WO2010074205A1 - Feuille superficielle pour article absorbant - Google Patents

Feuille superficielle pour article absorbant Download PDF

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Publication number
WO2010074205A1
WO2010074205A1 PCT/JP2009/071549 JP2009071549W WO2010074205A1 WO 2010074205 A1 WO2010074205 A1 WO 2010074205A1 JP 2009071549 W JP2009071549 W JP 2009071549W WO 2010074205 A1 WO2010074205 A1 WO 2010074205A1
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WO
WIPO (PCT)
Prior art keywords
fiber
linear
heat
embossing
absorbent article
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PCT/JP2009/071549
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English (en)
Japanese (ja)
Inventor
由佳 林
泰生 豊島
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花王株式会社
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Application filed by 花王株式会社 filed Critical 花王株式会社
Priority to CN2009801498651A priority Critical patent/CN102245141A/zh
Publication of WO2010074205A1 publication Critical patent/WO2010074205A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—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
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/513—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its function or properties, e.g. stretchability, breathability, rewet, visual effect; having areas of different permeability
    • A61F13/51305—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its function or properties, e.g. stretchability, breathability, rewet, visual effect; having areas of different permeability having areas of different permeability

Definitions

  • the present invention relates to a surface sheet of an absorbent article.
  • a surface sheet of an absorbent article such as a sanitary napkin or a disposable diaper
  • a nonwoven fabric or one made of a perforated film in which a three-dimensional aperture is formed in a resin film has been widely used.
  • the surface sheet made of non-woven fabric can draw liquid between fibers by capillary action and has good absorbability, while the drawn liquid tends to stay in the sheet and when pressure is applied to the skin of the wearer It is easy to give a wet feeling to the wearer.
  • the surface sheet made of a perforated film in which three-dimensional apertures are formed is excellent in liquid permeability and difficult to give a wet feeling to the wearer's skin, while inferior in liquid absorbency in the direction against gravity, For example, the liquid may move along the skin while sleeping, leading to leakage.
  • the surface layer of the absorbent article is a surface layer composed of a large number of continuous filaments of thermoplastic synthetic resin extending in parallel in one direction, and the joining sites of the filaments are intermittently arranged in the one direction.
  • the base material and the continuous filament layer are joined by a plurality of joint portions having a base material and a continuous filament layer and spaced in the extending direction of the continuous filament, and between the joint portion and the joint portion.
  • a continuous filament raised in a loop shape is known (see Patent Document 2).
  • these are arranged in parallel over the entire length including the gap between the joints, they are inferior in strength as a non-woven fabric, and concealment performance of liquid such as menstrual blood Also inferior.
  • the present invention relates to a surface sheet of an absorbent article having excellent liquid drawability and liquid permeability.
  • the top sheet of the absorbent article of the present invention has a concave portion and a convex portion on the skin contact surface side, and the constituent fibers include heat-extensible fibers.
  • the concave portion is formed by linear embossing, and the fibers in the non-embossed region adjacent to the linear embossing (wrinkles) are generally aligned in a direction intersecting the embossing linear direction. ing.
  • the absorbent article of the present invention comprises a top sheet that forms a skin contact surface, a back sheet that forms a non-skin contact surface, and an absorbent body interposed between the two sheets. It is a surface sheet.
  • FIG. 1 is a perspective view showing an embodiment of a surface sheet of an absorbent article of the present invention.
  • FIG. 2 is an enlarged plan view showing a part on the skin contact surface side of the top sheet shown in FIG. 3 is a schematic cross-sectional view showing a cross section taken along line III-III of the top sheet shown in FIG.
  • FIG. 4 is a photomicrograph of the linear embossing and the fiber parallel standing portion adjacent to the linear embossing as viewed from the skin contact surface side of the top sheet.
  • FIG. 5 is a cross-sectional view showing a state in which the topsheet shown in FIG. 1 is arranged on an absorbent body of an absorbent article such as a sanitary napkin.
  • FIG. 1 is a perspective view showing an embodiment of a surface sheet of an absorbent article of the present invention.
  • FIG. 2 is an enlarged plan view showing a part on the skin contact surface side of the top sheet shown in FIG. 3 is a schematic cross-sectional view showing a cross section taken
  • FIG. 6 is a schematic diagram illustrating some examples in the case where individual partition regions or a plurality of types of partition regions have a dimensional ratio of golden ratio or silver ratio.
  • FIG. 7 is a schematic explanatory diagram of a method for producing the topsheet shown in FIG.
  • FIG. 8 is a cross-sectional view showing another embodiment of the top sheet of the present invention.
  • FIG. 9 is a plan view of an embodiment of the absorbent article of the present invention as viewed from the top sheet side. 10 is a cross-sectional view taken along line XX of FIG.
  • FIG. 1 is a perspective view showing an embodiment of a surface sheet of an absorbent article of the present invention.
  • the topsheet 2 in the present embodiment is made of a single-layered nonwoven fabric, and has linear embosses 21 in which constituent fibers are integrated by thermal fusion in a lattice shape.
  • the line shape is not limited to a straight line in plan view, but includes a curved line. Each line may be a continuous line or a broken line, but an embossed shape in which points such as a circle are formed intermittently. Is not included.
  • the top sheet 2 has a plurality of first linear embosses 21 a formed in parallel with each other at predetermined intervals as linear embosses 21.
