WO2009104673A1 - Article absorbant - Google Patents

Article absorbant Download PDF

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Publication number
WO2009104673A1
WO2009104673A1 PCT/JP2009/052872 JP2009052872W WO2009104673A1 WO 2009104673 A1 WO2009104673 A1 WO 2009104673A1 JP 2009052872 W JP2009052872 W JP 2009052872W WO 2009104673 A1 WO2009104673 A1 WO 2009104673A1
Authority
WO
WIPO (PCT)
Prior art keywords
region
absorbent article
sheet
diaper
absorbent
Prior art date
Application number
PCT/JP2009/052872
Other languages
English (en)
Japanese (ja)
Inventor
友美 奥
智 坂口
Original Assignee
ユニ・チャーム株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2008037916A external-priority patent/JP5130075B2/ja
Priority claimed from JP2008093816A external-priority patent/JP5379991B2/ja
Priority claimed from JP2009026246A external-priority patent/JP5566612B2/ja
Priority claimed from JP2009026255A external-priority patent/JP5566613B2/ja
Priority claimed from PCT/JP2009/052646 external-priority patent/WO2009104581A1/fr
Application filed by ユニ・チャーム株式会社 filed Critical ユニ・チャーム株式会社
Priority to CA2715999A priority Critical patent/CA2715999A1/fr
Priority to CN2009801057555A priority patent/CN101945631A/zh
Priority to MX2010009134A priority patent/MX2010009134A/es
Priority to AU2009216183A priority patent/AU2009216183A1/en
Publication of WO2009104673A1 publication Critical patent/WO2009104673A1/fr
Priority to MA33182A priority patent/MA32198B1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/494—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means
    • A61F13/49406—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region
    • A61F13/49413—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region the edge leakage prevention means being an upstanding barrier
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/494—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means
    • A61F13/49466—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means the edge leakage prevention means being at the waist region

Definitions

  • the present invention relates to an absorbent article such as a diaper.
  • Patent Document 1 a diaper having an absorbent main body composed of a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber is widely known (for example, Patent Document 1).
  • the diaper 100 includes a liquid-permeable top sheet 101a, a liquid-impermeable back sheet 101b, and an absorbent body 101c disposed between the sheets 101a and 101b.
  • the absorptive main body 101 is provided.
  • the absorber 101c absorbs the liquid and holds the liquid.
  • the absorbent main body 101 has a dorsal region S1, a crotch region S2, and a ventral region S3 in the longitudinal direction L from the back side Ba to the ventral side Fr, and from the back side Ba to the ventral side Fr with the crotch of the wearer as a center. Cover.
  • a pair of left and right side flap portions 110 formed by extending the top sheet 101a and the back sheet 101b are provided on both sides in the width direction W of the absorbent main body 101.
  • the width direction W of the absorbent main body 101 is a direction orthogonal to the longitudinal direction L from the back side Ba to the ventral side Fr in the plan view of the diaper 100.
  • Each side flap portion 110 is provided with an elastic member 120 in an elongated state in the longitudinal direction L.
  • the pair of elastic members 120 are provided to be curved in the longitudinal direction L of the absorbent main body 101 instead of being straight. Thereby, the distance between the pair of elastic members 120 is set wider in the ventral region S3 than in the dorsal region S1.
  • the diaper 100 can be fitted along the wearer's throat portion when worn, the wearability is excellent, and a space is formed between the ventral side Fr of the diaper 100 and the wearer. In this space, urine can be temporarily held, and leakage of urine can be prevented as much as possible.
  • Patent Document 2 there is one disclosed in Patent Document 2. Specifically, as shown in FIG. 2, the diaper 100A is disposed between the liquid-permeable top sheet 101d, the liquid-impermeable back sheet 101e, and the sheets 101d and 101e, as with the diaper 100. An absorbent main body 101A including the absorbent body 101f is provided.
  • the distance between the pair of elastic members 120A is different from the configuration of the diaper 100 in that the dorsal region S1 is set wider than the ventral region S3.
  • the diaper 100 ⁇ / b> A can be fitted so as to wrap the wearer's hips when worn, so that the wearability is excellent.
  • JP 11-47189 A page 2-3, FIG. 1
  • Japanese Patent Laid-Open No. 10-243961 page 3, FIG. 1
  • the distance between the pair of left and right elastic members 120 is curved so as to be different in the back region S1, the crotch region S2, and the abdominal region S3.
  • the elastic member 120 (elastic member 120A) is curved and arranged, the processing is complicated.
  • an object of the present invention is to provide an absorbent article that can be fitted to a wearer and can reduce the amount of materials used and facilitate the processing during manufacture.
  • a feature of the present invention is that it is disposed between a liquid-permeable top sheet (top sheet 3), a liquid-impermeable back sheet (back sheet 4), and between the top sheet and the back sheet, and absorbs liquid.
  • an absorbent body aborber body 5 that is held and held, and when worn, in the longitudinal direction L from the back side Ba to the abdominal side Fr in the longitudinal direction L (back side area S1), crotch area (inseam area S2), abdomen
  • An absorbent main body (absorbent main body 2) having a side region (ventral side region S3) and a pair of left and right side flap portions (side flap portions 10) provided on both sides in the width direction W of the absorbent main body.
  • the ventral region of each side flap portion was provided with a ventral stretch region (ventral stretch region 15) stretched in the waistline direction (width direction W). This is the gist.
  • the size of the abdomen around the absorbent main body and the pair of side flap portions becomes wider than the other parts depending on the abdominal stretch region, so it is worn when worn.
  • the absorbent article can be fitted along the heel portion of the person.
  • the absorbent article is excellent in wearability, and forms a space between the absorbent main body and the abdomen Fr of the pair of side flap portions and the wearer, and urine can be temporarily held by this space. It is possible to prevent urine leakage as much as possible.
  • the ventral region is formed by extending a part of the pair of side flap portions, the ventral side Fr of each side flap portion is formed larger in the waist direction than the other portions, that is, the waist side of the ventral side Fr.
  • the edge in the direction does not have to be provided in a curved shape.
  • the absorbent article can be fitted along the wearer's throat portion when worn, and a space can be formed between the stomach side Fr of the absorbent article and the wearer. Thus, it is possible to reduce the amount of materials used, facilitate processing, and reduce costs associated with these.
  • a feature of the present invention is that it is disposed between a liquid-permeable top sheet (top sheet 3), a liquid-impermeable back sheet (back sheet 4), and between the top sheet and the back sheet, and absorbs liquid.
  • an absorbent body aborber body 5 that is held and held, and when worn, in the longitudinal direction L from the back side Ba to the abdominal side Fr in the longitudinal direction L (back side area S1), crotch area (inseam area S2), abdomen
  • An absorbent main body (absorbent main body 2) having a side region (ventral side region S3) and a pair of left and right side flap portions (side flap portions 10) provided on both sides in the width direction W of the absorbent main body.
  • the back side region of each side flap part is provided with a back side extended region (back side extended region 14) extended in the waistline direction (width direction W).
  • the size of the waistline width of the back side Ba of the pair of side flap portions is widened by the back-side stretched region, so the back side Ba of the absorbent main body and the pair of side flap portions. It can be fitted to wrap your hips, and it is easy to wear.
  • a space can be formed between the wearer and the absorbent main body in a state where the buttocks are wrapped with the back side Ba of the absorbent main body and the pair of side flap portions, excrement discharged by the space can be formed. It can be temporarily held, and the leakage of excrement can be prevented as much as possible.
  • the dorsal stretch region is formed by stretching a part of the pair of side flap portions, the dorsal side Ba of each side flap portion is formed larger in the waistline direction than the other portions, that is, around the waist of the back side Ba
  • the edge in the direction does not have to be provided in a curved shape. From the above, it is possible to fit the wearer's hip so as to wrap the wearer's hips, and it is possible to reduce the materials used, facilitate the processing, and reduce the costs associated therewith.
  • the present invention it can be fitted to the wearer, and it is possible to reduce the amount of materials used and facilitate the processing during manufacturing.
  • FIG. 1 is a plan view showing a developed state of a conventional diaper.
  • FIG. 2 is a plan view showing an unfolded state of a conventional diaper.
  • FIG. 3 is a plan view showing a developed state of the diaper according to Embodiment 1-1 of the present invention.
  • FIG. 4 is a cross-sectional view taken along line AA of the diaper (FIG. 3) according to the 1-1 embodiment of the present invention.
  • FIG. 5 is a cross-sectional view of the diaper (FIG. 3) according to the 1-1 embodiment of the present invention taken along line BB.
  • 6 is a cross-sectional view taken along line BB of FIG. 3 when the diaper according to the first to first embodiments of the present invention is worn.
  • FIG. 1 is a plan view showing a developed state of a conventional diaper.
  • FIG. 2 is a plan view showing an unfolded state of a conventional diaper.
  • FIG. 3 is a plan view showing a developed state of the diaper according to Embodiment 1
  • FIG. 7 is a plan view showing a developed state when the diaper according to the first to first embodiments of the present invention is worn.
  • FIG. 8 is a sectional view of an essential part of a stretching apparatus for producing a diaper according to Embodiment 1-1 of the present invention.
  • FIG. 9 is a plan view of a diaper according to the first to second embodiments of the present invention.
  • FIG. 10 is a cross-sectional view of a diaper according to Embodiment 1-3 of the present invention.
  • FIG. 11 is a cross-sectional view of a diaper according to Embodiment 1-4 of the present invention.
  • FIG. 12 is a plan view showing a developed state of the diaper according to Embodiment 1-5 of the present invention.
  • FIG. 13 is a cross-sectional view taken along the line CC of the diaper according to the first to fifth embodiments of the present invention.
  • FIG. 14 is a sectional view taken along line DD of the diaper according to Embodiment 1-5 of the present invention.
  • 15 is a cross-sectional view taken along the line DD of FIG. 12 when the diaper according to the first to fifth embodiments of the present invention is worn.
  • FIG. 16 is a plan view showing a developed state when the diaper is worn according to the first to fifth embodiments of the present invention.
  • FIG. 17 is a plan view of a diaper according to Embodiment 1-6 of the present invention.
  • FIG. 18 is a plan view of a diaper according to Embodiment 1-7 of the present invention.
  • FIG. 19 is a cross-sectional view of a diaper according to Embodiment 1-8 of the present invention.
  • the development state of a figure is shown.
  • FIG. 20 is a cross-sectional view of a diaper according to Embodiment 1-9 of the present invention.
  • the development state of a figure is shown.
  • FIG. 21 is a cross-sectional view of a diaper according to Embodiment 2-1 of the present invention.
  • FIG. 22 is a plan view of a developed state of the diaper according to the 2-2 embodiment of the present invention.
  • 23 is a cross-sectional view taken along line A1-A1 of FIG. 24 is a cross-sectional view taken along line B1-B1 of FIG.
  • FIG. 25 is a plan view of a diaper showing the distance of moisture permeation.
  • FIG. 26 is a plan view of a diaper showing the distance of moisture permeation.
  • FIG. 27 is a cross-sectional view of the stretching apparatus.
  • FIG. 28 is a cross-sectional view showing a diaper according to Embodiment 2-3 of the present invention.
  • FIG. 29 is a sectional view showing a diaper according to Embodiment 2-4 of the present invention.
  • FIG. 30 is a cross-sectional view showing a diaper according to Embodiment 2-5 of the present invention.
  • FIG. 31 is a plan view showing a diaper according to Embodiment 2-6 of the present invention.
  • FIG. 32A is a perspective view of a conventional diaper
  • FIG. 32B is a plan view when another conventional diaper is developed.
  • FIG. 33 shows a diaper according to Embodiment 3-1 of the present invention, and is a plan view of the diaper in a developed state.
  • 34 shows a diaper according to Embodiment 3-1 of the present invention, and is a cross-sectional view taken along line A2-A2 of FIG.
  • FIG. 35 is a cross-sectional view taken along line B2-B2 of FIG. 33, showing a diaper according to Embodiment 3-1 of the present invention.
  • 36 is a cross-sectional view taken along line B2-B2 of FIG. 33, showing a diaper according to Embodiment 3-1 of the present invention.
  • FIG. 37 is a cross-sectional view of a main part of the stretching apparatus.
  • FIG. 38 shows a diaper according to Embodiment 3-1 of the present invention, wherein (a) is a plan view before the center of the crotch region of the side flap portion is pulled outward, and (b) is one side flap portion. It is a top view in the state where the central end of the crotch region was pulled outward.
  • FIG. 39 is a cross-sectional view of a diaper according to Embodiment 3-2 of the present invention.
  • FIG. 40 is a cross-sectional view of a diaper according to Embodiment 3-3 of the present invention.
  • FIG. 41 is a plan view of a diaper in a developed state according to the third to fourth embodiments of the present invention.
  • FIG. 42 is a plan view of a developed state of a diaper according to Embodiment 3-5 of the present invention.
  • FIG. 43 is a plan view of a conventional diaper.
  • FIG. 44 is a plan view showing a diaper in a developed state according to the fourth to fourth embodiments of the present invention.
  • FIG. 45 shows a fourth embodiment of the present invention and is a cross-sectional view taken along line AA of FIG.
  • FIG. 46 is a sectional view taken along line BB of FIG. 44, showing the 4-1 embodiment of the present invention.
  • FIG. 47 is a cross-sectional view taken along the line CC of FIG. 44, showing the 4-1 embodiment of the present invention.
  • FIG. 48 is a plan view showing a fourth embodiment of the present invention and showing a mounted state.
  • FIG. 49 is a sectional view of a stretching apparatus according to the 4-1 embodiment of the present invention.
  • FIG. 50 is a side view of a mounted state according to the fourth embodiment of the present invention.
  • FIG. 51 shows a 4-2 embodiment of the present invention, where (a) is a plan view before wearing, and (b) is a plan view after wearing.
