to 30% of 2 .
  • W 5 is preferably 30 to 80% of W 2 , and more preferably 40 to 70% of W 2 .
  • Radius of curvature Ri is preferably 1 to 30 mm, and more preferably 2 to 15 mm.
  • Radius of curvature R 2 is preferably 1 to 30 mm, and more preferably 2 to 15 mm.
  • Radius of curvature R 3 is preferably 1 to 30 mm, and more preferably 2 to 15 mm.
  • the shape of the absorbent main body 5 is not specifically limited as long as it is a shape conforming to the shapes of the human body and/or undergarment , and may be rectangular, elliptic, gourd-like, or the like. Its total outline size is in one specific embodiment, in the longitudinal direction, preferably 100 to 500 mm and more preferably 150 to 350 mm, and in the transverse direction, preferably 30 to 200 mm and more preferably 40 to 180 mm.
  • the absorbent article can be manufactured by
  • the wings may be bonded to the back sheet via an adhesive, and the top sheet also may be bonded to the back sheet via an
  • the method for the absorbent article is not limited to the above method.
  • the present invention is also defined by way of the following non-limiting features Ul to U16, which are not specific to the detailed embodiments described above.
  • An absorbent article comprising:
  • the absorbent main body comprises a fluid-permeable top sheet, a fluid-impermeable back sheet, and a fluid- retaining absorber interposed between the top sheet and the back sheet;
  • the top sheet and the wings are made of separate nonwoven fabrics
  • an extension direction of the plurality of streaks of the fixing adhesive portions provided on the backside of the absorbent main ' body coincides with the direction of the fiber alignment in the top sheet
  • an extension direction of the plurality of streaks of the fixing adhesive portions provided on the backside of each wing coincides with the direction of the fiber alignment in the wing.
  • the absorbent article according to Ul, wherein the nonwoven fabric forming the wings has a basis weight of 15 to 40 g/m 2 .
  • an extension direction of the fixing adhesive portion on the backside of the absorbent main body coincides with the direction of the fiber alignment in the top sheet
  • an extension direction of the fixing adhesive portion on the backside of each wing coincides with the direction of the fiber alignment in the wing.
  • An absorbent article comprising:
  • the absorbent main body comprises a fluid-permeable top sheet, a fluid-impermeable back sheet, and a fluid- retaining absorber interposed between the top sheet and the back sheet;
  • the wings are made of a nonwoven fabric
  • fiber alignment in the wings is in a transverse direction of the absorbent main body.
  • each wing ' coincides with the direction of the fiber alignment in the wing.
  • An absorbent article comprising an absorbent body and a pair of wings extending from both side edges of the absorbent main body, wherein the absorbent main body comprises a fluid-permeable top sheet, a fluid- impermeable back sheet, and a fluid-retaining absorber interposed between the top sheet and the back sheet, characterized in that the top sheet and the wings are made of separate nonwoven fabrics; and fiber alignment in the top sheet is in a longitudinal direction of the absorbent main body, whereas fiber alignment in the wings is in a transverse direction of the absorbent main body.
  • absorbent main body coincides with the direction of the fiber alignment in the top sheet, whereas an extension direction of the plurality of streaks of the fixing adhesive portions provided on the backside of the wing coincides with the direction of the fiber alignment in the wing.
  • the absorbent article according to C6, wherein the nonwoven fabric forming the wings has a basis weight of 20 to 35 g/m 2 .
  • a method for manufacturing an absorbent article comprising a step for stacking a piece of a nonwoven fabric for a pair of wings, an absorber, and a nonwoven fabric for a top sheet successively on a
  • nonwoven fabric for a back sheet wherein the nonwoven fabric for the wings is stacked such that fiber alignment in the wings is in a transverse direction of the
  • the nonwoven fabric for the top sheet is stacked such that fiber alignment in the top sheet is in a longitudinal direction of the absorbent article.
  • the absorbent article according to some embodiments of the present invention can be used as an incontinence pad, a sanitary napkin, a panty liner, and the like, and in particular can be suitably used as a mild incontinence pad. Mild incontinence pads are often used for longer hours compared to sanitary napkins and are thus
  • the absorbent article in accordance with some embodiments of the present invention can be stably fixed to the undergarment for long hours, and therefore is particularly useful as a mild incontinence pad.