  • a plurality of second linear embosses 21b formed in parallel and at predetermined intervals, and the first linear emboss 21a and the second linear emboss 21b form an angle ⁇ with each other.
  • the width W1 of the first linear emboss 21a and the width of the second linear emboss 21b are the same, and the interval W2 between the first linear embosses 21a and the interval between the second linear embosses 21b are also the same. The same.
  • the width W1 (only one is shown) of the first and second linear embosses 21a and 21b is 0.1 to 1.5 mm, particularly 0.3 to 0, in order to securely fix the fibers in the linear embosses. It is preferable that the distance W2 between the first linear embosses 21a and the distance between the second linear embosses 21b are 2 to 14 mm so that a fiber parallel standing portion described later can be easily formed. In particular, the thickness is preferably 2 to 8 mm.
  • W1 and W2 are measured in a direction perpendicular to the line. The width of the line may change from the intersection, but W1 is measured at the intersection and the midpoint of the intersection. W2 is measured by a line connecting opposite sides of the partition region 22. The X direction in FIGS.
  • the sheet flow direction (MD) at the time of manufacturing the surface sheet is the same as the sheet flow direction (MD) at the time of manufacturing the surface sheet, and coincides with the longitudinal direction of the napkin 1 when incorporated in a sanitary napkin 1 described later.
  • the direction is the same.
  • the Y direction in FIGS. 1 and 2 is the same as the direction (CD) perpendicular to the flow direction of the sheet at the time of manufacturing the top sheet, and the width direction of the napkin 1 when incorporated in a sanitary napkin 1 described later.
  • the direction to be matched is also the same direction.
  • the surface sheet 2 has a recess 20 formed by hot embossing on the surface (skin contact surface 2a) side that is directed to the wearer's skin when incorporated in the absorbent article.
  • 20 has the linear emboss 21 described above. Since the linear emboss 21 is formed in a lattice shape as described above, the top sheet 2 is formed with partitioned regions 22, 22... Partitioned by the linear emboss 21.
  • Each partition area 22 is an area surrounded by a linear emboss 21 and has a rhombus shape in plan view. The central portion of each partition region 22 is raised relative to the concave portion 20 surrounding the partition region 22 to form a convex portion 23.
  • the linear emboss 21 in the surface sheet 2 of the present embodiment is formed by subjecting a fiber web formed by a card method to hot embossing.
  • the linear emboss 21 can be formed by high frequency embossing or ultrasonic embossing.
  • the heat-fusible fibers which are constituent fibers of the top sheet 2 or the non-woven fabric constituting the top sheet 2, are integrated by heat-sealing.
  • the heat-fusible component is melted and the fiber form is not maintained.
  • the surface sheet 2 of the present embodiment includes a heat-extensible fiber as a constituent fiber.
  • the heat-extensible fiber is preferably a heat-fusible fiber.
  • the heat-fusible fiber as the heat-extensible fiber is preferably a composite fiber composed of a heat-fusible component and a high-melting-point component having a higher melting point than the heat-fusible component, and more preferably, the heat-fusible component is a sheath.
  • a core-sheath type composite fiber having a high melting point component as a core is used.
  • the heat fusion component and the high melting point component are preferably thermoplastic resins.
  • Examples of the heat fusion component include polyethylene, polypropylene, polybutene-1, polypentene-1, or a random or block copolymer thereof.
  • Examples of the high melting point component include polyesters such as polyethylene terephthalate and polybutylene terephthalate, polyamides such as nylon-6 and nylon-66, and the like.
  • Preferred combinations of the heat fusion component and the high melting point component include polyethylene and polyethylene terephthalate, polyethylene and polypropylene, low melting point polyethylene terephthalate and polyethylene terephthalate, polyethylene and polybutylene terephthalate, etc., but are not limited thereto. Absent.
  • the core-sheath type composite fiber may be a concentric type, an eccentric type, or a fiber having a core component exposed at a part of the entire circumference of the fiber.
  • the heat-fusible fiber is preferably a heat-extensible composite fiber from the viewpoint of the formability of the fiber standing upright part and the formability of the concavo-convex shape described later.
  • the heat-extensible composite fiber is a fiber whose length is extended by heating, and is a fiber that extends at a temperature of 90 ° C. or higher, preferably 110 ° C. to 130 ° C.
  • the heat-extensible conjugate fiber is stretched during the production of the topsheet 2, it is possible to form irregularities with large undulations and to easily generate a fiber parallel upright portion described later. Therefore, after the surface sheet 2 is completed, many of them are in an extended state, and do not mean fibers that are further extended from the state.
  • the heat-extensible composite fiber after extension is also included in the heat-extensible composite fiber.
  • Examples of the heat-stretchable composite fiber include a fiber that changes in the crystalline state of the resin by heating or is stretched, or a fiber that has been crimped and has an apparent length that is released by crimping. .
  • the heat stretchable conjugate fiber has a stretch ratio of 5 to 40, particularly 10 to 30% at a temperature 10 ° C. higher than the softening point of the heat fusion component and 10 ° C. lower than the melting point. And is preferable from the viewpoint of remarkably forming an uneven shape.
  • Preferred examples of the heat-extensible conjugate fiber are described in paragraphs [0024] to [0040] of JP-A-2005-350836.
  • the ratio of the composite fiber composed of the heat fusion component and the high melting point component, particularly the heat-extensible composite fiber is preferably 40 to 100% by mass, more preferably 70 to 100% by mass in the constituent fibers of the surface sheet. More preferably, it is 95 to 100% by mass.
  • fibers to be blended in addition to these composite fibers include fibers made of thermoplastic resins (non-composite fibers).
  • the recess 20 is formed by a linear emboss 21, and is a non-embossed region adjacent to the line (wrinkle) of the linear emboss 21.
  • the fibers 25 are generally aligned in the direction Q intersecting the embossed line direction P.
