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 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 specially adapted to be worn around the waist, e.g. diapers, nappies
  • A61F13/494—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 specially adapted to be worn around the waist, e.g. diapers, nappies characterised by edge leakage prevention means
  • A61F13/49406—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 specially adapted to be worn around the waist, e.g. diapers, nappies characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region
  • A61F13/49413—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 specially adapted to be worn around the waist, e.g. diapers, nappies 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 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 specially adapted to be worn around the waist, e.g. diapers, nappies
  • A61F13/494—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 specially adapted to be worn around the waist, e.g. diapers, nappies characterised by edge leakage prevention means
  • A61F13/49466—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 specially adapted to be worn around the waist, e.g. diapers, nappies characterised by edge leakage prevention means the edge leakage prevention means being at the waist region

Definitions

• the present invention relates to a disposable diaper, and more particularly, to the diaper having a barrier capable of preventing a body fluid from flowing forward and backward on a body fluid absorbing portion.
• a crotch covering area Conventionally, a crotch covering area, a front waist covering area connected to a front part of the crotch covering area, and a rear waist covering area connected to a rear part of the crotch covering area, A disposable diaper in which a body fluid absorbing portion extending toward the covering area around the front and rear torso is formed is well known. Also, a disposable diaper provided with a barrier capable of stopping the flow of bodily fluid in the front-rear direction over the bodily fluid absorbing portion in the crotch region is known.
• a diaper disclosed in Japanese Patent Application Laid-Open No. H8-322878 includes a pair of leak-proof cuffs formed on both sides of the diaper so as to be elastically extendable in the front-rear direction. And a flap extending in the width direction of the diaper and formed between the pair of leak-proof cuffs in the crotch region.
• the flap is formed by bending a nonwoven or plastic film into a Z-shape or inverted Z-shape. The bottom of the Z-shaped flap is joined to the top sheet of the diaper, and the top of the flap is the width of the diaper.
• An elastic member extending in the direction is attached in an extended state.
• the top of the diaper is also joined at both ends in the width direction to the inner surface of the leak-proof hood.
• the leak-preventing cuff sexually contracts in the front-rear direction of the diaper and stands up on the topsheet, and at the same time, the both ends are closed.
• the flaps that are joined to the upper part also stand up above the topsheet. Strong flaps act as a barrier to prevent loose stool from flowing into the surrounding area in the previous month and also prevent urine from flowing toward the back waist area.
• the top to which the elastic member is attached in an extended state can elastically adhere to the skin of the diaper wearer.
• a barrier means is provided on at least the skin contacting surface of the back waist region of the front / rear waist region and extends in the direction of the circumference of the back waist region to prevent excretion from flowing out.
• the barrier means protrudes at a height of at least 2 mm from the surface of the topsheet of the wearing article and extends in a direction around the back hip region, and is higher than the compression elastic recovery rate of the topsheet and the absorbent core. It is composed of a pad member having a compression elastic recovery rate.
• this flap has a problem in that it is difficult to adhere equally to the raised and depressed portions of the skin.
• the barrier means described in Patent Document 2 is also made of an elastic pad member extending in the lumbar rotation direction, this member can easily adhere to the raised skin.
• an object of the present invention is a disposable diaper having a front-rear direction and a width direction orthogonal to the front-rear direction.