  • FIG. 52 shows a 4-3 embodiment of the present invention, wherein (a) is a plan view before wearing, and (b) is a plan view after wearing.
  • FIG. 53 is a plan view of a diaper in a developed state, showing Embodiment 4-4 of the present invention.
  • FIG. 3 to 7 show a diaper 1A according to Embodiment 1-1 of the present invention.
  • FIG. 3 shows a plan view of the diaper deployed.
  • 4 shows a cross-sectional view taken along line AA of FIG.
  • FIG. 5 is a sectional view taken along line BB of FIG.
  • FIG. 6 shows a cross-sectional view in a worn state.
  • FIG. 7 is a plan view showing the worn state in a developed state.
  • the back side Ba and the ventral side Fr are determined, and the back side region S1, the crotch region S2, and the abdomen are sequentially arranged along the longitudinal direction L from the back side Ba toward the ventral side Fr.
  • a side region S3 is provided.
  • a diaper 1A as an absorbent article includes an absorbent main body 2, a pair of left and right side flap portions 10 provided on both sides in the width direction W of the absorbent main body 2, and a pair of The back side waist flap part 20 and a pair of ventral side waist flap part 21 are provided.
  • the back waist flap portions 20 are provided at both ends in the width direction W of the back side Ba of the pair of side flap portions 10.
  • the ventral side waist flap portions 21 are provided at both ends in the width direction W of the ventral side Fr of the pair of side flap portions 10.
  • the absorbent main body 2 includes at least a liquid-permeable top sheet 3, a liquid-impermeable back sheet 4, and an absorber 5 that is disposed between the top sheet 3 and the back sheet 4 and absorbs and holds liquid. Composed.
  • the absorptive main body 2 has a dorsal region S1, a crotch region S2, and a ventral region S3 along a longitudinal direction L from the dorsal side Ba to the ventral side Fr.
  • the absorptive main body 2 covers the wearer's back side Ba, crotch side, and ventral side Fr.
  • both end portions in the width direction W are folded so as to wrap the absorber 5.
  • the folded portion of the top sheet 3 and the absorbent body 5 are joined to the back sheet 4 by glue such as hot melt.
  • the top sheet 3 is a hydrophilic nonwoven fabric, a woven fabric, an apertured plastic film, a hydrophobic nonwoven fabric having apertures, or a laminated nonwoven fabric manufactured by a spunbond method / melt blow method / spunbond method having a basis weight of 10 g / m 2. (Hereinafter referred to as SMS) or the like.
  • the back sheet 4 is formed of a non-breathable film having a basis weight of 23.5 g / m 2 .
  • the back sheet 4 may be formed of a moisture permeable or moisture impermeable film, a sheet obtained by laminating a nonwoven fabric to such a film, or the like.
  • the absorber 5 is a laminate having liquid absorption retention. Specifically, the absorbent body 5 is formed by mixing absorbent pulp and superabsorbent polymer.
  • the pair of side flap portions 10 includes a back sheet 4 extending from both sides in the width direction W of the absorbent main body 2, and a liquid-impermeable exterior sheet superimposed on the back surface of the absorbent main body 2 and the back sheet 4. 11.
  • the back sheet 4 and the exterior sheet 11 are joined with paste such as hot melt.
  • the exterior sheet 11 is formed to have a longer dimension in the width direction W than the back sheet 4.
  • the outer three rows of elastic members 12 a to 12 c are provided on both sides of the exterior sheet 11 formed longer in the width direction W than the back sheet 4.
  • the innermost elastic member 12d is disposed approximately at the center between the side edge of the absorbent main body 2 and the outermost elastic member 12a.
  • the elastic member 12 d is provided between the exterior sheet 11 and the back sheet 4.
  • Each of the elastic members 12a to 12d is, for example, a polyurethane elastic yarn.
  • each of the ventral-side stretched regions 15 is disposed on the most absorbent main body 2 side in the outer three rows of elastic members 12a to 12c provided on the side flap portion 10 from the side edge of the absorbent main body 2. It is provided between the inner side of the elastic member 12c.
  • Each ventral stretch region 15 is a region having a lower basis weight than other regions by stretching.
  • Each ventral region 15 has a dense portion (not labeled) with a small stretch amount and a rough portion (not labeled) with a large stretch amount alternately along the width direction W of the side flap portion 10. Is provided.
  • Each ventral stretch region 15 is stretched in a range of 1.5 to 3.0 times as compared with that before stretching. If the stretch amount of each ventral stretch region 15 is less than 1.5 times, the rising dimension of the side flap portion 10 is small in the vertical direction, and the elastic members 12a, 12b, and 12c may not adhere to the skin.
  • each ventral stretch region 15 exceeds 3.0 times, damage due to stretching is large and material damage such as tearing or perforation may occur. If the stretch amount of each ventral stretch region 15 is in the range of 1.5 to 3.0 times, a space, so-called pocket, can be formed between the absorbent main body 2 and the skin without fear of material damage.
  • Each ventral stretch region 15 has transparency that allows internal excrement to be visually recognized from the outside when worn. That is, the transmittance of each ventral stretched region 15 is a transmittance that allows the inside to pass from the outside. The light transmittance rises by 3% or more due to stretching, and if the light transmittance is 61% or more (measured according to JIS standard K7105), the internal excrement can be visually recognized from the outside.
  • each ventral stretch region 15 of this embodiment is provided in the width direction W of the side flap portion 10 over almost the entire region between the absorbent main body 2 and the outermost elastic member 12a.
  • Each ventral extension region 15 is provided in the longitudinal direction L of the side flap portion 10 over the entire range of the ventral region S3 so as to reach the edge of the ventral region S3.
  • each abdominal stretch region 15 does not extend to the crotch region S2 or the back region S1. A specific method for producing the ventral stretch region 15 will be described in detail below.
  • the waist flap portion is composed of a pair of back side waist flap portions 20 and a pair of ventral side waist flap portions 21.
  • One end of the pair of back-side waist flap portions 20 is fixed to the back-side region S ⁇ b> 1 of the pair of side flap portions 10.
  • a locking portion 22 is provided on the distal end side of each back waist flap portion 20.
  • Each locking portion 22 is a hook-and-loop fastener that locks with a mechanical locking force or an adhesive tape that locks with an adhesive force.
  • the material of the abdominal side waist flap portion 21 is a sheet material whose surface is at least a nonwoven fabric.
  • FIG. 8 is a cross-sectional view of the stretching apparatus.
  • the side flap portion 10 is coated using a spiral spray so that a heat-sensitive adhesive (for example, hot melt, etc., hereinafter referred to as HMA) is 15 mm in diameter and has a basis weight of 5 g / m 2.
  • HMA heat-sensitive adhesive
  • the back sheet 4 is a non-breathable film having a basis weight of 23.5 g / m 2 .
  • the exterior sheet 11 is an SMS having a basis weight of 13 g / m 2 .
  • the stretching device 30 that forms the ventral-side stretched region 15 has a pair of stretched blade rows 31 that face each other and can be engaged with each other.
  • Each stretched blade row portion 31 has a blade depth of 2.5 mm, a pitch between a pair of blades of 1.25 mm, and a number of blades of 17.
  • the stretching device 30 performs a stretching process at a set temperature of the stretching blade row portion 31 of 100 ° C. By stretching in this manner, the ventral-side stretched region 15 can be stretched 1.8 times when compared to before stretching.
  • a dense portion having a small stretch amount and a rough portion having a large stretch amount are alternately provided in the ventral stretch region 15 along the width direction W (the waistline direction) of the side flap portion 10. It is done.
  • the width W2 (FIGS. 6 and 7) is 1. It is preferably in the range of 5 to 3.0 times.
  • the width W1 extends from the side edge of the absorbent main body 2 at the portion where the width of the side flap portion 10 is the narrowest when extended in the width direction W to the outer three rows of elastic members 12a to 12 provided on the side flap portion 10.
  • it is the width
  • the width W2 is a width from the side edge of the absorbent main body 2 to the vicinity of the inner side on the elastic member 12c side in a portion where the width of the side flap portion 10 is the widest when it is extended in the width direction W.
  • the width W2 is the width of the side flap portion 10 serving as a reference after the drawing process.
  • the width W2 is less than 1.5 times the width W1
  • the stretch amount of the ventral stretch region 15 that has been reduced in basis weight by stretching is short, so the side flaps from the side of the absorbent body 2
  • the distance to the elastic member arrangement part of the part 10 becomes short, and the accommodation space for urine leaking from the absorber 5 becomes narrow. For this reason, excrement passes over the elastic member arrangement
  • the stretched amount of the ventral stretched region 15 that has been reduced in basis weight by stretching is long, so the material is easily damaged and stretched. There is a high possibility of material damage such as drilling and holes. As a result, when the material is damaged, urine leaks from the damaged part.
  • the width of the outer edge of the side flap portion 10 from the side edge of the absorbent main body 2 when the side flap portion 10 is extended in the width direction W is the same as described above. Is preferably 1.5 times to 3.0 times the narrowest width for the same reason as above.
  • each side flap portion 10 comes into close contact with the wearer's legs due to the contraction of the elastic members 12a to 12d. Further, as shown in FIG. 7, the ventral region S3 in which the ventral stretch region 15 is formed spreads in the width direction W when worn by a distance that is stretched and reduced in basis weight.
  • the back side region S1 since the back side region S1 is not stretched, the back side region S1 does not expand beyond the original width even if the back side region S1 is stretched in the width direction W when worn.
  • the distance between the elastic members 12a to 12d is similarly worn on the body with the distance between the elastic members 12a to 12d on the ventral side Fr being longer than the back side Ba. .
  • the diaper 1A can be fitted along the wearer's throat when worn, the diaper 1A is excellent in wearability.
  • a space so-called pocket, is formed between the absorbent main body 2 and the ventral side Fr of the pair of side flap portions 10 and the wearer.
  • the diaper 1A can temporarily hold urine by a pocket and can prevent urine leakage as much as possible.
  • region 15 is formed by extending
  • FIG. For this reason, in the manufacturing process of the diaper 1A, it is not necessary to form the ventral side Fr of each side flap part 10 larger in the width direction W than other places. That is, the diaper 1A does not need to provide the edge in the width direction W of the ventral side Fr in a curved shape in the manufacturing process.
  • the diaper 1A that can be fitted to the wearer and can form a space between the abdomen Fr of the absorbent main body 2 and the wearer, reduction of materials used, facilitation of processing,
  • the diaper 1A can achieve the cost reduction accompanying these.
  • the elastic members 12a, 12b, 12c can be arranged in a vertical straight line on the side flap portion 10 for manufacturing, the processing steps can be simplified. Further, the ventral-side stretched region 15 of the side flap portion 10 is formed by being stretched in the width direction W by stretching, and a substantially linear material can be used for the side flap portion 10 before stretching. For this reason, in the manufacturing process of the diaper 1A, waste of materials due to punching can be eliminated and processing can be facilitated.
  • surroundings near a wearer's inseam is the thin soft abdominal-side extending
  • the diaper 1A can reduce discomfort.
  • the diaper 1A can improve the followability to the wearer's hip movement.
  • the ventral-side stretched region 15 has an advantage that it can easily stand up in the vertical direction with respect to the absorbent main body 2.
  • the ventral stretch region 15 reaches the end edge of the ventral side Fr, but may be provided so as not to reach the end edge of the ventral side Fr. However, it is preferable from the viewpoint of fit to the wearer that the ventral stretched region 15 is provided until reaching the end edge of the ventral Fr as in this embodiment.
  • each ventral stretch region 15 is provided between the absorbent main body 2 and the elastic member 12a located on the outermost side. That is, each abdominal stretch region 15 is provided in a region closer to the absorbent main body 2 than a center line that is equally divided in the width direction W between the side edge of the absorbent main body 2 and the elastic member 12a located on the outermost side. Therefore, there are the following advantages. Even in a diaper 1A in which elastic members 12a to 12d are provided on a pair of side flap portions 10, it is only necessary to provide elastic members on each side flap portion 10 in a straight line. Therefore, diapers with elastic members can be easily processed. Therefore, the cost can be reduced.
  • the diaper 1A when worn, it begins to bend at a position having a difference in rigidity, that is, a boundary position between the absorbent main body 2 and the side flap portion 10, but in this embodiment, this portion is a flexible ventral side stretch. Since it is the region 15, the rising characteristics are good.
  • each abdominal stretch region 15 has a transparency that allows the internal excrement to be visually recognized from the outside at the time of wearing, so that the presence or absence of the excrement inside the diaper 1A can be confirmed from the outside through the ventral stretch region 15. For this reason, the diaper 1A can easily determine the replacement time and the like.
  • each ventral stretch region 15 is provided with a dense portion having a small stretch amount and a rough portion having a large stretch amount alternately along the width direction W of the side flap portion 10. Therefore, in the manufacturing process of the diaper 1A, the ventral stretched region 15 is configured by being alternately folded by the dense portion and the rough portion, so that the outer edge of each side flap portion 10 is linear without protruding. That is, the diaper 1A is improved in handling in the manufacturing process, product packaging process, and the like.
  • FIG. 9 is a plan view of a diaper 1B according to the first to second embodiments of the present invention, showing a state where the width is widened to wear the diaper 1B.
  • the widths are not uniformly the same but different.
  • the diaper 1B according to the 1-2 embodiment is different in stretch amount in the ventral stretch region 15 from the 1-1 embodiment.
  • the width dimension L1 of the crotch region side T2 when stretched in the width direction W of the diaper 1B (when worn) is the abdominal side Fr when stretched in the width direction W of the diaper 1B. It is provided so as to be larger than the width dimension L2 on the edge side T1.
  • Such a width dimension can be produced by varying the width dimension itself to be stretched on the crotch region side T2 and the end edge side T1 of the ventral side Fr, or by varying the degree of stretching per unit length. .