  • the surface sheet 2 of the present embodiment has constituent fibers (more specifically, heat-extensible composite fibers) in the vicinity of the linear emboss 21. And a fiber parallel upright portion 24 rising in parallel in a direction away from the linear emboss 21.
  • the fiber parallel upright portions 24 are formed adjacent to the first linear emboss 21a and the second linear emboss 21b, respectively.
  • the fiber 25 of each of the fiber parallel standing portions 24 has one end 25 a in the longitudinal direction fixed to the linear emboss 21 by melting the heat-fusible component, and the other end in the longitudinal direction. Is a direction intersecting with the direction P in which the first or second linear embosses 21a, 21b extend, more specifically, in a direction (Q direction) substantially orthogonal to the direction P in the plan view of the top sheet 2. It extends towards.
  • the fibers 25 that form the fiber parallel upright portions 24 are arranged in parallel in the P direction in a plan view of the topsheet 2, and as shown in FIG.
  • the linear emboss 21 It is arranged to stand up from the linear emboss 21.
  • the direction of rising is a direction approaching the wearer's skin when used as a top sheet of an absorbent article.
  • the linear embossing By forming the linear embossing into a linear shape, the heat-extensible fibers extend in parallel from the line.
  • the linear shape is preferably a continuous straight line or curved line. In the case of a broken line, the interval between the lines may not be extremely large, but the interval between the lines is preferably 2 mm or less.
  • the fiber 25 arranged in the fiber parallel upright portion 24 has an extended portion 25b extending beyond the fiber parallel upright portion 24, and these extended portions 25b are non-parallel to the convex portion 23.
  • a fiber joining point (not shown) is formed in the convex portion 23, particularly in the central portion thereof, in which crossed constituent fibers are heat-sealed at each other intersection.
  • the length L (refer to FIGS. 3 and 4) measured along the fibers constituting the surface on the skin contact surface 2a side of the fiber parallel upright portion 24 is preferably 0.5 to 4.0 mm. More preferably, it is 0.5 to 2.0 mm, and still more preferably 0.5 to 1.0 mm.
  • the fiber parallel standing part 24 formed adjacent to the 1st or 2nd linear embossing 21a, 21b is set to 100% when the circumference
  • a straw-like space is formed between the fibers arranged in parallel in the fiber parallel upright portion 24, and the liquid is drawn toward the linear emboss 21 through the space. Further, since the fibers in the vicinity of the linear embossing 21 stand up while extending in the direction intersecting with the direction in which the linear embossing 21 extends, the linear embossing of the liquid that has reached the boundary with the linear embossing 21 is performed. Movement along the direction in which the emboss 21 extends is relatively difficult. Therefore, as shown in FIG. 5, the liquid supplied to the skin contact surface 2 a side of the top sheet 2 smoothly moves to the absorbent body 4 through the fiber parallel upright portions 24, and the liquid is applied to the top sheet 2. The rest is unlikely to occur.
  • the partition region 22 partitioned by the linear emboss 21 is formed, and the fiber parallel upright portion 24 is formed around the partition region 22, so that the movement of the liquid across the partition region 22 is suppressed. Inconvenience such as liquid leakage due to the liquid flowing on the top sheet 2 is unlikely to occur.
  • the topsheet 2 of the present embodiment has a fiber parallel upright portion 24, and has a fiber joining point in which crossed constituent fibers are heat-sealed at each other intersection at the center of the convex portion 23. Therefore, unlike a surface material in which continuous filaments made of tow or thermoplastic fibers are parallel throughout the longitudinal direction, sufficient strength as a sheet or non-woven fabric can be obtained and concealment of colored liquid such as menstrual blood Also excellent in properties.
  • the area of each partition region 22 is preferably 0.25 to 2 cm 2 .
  • the area ratio of the linear emboss 21 is preferably 16% or less, particularly preferably 14% or less because the liquid hardly remains in the surface sheet. If the area ratio of the linear emboss 21 is too high, the convex portion of the sheet is pressed down, and the liquid tends to remain in the surface sheet. Further, the area ratio of the linear emboss 21 is preferably 10% or more, particularly 11% or more from the viewpoint of improving liquid suction. If the area ratio of the linear embossing 21 is too low, the width of the linear embossing becomes narrow and the strength of the linear embossing cannot be secured, so that the liquid sucking property is deteriorated. A method for measuring the area ratio of the linear emboss will be described later in Examples.
  • the surface sheet 2 of this embodiment has a non-woven fabric constituting the surface sheet 2 in a linear shape on the non-skin contact surface side, overlapping with the fiber parallel upright portions 24. It has the fiber parallel part 26 located in a line in the direction away from the embossing 21 of this. By having the fiber parallel part 26 in the part which overlaps with the fiber parallel standing part 24, it is prevented that the liquid drawn in through the fiber parallel standing part 24 stays in the non-skin contact surface vicinity of the surface sheet 2, FIG. As shown, the liquid A moves to the absorber 4 more smoothly.
  • the fiber parallel part 26 contacts the absorbent body 4 substantially in parallel as shown in FIG. 5. It is preferable to arrange so as to. In addition, it is preferable that the fiber parallel part 26 has the same configuration as that of the fiber parallel stand part 24 except that the fiber parallel stand part 26 is not raised.
  • each partitioned area or two types of partitioned areas with different dimensions are formed with a dimensional ratio of golden ratio or white silver ratio.
  • the golden ratio is the most beautiful ratio since ancient times, and the approximate ratio a: b is 9:16, but the golden ratio a: b in the present invention is in the range of 9:15 to 9:17. .
  • the silver ratio is a ratio based on a traditional Japanese wood split and is said to have stable and timeless beauty, and a: b is 1: 1.414.
  • the silver ratio a: b is in the range of 1: 1.3 to 1: 1.5.
  • each section area has a dimensional ratio of golden ratio or white silver ratio