• this diaper at least a part of the surface of a block made of a body fluid-absorbing material is covered with a liquid-permeable sheet, and The bodily fluid absorbing portion extending toward the front waist circumference covered area and the rear waist circumference covered area, the crotch covered area, and the front waist area A barrier extending in the width direction at a distance between the covering area and the rear waistline covering area to prevent the body fluid from flowing in the front-rear direction on the liquid-permeable sheet; .
• the barrier is a cluster-like aggregate of a plurality of nonwoven fabric strips having a width and a length extending perpendicular to each other, and the plurality of the strips are arranged side by side with the width in the width direction.
• one end in the longitudinal direction is fixed to the liquid-permeable sheet, and the other end opposite to the one end is free to deform.
• the barrier formed so as to cross the body fluid absorbing portion is an aggregate of strips made of nonwoven fabric, and when the diaper is worn, the strips which are adjacent to each other are arranged side by side. Since they do not restrain each other's deformation, they adhere well to both raised and depressed parts of the skin, and do not create a large gap between the skin and the barrier. Diapers with a strong barrier can reliably stop loose stool and urine from flowing back and forth.
• the present invention has the following preferred embodiments.
• the strip is fixed to the liquid-permeable sheet at a position closer to the front waistline covered area than a centerline extending in the width direction by dividing the size of the diaper in the front-rear direction at one end. Have been.
• the barrier in the crotch coverage area is formed near the front waist area, the space from the anus to the barrier of the diaper wearer is large, so that many loose stools can be accommodated in the space. it can.
• the length direction from the one end of the strip toward the opposite end substantially coincides with the direction in which the crotch portion covering area force is directed to the rear waistline covering area.
• a first barrier wherein the length direction, which is forward of the first barrier and extends from the one end to the opposite end, is substantially in a direction in which the crotch portion covering area force is directed toward the crotch covering area; At least one of the matching second barriers.
• the diaper of this aspect if it has the first barrier, soft stool can be accommodated between the strip and the liquid-permeable sheet to prevent the soft stool from touching the skin. If the diaper has a second barrier, cover the topsheet wet with urine with the second barrier. Thus, the wet surface does not give the diaper wearer a feeling of wetness.
• the nonwoven fabric contains crimped fibers.
• the nonwoven fabric used for the strip contains crimped fibers, the strip can be easily deformed naturally.
• the strip has a fold formed with repetitions of undulations in its length direction.
• the strip piece has the folds, so that it becomes easy to deform sexually.
• FIG. 1 is a partially broken plan view of a diaper.
• FIG. 2 is a partially enlarged view of FIG.
• FIG. 3 is a view showing a cross section taken along line III-III of FIG. 1.
• FIG. 4 is a view showing a section taken along line IV—IV in FIG. 1.
• FIG. 5 is a view similar to FIG. 1 showing an example of the embodiment.
• FIG. 6 is a view showing a section taken along line VI—VI of FIG. 5.
• FIG. 7 is a view similar to FIG. 5, illustrating an example of the embodiment.
• FIG. 8 shows an example of a strip.
• the disposable diaper 1 shown in a partially broken plan view in Fig. 1 is composed of a liquid-permeable top sheet 2, a liquid-impermeable back sheet 3, and a bodily fluid absorbent core interposed between these two sheets 2 and 3. And a double-headed arrow X and Y whose width direction and front-rear direction are orthogonal to each other.
• the diaper 1 also has a crotch covering area 6 in the front-rear direction Y and a force connected to a front part of the crotch covering area 6 3 ⁇ 4 a front waist covering area 7 and a rear waist connecting to a rear part of the crotch covering area 7.
• the core 4 extends from the crotch covering area 6 toward the front waistline covering area 7 and the rear waistline covering area 8, and covers the core 4 so as to sandwich it.
• the backsheet 2 and the backsheet 3 extend from the periphery of the core material 4 and overlap, and the overlapping portions are joined to each other by bonding or welding.
• a plurality of waist elastic members 13 extending in the width direction X along the edge 11 are located between the top sheet 2 and the back sheet 3, and these sheets 2, 3 Are joined in an extended state.