  • the diaper 1B since the diaper 1B can form a large space, so-called pocket, between the abdomen Fr of the diaper 1B and the skin of the wearer, the diaper 1B temporarily generates a large amount of urine in the large space. It can be held. That is, the diaper 1B can more reliably prevent the excrement from leaking.
  • FIG. 10 is a cross-sectional view of a diaper 1C according to the first to third embodiments of the present invention.
  • the diaper 1C according to the first to third embodiments has a configuration of the absorbent main body 2 and the ventral region 15 of each side flap portion 10 as compared with the first to first embodiments.
  • the configuration is different. That is, the top sheet 3 and the back sheet 4 of the absorbent main body 2 are joined only at the central portion in the width direction W of the diaper 1C by the joint portion 6 and are not joined at both ends in the width direction W of the diaper 1C. And each abdominal side extending
  • each ventral stretch region 15 is provided to extend to a region that overlaps the absorbent main body 2, so that the width dimension of the ventral stretch region 15 can be increased. Accordingly, the diaper 1 ⁇ / b> C can deepen a space formed on the ventral side Fr of the diaper 1 ⁇ / b> C, that is, a so-called pocket.
  • FIG. 11 is a sectional view of a diaper 1D according to the first to fourth embodiments of the present invention.
  • the diaper 1D according to the first to fourth embodiments is different from the first to first embodiments only in the configuration of each side flap portion 10.
  • Each side flap portion 10 is branched into two, an inner flap portion 10a and an outer flap portion 10b, on the outer side in the width direction W of the side flap portion 10.
  • a sheet material with a good touch is used for the inner flap portion 10a.
  • Elastic members 12a, 12b, 12c, and 12e are provided in an extended state at the distal ends of both the inner flap portion 10a and the outer flap portion 10b. That is, since the side flap part 10 closely_contact
  • the diaper 1 ⁇ / b> D has good touchability because the inner flap portion 10 a is a sheet material with a good touch.
  • the elastic members 12a, 12b, 12c, and 12e are provided at the tip portions of both the inner flap portion 10a and the outer flap portion 10b.
  • the diaper may be provided with an elastic member in an expanded state only at the tip of the inner flap portion 10a. According to this, the diaper according to the modified example of the first to fourth embodiments has a so-called inward-turned three-dimensional gather structure.
  • FIG. 12 to 16 show a diaper 1E according to the first to fifth embodiments of the present invention.
  • FIG. 12 shows a plan view of the diaper deployed.
  • FIG. 13 is a sectional view taken along the line CC of FIG.
  • FIG. 14 is a sectional view taken along line DD of FIG.
  • FIG. 15 shows a cross-sectional view of the wearing state.
  • FIG. 16 is a plan view showing a worn state in an expanded state.
  • ventral region 15 is provided in the ventral region S3 of the side flap portion.
  • dorsal extending region 14 is provided in the dorsal region S1 of the side flap portion.
  • each of the dorsal stretch regions 14 is arranged on the most absorbent main body 2 side in the outer three rows of elastic members 12a to 12c provided on the side flap portion 10 from the side edge of the absorbent main body 2. It is provided between the inner side of the elastic member 12c.
  • Each of the dorsal stretch regions 14 is stretched in the width direction W, which is a direction orthogonal to the longitudinal direction L from the dorsal side Ba to the ventral side Fr by stretching, thereby lowering the basis weight than other regions.
  • Each back-side stretch region 14 has alternating dense portions (not labeled) having a small stretch amount and coarse portions (not having a symbol) having a large stretch amount along the width direction W of the side flap portion 10. Is provided.
  • Each back-side stretched region 14 is stretched in a range of 1.5 to 3.0 times when compared with that before stretching. If the stretching amount of each back-side stretched region 14 is less than 1.5 times, the vertical dimension of the side flap portion 10 is so small that the elastic members 12a, 12b, 12c may not adhere to the skin. In addition, if the stretching amount of each back-side stretching region 14 exceeds 3.0 times, damage due to stretching is large, and material damage such as tearing or perforation may occur. If the stretch amount of each back-side stretch region 14 is in the range of 1.5 to 3.0 times, the diaper 1E can be reliably formed in the space, so-called pocket, without fear of material damage.
  • Each back-side stretch region 14 has a transparency that allows internal excrement to be visually recognized from the outside when worn. That is, the transmittance of each back-side stretched region 14 is a transmittance that allows the inside to transmit from the outside.
  • region 14 of this embodiment is provided in the width direction W of the side flap part 10 over the substantially whole area
  • Each dorsal extending region 14 is provided in the longitudinal direction L of the side flap portion 10 over the entire range of the dorsal region S1 so as to reach the edge of the dorsal region S1.
  • each dorsal stretch region 14 does not extend to the crotch region S2 or the ventral region S3.
  • a specific method for producing the back-side stretched region 14 is the same as the method for producing the ventral-side stretched region 15 of the above-described embodiment, and thus description thereof is omitted.
  • the width W4 (FIGS. 15 and 16) is 1. It is preferably in the range of 5 to 3.0 times.
  • the width W3 is defined by three outer rows of elastic members 12a to 12 provided on the side flap portion 10 from the side edge of the absorbent main body 2 at the portion where the width of the side flap portion 10 is the narrowest when it is extended in the width direction W.
  • 12c it is the width
  • the width W4 is a width from the side edge of the absorbent main body 2 to the vicinity of the inner side on the elastic member 12c side in a portion where the width of the side flap portion 10 is widest when extended in the width direction W.
  • the width W4 is the width of the side flap portion 10 serving as a reference after the drawing process.
  • the stretching amount of the dorsal stretching region 14 that has been reduced in basis weight by stretching is short, so the side flaps from the side of the absorbent body 2
  • positioning part of the part 10 becomes short, and the accommodation space of the excretion which leaked from the absorber 5 becomes narrow. For this reason, excrement will get over the elastic member arrangement part of the side flap part 10, and will leak from the diaper 1E.
  • the stretched amount of the dorsal stretched region 14 that has been reduced in the basis weight by stretching is long, so the material is easily damaged and stretched. There is a high possibility of material damage such as drilling and holes. As a result, when the material is damaged, excrement leaks from the damaged part.
  • the width of the outer edge of the side flap portion 10 from the side edge of the absorbent main body 2 when the side flap portion 10 is extended in the width direction W is the same as described above. Is preferably 1.5 times to 3.0 times the narrowest width for the same reason as above.
  • a large space is formed between the wearer and the absorbent main body 2 in a state of wrapping the hips at the back side Ba of the absorbent main body 2 and the pair of side flap portions 10.
  • the diaper 1E can temporarily hold a large amount of discharged excrement by this large space. That is, the diaper 1E can more reliably prevent the excrement from leaking.
  • a material for an exterior sheet suitable for stretching a material having a film breaking elongation of 750% or more is preferable.
  • the film elongation at break is less than 750%, pinholes are likely to occur during stretching, and the possibility of causing excrement leakage due to the occurrence of pinholes is high.
  • the amount of stretching in the dorsal-side stretched region 14 varies depending on the type of sheet material of the side flap portion 10
  • the amount of stretching is adjusted depending on the type of sheet material to obtain a transmittance that allows the inside to permeate from the outside.
  • each side flap portion 10 When the wearer wears the diaper 1E having the above configuration, the outer periphery of each side flap portion 10 is brought into close contact with the wearer's legs due to the contraction of the elastic members 12a to 12d. Further, as shown in FIG. 16, in the back side region S1 in which the back side stretched region 14 is formed, it spreads in the width direction W when worn by a distance that has been stretched and reduced in basis weight.
  • the ventral region S3 since the stretching process is not performed on the ventral region S3, even if the ventral region S3 is extended in the width direction W during wearing, the ventral region S3 does not expand beyond the original width.
  • the diaper 1E when the wearer wears the diaper 1E, the diaper 1E is worn on the body in a state where the width of the dorsal region S1 is wider than the ventral region S3.
  • the distance between the pair of elastic members 12a to 12d is also similar to the body with the distance between the elastic members 12a to 12d on the dorsal side Ba being longer than the ventral side Fr. Installed.
  • the diaper 1E is excellent in wearability because it can be fitted so as to wrap the hips of the wearer with the back side Ba.
  • the diaper 1E forms a spatial margin between the wearer and the diaper 1E in a state of wrapping the hip, the stool can be temporarily held even when the loose stool is excreted. That is, the diaper 1E can prevent the loose stool leaked from the absorber from leaking immediately beyond the elastic members 12a to 12d around the legs.
  • the back-side stretched region 14 is formed by stretching in the width direction W by stretching, a substantially linear material can be used as the side flap portion 10 before stretching. For this reason, in the manufacturing process of the diaper 1E, waste of materials due to the hollowing out can be omitted and the processing becomes easy.
  • surroundings near a wearer's inseam is a thin soft back extending
  • the diaper 1E can reduce discomfort.
  • the diaper 1E can improve the followability with respect to a wearer's hip motion.
  • the dorsal stretch region 14 has an advantage that it can easily stand up in the vertical direction with respect to the absorbent main body 2 and can be fitted to the hip without excessive tightening of the outer periphery of each side flap portion 10.
  • the dorsal stretch region 14 reaches the end edge of the dorsal side Ba, but may be provided so as not to reach the end edge of the dorsal side Ba. However, it is preferable from the viewpoint of fit to the wearer that the dorsal stretch region 14 is provided until reaching the end edge of the dorsal side Ba as in this embodiment.
  • each dorsal stretch region 14 is provided between the absorbent main body 2 and the elastic member 12a located on the outermost side.
  • each back-side stretched region 14 is provided in a region on the side of the absorbent main body 2 with respect to the center line that is bisected in the width direction W between the side edge of the absorbent main body 2 and the outermost elastic member 12a. Therefore, there are the following advantages. Even if the diapers are provided with elastic members 12a, 12b, and 12c on a pair of side flap portions 10, it is only necessary to provide elastic members on each side flap portion 10 in a straight line. Therefore, the cost can be reduced.
  • the diaper 1E when worn, it begins to bend from a position having a difference in rigidity, that is, a boundary position between the absorbent main body 2 and the side flap portion 10, but in this embodiment, this portion is a flexible dorsal stretch. Since it is made into the area
  • each dorsal stretch region 14 has a transparency that allows the internal excrement to be visually recognized from the outside when worn, the presence or absence of excrement inside the diaper 1E can be confirmed from the outside through the dorsal stretch region 14. For this reason, the diaper 1E can easily determine the replacement time and the like.
  • each back-side stretch region 14 is alternately provided with a dense portion having a small stretch amount and a rough portion having a large stretch amount along the width direction W of the side flap portion 10. Accordingly, in the manufacturing process of the diaper 1E, the back-side stretched region 14 is configured by being alternately folded by the dense portion and the rough portion, so that the outer edge of each side flap portion 10 is linear without protruding. That is, the diaper 1E has improved handling in the manufacturing process, product packaging process, and the like.
  • FIG. 17 is a plan view of a diaper 1F according to the first to sixth embodiments of the present invention, showing a state in which the width is increased in order to wear the diaper 1F.
  • the diaper 1F according to the first to sixth embodiments is different from the first to fifth embodiments in the stretch amount in the back stretch region 14.
  • the back side Ba when the width dimension L3 of the crotch region side T4 when stretched in the width direction W of the diaper 1F (when worn) is stretched in the width direction W of the diaper 1F. It is provided so as to be larger than the width dimension L4 on the edge side T3.
  • the diaper 1F can form a large space between the hip and the absorbent main body 2 when worn, the diaper 1F can temporarily hold a large amount of excrement. That is, the diaper 1F can more reliably prevent the excrement from leaking.
  • FIG. 18 is a plan view showing a developed state of the diaper 1G according to the first to seventh embodiments of the present invention.
  • the dorsal stretch region 14 is formed in the dorsal region S1 of the pair of side flap portions 10, and the ventral stretch region 15 is formed in the ventral region S3. Accordingly, since the width of the back region S1 and the ventral region S3 is wider than the crotch region S2, the diaper 1G can form a space on both the back side Ba and the ventral side Fr. Thereby, in the diaper 1G, a space is formed between the wearer and the absorbent main body 2 in a state of wrapping the crotch portion even in the abdominal side Fr of the absorbent main body 2 and the pair of side flap portions 10. For this reason, the diaper 1G can temporarily hold a large amount of discharged excrement in both the back side Ba and the ventral side Fr, and can prevent leakage of the excrement as much as possible.
  • the stretch amount can be varied between the crotch region and the dorsal region, as in the first to sixth embodiments. Thereby, it can be set as the diaper excellent in wearability.
  • FIG. 19 is a sectional view of a diaper 1H according to the first to eighth embodiments of the present invention.
  • the diaper 1H according to the first to eighth embodiments is different from the first to fifth embodiments in the configuration of the absorbent main body 2 and the configuration of the dorsal extending region 14 of each side flap portion 10.
  • the top sheet 3 and the back sheet 4 of the absorbent main body 2 are joined only at the center portion in the width direction W by the joint portion 6 and are not joined at both end portions in the width direction W.
  • region 14 is extended and provided in the area
  • each back-side stretch region 14 is provided so as to extend to a region overlapping with the absorbent main body 2, so that the width dimension of the back-side stretch region 14 can be increased. Therefore, the diaper 1H can enlarge the dimension which wraps the hips, and the space formed on the back side Ba of the diaper 1H, so-called pockets.
  • FIG. 20 is a cross-sectional view of a diaper 1I according to Embodiment 1-9 of the present invention.
  • the diaper 1I according to the first to ninth embodiments is different from the first to fifth embodiments only in the configuration of each side flap portion 10.
  • Each side flap portion 10 is branched into two, an inner flap portion 10a and an outer flap portion 10b, on the outer side in the width direction W of the side flap portion 10.