  • the ratio of the diagonal lengths L1 and L2 of the rhombic section area 22 is set to the golden ratio or white silver.
  • the ratio a: b is mentioned.
  • a of golden ratio or silver ratio a: b may be L1, b may be L2, a may be L2, and b may be L1.
  • the length starting from the center of the intersection of 21a (21) and 21b (21) shown in the figure as the starting point / ending point may be the length corresponding to L1 and L2.
  • two types of partitioned areas 22A and 22B having different dimensions and shapes are parallel to each other or on a straight line.
  • the ratio of the lengths of the diagonal lines L3 and L4 that are aligned with each other may be the golden ratio or the silver ratio a: b.
  • a in the golden ratio or silver ratio a: b may be L3, b may be L4, a may be L4, and b may be L3.
  • the diagonal line of each division area as a virtual line which comprises golden ratio or white silver ratio, the line of an absorbent article edge part and side groove embossing play an auxiliary role. Therefore, it is more effective to match the larger ratio in the longitudinal direction of the product.
  • a web 2 ′ serving as a raw sheet of the top sheet 2 is produced using a predetermined web forming means (not shown).
  • the web 2 ′ includes a heat-extensible composite fiber or is made of a heat-extensible composite fiber.
  • the web forming means include (a) a card method in which short fibers are opened using a card machine, and (b) a method in which melt-spun continuous filaments are directly pulled by air soccer and deposited on a net (spunbond). And (c) a known method such as a method (air array method) in which short fibers are transported in an air stream and deposited on a net.
  • the heat embossing device 51 includes a pair of rolls 52 and 53.
  • the roll 52 is a smooth roll having a smooth peripheral surface.
  • the roll 53 is a sculpture roll in which a lattice-like convex portion corresponding to the linear emboss 21 is formed on the peripheral surface thereof.
  • Each of the rolls 52 and 53 can be heated to a predetermined temperature.
  • the heat embossing is performed at a temperature at which the heat-fusible component of the heat-extensible composite fiber in the web 2 'melts.
  • the processing temperature of the heat embossing is preferably performed at a temperature that is equal to or higher than the melting point of the heat-fusible component in the heat-extensible composite fiber in the web 2 'and lower than the melting point of the high-melting point component.
  • the nonwoven fabric 54 which has the linear embossing 21 is obtained by heat embossing. Subsequently, the nonwoven fabric 54 is conveyed to the hot air spraying device 55. In the hot air spraying device 55, the nonwoven fabric 54 is subjected to air-through processing.
  • the hot air blowing device 55 is configured such that hot air heated to a predetermined temperature penetrates the nonwoven fabric 54.
  • the air-through process is performed at a temperature at which the heat-extensible composite fiber in the nonwoven fabric 54 is elongated by heating. And it is performed at a temperature at which the intersections of the heat-extensible composite fibers in a free state existing in the non-woven fabric 54 other than the linear emboss 21 are thermally fused.
  • the temperature is lower than the melting point of the high melting point component of the heat-extensible conjugate fiber.
  • the heat-extensible conjugate fiber contained in the nonwoven fabric 54 is stretched at portions other than the linear emboss 21. Since a part of the thermally stretchable conjugate fiber is fixed by the linear emboss 21, it is the portion between the linear embosses 21 that extends. Since a part of the thermally stretchable conjugate fiber is fixed by the linear emboss 21, the stretched portion of the stretched thermally stretchable conjugate fiber loses its place in the plane direction of the non-woven fabric 54, so The heat stretchable conjugate fiber on the hot air blowing side moves in the thickness direction of the nonwoven fabric 54.
  • a fiber parallel upright portion 24 is formed in the vicinity of the linear emboss 21, and a convex portion 23 is formed at the center of the partition region surrounded by the linear emboss 21. Further, the intersections of the heat-extensible composite fibers existing between the linear embosses 21 are joined by heat fusion by air-through processing, and the fiber joining points are formed in a three-dimensionally dispersed state on the convex portion 23. . In this way, the target surface sheet 2 is obtained.
  • FIG. 8 is a view showing another embodiment of the top sheet of the absorbent article of the present invention.
  • the top sheet 2A shown in FIG. 8 has a two-layer structure in which an upper layer 27 and a lower layer 28 are laminated.
  • the top sheet 2A has the upper layer 27 side facing the wearer's skin and the lower layer 28 side is absorbed. Used by being incorporated into an absorbent article toward the body side.
  • the upper layer 27 is made of the heat-extensible conjugate fiber described above or includes the heat-extensible conjugate fiber, and the lower layer 28 does not contain the heat-extensible conjugate fiber or is smaller in amount than the upper layer 27.
  • the upper layer 27 and the lower layer 28 are joined by a lattice-like joint formed by embossing, and the joint becomes the linear emboss 21 in the topsheet 2A.
  • a fiber parallel standing portion 24 similar to the fiber parallel standing portion of the top sheet 2 described above is formed adjacent to the linear emboss 21.
  • a heat fusion point 29 is formed in which the heat-extensible conjugate fibers are heat-sealed at each other intersection. Since the topsheet 2A also has the fiber parallel upright portions 24, the same function and effect as the topsheet 2 is achieved.
  • the lower layer 28 constituting the non-skin contact surface side of the surface sheet 2A is more rigid than the constituent fibers of the upper layer 27. It is preferable to use a high fiber.
  • the highly rigid fiber is a fiber having a higher melting point or higher resin density than the fiber used on the skin contact surface side.
  • the top sheet of the absorbent article of the present invention is used as the top sheet of the absorbent article.
  • the absorbent article is mainly used for absorbing and holding excretory body fluids such as urine and menstrual blood.
  • Absorbent articles include, for example, disposable diapers, sanitary napkins, incontinence pads, and the like, but are not limited to these, and widely include articles used to absorb liquid discharged from the human body.