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  • 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

Dans un article absorbant pourvu de rabats, tel qu'une serviette pour incontinence ou une serviette hygiénique fixée à une partie d'entrejambe d'un sous-vêtement, les rabats peuvent avoir un faible poids de base, ce qui permet de réduire la gêne lorsque l'article est porté. L'article absorbant comprend un corps principal absorbant et une paire de rabats s'étendant depuis les deux bords latéraux du corps principal absorbant. Le corps principal absorbant comprend une feuille supérieure perméable au fluide, une feuille arrière imperméable au fluide et un élément absorbant retenant le fluide. La feuille supérieure et les rabats sont fabriqués dans des tissus non tissés séparés. L'alignement des fibres de la feuille supérieure est dans un sens longitudinal, alors que l'alignement des fibres dans les rabats est dans le sens transversal. Sur une face arrière du corps principal absorbant et sur une face arrière de chaque rabat sont respectivement formés une pluralité de sillons de portions adhésives de fixation. Le sens de l'extension des portions adhésives de fixation coïncide avec le sens de l'alignement des fibres.
PCT/JP2012/051908 2011-02-01 2012-01-24 Article absorbant Ceased WO2012105463A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2011020146A JP5693267B2 (ja) 2011-02-01 2011-02-01 吸収性物品
JP2011-020146 2011-02-01
JP2011021026A JP2012157641A (ja) 2011-02-02 2011-02-02 吸収性物品
JP2011-021026 2011-02-02

Publications (1)

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WO2012105463A1 true WO2012105463A1 (fr) 2012-08-09

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PCT/JP2012/051909 Ceased WO2012105464A1 (fr) 2011-02-01 2012-01-24 Article absorbant
PCT/JP2012/051908 Ceased WO2012105463A1 (fr) 2011-02-01 2012-01-24 Article absorbant

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WO (2) WO2012105464A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007521932A (ja) * 2004-02-18 2007-08-09 ザ プロクター アンド ギャンブル カンパニー 波形化領域を有するウィングを備えた使い捨て吸収性物品及びその製造方法
WO2008146737A1 (fr) * 2007-05-24 2008-12-04 Uni-Charm Corporation Article absorbant
JP4372628B2 (ja) * 2003-07-15 2009-11-25 花王株式会社 吸収性物品
JP2010188142A (ja) * 2010-03-29 2010-09-02 Daio Paper Corp 吸収性物品の製造方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2019282C (fr) * 1990-03-12 2001-02-20 Thomas Peter Van Iten Article absorbant muni d'un fermoir et methode pour fixer ledit article sur un vetement
CA2167376C (fr) * 1993-07-22 2000-02-29 John Lee Hammons Articles absorbants avec elements recouvrant automatiquement les cotes d'un sous-vetement
US6176850B1 (en) * 1998-06-24 2001-01-23 Mcneil-Ppc. Inc. Adhesive patterns for feminine articles
JP5154143B2 (ja) * 2006-06-02 2013-02-27 ユニ・チャーム株式会社 吸収性物品

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4372628B2 (ja) * 2003-07-15 2009-11-25 花王株式会社 吸収性物品
JP2007521932A (ja) * 2004-02-18 2007-08-09 ザ プロクター アンド ギャンブル カンパニー 波形化領域を有するウィングを備えた使い捨て吸収性物品及びその製造方法
WO2008146737A1 (fr) * 2007-05-24 2008-12-04 Uni-Charm Corporation Article absorbant
JP2010188142A (ja) * 2010-03-29 2010-09-02 Daio Paper Corp 吸収性物品の製造方法

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