  • a sheet material with a good touch is used for the inner flap portion 10a.
  • Elastic members 12a, 12b, 12c, and 12e are provided in an extended state at the distal ends of both the inner flap portion 10a and the outer flap portion 10b. In other words, since the side flaps 10 are in close contact with each other around the legs when worn, the diaper 1I can more reliably prevent side leakage.
  • the diaper 1 ⁇ / b> I has good touch properties because the inner flap portion 10 a is a sheet material having a good touch. Since the other configuration is the same as that of the first to fifth embodiments, the redundant description will be omitted and the same components in the drawings will be denoted by the same reference numerals for clarification.
  • a crotch-side extension region can be provided between the absorbent main body 2 of the side flap portion 10 and the outermost elastic member 12a in the crotch region S2.
  • the crotch-side stretched region can be formed by stretching in the width direction W with respect to the crotch region S2 in the side flap portion 10. As described above, by providing the crotch-side stretched region, the outer periphery of each side flap portion 10 to be worn is in close contact with the wearer's leg due to the contraction of each elastic member.
  • the diaper according to the modified example does not provide the side flaps 10 with the folds, and also provides the edges of the side flaps 10 in a curved shape, or the edges of the side flaps 10 in the width direction W.
  • a pocket can be formed on the crotch side without providing an elastic member along the curved line.
  • ventral stretched region 15 and the dorsal stretched region 14 are formed on the backsheet 4 and the exterior sheet 11, but the ventral stretched region 15 and the dorsal stretched region 14 are formed on the backsheet 4. It may be formed by stretching only. In this case, it is possible to reduce the amount of nonwoven fabric used.
  • ventral stretch region 15 and the back stretch region 14 may be formed by stretching the bonded portions of the three materials of the top sheet 3, the back sheet 4, and the exterior sheet 11. In this case, the body fluid that has flowed out of the absorber 5 can be guided again to the absorber 5 by the hydrophilic topsheet 3.
  • a liquid-impervious sheet made of a material different from that of the back sheet 4 is laminated on the exterior sheet 11 of the pair of side flap portions 10, and the exterior sheet 11 and a laminated portion of the liquid-impermeable sheet are stretched.
  • a sheet material suitable for stretching can be used as the liquid-impermeable sheet, and a breathable film or a high-weight film for pinhole measures can be used as the back sheet 4 below the absorber 5. It becomes possible to arrange suitable materials for each part.
  • each side flap portion 10 four elastic members 12a to 12d are provided in each side flap portion 10, but only one or two rows may be provided on the side end portion of the side flap portion 10, and the number of elastic members may be provided.
  • the arrangement position can be changed as appropriate.
  • the present invention is applied to an open type diaper, but the present invention can be applied to a pant type diaper in the same manner. Moreover, this invention is applicable also to absorbent articles other than a diaper.
  • Japanese Patent Application No. 2008-037919 (filed on February 19, 2008), Japanese Patent Application No. 2008-037922 (filed on February 19, 2008), Japanese Patent Application No. 2009-026246 ( The entire contents of Japanese Patent Application No. 2009-026255 (filed on Feb. 6, 2009) and Japanese Patent Application No. 2009-026255 are incorporated herein by reference.
  • Patent Document 1 discloses a structure in which a top sheet is formed of a liquid-impermeable nonwoven fabric and a melt blow layer is provided between the absorber and the back sheet.
  • Patent Document 2 discloses a structure in which a folded portion is formed on a liquid-impermeable back sheet, and a liquid-impermeable nonwoven fabric is bonded to the folded portion.
  • the folded portion is formed toward the surface sheet side along both side edges in the longitudinal direction of the absorbent body.
  • Patent Document 3 discloses a structure in which side flap portions that extend outward in the same direction from both lateral edges of the absorber are formed by a composite sheet that is separate from the top sheet and the back sheet.
  • the composite sheet is formed by contacting an inner layer made of an impermeable sheet having a thickness of 5 ⁇ m or more and less than 20 ⁇ m with an outer layer made of a nonwoven fabric having a basis weight of 10 to 25 g / m 2 .
  • Patent Document 1 Japanese Patent Laid-Open No. 2001-104372
  • Patent Document 2 Japanese Patent Laid-Open No. 2005-211131
  • Patent Document 3 Japanese Utility Model Laid-Open No. 7-21020 [Disclosure of the Invention]
  • the surface sheet made of a nonwoven fabric has a limit in the leak-proof function.
  • the body fluid permeates the top sheet and causes side leakage from the top sheet.
  • a surface sheet made of a nonwoven fabric bleeds and leaks.
  • an object of the present invention is to provide an absorbent article that can prevent bleeding and leakage and has good air permeability.
  • an absorbent article for example, a diaper 1001A
  • a liquid-permeable top sheet for example, a diaper 1001A
  • back sheet 1004 Between the back side and the abdomen when worn (back side region S11) in the longitudinal direction (longitudinal direction L) from the back side to the abdomen.
  • An absorbent main body (absorbent main body 1002) having a crotch region (inseam region S12), a ventral region (ventral region S13), and a pair of left and right provided on both sides in the width direction (width direction W) of the absorbent main body
  • the side flap portion (side flap portion 1010) is an absorbent article, and is composed of a continuous body in which the lower surface of the absorbent main body and the back surface sheet located on the side flap portion are continuous, and the width of the side flap portion Side flaps between Kotan'en the absorption side edge and having a high moisture-permeable regions having moisture permeability lower surface of the absorbent body (KoTorushime region 1006).
  • the absorbent article can prevent bleeding and leakage.
  • the side flap part is a highly moisture-permeable area
  • FIG. 21 is a cross-sectional view of a diaper 1001A according to Embodiment 2-1 of the present invention.
  • a diaper 1001A which is an absorbent article, includes an absorbent main body 1002 and a pair of left and right side flap portions 1010 provided on both sides of the absorbent main body 1002 in the width direction W.
  • the width direction W of the absorptive main body 1002 is a direction orthogonal to the longitudinal direction L from the back side to the stomach side in the plan view of the diaper 1001A.
  • the absorbent main body 1002 includes at least a liquid-permeable top sheet 1003, a liquid-impermeable back sheet 1004, and an absorber 1005 that is disposed between the top sheet 1003 and the back sheet 1004 and absorbs and holds liquid. It is configured.
  • both end portions in the width direction W are folded so as to wrap the absorber 1005.
  • the folded portion of the top sheet 1003 and the absorber 1005 are joined to the back sheet 1004 by glue such as hot melt.
  • SMS having a basis weight of 10 g / m 2 (a composite nonwoven fabric of spunbond and melt blown, hereinafter referred to as SMS) is used as the top sheet 1003.
  • the absorber 1005 is a laminated body having liquid absorption retention.
  • the absorber 1005 is made of a mixture obtained by mixing absorbent pulp and superabsorbent polymer.
  • the back sheet 1004 is made of a microporous liquid-impermeable film made of a resin containing an inorganic material as a filler.
  • the liquid-impermeable film is a microporous moisture-permeable sheet made of polyethylene containing about 50% by weight of calcium carbonate as a filler and having a basis weight of 22.0 g / m 2. ing.
  • an inorganic material such as barium sulfate can be used as the filler.
  • an olefin-based thermoplastic resin such as polypropylene can be used in addition to polyethylene.
  • the bottom surface of the absorbent main body 1002 and the back sheet 1004 located on the side flap portion 1010 are constituted by a continuous body. That is, the side flap part 1010 is formed in the part which extended the back surface sheet 1004 from the lower surface of the absorber 1005 to the right and left both sides.
  • the side flap portions 1010 are located on both sides of the absorbent body 1005.
  • the side flap portion 1010 is provided with a highly moisture permeable region 1006 that is more permeable than the lower surface of the absorbent main body 1002.
  • the high moisture permeability region 1006 has high moisture permeability. Highly moisture permeable regions 1006 are provided on the left and right sides of the absorbent main body 1002.
  • the moisture permeability of the highly moisture permeable region 1006 is set to be 1.3 to 2.5 times or more than the moisture permeability on the lower surface side of the absorbent main body 1002 so that the liquid does not leak. It should be noted that “setting so that the liquid does not leak” means that the moisture permeability of the high moisture-permeable region 1006 is set within a range where the liquid does not leak.
  • the highly moisture-permeable region 1006 is produced by stretching a side flap portion 1010 made of a liquid-impermeable sheet in the width direction W (hereinafter referred to as a stretching process).
  • the stretching process will be described in detail with reference to a second to second embodiment described later.
  • An exterior sheet 1011 made of a liquid-impermeable sheet is provided on the outer side in the width direction of the side flap portion 1010.
  • the side edge of the exterior sheet 1011 is provided with a gathered portion in which the elastic member 1012 is arranged along the longitudinal direction L in an extended state.
  • the gather part has moisture permeability from the highly moisture permeable area 1006 of the side flap part 1010. Accordingly, the relationship of moisture permeability in the diaper 1001A is “the lower surface of the absorbent main body 1002 ⁇ the highly moisture permeable region 1006 ⁇ the gathered portion”.
  • the diaper 1001A can prevent bleeding and leakage of body fluid and the like.
  • the liquid-impermeable sheet (back surface sheet 1004) is stretched by the stretched width.
  • the diameter of the micro-opening hole by the filler is increased and the moisture permeability is increased. Since the air permeability and the moisture permeability increase due to the high moisture permeability, the diaper 1001A can prevent the diaper 1001A from being steamed. Furthermore, since the material is softened by the stretching process, the wearer's feeling of use is improved.
  • FIG. 22 is a plan view of the diaper 1001B in a developed state.
  • 23 is a cross-sectional view taken along line A1-A1 of FIG. 24 is a cross-sectional view taken along line B1-B1 of FIG. 25 and 26 are plan views of the diaper 1001B showing the distance of high moisture permeability.
  • FIG. 27 is a cross-sectional view of the stretching apparatus.
  • the diaper 1001B includes an absorbent main body 1002 and a pair of left and right side flap portions 1010 provided on both sides in the width direction W of the absorbent main body 1002, as in the case of the 2-1 embodiment.
  • the absorbent main body 1002 includes at least a liquid-permeable top sheet 1003, a liquid-impermeable back sheet 1004, and an absorber 1005 that absorbs and holds the liquid.
  • the absorber 1005 is disposed between the top sheet 1003 and the back sheet 1004.
  • the absorptive main body 1002 has a dorsal region S11, a crotch region S12, and a ventral region S13 along the longitudinal direction L from the dorsal side to the ventral side.
  • the absorbent main body 1002 covers the wearer's back side, crotch side, and abdomen side.
  • the back sheet 1004 is formed by adhering a liquid-impermeable sheet 1013 and an exterior sheet 1011.
  • the elastic member 1012 is disposed in an extended state on the side edge of the side flap portion 1010.
  • the overlapping portion of the exterior sheet 1011 and the liquid impermeable sheet 1013 is stretched in the width direction W.
  • the stretched portion is highly permeable and becomes a highly permeable region 1006.
  • the top sheet 1003 is a liquid-permeable sheet.
  • a hydrophilic nonwoven fabric, a woven fabric, an apertured plastic film, or the like, or a hydrophobic nonwoven fabric having an aperture can be used.
  • SMS having a basis weight of 10 g / m 2 is used as the top sheet 1003.
  • the liquid-impermeable sheet 1013 in the back sheet 1004 is made of a microporous liquid-impermeable film made of a resin containing an inorganic material as a filler.
  • the liquid-impermeable sheet 1013 may be a moisture-permeable liquid-impermeable film or a sheet obtained by bonding a nonwoven fabric to this liquid-impermeable film.
  • the liquid-impermeable sheet 1013 includes a microporous moisture-permeable sheet made of polyethylene containing approximately 50% by weight of calcium carbonate as a filler and having a basis weight of 22.0 g / m 2. Yes.
  • an inorganic material such as calcium carbonate or barium sulfate can be used.
  • Resins used for the liquid-impermeable sheet 1013 include polyethylene and olefinic thermoplastic resins such as polypropylene.
  • the exterior sheet 1011 in the back sheet 1004 is a liquid-impermeable sheet.
  • an SMS having a basis weight of 13 m / m 2 is used.
  • the exterior sheet 1011 is arranged from the side of the absorbent main body 1002 to the back surface.
  • Elastic members 1012 are arranged in an extended state on both left and right edges of the liquid-impermeable sheet 1013.
  • the liquid-impermeable sheet 1013 extends to the outside of the side portion of the absorber 1005.
  • the liquid-impermeable sheet 1013 and the exterior sheet 1011 are bonded with a heat-sensitive adhesive (hereinafter referred to as HMA) or the like.
  • HMA heat-sensitive adhesive
  • the absorbent body 1005 is a liquid absorbent retaining laminate.
  • the absorber 1005 is made of a mixture obtained by mixing absorbent pulp and superabsorbent polymer.
  • a waist flap portion 1014 is provided outside the side flap portion 1010 in the width direction.
  • the waist flap portion 1014 is made of a liquid permeable or liquid impermeable sheet.
  • the waist flap portion 1014 has a locking member 1015 such as a mechanical lock or an adhesive tape so that the absorbent article 1001B can be fixed on the ventral side.
  • the exterior sheet 1011 and the liquid-impermeable sheet 1013 are bonded together with HMA or the like to form the back sheet 1004.
  • two polyurethane-based elastic yarns 470 dtex as one side of the elastic member 1012 are arranged on the exterior sheet 1011 in a state of being stretched by 2.2 times, and the elastic yarn is wound around the exterior sheet 1011.
  • the portion where the exterior sheet 1011 overlaps the liquid-impermeable sheet 1013 in the central region in the longitudinal direction L of the side flap portion 1010 was stretched in the width direction W.
  • the absorber 1005 was disposed on the back sheet 1004 after being stretched. Procedures other than this processing procedure may be used.