  • the absorbent article typically includes a top sheet, a back sheet, and a liquid-retaining absorbent body disposed between both sheets.
  • Absorbent articles generally have a skin contact surface that contacts the wearer's skin when worn and a non-skin contact surface directed to the opposite side (usually clothing side such as shorts).
  • the back sheet is disposed on the skin contact surface side, and the back sheet is disposed on the non-skin contact surface side.
  • the surface sheet in this invention is distribute
  • FIGS. 9 and 10 are views showing a sanitary napkin 1 using the topsheet 2 of the above-described embodiment as a topsheet.
  • the surface sheet 2 in the sanitary napkin 1 is formed with the lattice-like linear emboss 21 described above over the entire area. More specifically, the first and second linear embosses 21 a and 21 b described above draw a large number of lines from one side 11 in the longitudinal direction of the sanitary napkin 1 to the other side 12. Furthermore, it is formed over the entire length between both end portions in the napkin width direction.
  • the linear emboss 21 is formed so as to draw a large number of lines from one side 11 in the longitudinal direction of the sanitary napkin 1 to the other side 12, the width direction of the sanitary napkin 1 It is possible to prevent wrinkles from being generated with respect to the deformation pressure.
  • the surface sheet 2 used for the sanitary napkin 1 has a fiber orientation in which the fibers in the vicinity of the linear emboss 21 are difficult to bleed, so that the embossed portion (linear emboss 21) is liquid. Such an anti-wrinkle effect can be obtained while preventing bleeding and side leakage.
  • the sanitary napkin 1 is a side composed of a top sheet 2 and a back sheet 3 that extend outward from the side edges 41 in the longitudinal direction of the absorbent body 4 on both sides in the longitudinal direction. It has a flap part 13.
  • the topsheet 2 also has the above-described partition region 22 at a portion extending outward from the side edge 41 of the absorber. Since the portion of the topsheet 2 having the partition region 22 and the above-described fiber side-upstanding portion 24 is less likely to diffuse the liquid as compared to the case where the topsheet 2 does not have them, the partition region 22 of the topsheet 2 is formed on the side flap portion 13.
  • the sanitary napkin which is excellent in the side leakage prevention property without providing a leakproof sheet, a three-dimensional guard, etc. which cover the side part of the surface sheet 2 by providing the part which has.
  • reference numeral 14 denotes an adhesive.
  • the absorbent body 4 and the back sheet 3 of the sanitary napkin 1 materials usually used in the technical field can be used without particular limitation.
  • a fiber assembly made of a fiber material such as pulp fiber or a fiber assembly in which an absorbent polymer is held can be coated with a covering sheet such as tissue paper or nonwoven fabric.
  • a liquid-impermeable or water-repellent sheet such as a thermoplastic resin film or a laminate of the film and a nonwoven fabric can be used.
  • the back sheet may have water vapor permeability.
  • the surface sheet and absorbent article of this invention are not restrict
  • the planar view shape of the partition region is not limited to a rhombus shape, and may be an arbitrary shape such as a square, a rectangle, a parallelogram, an ellipse, or a triangle.
  • a plurality of types of partition regions having different shapes in plan view can be provided on one surface sheet, for example, by combining diamond-shaped partition regions and parallelogram-shaped partition regions.
  • the absorbent article may include various members in accordance with the specific use of the absorbent article, in addition to the top sheet, the absorber, and the back sheet. Such members are known to those skilled in the art. For example, when applying an absorbent article to a disposable diaper or a sanitary napkin, a pair or two or more pairs of three-dimensional guards can be disposed on the left and right sides of the topsheet.
  • Example 1 A core-sheath type composite fiber (core: polypropylene, sheath: polyethylene) having a fiber diameter of 4 dtex and an elongation of 8% is passed through a card machine to form a web, and the web is introduced into a heat embossing device. Formed. Subsequently, the web was introduced into a hot air spraying apparatus, and hot air treatment was performed by air-through processing to obtain a surface sheet having a fiber parallel standing portion in the vicinity of the linear embossing. The linear embossing formation pattern of the obtained surface sheet is the pattern shown in FIG.
  • the width W1 of each of the first and second linear embosses 21a and 21b is 0.5 mm, and the first linear embossing is performed.
  • the distance between 21a and the distance W2 between the second linear embosses 21b were 6 mm, and the ratio of the diagonal lines L1 and L2 (L1: L2) of the formed rhombic partition region was 7:13.
  • the area ratio of the linear embossing was 14%.
  • Example 2 A surface sheet was obtained in the same manner as in Example 1 except that the width W2 and the ratio (L1: L2) were changed to 7.5 mm and 9:13 in this order.
  • the obtained surface sheet had an area ratio of linear embossment of 11%.
  • Example 3 In Example 1 described above, two types of fibers were used (core-sheath type composite fiber with a fiber diameter of 4 dtex (core is polypropylene, sheath is polyethylene) at a weight ratio of 50%, and a core-sheath type composite with a fiber diameter of 3.3 dtex. Fiber (with polyethylene terephthalate as the core and polyethylene as the sheath) at a weight ratio of 50%), each fiber is passed through a card machine to form a web, the web is overlaid, introduced into a heat embossing device, and linear on the web Formed an emboss.
  • Example 4 In Example 3 described above, the two types of fibers used were mixed and then passed through a card machine to form a web, and the web was introduced into a heat embossing device to form a linear emboss on the web.
  • the area ratio of the linear emboss 21 is 14% or less from the viewpoint of the remaining liquid amount that leads to an apparent dry feeling, and 11% or more from the viewpoint of the residual amount of wicking that leads to skin wetness. More preferred.
  • the surface sheet of the absorbent article of the present invention is excellent in liquid drawability and liquid permeability.