• a plurality of leg elastic members 14 extending in the front-rear direction Y along the curved side edge 12 It is located between the back sheet 3 and at least one of the sheets 2 and 3 in an extended state.
• a fastening tape 17 coated with an adhesive 16 extends to the side.
• the topsheet 2 forms a diaper inner surface 18 facing the diaper wearer's skin
• the backsheet 3 forms a diaper outer surface 19 facing the diaper wearer's clothes.
• a pair of leak-proof cuffs 21 extending in the front-rear direction Y and a barrier 22 extending in the width direction X are formed.
• the portion where the surface sheet 2, the core material 4, and the back sheet 3 overlap is the body fluid absorbing part 40.
• the leak-proof cuff 21 is formed of a nonwoven fabric, more preferably a liquid-impervious nonwoven fabric, and has a front edge 26 and a rear edge 27 extending in the width direction X, and an inner edge extending in the front-rear direction Y. 28 and an outer edge 29.
• the front edge 26, the rear edge 27, and the outer edge 29 are bonded to the topsheet 2 by bonding or welding, but the inner edge 28 is not bonded to the topsheet 2 and is nonwoven.
• the elastic member 31 extended in the front-rear direction Y inside the sleeve 32 formed by folding back, it can be extended and contracted in the front-rear direction Y, and cooperates with the topsheet 2 for the center.
• a pocket 30 opens toward the line C—C (see FIG. 3).
• the barrier 22 is located between the pair of leak-proof cuffs 21 and 21, has a front barrier 22a and a rear barrier 22b, and is formed by a plurality of nonwoven strips 41 and 42. ing.
• Each of the strip pieces 41, 42 has fixed ends 41a, 42a and free ends 41b, 42b, and the fixed ends 41a, 42a are directly connected to the topsheet 2 at welding lines 43 extending in the width direction X. Alternatively, they are indirectly welded and fixed, and the free ends 41b and 42b are free to deform.
• the fixed ends 41a and 42a are intermittently fixed to the topsheet 2 means that the fixed ends 41a and 42a overlapping each other or the fixed ends 41a and 42a of the mating part where the fixed ends 41a and 42a overlap each other. It means that it is fixed to the topsheet 2.
• FIG. 2 is a partially enlarged view of the barrier 22.
• Each of the strips 41, 42 of the front barrier 22a and the rear barrier 22b has a width A, a extending in the width direction X and a length B, b extending in the front-rear direction Y.
• the strips 42 are also arranged side by side, and are joined to the topsheet 2 at welding lines 43 having a dimension D in the front-back direction Y.
• Preferred strips 41, 42 have widths A, a in the range of 3 to 15 mm and lengths B, b in the range of 5 to 70 mm
• the dimension D of the welding wire 43 is in the range of l to 5 mm.
• the width A of the strip 41 of the front barrier 22a is the same as the width a of the strip 42 of the rear barrier 22b, and the length B of the strip 41 is shorter than the length b of the strip 42.
• the welding line 43 is located closer to the front waist region 8 than the center line M—M that bisects the dimension of the diaper 1 in the front-rear direction Y in the crotch region 6 (see FIG. 1).
• FIG. 3 is a view showing a cross section taken along line III-III of FIG.
• the fixed end portion 29 of the leak prevention cuff 21 is joined to the portion where the surface sheet 2 extends outward from the side edge 61a of the core member 4 by welding or bonding.
• the free end 28 extends from the fixed end 29 beyond the side edge 6 la of the core 4 to above the bodily fluid absorbing portion 40, and when the diaper 1 is curved in the front-rear direction Y, the elastic member 31 It contracts and rises upward as shown by the imaginary line, facing upwards of the topsheet 2, and the pocket 30 formed in cooperation with the topsheet 2 is formed along the center line C--C (see FIG. 1). ).
• FIG. 4 is a view showing a cross section taken along the line IV-IV in FIG. 1, and the line IV-IV coincides with the center line CC.
• Each of the front barrier 22a and the rear barrier 22b is an aggregate of the strips 41 and 42, respectively, and the strips 41 overlap each other in the thickness direction of the strips.
• the fixed ends 41a and the fixed ends 42a of the overlapping strips are welded to each other, and the fixed end 41a and the solid end 42a may overlap and be welded.
• the strip pieces 41 and the strip pieces 42 gradually separate from each other as they move from the fixed ends 41a and 42a toward the free ends 41b and 42b, so that the front barrier 22a and the rear barrier 22b are separated from each other.