  • the highly moisture permeable region 1006 provided in the side flap portion 1010 will be described. As shown in FIGS. 22 and 23, the highly moisture permeable region 1006 is formed on the back sheet 1004 including the liquid impermeable sheet 1013 and the exterior sheet 1011. The highly moisture permeable region 1006 is provided between the width direction edge of the side flap portion 1010 and the side edge of the absorber 1005. The highly moisture permeable region 1006 is formed by stretching the back sheet 1004.
  • FIG. 25 shows a part to be stretched.
  • the back sheet 1004 is further stretched to a width of 20 mm on the outer side in the width direction on the basis of a position 5 mm away from the side of the absorber 1005 in the outer side in the width direction.
  • the longitudinal direction L of the absorbent body 1005 is stretched over the entire length. Note that the length in the longitudinal direction L of the portion to be stretched is not a constraint because the design differs depending on the length of the diaper, the width of the absorber 1005, and the like.
  • the exterior sheet 1011 and the liquid-impermeable sheet 1013 are bonded with HMA or the like to form the back sheet 1004, and then stretched using a stretching apparatus 1030 shown in FIG.
  • the stretching device 1030 has a pair of stretching blade rows 1031 that face each other and can be engaged with each other.
  • the depth of the blade is 2.5 mm
  • the pitch between the upper and lower blades is 1.25 mm
  • the number of upper and lower blades is 17.
  • Stretching is performed on a part of the side flap portion 1010 with the set temperature of the stretching blade row portion 1031 being 90 ° C.
  • the highly moisture permeable region 1006 is stretched 1.8 times as compared with before stretching. Specifically, in the high moisture permeability region 1006, the moisture permeability average value 1935 (Pa ⁇ 24 hrs) before stretching is increased by about 1.65 times to 3191 (Pa ⁇ 24 hrs) after stretching ( (See Table 1).
  • the back sheet 1004 is softened by heating the blade, and it is easy to reduce the basis weight, so that it is difficult to generate pinholes.
  • An appropriate heating temperature is preferably 20 to 30 degrees or less of the melting point of the material. Heating at a temperature exceeding the material melting point of the liquid-impermeable sheet 1013 is not preferable because the liquid-impermeable sheet 1013 melts and breaks.
  • the back sheet 1004 is coated with a moisture permeable film having a diameter of 15 mm and a basis weight of 5 g / m 2 using a spiral spray, and having a basis weight of 22.0 g / m 2.
  • a liquid-impermeable sheet 1013) and a liquid-permeable SMS (exterior sheet 1011) having a basis weight of 13 g / m 2 are bonded together. Table 1 shows the stretching results.
  • FIG. 25 and FIG. 26 show the distance for stretching (high moisture permeability).
  • the width of the side flap portion 1010 to be stretched is the width X from the side edge of the absorbent body 1005 to the vicinity of the inner side of the elastic member 1012 disposed closest to the absorbent body 1005 of the side flap portion 1010 with the diaper 1001B expanded. (FIG. 25).
  • the width Y is from the side edge of the absorber 1005 to the inner side of the elastic member 1012 disposed closest to the absorber 1005 of the side flap portion 1010.
  • the width Y is preferably in the range of 1.5 to 3.0 times the width X.
  • the width Y is less than 1.5 times the width X, the stretch width of the highly moisture permeable region 1006 is small, so that the height cannot be secured even when the side flap portion 1010 stands up when the diaper is mounted. . For this reason, a gap is generated between the skin and the elastic member 1012 arrangement portion, and excrement may leak from the gap.
  • the width Y is larger than 3.0 times the width X, the stretch width of the highly moisture permeable region 1006 is large, so that the moisture permeability increases by stretching. As a result, the material is easily damaged, and there is a high possibility that the material will be damaged, such as tearing or opening. If the material is damaged, excrement may leak from the damaged part.
  • the moisture permeability after stretching is preferably 1.3 to 2.5 times or more of the moisture permeability before stretching.
  • the moisture permeability before the drawing process also means the moisture permeability on the lower surface side of the absorber.
  • the difference in moisture permeability before and after the stretching process is less than 1.3 times, since the change in moisture permeability is small, there is almost no change from before the stretching process, and the effect of reducing stuffiness in the diaper is low.
  • the liquid-impermeable sheet 1013 suitable for stretching is preferably one having a film breaking elongation of 750% or more.
  • a film having a breaking elongation of less than 750% pinholes are easily generated by stretching. The occurrence of pinholes can cause leakage.
  • the back sheet 1004 is stretched by the stretched width by stretching the side flap portion 1010.
  • the hole diameter of the micro-opening by the filler is increased, and the highly moisture permeable region 1006 that has been subjected to the stretching process is highly moisture permeable.
  • region 1006 reduces the basic weight of material, and a moisture permeability increases compared with the area
  • the highly moisture permeable region 1006 is highly moisture permeable, so that the material constituting the highly moisture permeable region 1006 is softened.
  • the diaper 1001b can keep the arrangement surface of the elastic member 1012 higher than the surface of the liquid-permeable sheet by the stretched width. For this reason, as shown in FIG. 24, the diaper 1001b can enlarge the pocket 1016 which accommodates a bodily fluid compared with the diaper which does not perform an extending
  • the diaper 1001b bonds the liquid-impermeable sheet 1013 and the exterior sheet 1011 together to form the back sheet 1004, and the side flaps on the side edge of the absorber 1005 in the back sheet 1004 A highly moisture permeable region 1006 that is highly permeable to moisture is disposed in the portion 1010.
  • the diaper 1001b has a structure in which a film material is disposed on the side flap portion 1010, the water pressure resistance is increased, and leakage of body fluid can be prevented.
  • the diaper 1001b improves air permeability and moisture permeability due to the effect of increasing moisture permeability, the diaper 1001b can prevent the diaper from becoming stuffy and causing skin troubles.
  • a flexible region is formed in the side flap portion 1010 located on the inner surface of the diaper 1001b by stretching. Since the inner surface of the diaper 1001b is soft, the diaper 1001b can reduce discomfort compared to a diaper that has not been stretched.
  • the diaper 1001b is easy to fit on the body and excrement is difficult to leak out.
  • the diaper 1001b does not have a high moisture permeable area on the lower surface of the absorbent body 1005 where the body pressure is highest during wearing, and the lower surface of the absorbent body 1005 has a higher water pressure resistance than the high moisture permeable area 1006. is doing. Therefore, even when the diaper 1001b is worn for a long time, the diaper 1001b does not bleed out excrement from the lower surface of the absorbent body 1005 or leak moisture, so the underwear or the futon is not wetted.
  • the diaper 1001b can provide different effects while arranging continuous materials in the same width direction W on the lower surfaces of the side flap portion 1010 and the absorber 1005.
  • the side flap portion 1010 is excellent in air permeability and moisture permeability
  • the lower surface of the absorber 1005 is excellent in water pressure resistance.
  • the liquid-impermeable sheet 1013 constituting the back sheet 1004 and the exterior sheet 1011 are preferably bonded with HMA using a spiral spray.
  • Adhering with HMA using a spiral spray allows materials to be partially bonded together, resulting in a low density bonding area.
  • the adhesion area is low density, the elongation of the liquid-impermeable sheet 1013 during stretching is not easily hindered by the exterior sheet 1011, and thus material damage due to stretching is unlikely to occur.
  • the bonding area between the materials to be bonded is high density, the stretching of the liquid-impermeable sheet 1013 during stretching is hindered by the exterior sheet 1011. That is, if the stretching process is performed in a state where the adhesion area is high density, the material is likely to be damaged.
  • the elastic member 1012 may be disposed in a region where the side flap portion 1010 of the back sheet 1004 is not stretched.
  • the number of elastic members 1012 is not limited, and may vary depending on the function and design of the diaper.
  • the elastic members arranged closest to the absorber 1005 1012 is preferably arranged in a non-high moisture-permeable region near the boundary between the high moisture-permeable region 1006 and the non-high moisture-permeable region.
  • the diaper 1001b can improve sealing performance.
  • FIG. 28 shows a second to third embodiment of the present invention.
  • a back sheet 1004 is formed by bonding a liquid-impermeable sheet 1013 and an exterior sheet 1011.
  • the top sheet 1003 covers the absorber 1005 and extends sideways.
  • a hydrophilic liquid-permeable sheet is used as the top sheet 1003, a hydrophilic liquid-permeable sheet is used.
  • the top sheet 1003, the liquid-impermeable sheet 1013, and the exterior sheet 1011 are bonded.
  • the bonded portion is stretched (highly moisture permeable). That is, the highly moisture permeable region 1006 is formed in the liquid-impermeable sheet 1013, the exterior sheet 1011, and the top sheet 1003.
  • the diaper 1001C absorbs body fluid that has flowed from the side of the absorbent body 1005 to the highly moisture permeable region 1006 of the side flap portion 1010 with a hydrophilic liquid-permeable sheet (surface sheet 1003). It can be guided to the body 1005 again.
  • FIG. 29 shows Embodiment 2-4 of the present invention.
  • the side flap portions 1017 and 1018 are arranged in two rows on each side, and stretching processing (high moisture permeability) is performed on each of the two rows of side flap portions 1017 and 1018.
  • stretching processing high moisture permeability
  • the diaper 1001D can double-act the leakproof function.
  • the liquid-impermeable sheet 1013 which comprises the back surface sheet 1004 is covered by the side flap 1018, the diaper 1001D also becomes favorable to the touch.
  • FIG. 30 shows Embodiment 2-5 of the present invention.
  • the side flap portion 1010 is formed inwardly, and is similarly stretched (highly moisture permeable). Since the diaper 1001E has such a structure, the surface of the absorbent body 1005 is covered with the side flap portion 1010. Therefore, the area of the absorbent body 1005 that contacts the skin can be reduced, and the excrement returns to the skin. Can be reduced.
  • FIG. 31 shows a 2-6 embodiment of the present invention.
  • the central part 1006a in the central part 1006a and the end part 1006b along the longitudinal direction L of the high moisture permeable area 1006, the central part 1006a is highly permeable in a wider area than the end part 1006b. ing. Since the central portion 1006a is highly moisture permeable in a wider area than the end portion 1006b, the width of the pocket of the central portion 1006a is wider than the width of the pocket of the end portion 1006b. That is, the diaper 1001F can keep the volume of the crotch region where the excrement easily collects wide. Therefore, the diaper 1001F can suppress leakage from the diaper.
  • the heights of the pushing blades of the end portion 1006b and the central portion 1006a are changed. That is, the central portion 1006a can be made to have higher moisture permeability than the end portion 1006b by making the pushing height of the blade of the central portion 1006a higher than that of the end portion 1006b. Further, the central portion 1006a is made to be highly permeable in a wider area in the width direction W than the end portion 1006b, that is, by changing the original area to be highly permeable to the central portion 1006a and the end portion 1006b, the central portion 1006a is changed. The moisture permeability can be higher than that of the end portion 1006b.
  • the diaper has a highly moisture permeable (stretched) portion on the side of the absorbent body 1005, but is not limited to an open type diaper.
  • the diaper may be a pants type in which the diaper body is folded in half at the center in the longitudinal direction and both the back side and the abdomen side are locked and fixed. According to such a diaper, since the volume of the crotch part where excrement tends to accumulate can be kept wide, leakage from the diaper can be suppressed.
  • the present invention is not limited to the above-mentioned diaper, but can be applied to absorbent articles such as sanitary napkins and urine pads.
  • liquid-impermeable sheet 1013 used for the sheet 1004 a film made of polyethylene containing about 50% by weight of calcium carbonate as a filler is used.
  • a film having moisture permeability may be used by stretching in the course of manufacturing the film to form a microporous material before the moisture permeability at the time of diaper processing.
  • a film is a film made of polyethylene containing 20 to 70% by weight of calcium carbonate as a filler and having a basis weight of 15 to 40 g / m 2.
  • a stretched, moisture-impermeable film can also be used.
  • the back sheet 1004 is stretched by the width stretched by the stretching process performed at the time of processing the diaper, and the film is provided with moisture permeability by forming fine holes with the filler.
  • a moisture permeable film is used as the film.
  • the resin used for the moisture permeable film a resin obtained by molding a polyethylene resin, a polypropylene resin, or a fluororesin into a thickness of 20 to 40 ⁇ m by, for example, a melt film forming method is used.
  • the diaper 2100 includes a liquid-permeable top sheet 2101a, a liquid-impermeable back sheet (not shown), and an absorber 2101c that absorbs and holds liquid.
  • An absorptive main body 2101 is provided.
  • the absorber 2101c is disposed between the top sheet 2101a and a back sheet (not shown).
  • the absorbent main body 2101 has a dorsal region S21, a crotch region S22, and a ventral region S23 in the longitudinal direction from the dorsal side to the abdominal side when worn, and covers the abdominal side from the dorsal side centering on the wearer's inseam.
  • side flap portions 2110 are provided by extending a top sheet 2101 a and a back sheet (not shown).
  • An elastic member 2120 is provided on the outer edge of the crotch region S22 of each side flap portion 2110 in an extended state along the longitudinal direction. Further, a folded portion 2130 is provided in the ventral region S23 of each side flap portion 2110.
  • each side flap portion 2110 When the wearer wears the diaper 2100 of the conventional example, the outer circumference of each side flap portion 2110 is brought into close contact with the wearer's leg due to the contraction of each elastic member 2120, and the width dimension of the crotch region S22 of each side flap portion 2110 Is larger than the width dimension of the ventral region S23, so that a space, a so-called pocket, is formed on the inseam side of the wearer. By this pocket, urine, feces and the like excreted from the wearer can be reliably held without side leakage.
  • the diaper 2150 includes an absorbent main body 2151 that includes a liquid-permeable top sheet 2151a, a liquid-impermeable back sheet 2151b, and an absorbent body 2151c that absorbs and holds liquid. It has.