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  • 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

L'invention concerne une feuille superficielle (2) pour un article absorbant, cette feuille comportant des parties creuses (20) et des parties saillantes sur le côté en contact avec la peau, et dont les fibres constituantes contiennent des fibres extensibles à la chaleur. Les parties creuses (20) sont constituées de reliefs linéaires (21); et les fibres (25) présentent dans les zones sans relief (24) adjacentes au bord de chacun des reliefs linéaires (21) sont orientées d'une manière quasi régulière dans une direction (Q) qui croise la direction de la ligne du relief dans les bords. Il est préférable que la feuille superficielle (2) comporte, dans les parties saillantes, des points d'assemblage par fusion qui sont chacun formés par des fibres constituantes d'assemblage par fusion s'entrecroisant au niveau du point d'intersection.
PCT/JP2009/071549 2008-12-25 2009-12-25 Feuille superficielle pour article absorbant WO2010074205A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009801498651A CN102245141A (zh) 2008-12-25 2009-12-25 吸收性物品的正面片材

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008331374A JP2010148730A (ja) 2008-12-25 2008-12-25 吸収性物品の表面シート
JP2008-331374 2008-12-25

Publications (1)

Publication Number Publication Date
WO2010074205A1 true WO2010074205A1 (fr) 2010-07-01

Family

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PCT/JP2009/071549 WO2010074205A1 (fr) 2008-12-25 2009-12-25 Feuille superficielle pour article absorbant

Country Status (4)

Country Link
JP (1) JP2010148730A (fr)
CN (1) CN102245141A (fr)
TW (1) TW201029634A (fr)
WO (1) WO2010074205A1 (fr)