• the front barrier 22a formed as described above forms a flow P of excrement such as urine when the excrement flows on the topsheet 2 from the front waistline covering area 7 to the crotch covering area 6. Can be stopped. Further, the excrement enters the space between the plurality of strips 41 or is absorbed by the core material 4 located below the strip 41 in FIG. However, it is possible to prevent the diaper wearer from directly contacting the skin of the diaper and soiling the skin or giving the skin a wet feeling.
• the rear barrier 22b can stop the flow Q of the excrement such as loose stool when the excrement flows on the topsheet 2 from the rear waistline covering area 8 to the crotch covering area 6 toward the crotch covering area 6.
• the excreta enters between the plurality of strips 42, thereby causing It is possible to prevent the diaper wearer's skin from being stained. Therefore, in the diaper 1 having the barrier 22, the excrement such as urine having the flow P and the excrement such as soft stool having the flow Q are mixed in the crotch area 6 to protect the skin of the diaper wearer. There is no significant contamination.
• the barrier 22 having a strong action effect has a tuft-like front barrier 22a and a rear barrier 22a.
• the barriers 22b are deformed, preferably elastically deformed, so that their heights H, h are reduced.
• the front barrier 22a and the rear barrier 22b are sexually deformed, the heights H and h are almost restored to their original values when the pressure of the barriers 22a and 22b is released. Also becomes possible.
• the crotch covering area 6 of the diaper 1 becomes When the crotch force is also separated, the free ends 41b, 42b of the strips 41, 42 of each barrier 22a, 22b can be restored to the state before compression and continue to contact the crotch, and No gaps between skin. Therefore, the excrement on the inner surface 18 of the diaper 1 flows substantially across the front barrier 22a and the rear barrier 22b by passing through the gap between the strips 41, 42 and the skin. There is no such thing.
• the strips 41 and 42 can be individually deformed, and the force of the strips 41 arranged side by side is such that the strips 42 restrain each other's deformation.
• the barriers 22a, 22b made of these strips 41, 42 adhere well to the raised and recessed portions of the diaper wearer's crotch.
• the strips 41, 42 forming the elastically deformable front barrier 22a and rear barrier 22b are made of thermoplastic synthetic fibers, have a basis weight of 10 to 100 gZm 2, and have a basis weight of 0.05 to 0. It is preferably made of a bulky nonwoven having a density of lgZcm 3 .
• the density of the nonwoven fabric is a value obtained based on the thickness when a load of 3 g Zcm 2 is cut and the weight per 1 cm 2 . It is preferable to use crimped fibers, such as crimped conjugate fibers, as the thermoplastic synthetic fibers for making the nonwoven fabric, and to make the strips 41 and 42 easily elastically deformable.
• the front barrier 22a and the rear barrier 22b are not elastic. Strange It becomes easy to shape.
• the strips 41 and 42 can be made of a hydrophilic non-woven fabric or a hydrophobic non-woven fabric. When the strips 41 and 42 rub the skin, the excrement is transferred to the strips 41 and 42 so that the excretions are forcibly removed by the strips 41 and 42. .
• the barrier 22 where the welding line 43 is formed closer to the coverage area 7 around the same month as the center line M-M than the center line M-M is located at the rear of the center line M-M. It is also possible to change the surrounding coverage area closer to 8.
• the diaper 1 in which the position of the welding line 43 coincides with the center line M-M is folded along the center line M-M when it is packed, and is stretched in the front-rear direction Y when worn.
• a front barrier 22a and a rear barrier 22b having high heights H and h at which the strips 41 and 42 can easily rise high above the surface sheet 2 can be obtained.
• the barrier 22 illustrated in Figs. 1 to 4 also has a front barrier 22a and a rear barrier 22b, which also has a force.
• the present invention has a barrier 22 that has only one of these two barriers 22a, 22b.
• Diaper 1 can also be used.
• the present invention can be implemented with a diaper that does not have the leak-proof cuff 21.
• a nonwoven fabric, a thermoplastic synthetic resin film having liquid-permeable openings, or the like can be used for the topsheet 2.