  • the absorber 2151c is disposed between the top sheet 2151a and the back sheet 2151b.
  • the absorbent main body 2151 has a dorsal region S21, a crotch region S22, and a ventral region S23 in the longitudinal direction from the back side to the abdomen when worn, and covers the abdomen from the back side with the crotch of the wearer as the center.
  • a pair of elastic members 2152 are provided in an extended state.
  • Each elastic member 2152 is provided so as to swell outward in the crotch region S22.
  • interval of a pair of elastic member 2152 is narrow in back side area
  • Patent Document 4 Japanese Patent Application Laid-Open No. 62-199802 (Page 6, FIGS. 4 and 5)
  • Patent Document 5 JP-A-4-242645 (page 8, FIG. 1, FIG. 2) [Disclosure of the Invention]
  • a pocket is formed in the crotch region S22 when worn, and extra materials are required for the width direction of the diapers 2100 and 2150 as compared with the case where no pocket is formed.
  • the present invention is to form a so-called pocket on the inseam of the wearer, and an absorbent article that can reduce the amount of materials used, facilitate the processing during manufacturing, and thus reduce the manufacturing cost.
  • the purpose is to provide.
  • a feature of the present invention that achieves the above object is that a liquid-permeable top sheet (top sheet 2003), a liquid-impermeable back sheet (back sheet 2004), and a liquid that is disposed between the top sheet and the back sheet, And a back region (back region S21), a crotch region (inseam region) in the longitudinal direction (longitudinal direction L) from the back side to the abdomen when worn.
  • an absorbent main body (absorbent main body 2002) having a ventral region (ventral region S23), and a pair of left and right side flap portions (sides) provided on both sides in the width direction (width direction W) of the absorbent main body
  • An absorbent article e.g., an elastic member (e.g., elastic member a)
  • an elastic member e.g., elastic member a
  • a crotch-side stretched region for example, a crotch-side stretched region 2013 stretched in the width direction between the absorbent main body of the side flap portion in the crotch region and the outermost elastic member.
  • each side flap portion when the wearer wears, the outer circumference of each side flap portion is in close contact with the wearer's leg due to the contraction of each elastic member, and the crotch region of each side flap portion can be expanded. Is larger than the width dimension of the side flap portions in the back side region and the abdominal side region due to the pair of crotch side extension regions, so that a so-called pocket is formed in the wearer's crotch region. Since each crotch side extension region is provided by extending the crotch region of each side flap portion in the width direction, the crotch side extension region can be formed of a material having the same width as a diaper that does not form a so-called pocket in the crotch region.
  • a pocket can be formed on the crotch side of the wearer without providing a fold at each side flap and without providing an elastic member in a curved shape at each side flap. From the above, it is possible to reduce the materials used, facilitate the processing during manufacturing, and consequently reduce the manufacturing cost.
  • each side flap part covering the underbody near the wearer's crotch are thin and soft crotch side extension regions, the side flap part has a low feeling of wearing discomfort, and has good followability to the movement of the wearer's legs.
  • advantages such as being easy to stand up with respect to the absorbent main body and being able to adhere to the suspension without excessive tightening of the outer periphery of each side flap portion.
  • FIG. 33 to 38 show a 3-1 embodiment of the present invention.
  • FIG. 33 is a plan view of the diaper 2001A in a developed state.
  • 34 is a cross-sectional view taken along line A2-A2 of FIG. 35 is a cross-sectional view taken along line B2-B2 of FIG.
  • FIG. 36 is a cross-sectional view of the diaper 2001A in a worn state.
  • FIG. 37 is a cross-sectional view of the main part of the stretching apparatus.
  • FIG. 38A is a plan view before the center of the crotch region of the side flap portion of the diaper 2001A is pulled outward.
  • FIG. 38B is a plan view of a state in which the center end portion of the crotch region of one side flap portion of the diaper 2001A is pulled outward.
  • a diaper 2001A as an absorbent article includes an absorbent main body 2002, a pair of left and right side flap portions 2010 provided on both sides in the width direction W of the absorbent main body 2002, and a pair of A pair of dorsal waist flaps 2020 provided at both ends in the width direction W on the back side of the side flaps 2010 and a pair of ventral sides provided at both ends in the width direction W on the ventral side of the pair of side flaps 2010 A waist flap 2021.
  • the absorbent main body 2002 includes at least a liquid-permeable top sheet 2003, a liquid-impermeable back sheet 2004, and an absorber 2005 that is disposed between the top sheet 2003 and the back sheet 2004 and absorbs and holds liquid. Composed.
  • the diaper 2001A has a back side and a ventral side, and is provided with a back side region S21, a crotch region S22, and a ventral side region S23 in this order along the longitudinal direction L from the back side to the ventral side.
  • the absorbent main body 2002 has a back side region S21, a crotch region S22, and a ventral region S23 in the longitudinal direction L from the back side to the abdominal side when worn, and covers the wearer's back side, crotch side, and ventral side.
  • the top sheet 2003 is folded so that both end portions in the width direction W wrap around the absorber 2005.
  • the portion of the top sheet 2003 folded in this way and the absorber 2005 are joined to the back sheet 2004 by glue such as hot melt.
  • the top sheet 2003 is a hydrophilic nonwoven fabric, a woven fabric, an apertured plastic film, a hydrophobic nonwoven fabric having an aperture, a laminated nonwoven fabric manufactured by a spunbond method / melt blow method / spunbond method having a basis weight of 10 g / m 2 (hereinafter referred to as a “non-woven fabric”) , Written as SMS).
  • the back sheet 2004 is formed of a moisture permeable or non-moisture permeable film, a sheet obtained by bonding a nonwoven fabric to such a film, or the like.
  • the absorber 2005 is a laminated body having liquid absorption retention.
  • Absorber 2005 is formed by mixing absorbent pulp and superabsorbent polymer.
  • the pair of side flap portions 2010 is composed of a back sheet 2004 extended from both sides in the width direction W of the absorbent main body 2002 and a liquid-impermeable exterior sheet 2011.
  • the exterior sheet 2011 is overlaid on the back surface of the absorbent main body 2002 and the back sheet 2004.
  • the back sheet 2004 and the exterior sheet 2011 are joined with a paste such as hot melt.
  • the exterior sheet 2011 is formed to have a longer dimension in the width direction W than the back sheet 2004.
  • each side flap portion 2010 and the partial region of the back side region S21 and the abdomen side region S23 continuous to the crotch region S22 are stretched in the longitudinal direction L in four rows. 2012d is provided.
  • the outer three rows of elastic members 2012a to 2012c are provided on both sides of the exterior sheet 2011 formed longer in the width direction W than the back sheet 2004.
  • the innermost elastic member 2012d is disposed at a substantially central position between the side edge of the absorbent main body 2002 and the outermost elastic member 2012a.
  • the elastic member 2012d is provided between the exterior sheet 2011 and the back sheet 2004.
  • the elastic members 2012a to 2012d are, for example, polyurethane elastic yarns.
  • a crotch side extended region 2013 extended in the width direction W is provided in the crotch region S22 of each side flap portion 2010 and between the absorbent main body 2002 and the elastic member 2012a located on the outermost side.
  • the crotch side extension region 2013 is provided between the absorbent main body 2002 and the third row of elastic members 2012c from the outside.
  • Each crotch-side stretch region 2013 is a region having a lower basis weight than other regions by stretching.
  • Each crotch-side stretch region 2013 is stretched in a range of 1.5 to 3.0 times as compared with the width before stretching.
  • Each inseam extending region 2013 has transparency that allows internal excrement to be visually recognized from the outside when worn. That is, the transmittance of each crotch-side stretched region 2013 is a transmittance that allows transmission from the outside to the inside. The light transmittance rises by 3% or more due to stretching, and if the light transmittance is 61% or more (measured according to JIS standard K7105), the internal excrement can be visually recognized from the outside.
  • region 2013 of this embodiment is provided in the width direction W of the side flap part 2010 between the absorptive main body 2002 and the elastic member 2012a located in the outermost side.
  • Each crotch side extended region 2013 is provided in the longitudinal direction L of the side flap portion 2010 over the entire range of the crotch region S22.
  • Each crotch side extended region 2013 does not extend to the dorsal region S21 or the ventral region S23 in this embodiment. A specific method for producing the crotch-side stretch region 2013 will be described in detail below.
  • the waist flap portion is composed of a pair of back side waist flap portions 2020 and a pair of ventral side waist flap portions 2021.
  • One end side of the pair of back side waist flap portions 2020 is fixed to the back side region S21 of the pair of side flap portions 2010.
  • a locking portion 2022 is provided on the distal end side of each back side waist flap portion 2020.
  • Each locking portion 2022 is a hook-and-loop fastener that locks with a mechanical locking force or an adhesive tape that locks with an adhesive force.
  • the material of the ventral waist flap 2021 is a sheet material having at least a non-woven surface.
  • the side flap portion 2010 is applied using a spiral spray so that a heat-sensitive adhesive (for example, hot melt, etc., hereinafter referred to as HMA) has a diameter of 15 mm and a basis weight of 5 g / m 2.
  • HMA heat-sensitive adhesive
  • the back sheet 2004 and the exterior sheet 2011 are bonded together.
  • the back sheet 2004 is a non-breathable film having a basis weight of 23.5 g / m 2 .
  • the exterior sheet 2011 is an SMS having a basis weight of 13 g / m 2 .
  • the stretching device 2030 that forms the crotch-side stretching region 2013 has a pair of stretching blade rows 2031 that face each other and can be engaged with each other.
  • Each stretched blade row portion 2031 has a blade depth of 2.5 mm, a pitch between a pair of blades of 1.25 mm, and a number of blades of 17.
  • the stretching apparatus 2030 performs a stretching process by setting the set temperature of the stretching blade row portion 2031 to 100 ° C. By stretching in this way, the crotch-side stretch region 2013 can be stretched 1.8 times as compared with before stretching.
  • the crotch-side stretched region 2013 is alternately provided with a dense portion with a small stretch amount and a rough portion with a large stretch amount in the width direction W of the side flap portion 2010.
  • the stretching amount can be varied by appropriately changing the above-mentioned conditions.
  • the width W21 of the crotch-side stretched region 2013 in FIG. 38 (a) is 1.5-3. It is in the range of 0 times.
  • the width W22 is the width of the crotch-side stretched region 2013 in a state in which the center end of the crotch region S22 of one side flap portion 2010 is pulled outward. That is, the width W22 can be stretched by a stretch ratio (1.5 to 3.0 times) with respect to the width W21. Accordingly, the crotch region S22 of each side flap portion 2010 can be expanded at the maximum by the stretch ratio (1.5 to 3.0 times) compared to the width dimension of the back region S21 and the ventral region S23.
  • the stretching amount is adjusted depending on the type of the sheet material, and the transmittance that the inside transmits from the outside is obtained.
  • each side flap portion 2010 When the wearer wears the diaper 2001A having the above-described configuration, as shown in FIG. 36, the outer periphery of each side flap portion 2010 is brought into close contact with the wearer's legs due to contraction of the elastic members 2012a and 2012b. Moreover, since the stretchable width dimension of the crotch region S22 of each side flap part 2010 is larger than the width dimension of the side flap part 2010 of the back side region S21 or the abdominal side region S23 by the pair of crotch side stretched regions 2013, the wearer A space, so-called pocket P, is formed on the crotch side.
  • Each crotch side extension region 2013 is formed by extending the crotch region S22 of each side flap portion 2010 in the width direction W. For this reason, each crotch side extension area
  • region 2013 can be formed with the material of the same width as the diaper which does not form what is called a pocket P in crotch area S22.
  • the diaper 2001A does not provide the side flaps 2010 with the folding as in the conventional example, and does not provide the elastic members 2012 in the curved shape in the side flaps 2010 as in the other conventional examples.
  • the pocket P can be formed on the crotch side of the wearer. As described above, the diaper 2001A can reduce the amount of materials used, facilitate the processing during manufacturing, and thus reduce the manufacturing cost.
  • surroundings near a wearer's inseam is thin and soft crotch side extending
  • There are advantages such as being able to improve the followability to movement, being easy to stand up with respect to the absorbent main body 2002, and being able to adhere to the suspension without overtightening the outer periphery of each side flap portion 2010.
  • each crotch-side stretched region 2013 is located in a region closer to the absorbent main body 2002 than a center line that bisects in the width direction W between the absorbent main body 2002 side edge and the outermost elastic member 2012a.
  • the diaper 2001A When the diaper 2001A is worn, it begins to bend from a position having a difference in rigidity, that is, a boundary position between the absorbent main body 2002 and the side flap portion 2010. In this embodiment, this portion is a flexible crotch-side stretch region 2013. Therefore, the rising characteristics are good, and so-called pockets P are easily formed.
  • the diaper 2001A includes a dorsal waist flap portion 2020 and an abdominal waist flap portion 2021 provided so as to protrude from both sides of the dorsal region S21 and ventral region S23 of the pair of side flap portions 2010. And each crotch side extending
  • region 2013 is provided only in the range of crotch area
  • each crotch-side stretch region 2013 has transparency that allows internal excrement to be visually recognized from the outside when worn, the diaper 2001A can check whether or not there is excrement inside the diaper 2001A through the crotch-side stretch region 2013. It can be confirmed from. For this reason, the diaper 2001A can easily determine the replacement time and the like.
  • each crotch-side stretch region 2013, a dense portion having a small stretch amount and a rough portion having a large stretch amount are alternately provided along the width direction W of the side flap portion 2010. Therefore, in the manufacturing process of the diaper 2001A, the crotch-side stretched region 2013 is alternately folded by the dense portion and the rough portion, so that the outer edge of each side flap portion 2010 does not protrude and becomes linear. For this reason, the diaper 2001A has good handleability in the manufacturing process, product packaging process, and the like.