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Publication number Priority date Publication date Assignee Title
JP2011137262A (ja) * 2009-12-28 2011-07-14 Kao Corp 立体賦形不織布
US9327473B2 (en) 2012-10-31 2016-05-03 Kimberly-Clark Worldwide, Inc. Fluid-entangled laminate webs having hollow projections and a process and apparatus for making the same
US9474660B2 (en) 2012-10-31 2016-10-25 Kimberly-Clark Worldwide, Inc. Absorbent article with a fluid-entangled body facing material including a plurality of hollow projections
US9480608B2 (en) 2012-10-31 2016-11-01 Kimberly-Clark Worldwide, Inc. Absorbent article with a fluid-entangled body facing material including a plurality of hollow projections
US9480609B2 (en) 2012-10-31 2016-11-01 Kimberly-Clark Worldwide, Inc. Absorbent article with a fluid-entangled body facing material including a plurality of hollow projections
US10045889B2 (en) 2014-09-12 2018-08-14 The Procter & Gamble Company Nonwoven material having discrete three-dimensional deformations with wide base openings and specific fiber concentrations
US10064766B2 (en) 2014-09-12 2018-09-04 The Procter & Gamble Company Nonwoven material having discrete three-dimensional deformations that are configured to collapse in a controlled manner
US10070999B2 (en) 2012-10-31 2018-09-11 Kimberly-Clark Worldwide, Inc. Absorbent article
US10076898B2 (en) 2014-09-12 2018-09-18 The Procter & Gamble Company Apparatus having forming members with surface texture for making nonwoven material having discrete three-dimensional deformations with wide base openings
US10226385B2 (en) 2014-09-12 2019-03-12 The Procter & Gamble Company Process for making an absorbent article comprising a topsheet/acquisition layer laminate
US10610423B2 (en) 2016-03-08 2020-04-07 The Procter & Gamble Company Absorbent article comprising a topsheet/acquisition web laminate
US11007093B2 (en) 2017-03-30 2021-05-18 Kimberly-Clark Worldwide, Inc. Incorporation of apertured area into an absorbent article
US11365495B2 (en) 2017-02-28 2022-06-21 Kimberly-Clark Worldwide, Inc. Process for making fluid-entangled laminate webs with hollow projections and apertures
US11696856B2 (en) 2017-03-09 2023-07-11 The Procter & Gamble Comoany Three-dimensional materials having apertures and voids
US12029633B2 (en) 2022-10-05 2024-07-09 Kimberly-Clark Worldwide, Inc. Absorbent article with a fluid entangled body facing material including a plurality of projections

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JP5268662B2 (ja) * 2009-01-09 2013-08-21 花王株式会社 吸収性物品の表面シート
JP5688265B2 (ja) * 2010-10-25 2015-03-25 花王株式会社 吸収性物品
JP2012090689A (ja) * 2010-10-25 2012-05-17 Kao Corp 吸収性物品
JP5792997B2 (ja) * 2011-05-20 2015-10-14 花王株式会社 吸収性物品
JP5867152B2 (ja) * 2012-02-22 2016-02-24 王子ホールディングス株式会社 吸収性物品の製造方法
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JP6338850B2 (ja) * 2013-12-12 2018-06-06 花王株式会社 吸収性物品
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JP6310294B2 (ja) * 2014-03-27 2018-04-11 花王株式会社 吸収性物品用の表面シート
JP6431875B2 (ja) * 2016-06-30 2018-11-28 ユニ・チャーム株式会社 使い捨ておむつ
JP6507282B1 (ja) * 2018-03-19 2019-04-24 大王製紙株式会社 吸収性物品の製造方法
JP7049965B2 (ja) * 2018-08-29 2022-04-07 大王製紙株式会社 脇用汗取りパッド
CN111150558B (zh) * 2018-11-08 2022-11-29 尤妮佳股份有限公司 吸收性物品
JP7254690B2 (ja) * 2019-12-26 2023-04-10 ユニ・チャーム株式会社 吸収性物品

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002187228A (ja) * 2000-10-12 2002-07-02 Kao Corp 立体シート材料
JP2003250836A (ja) * 2001-12-28 2003-09-09 Kao Corp 吸収性物品用の表面シート
JP2006175689A (ja) * 2004-12-22 2006-07-06 Kao Corp 立体シート
JP2007130800A (ja) * 2005-11-08 2007-05-31 Kao Corp 凹凸構造体の製造方法
JP2008161302A (ja) * 2006-12-27 2008-07-17 Kao Corp 吸収性物品用の表面シート及びその製造方法
JP2008161526A (ja) * 2006-12-28 2008-07-17 Kao Corp 吸収性物品用の表面シート

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3564246B2 (ja) * 1996-11-22 2004-09-08 ユニ・チャーム株式会社 使い捨て体液吸収性物品の表面層
JP4108050B2 (ja) * 2004-03-01 2008-06-25 花王株式会社 立体シート
JP3989468B2 (ja) * 2004-06-14 2007-10-10 花王株式会社 立体賦形不織布

