WO2019230317A1 - Couche jetable de type culotte - Google Patents

Couche jetable de type culotte Download PDF

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Publication number
WO2019230317A1
WO2019230317A1 PCT/JP2019/018531 JP2019018531W WO2019230317A1 WO 2019230317 A1 WO2019230317 A1 WO 2019230317A1 JP 2019018531 W JP2019018531 W JP 2019018531W WO 2019230317 A1 WO2019230317 A1 WO 2019230317A1
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WO
WIPO (PCT)
Prior art keywords
load
extension
pants
disposable diaper
type disposable
Prior art date
Application number
PCT/JP2019/018531
Other languages
English (en)
Japanese (ja)
Inventor
高橋　明男
章之 植田
Original Assignee
花王株式会社
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
Application filed by 花王株式会社 filed Critical 花王株式会社
Priority to RU2020141845A priority Critical patent/RU2762027C1/ru
Priority to CN201980032179.XA priority patent/CN112153954A/zh
Publication of WO2019230317A1 publication Critical patent/WO2019230317A1/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
    • 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
    • A61F13/496—Absorbent articles specially adapted to be worn around the waist, e.g. diapers in the form of pants or briefs
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/531—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having a homogeneous composition through the thickness of the pad
    • A61F13/532—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having a homogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad
    • 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
    • A61F13/551—Packaging before or after use