  • each crotch-side stretch region 2013 is stretched in a range of 1.5 to 3.0 times as compared with that before stretching.
  • the stretch amount of the crotch side stretch region 2013 is less than 1.5 times, the rising dimension of the side flap portion 2010 is so small that the elastic member 2012 may not adhere to the skin.
  • the stretch amount of the crotch side stretch region 2013 exceeds 3.0 times, the material of the side flap portion 2010 is greatly damaged by stretching, and material damage such as tearing or perforation may occur.
  • the stretch amount of the crotch side stretch region 2013 is in the range of 1.5 to 3.0 times, a space, so-called pocket, can be reliably formed in the crotch region S22 of the diaper 2001A without fear of material damage.
  • the side flap portion 2010 is configured by two layers of the exterior sheet 2011 and the backsheet 2004. However, each side flap portion 2010 may be configured by one layer of the backsheet 2004. . If the side flap part 2010 is comprised by 1 layer of the exterior sheet
  • the side flap portion 2010 may be configured by three layers of an exterior sheet 2011, a back sheet 2004, and a top sheet 2003. If the side flap part 2010 is comprised by three layers, the exterior sheet 2011, the back sheet 2004, and the top sheet 2003, the intensity
  • a sheet made of a different sheet material may be used at a position corresponding to the crotch-side stretch region 2013 and other positions. For example, if a sheet material suitable for stretching is used at the crotch stretch region 2013 and a sheet material suitable as a back sheet for the absorbent main body 2002 is used at other locations, the stretch processability and liquid The back sheet 2004 is excellent in both impermeability.
  • FIG. 39 is a cross-sectional view of a diaper 2001B according to Embodiment 3-2 of the present invention.
  • the diaper 2001B according to the third-second embodiment is different from the third-first embodiment in the configuration of the absorbent main body 2002 and the crotch-side stretch region 2013a of each side flap portion 2010.
  • the configuration is different. That is, the top sheet 2003 and the back sheet 2004 of the absorbent main body 2002 are joined only at the central portion in the width direction W by the joint portion 2006 and are not joined at both end portions in the width direction W. And each crotch side extending
  • each crotch-side stretch region 2013a is provided so as to extend to a region overlapping with the absorbent main body 2002. Therefore, since the width dimension of the crotch-side stretch region 2013a can be increased, the diaper 2001B is The space formed on the crotch side of the diaper 1D, that is, the so-called pocket can be deepened.
  • FIG. 40 is a cross-sectional view of a diaper 2001C according to Embodiment 3-3 of the present invention.
  • the diaper 2001C according to the 3-3 embodiment is different from the 3-1 embodiment only in the configuration of each side flap portion 2010.
  • Each side flap portion 2010 is branched into two, an inner flap portion 2010a and an outer flap portion 2010b, outside the side flap portion 2010 in the width direction W.
  • a sheet material having a good touch is used for the inner flap portion 2010a.
  • Elastic members 2012a, 2012b, 2012c, and 2012e are provided at the distal ends of both the inner flap portion 2010a and the outer flap portion 2010b in an expanded state. That is, when the diaper 2001C is worn, since the side flaps 2010 are in close contact with the suspension, the diaper 2001C can more reliably prevent side leakage.
  • the diaper 2001C has good touch because the inner flap portion 2010a is a sheet material with a good touch.
  • the elastic members 2012a, 2012b, 2012c, and 2012e are provided at the distal ends of both the inner flap portion 2010a and the outer flap portion 2010b.
  • An elastic member in an extended state may be provided only on the top.
  • the diaper 2001C has a so-called inversion solid gathering configuration.
  • FIG. 41 is a plan view showing a developed state of a diaper 2001D according to the third to fourth embodiments of the present invention.
  • each crotch-side stretch region 2013b has a width when the stretch region portion at the center position in the longitudinal direction L in the crotch region is stretched in the width direction W as compared to the stretch region portions at both ends in the longitudinal direction of each side flap portion 2010. It is provided to increase the dimensions. This is because the crotch-side stretched region 2013b has a width dimension that is stretched in the longitudinal direction L. Specifically, the width dimension of the extending region at the center position in the longitudinal direction L is set longer than the width of the extending region at both ends in the longitudinal direction.
  • the end of the crotch-side stretched region 2013b is constrained to a location that is not the crotch-side stretched region 2013b, so that the rising dimension at the end is small and the pocket has the largest rising dimension at the center. Therefore, the crotch-side stretched region 2013b can be made lean when forming the pocket.
  • the crotch-side stretched region 2013b has the same width dimension that has been stretched over the longitudinal direction L, and by varying the stretch amount per unit length, the stretched region portion at the center position in the longitudinal direction L is You may provide so that the width dimension at the time of extending (at the time of wear) may become large compared with the extending
  • FIG. 42 is a cross-sectional view of a diaper 2001E according to Embodiment 4-5 of the present invention.
  • the diaper 2001E according to the third to fifth embodiments is different from the third to first embodiments only in the configuration of a pair of crotch-side stretch regions 2013A.
  • Each crotch side extension region 2013A is provided to extend not only to the crotch region S22 of each side flap portion 2010 but also to the back side region S21 and the ventral side region S23. However, the back end and the abdominal end of the crotch-side stretch region 2013A do not reach the back end and the abdomen end of the side flap portion 2010.
  • the diaper 2001E since a space formed inside the diaper 2001E, so-called pockets, are formed in the back side region S21 and the ventral region S23 in addition to the crotch region S22, the diaper 2001E temporarily stores the excrement. Therefore, a large amount of excrement can be prevented more reliably.
  • the diaper 2001E is effective in preventing side leakage of both feces and urine.
  • each crotch side extended region 2013A extends from the crotch region S22 of each side flap portion 2010 only to the back side region S21.
  • the diaper is particularly effective in preventing lateral leakage of feces since a space formed inside the diaper, a so-called pocket, is also formed in the back region S21 in addition to the crotch region S22. .
  • each crotch-side stretch region 2013A extends from the crotch region S22 of each side flap portion 2010 only to the ventral region S23.
  • the diaper has a space formed inside the diaper, so-called pockets, which are also formed in the ventral region S23 in addition to the crotch region S22. It is.
  • each embodiment four rows of elastic members 2012a to 2012d are provided in each side flap portion 2010.
  • the elastic members may be provided in only one row or two rows at the side end portion of the side flap portion 2010. .
  • the number and arrangement positions of the elastic members can be changed as appropriate.
  • the present invention is applied to an open type diaper, but the present invention can be applied to a pant type diaper in the same manner. Moreover, this invention is applicable also to absorbent articles other than a diaper.
  • the diaper 3100 is disposed between a liquid-permeable top sheet 3101a, a liquid-impermeable back sheet (not shown), the top sheet 3101a, and the back sheet.
  • An absorbent article main body 3101 including an absorbent body 3101c that absorbs and holds is provided.
  • back side (rear side) Ba and “abdominal side (front side) Fr” are determined.
  • the back side Ba is a side that comes to the back side of the wearer when the diaper 3100 is worn
  • the ventral side Fr is a side that comes to the side of the wearer when the diaper 3100 is worn.
  • the diaper 3100 is provided with a back side region S1, a crotch region S2, and a ventral region S3 in order along the longitudinal direction L from the back side Ba to the ventral side Fr.
  • the absorbent article main body 3101 is configured to cover the entire crotch portion of the wearer from the wearer's back to the abdomen.
  • the side flap part 3110 is provided in the both sides of the width direction W of the absorbent article main body 3101 by extending the top sheet 3101a and a back sheet.
  • Each side flap portion 3110 is provided with an elastic member 3111 in the stretched state in the longitudinal direction L of the absorbent article main body 3101.
  • a pair of waist flap portions 3120 are provided in the back region S1 of each side flap portion 3110.
  • Each waist flap part 3120 is an elongate strip
  • a locking portion 3130 is attached to the end of each waist flap portion 3120.
  • the diaper 3100 is worn around the waist of the wearer by locking the locking portion 3130 attached to the end of one waist flap portion 3120 to the other waist flap portion 3120.
  • the fastening part 3140 is attached to the ventral region S3 of the absorbent article main body 3101.
  • the absorbent article main body 3101 covers the inseam of the wearer by causing the waist flap 3120 in a state worn around the waist of the wearer to be fastened from the outside.
  • the pair of waist flap portions 3120 when worn, can be disposed in a direction inclined to the wearer's back side with respect to the wearer's waistline direction, and thus the fit to the body is high.
  • an object of the present invention is to provide an absorbent article that does not increase the amount of materials used, has a troublesome manufacturing process, and has high fit to the body.
  • the first feature of the present invention is that the dorsal side and the ventral side are determined, and the dorsal region, the crotch region, and the ventral region are provided in order along the longitudinal direction from the dorsal side to the ventral side.
  • Absorbent comprising a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber that is disposed between the top sheet and the back sheet and absorbs and holds liquid.
  • An absorbent article body a pair of side flap portions provided on the outer side in the width direction of the absorbent article body along the longitudinal direction on both sides in the width direction of the absorbent article body, and the back region
  • a pair of waist flap portions provided so as to protrude from the pair of side flap portions to the outside in the width direction of the absorbent article main body, and each of the pair of waist flap portions includes , Waist extension
  • Each of the waistline extending regions has a dimension extending in the width direction of the absorbent article body at the abdomen end, and the width of the absorbent article body at the back end.
  • each of the above-mentioned waistline extension field is formed so that it may reach the above-mentioned ventral edge in each of a pair of above-mentioned waist flap parts
  • each of the waistline stretching regions may be provided in a range not reaching the dorsal side edge of each of the pair of waist flap portions.
  • each of the waistline extending regions may be provided in a range reaching the dorsal side edge of each of the pair of waist flap portions.
  • each of the waistline stretching regions may be provided at a root position of each of the pair of waist flap portions.
  • the ventral side edge of each of the waistline stretching regions may be stretched in a range of 1.1 to 3.0 times.
  • FIG. 44 to 50 show a 4-1 embodiment of the present invention
  • FIG. 44 shows a plan view of the diaper in a developed state
  • FIG. 45 shows a cross-sectional view taken along line AA of FIG. 46 shows a cross-sectional view taken along the line BB of FIG. 44
  • FIG. 47 shows a cross-sectional view taken along the line CC of FIG. 44
  • FIG. 48 shows a cross-sectional view of the main part of the stretching apparatus
  • FIG. FIG. 50 is a plan view of a stretching device 3030 for processing, that is, a stretched state of the waistline stretching region
  • FIG. 50 is a side view of the diaper 1A in a worn state, that is, a diaper mounted state.
  • the diaper 3001A which is an absorbent article, includes an absorbent article body 3002, a pair of side flap portions 3010, a pair of back side waist flap portions (waist flap portions) 3020, and a pair.
  • the ventral side waist flap part 3021 is provided.
  • the back side Ba and the abdominal side Fr are determined, and the back side region S1, the crotch region S2, and the abdomen are sequentially arranged along the longitudinal direction L from the back side Ba to the abdominal side Fr.
  • a side region S3 is provided.
  • the pair of side flap portions 3010 are formed in the width direction W of the absorbent article main body 3002 along the longitudinal direction L of the absorbent article main body 3002 on both sides of the absorbent article main body 3002 in the width direction W. Is provided outside.
  • pair of back side waist flap portions 3020 are provided so as to protrude from the pair of side flap portions 3010 to the outside in the width direction W of the absorbent article main body 3002 in the back side region S1.
  • the pair of ventral side waist flap portions 3021 is provided so as to protrude from the pair of side flap portions 3010 to the outside in the width direction W of the absorbent article main body 3002 in the ventral side region S3.
  • the absorbent article main body 3002 is disposed between the liquid-permeable top sheet 3003, the liquid-impermeable back sheet 3004, and the top sheet 3003 and the back sheet 3004, and absorbs and holds the liquid 3005. And at least.
  • the top sheet 3003 is formed of a hydrophilic nonwoven fabric, a woven fabric, a hydrophobic nonwoven fabric having openings, or the like.
  • the back sheet 3004 is formed of a liquid impermeable nonwoven fabric, a liquid impermeable film, a hydrophilic nonwoven fabric and a sheet obtained by bonding a liquid impermeable film.
  • the back sheet 3004 is a laminate of a liquid impermeable film 3004a and a liquid impermeable nonwoven fabric 3004b.
  • the absorbent body 3005 a laminated body in which absorbent pulp and a super absorbent polymer are mixed is used.
  • the pair of side flap portions 3010 are formed by a top sheet 3003 and a back sheet 3004 extending from both sides of the absorbent article main body 3002 in the width direction W.
  • An elastic member 3012 is provided in an extended state along the longitudinal direction L in at least the crotch region S2 of the pair of side flap portions 3010.
  • the elastic member 3012 is made of four polyurethane elastic yarns 470 dtex that are elongated at a magnification of 2.2 times.
  • the pair of back waist flap portions 3020 and the pair of abdominal waist flap portions 3021 extend in a direction corresponding to the wearer's waistline direction (width direction W of the absorbent article main body 302).
  • the pair of back-side waist flap portions 3020 is provided so as to protrude from the back-side region S1 of the pair of side flap portions 3010 to the outside in the width direction W of the absorbent article main body 3002, and the pair of belly-side waists
  • the flap portion 3021 is provided so as to protrude from the ventral region S3 of the pair of side flap portions 3010 to the outside in the width direction W of the absorbent article main body 3002.
  • the back-side dorsal waist flap portion 3020 and the ventral-side waist flap portion 3021 are formed of a liquid-impermeable nonwoven fabric.
  • the pair of back side waist flap portions 3020 is formed of a liquid-impermeable and heat-extensible nonwoven fabric, and the pair of back side waist flap portions 3020 in the present embodiment includes an SMS 13 g / It is formed by bonding two sheet materials of m 2 (see FIG. 46).