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002187228A (ja) * 2000-10-12 2002-07-02 Kao Corp 立体シート材料
JP2003250836A (ja) * 2001-12-28 2003-09-09 Kao Corp 吸収性物品用の表面シート
JP2006175689A (ja) * 2004-12-22 2006-07-06 Kao Corp 立体シート
JP2007130800A (ja) * 2005-11-08 2007-05-31 Kao Corp 凹凸構造体の製造方法
JP2008161302A (ja) * 2006-12-27 2008-07-17 Kao Corp 吸収性物品用の表面シート及びその製造方法
JP2008161526A (ja) * 2006-12-28 2008-07-17 Kao Corp 吸収性物品用の表面シート

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JP2011137262A (ja) * 2009-12-28 2011-07-14 Kao Corp 立体賦形不織布
US9327473B2 (en) 2012-10-31 2016-05-03 Kimberly-Clark Worldwide, Inc. Fluid-entangled laminate webs having hollow projections and a process and apparatus for making the same
US9474660B2 (en) 2012-10-31 2016-10-25 Kimberly-Clark Worldwide, Inc. Absorbent article with a fluid-entangled body facing material including a plurality of hollow projections
US9480608B2 (en) 2012-10-31 2016-11-01 Kimberly-Clark Worldwide, Inc. Absorbent article with a fluid-entangled body facing material including a plurality of hollow projections
US9480609B2 (en) 2012-10-31 2016-11-01 Kimberly-Clark Worldwide, Inc. Absorbent article with a fluid-entangled body facing material including a plurality of hollow projections
US11491058B2 (en) 2012-10-31 2022-11-08 Kimberly-Clark Worldwide, Inc. Absorbent article with a fluid entangled body facing material including a plurality of projections
US10478354B2 (en) 2012-10-31 2019-11-19 Kimberly-Clark Worldwide, Inc. Absorbent article with a fluid-entangled body facing material including a plurality of hollow projections
US10470947B2 (en) 2012-10-31 2019-11-12 Kimberly-Clark Worldwide, Inc. Absorbent article with a fluid-entangled body facing material including a plurality of hollow projections
US10070999B2 (en) 2012-10-31 2018-09-11 Kimberly-Clark Worldwide, Inc. Absorbent article
US10226385B2 (en) 2014-09-12 2019-03-12 The Procter & Gamble Company Process for making an absorbent article comprising a topsheet/acquisition layer laminate
US10993845B2 (en) 2014-09-12 2021-05-04 The Procter & Gamble Company Process for making an absorbent article comprising a topsheet/acquisition layer laminate
US10182949B2 (en) 2014-09-12 2019-01-22 The Procter & Gamble Company Nonwoven material having discrete three-dimensional deformations with wide base openings that are base bonded to additional layer
US10076898B2 (en) 2014-09-12 2018-09-18 The Procter & Gamble Company Apparatus having forming members with surface texture for making nonwoven material having discrete three-dimensional deformations with wide base openings
US10064766B2 (en) 2014-09-12 2018-09-04 The Procter & Gamble Company Nonwoven material having discrete three-dimensional deformations that are configured to collapse in a controlled manner
US10045888B2 (en) 2014-09-12 2018-08-14 The Procter & Gamble Company Nonwoven material having discrete three-dimensional deformations with wide base openings
US10500826B2 (en) 2014-09-12 2019-12-10 The Procter & Gamble Company Method of making nonwoven material having discrete three-dimensional deformations with wide base openings
US10045889B2 (en) 2014-09-12 2018-08-14 The Procter & Gamble Company Nonwoven material having discrete three-dimensional deformations with wide base openings and specific fiber concentrations
US10687987B2 (en) 2014-09-12 2020-06-23 The Procter & Gamble Company Process for making an absorbent article comprising a topsheet/acquisition layer laminate
US10105268B2 (en) 2014-09-12 2018-10-23 The Procter & Gamble Company Nonwoven material having discrete three-dimensional deformations with differential opacity regions
US11154428B2 (en) 2014-09-12 2021-10-26 The Procter & Gamble Company Absorbent articles with indicia and/or color
US10610423B2 (en) 2016-03-08 2020-04-07 The Procter & Gamble Company Absorbent article comprising a topsheet/acquisition web laminate
US11365495B2 (en) 2017-02-28 2022-06-21 Kimberly-Clark Worldwide, Inc. Process for making fluid-entangled laminate webs with hollow projections and apertures
US11696856B2 (en) 2017-03-09 2023-07-11 The Procter & Gamble Comoany Three-dimensional materials having apertures and voids
US11007093B2 (en) 2017-03-30 2021-05-18 Kimberly-Clark Worldwide, Inc. Incorporation of apertured area into an absorbent article
US11998430B2 (en) 2017-03-30 2024-06-04 Kimberly-Clark Worldwide, Inc. Incorporation of apertured area into an absorbent article
US12029633B2 (en) 2022-10-05 2024-07-09 Kimberly-Clark Worldwide, Inc. Absorbent article with a fluid entangled body facing material including a plurality of projections

Also Published As

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JP2010148730A (ja) 2010-07-08
CN102245141A (zh) 2011-11-16
TW201029634A (en) 2010-08-16

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