• a thermoplastic synthetic resin film, a laminate sheet of a thermoplastic synthetic resin film and a nonwoven fabric, or the like can be used as the back sheet 3.
• the core 4 is made of a block made of a bodily fluid absorbent material such as ground pulp or a mixture of ground pulp and superabsorbent polymer particles, or this block is excellent in liquid diffusibility and liquid permeability such as tissue paper. Can be used.
• FIGS. 5 and 6 are views similar to FIG. 1 showing an example of the embodiment of the present invention, and a view showing a cross section taken along line VI-VI of FIG.
• the barrier 22 is formed in the rear waistline covering area 8, and the welding line 43 is formed between the edge 11 of the rear waistline area 8 and the edge 61b of the core material 4. And extends in the lateral direction X.
• a strip 41 extends from the welding line 43 beyond the edge 6 lb of the core 4 toward the center line M-M.
• the strip 42 extends from the welding line 43 toward the edge 11 of the rear waist region 8.
• a recess 62 for a toilet reservoir exhibiting a substantially inverted triangle is formed over the crotch portion covering region 6 and the rear waistline covering region 7.
• the core 4 is made thinner than the core 4 located outside the recess 62 so that the inner surface 18 of the diaper 1 is depressed.
• the strip 41 of the front barrier 22a forms a pocket 63 that opens to face the center line M-M in cooperation with the recess 62 by covering a part of the recess 62.
• the rear barrier 22b can be omitted to carry out the present invention.
• the concave portion 62 is not indispensable in the diaper 1, the present invention can be implemented by replacing the diaper 1 shown in the figure with one having no concave portion 62.
• the present invention can be implemented by providing the barrier 22 shown in the illustrated example in the front waistline covering area 7.
• FIG. 7 is a view similar to FIG. 5, showing an example of the embodiment of the present invention.
• the barrier 22 in the diaper 1 does not have a rear barrier 22b extending forward from the welding line 43 toward the front of the diaper 1 and having a front barrier 22a extending rearward from the diaper 1.
• the welding wire 43 is formed on the top sheet 2 located immediately above the core material 4.
• the strip 41 is formed in substantially the same shape as the strip 41 of the front barrier 22a in FIG. 5, and covers a part of the recess 62.
• FIG. 8 shows an example of a side surface shape of the strip 41 used in FIG. 7 by a sectional view taken along line VIII-VIII in FIG.
• Each of the strip pieces 41 has a large number of folds 66 that repeat undulations in the force length direction, which is also the strength of the nonwoven fabric. Even if the nonwoven fabric forming the strong strips 41 is non-conductive, the strips 41 become elastically deformable due to the presence of the folds 66. Form barrier 22 It is easy.
• the strip 41 having a strong fold 66 can also be used in the diaper of FIG.
• the present invention can be implemented with a diaper having a barrier 22 in the crotch region 6, the front waistline covered region 7, and the rear waistline covered region 8.
• the present invention it is possible to stop the flow of bodily fluids in the front-rear direction, and to produce a diaper having a barrier that tightly adheres to the skin.

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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)

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Publications (1)

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Family Applications (1)

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Cited By (2)

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Citations (5)

Family Cites Families (58)

• 2004
  • 2004-06-03 JP JP2004165371A patent/JP4511250B2/ja not_active Expired - Fee Related
• 2005
  • 2005-05-31 TW TW094117910A patent/TWI278306B/zh not_active IP Right Cessation
  • 2005-06-01 MY MYPI20052511A patent/MY139824A/en unknown
  • 2005-06-02 US US11/142,384 patent/US8231592B2/en not_active Expired - Fee Related
  • 2005-06-03 WO PCT/JP2005/010263 patent/WO2005117784A1/ja not_active Ceased
  • 2005-06-03 EP EP05751450.7A patent/EP1757256B1/en not_active Expired - Lifetime
  • 2005-06-03 CN CN2005800179824A patent/CN1960693B/zh not_active Expired - Fee Related
  • 2005-06-03 KR KR1020067024589A patent/KR100812495B1/ko not_active Expired - Fee Related

Patent Citations (5)

Non-Patent Citations (1)

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