  • a locking portion 3022 is provided on the distal end side of the pair of back side waist flap portions 3020.
  • the locking portion 3022 engages with the ventral waist flap portion 3021, and a hook-and-loop fastener that locks with a mechanical locking force or an adhesive tape that locks with an adhesive force can be used.
  • the material of the ventral side waist flap portion 3021 is a sheet material having at least the surface of the nonwoven fabric.
  • a waistline extending region 3023 is formed in each of the pair of back waist flap portions 3020.
  • Each of the waistline stretching regions 3023 is provided in the vicinity of the side flap portion 3010, that is, at the root position.
  • each of the waistline stretching regions 3023 is formed to extend along the longitudinal direction L of the absorbent article main body 3002 from the edge of the ventral side Fr.
  • the end of the back side Ba in the waistline extending region 3023 is up to the front of the edge of the backside Ba in each backside waist flap portion 3020, and the waistline extending region 3023 is the back side Ba in each backside waist flap portion 3020. Therefore, the non-stretched region F exists around the edge of the back side Ba in each back side waist flap portion 3020.
  • the length of the waistline stretching region 3023 is set to 100 mm, and the length of the non-stretching region F is set to 10 mm.
  • the waistline stretching region 3023 is a region weighed lower than other regions by stretching.
  • the waistline stretching region 3023 formed by the stretching process includes a dense portion (not labeled) having a small stretch amount along the width direction W of the side flap portion 3010 and a rough portion having a large stretch amount. (Without reference numerals) are alternately provided.
  • the dimension extending in the width direction W of the end portion of the belly side Fr in the waistline stretching region 3023b is larger than the dimension extending in the width direction W of the end portion of the back side Ba in the waistline stretching region 3023b.
  • diaper 1A can fit a wearer's crotch part.
  • X is a dimension in the width direction W of the waistline stretching region 3023 (that is, a stretching amount) before stretching
  • Y is a dimension in the width direction W of the waistline stretching region 3023 stretched by stretching (that is, stretching). Amount).
  • X ⁇ Y is set, but it is preferable to set the dimensional difference between Y and X to be 0.5 to 10 cm.
  • the dimensional difference is less than 0.5 cm, the difference in the distance before and after stretching is reduced for children with a circumference difference of 1 cm or more at the minimum between the waist and hip.
  • the circumferential length gap cannot be compensated by the extension distance of the waistline stretching region 23.
  • the stretching device 3030 has a pair of stretching blade rows 3031 that face each other and can be engaged with each other.
  • the blade depth is 2 mm
  • the pitch between the pair of blades is 1.25 mm
  • the number of blades is 17.
  • the pair of back-side waist flap portions 3020 is heated to a temperature near the softening point, and then inserted between the extending blade row portions 3031.
  • the set temperature of the extending blade row portion 3031 is set to 100 ° C. and subjected to drawing processing.
  • the material of the pair of back side waist flap portions 3020 approaches the softening point, so that it is easy to extend and material damage due to the stretching process can be reduced.
  • preliminary heating may be performed before the stretched blade row portion 3031.
  • a dense portion having a small stretch amount and a rough portion having a large stretch amount are alternately provided in the width direction W.
  • the diaper 3001A is put into a wearing state by locking the locking portions 3022 of the pair of back side waist flap portions 3020 to the surfaces of the pair of abdominal side waist flap portions 3021.
  • each side flap portion 3010 When the wearer wears the diaper 3001A, the outer periphery of each side flap portion 3010 is brought into close contact with the circumference of the wearer's legs due to the contraction of the elastic members 3012a to 3012d.
  • the non-stretched region F does not extend in the width direction W of the absorbent article main body 3101, but the waistline stretched region 3023 extends in the width direction W of the absorbent article main body 3101. As described above, a dimensional difference between X and Y occurs.
  • the edge of the abdominal side Fr in the waistline extending region 3023 of the pair of back waist flap portions 3020 can be sufficiently sized to wrap the hip portion and there is no risk of material damage.
  • the film is preferably stretched in the range of 0.1 to 3.0 times.
  • the waist size of the pair of back side waist flap portions 3021 may be small and the hip portion may not be sufficiently wrapped, and if the stretch amount exceeds 3.0 times, This is because damage due to stretching is so great that material damage such as tearing or perforation may occur.
  • the edge of the ventral side Fr in the waistline stretching region 3023 is stretched in a range of 1.2 to 2.0 times in consideration of fit to the hip portion and prevention of material damage.
  • each back side waist flap 3020 can be provided in the direction (width direction W of the absorbent article main body 2) corresponding to a wearer's waistline direction, it does not increase a use material and the manufacturing process is carried out. There is no trouble.
  • the waistline extending region 3023 extends and the whole does not extend in the pair of back side waist flap portions 3020, the waistline dimensions before wearing are maintained even when the diaper 3001A is worn, and the diaper 3001A is displaced. There is no.
  • non-stretch region F since there is a portion (non-stretch region F) other than the waistline stretch region 3023 in the longitudinal direction L of the pair of back side waist flap portions 3020, the strength of the pair of back side waist flap portions 3021 is reduced. Can be prevented as much as possible.
  • the waistline extending region 3023 is provided at the root position of the pair of back side waist flap portions 3020 (in the vicinity of the side flap portion 3010), the front ends in the width direction W of the pair of back side waist flap portions 3020 Since the amount of change with respect to the inclination at can be greatly increased, the desired amount of change can be obtained with the width of the waistline stretching region 3023 having a small width.
  • the angle formed by the imaginary line in the width direction W of the diaper 3001A, which is generated when the back-side waist flap portion 3020 is extended, is preferably 0 to 30 °.
  • the angle When the angle is less than 0 °, the distance around the waist becomes longer than the distance around the hip, so that fit cannot be obtained. When the angle exceeds 30 °, the direction around the waist This is not preferable because the tension of the back waist flap portion 3020 is difficult to be applied and the fit property is lowered.
  • a pair of back side waist flap part 3020 and a pair of abdominal side waist flap part 3021 comprised with a pair of side flap part 3010 and another member are comprised by the same member. May be. If comprised in this way, manufacture of diaper 3001A can be simplified.
  • FIG. 51 is a plan view of a diaper 3001B according to a 4-2 embodiment of the present invention.
  • FIG. 51 (a) shows a plan view of the diaper 3001B before wearing
  • FIG. 51 (b) shows a state after wearing.
  • the top view of diaper 3001B of is shown.
  • the waistline extending region 3023 is formed up to both edges in the longitudinal direction L of each back waist flap portion 3020 as compared to the 4-1 embodiment.
  • the waistline extending region 3023 is formed over the entire length of the pair of back waist flap portions 3020.
  • the waistline stretching region 3023 has the same width dimension that is stretched over the entire length of the back waist flap portion 3020, but the stretch amount per unit length is different.
  • the width dimension when the waistline extending region portion 3023 on the ventral side Fr is stretched (when worn) is larger than the waistline extending region portion 3023 on the back side Ba.
  • the width dimension of the waistline stretching region 3023 before wearing is the H dimension, but as shown in FIG. 51 (b), the waistline stretching region on the back side Ba after wearing.
  • the portion 3023 has an I dimension (H ⁇ I), and the waistline extending region portion 3023 on the abdomen Fr after wearing has a J dimension (H ⁇ J and I ⁇ J).
  • the stretching process in the manufacture of the diaper 3001B of the present embodiment is possible by changing the depth of the blade of the stretched blade row portion 3031 between the back side Ba and the ventral side Fr.
  • the waistline stretching region 3023 has the same stretching width in the longitudinal direction L, but the end of the waistline stretching region 3023 is constrained to a portion that is not the waistline stretching region 3023, so The stretching amount is small, and the stretching amount increases as the distance from the end increases.
  • (4-3 embodiment) 52 is a plan view of a diaper 3001C according to a fourth to third embodiment of the present invention.
  • FIG. 52 (a) shows a plan view of a diaper 3001B before wearing
  • FIG. 52 (b) shows a state after wearing. The top view of diaper 3001B of is shown.
  • the waistline extending region 3023 is formed over the entire length of the pair of back waist flap portions 3020, as in the 4-2 embodiment.
  • the waistline stretching region 3023 has a different width dimension that is stretched over the entire length of the pair of back side waist flap portions 3020, and the waistline stretching region portion 3023a on the abdominal side Fr has a large width dimension.
  • the width dimension of the waistline extending region 3023b in Ba is set small.
  • This provides a larger width dimension when the waistline extending region portion 3023a on the ventral side Fr is stretched (when worn) than the waistline extending region portion 3023b on the back side Ba.
  • the width dimension of the waistline stretching region 3023 before wearing is an H dimension
  • the waistline stretching region on the back side Ba after wearing is the width of the portion 3023b
  • the width of the waistline extending region 3023a on the abdomen Fr after wearing is the J dimension (H ⁇ J and I ⁇ J).
  • the amount of change with respect to the inclination at the tip in the width direction W of the pair of back-side waist flap portions 3020 can be greatly increased, the width dimension, the degree of stretching, etc. of the waistline stretching region 3023 can be made as small as possible. It can be a shift amount.
  • FIG. 53 is a plan view of a diaper 3001D according to Embodiment 4-4 of the present invention.
  • the diaper 3001D according to the fourth to fourth embodiments is a belt type so that the pair of back waist flap portions 3020 extends long in a direction (width direction W) perpendicular to the longitudinal direction L of the absorbent article main body 3002. Is provided.
  • the one back side waist flap part 3020 is provided with a locking part 3022.
  • the pair of abdominal side waist flap portions 3021 is also provided in the width direction W of the absorbent article main body 3002, and a locking portion 3024 is provided on the surface thereof, so that the diaper 3001D can be worn. .
  • the fit is improved by providing the waistline stretching region 3023 outside the side flap portions 3010.
  • the absorbent article according to the present invention is an absorbent article that can be fitted to the wearer, and can reduce the amount of materials used, facilitate processing during manufacturing, and the like. Useful in articles.
  • the absorbent article according to the present invention can prevent bleeding and leakage, and has good air permeability.
  • the absorbent article according to the present invention is to form a so-called pocket on the wearer's crotch side, and can reduce the amount of materials used, facilitate the processing during manufacture, and thus reduce the manufacturing cost. it can. For this reason, it is useful in absorbent articles such as diapers.
  • a pair of waist flap part can be extended in the direction (width direction W of an absorbent article main body) corresponding to a wearer's trunk periphery direction at the time of product manufacture.
  • a pair of waist flap portions can be arranged in a direction in which each waistline extending region is inclined toward the wearer's back side with respect to the wearer's waistline direction.

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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)
  • Orthopedics, Nursing, And Contraception (AREA)

Abstract

La présente invention concerne une couche (1A) comportant les éléments suivants : un corps principal absorbant (2) qui comprend au moins une feuille supérieure perméable au liquide (3) ; une feuille postérieure imperméable au liquide (4) ; et un corps absorbant (5) qui est disposé entre la feuille supérieure et la feuille postérieure dans le but d'absorber et de retenir du liquide. Ledit corps possède les éléments suivants : une région latérale postérieure (S1), une région d'entrejambe (S2) et une région latérale antérieure (S3) dans la direction longitudinale L qui court depuis le côté postérieur Ba jusqu'au côté antérieur Fr lorsque la couche est portée ; et une paire de parties de rabat latéral gauche et droit (10) qui sont prévues sur les deux côtés du corps principal absorbant (2) dans le sens de la largeur W, avec une région d'extension latérale antérieure (15) qui s'étend autour de la taille dans la région latérale antérieure (S3) de chaque partie de rabat latéral (10).
PCT/JP2009/052872 2008-02-19 2009-02-19 Article absorbant WO2009104673A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CA2715999A CA2715999A1 (fr) 2008-02-19 2009-02-19 Article absorbant
CN2009801057555A CN101945631A (zh) 2008-02-19 2009-02-19 吸收性物品
MX2010009134A MX2010009134A (es) 2008-02-19 2009-02-19 Articulo absorbente.
AU2009216183A AU2009216183A1 (en) 2008-02-19 2009-02-19 Absorbent article
MA33182A MA32198B1 (fr) 2008-02-19 2010-09-14 Article absorbant

Applications Claiming Priority (16)

Application Number Priority Date Filing Date Title
JP2008037916A JP5130075B2 (ja) 2008-02-19 2008-02-19 吸収性物品
JP2008-037919 2008-02-19
JP2008037919 2008-02-19
JP2008-037922 2008-02-19
JP2008-037921 2008-02-19
JP2008037922 2008-02-19
JP2008037921 2008-02-19
JP2008-037916 2008-02-19
JP2008093816A JP5379991B2 (ja) 2008-03-31 2008-03-31 吸収性物品
JP2008-093816 2008-03-31
JP2009026246A JP5566612B2 (ja) 2008-02-19 2009-02-06 吸収性物品
JP2009-026246 2009-02-06
JP2009-026255 2009-02-06
JP2009026255A JP5566613B2 (ja) 2008-02-19 2009-02-06 吸収性物品
JPPCT/JP2009/052646 2009-02-17
PCT/JP2009/052646 WO2009104581A1 (fr) 2008-02-19 2009-02-17 Article absorbant

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WO2009104673A1 true WO2009104673A1 (fr) 2009-08-27

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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Publication number Priority date Publication date Assignee Title
WO2019073636A1 (fr) * 2017-10-12 2019-04-18 ユニ・チャーム株式会社 Feuille étirable pour article absorbant et article absorbant l'utilisant
JP2019072865A (ja) * 2017-10-12 2019-05-16 ユニ・チャーム株式会社 吸収性物品用伸縮性シート及びそれを使用した吸収性物品
JP7025172B2 (ja) 2017-10-12 2022-02-24 ユニ・チャーム株式会社 吸収性物品用伸縮性シート及びそれを使用した吸収性物品
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