Definitions

  • the present invention relates to a pants-type disposable diaper provided with a disposal tape.
  • a diaper having a disposal tape that can maintain the disposable diaper in a rolled state is known.
  • a tape having an extendable portion has been proposed from the viewpoint of workability for rolling the diaper and maintaining the diaper in a rolled state.
  • the applicant of the present invention has previously proposed a fastening tape having an extendable portion that is continuously connected to the base (Patent Document 1).
  • Patent Document 2 discloses a pressure-sensitive adhesive tape having a predetermined tensile force when stretched 100% in the longitudinal direction and having a predetermined tensile force when stretched 100%, and shrinkage in the width direction when stretched 100% is 50% or less of the original tape width.
  • a disposable diaper with a disposal tape is described.
  • the said adhesive tape is comprised by bonding of 2 or more types of base materials which have different expansion-contraction performance.
  • JP-A-9-99010 Japanese Patent Laid-Open No. 11-276522
  • the present invention provides a pants-type disposable diaper having a waist opening and a pair of leg openings, and comprising a stomach side portion disposed on the wearer's stomach side and a back side portion disposed on the back side in a worn state. It is to provide.
  • a disposal tape is provided on the outer surface of the disposable diaper.
  • a fixing portion fixed to the outer surface of the disposable diaper, an extension portion, and a fastening portion are arranged in this order along the longitudinal direction of the disposal tape. It is in a tri-fold state that is stacked in order. In the three-folded state, the disposal tape is detachably joined between the fastening portion and the extension portion, and is also detachably joined between the extension portion and the fixing portion.
  • the extension portion has an extension start load of 6.5 N or less.
  • the waste tape has a width shrinkage rate of 25% or less when it is stretched 100% along the longitudinal direction.
  • FIG. 1 is a perspective view showing an embodiment of a pants-type disposable diaper of the present invention.
  • FIG. 2 is a developed plan view schematically showing the skin facing surface side in the developed and extended state of the pants-type disposable diaper shown in FIG. 1.
  • FIG. 3 is a perspective view showing a disposal form of the pants-type disposable diaper shown in FIG. 1.
  • FIG. 4 is a cross-sectional view showing the structure of a disposal tape provided in the pants-type disposable diaper shown in FIG.
  • FIG. 5 is a perspective view showing a state in which the disposal tape for the pants-type disposable diaper shown in FIG. 1 is extended.
  • FIG. 6A is a view showing the extending portion of the disposal tape shown in FIG. 4, and is a plan view showing a state before the extending portion is extended.
  • FIG.6 (b) is a top view which shows the state which extended
  • Patent Document 1 since the length increases due to the extension of the disposal tape, the diaper can be easily rounded and the diaper can be easily maintained in a rounded state. According to Patent Document 2, the stretching operation is easy at the time of use, and can be stretched to a sufficient length.
  • the width of the extendable portion may be greatly reduced as it extends.
  • the disposal tape is wound around a rolled diaper, it is difficult to fix the diaper firmly, and excessive pressure is applied to the wound part, and excreta absorbed by the diaper may leak out.
  • it is difficult to cause the width reduction due to the extension of the disposal tape it is difficult to sufficiently extend the disposal tape.
  • the present invention relates to a pants-type disposable diaper that can eliminate the disadvantages of the above-described conventional technology.
  • FIG. 1 shows an embodiment of a pants-type disposable diaper according to the present invention.
  • the pants-type disposable diaper 1 shown in the figure is a type of wearing article that is used by being worn on the lower abdomen of the wearer.
  • the diaper 1 is of a pants type having a waist opening 1W through which the wearer's torso is passed and a pair of leg openings 1L, 1L through which the wearer's lower limb is passed.
  • the diaper 1 includes an absorbent main body 4 having a top sheet, a back sheet, and an absorbent body 40, and an exterior body 5 disposed on the non-skin facing surface side of the absorbent main body 4.
  • the exterior body 5 forms the non-skin facing surface of the diaper 1, that is, the outer surface of the diaper 1.
  • the “skin-facing surface” is a surface of the diaper 1 that is an absorbent article or a constituent member thereof (for example, the surface sheet 2) that is directed toward the wearer's skin when worn, that is, relatively wearer's skin. It is the side close to the skin, and the “non-skin facing surface” is a surface of the diaper 1 or a component thereof directed to the side opposite to the skin side (clothing side) when worn, that is, relatively far from the wearer's skin. On the side. “At the time of wearing” means a state in which a normal proper wearing position, that is, a correct wearing position of the diaper 1 is maintained.
  • the diaper 1 includes an abdominal side A disposed on the wearer's abdomen in a worn state, a crotch C disposed on the crotch, and a back side B disposed on the back of the wearer.
  • both side edges along the longitudinal direction X of the exterior body 5 in each of the ventral side A and the back side B are joined to each other by a known joining means such as an adhesive, heat seal, ultrasonic seal or the like. Yes.
  • a known joining means such as an adhesive, heat seal, ultrasonic seal or the like.
  • FIG. 2 shows the diaper 1 in the expanded and extended state.
  • the “expanded and extended state” of the diaper 1 is defined as an expanded state separated from a state in which both side edges along the longitudinal direction X of the exterior body 5 of each of the abdominal part A and the back side part B are joined.
  • the diaper 1 is a state in which the elastic member of each part is extended to the design dimension (same as the dimension when the diaper 1 is flattened in a state where the influence of the elastic member is completely eliminated).
  • the diaper 1 has a longitudinal direction X corresponding to a direction extending from the abdominal side A to the back side B through the crotch C, and the diaper 1 in a state where the diaper 1 is spread in a plane as shown in FIG. A width direction Y perpendicular to the direction X is included.
  • the longitudinal direction X of the diaper 1 coincides with the longitudinal direction of the absorbent main body 4.
  • the diaper 1 is formed symmetrically with respect to a longitudinal center line CL that extends in the longitudinal direction X and bisects the diaper 1 in the width direction Y.
  • the absorbent main body 4 in the diaper 1 has a surface sheet 2 on the skin facing surface side and a back sheet (not shown) on the non-skin facing surface side, and has an absorbent body 40 between these both sheets.
  • the absorbent body 40 is located on the entire surface of the crotch part C, and at least one of the ventral part A and the back part B from the crotch part C along the longitudinal direction X. It extends to the part.
  • the absorbent body 40 includes a liquid-retaining absorbent core 41 and a core wrap sheet 42 that covers the absorbent core 41, but the absorbent body 40 does not include a core wrap sheet. It does not have to be.
  • the diaper 1 includes leak-proof cuffs 6 and 6 extending along the longitudinal direction X on both sides of the absorbent main body 4 along the longitudinal direction X.
  • the leak-proof cuffs 6 and 6 include a water-repellent cuff forming sheet 61 continuous over the entire length in the longitudinal direction X of the absorbent main body 4 and the longitudinal direction X on the inner side in the width direction Y of the cuff forming sheet 61. And one or a plurality of cuff elastic members 62 fixed in an expanded state.
  • the leak-proof cuffs 6 and 6 are fixed to the surface sheet via a cuff fixing portion (not shown) extending in the longitudinal direction X.
  • the leak-proof cuffs 6 and 6 stand on the skin facing surface side by having the cuff elastic member 62.
  • one or a plurality of elastic members 53, 54 extending along the width direction Y are in the vicinity of the waist opening 1 ⁇ / b> W or a part between the waist opening 1 ⁇ / b> W and the leg opening 1 ⁇ / b> L. It is arranged in the department.
  • the leg opening 1L is provided with an elastic member 52 along the opening 1L.
  • the elastic member 52 has a portion extending along the longitudinal direction X.
  • the materials used for the exterior member 5, the top sheet 2, the back sheet and the absorber 40 included in the absorbent main body 4, and the leakproof cuffs 6, 6 and the like have been used in the art.
  • the thing similar to a thing can be used without a restriction
  • a disposal tape 10 is provided on the back side B of the diaper 1.
  • the disposal tape 10 is used for maintaining the disposal form of the diaper 1.
  • the disposal tape 10 is located at a substantially central portion in the width direction Y in the back side portion B of the diaper 1.
  • the disposal tape 10 is provided so that the longitudinal direction thereof coincides with the longitudinal direction X of the diaper 1.
  • FIG. 3 shows a disposal form of the diaper 1 when it is discarded.
  • the diaper 1 is rolled up from the crotch part C toward the waist opening 1W so that the abdomen A is inward in the diaper 1 shown in FIG. make.
  • the disposal tape 10 provided on the back side B is exposed outside the rolled-up diaper 1.
  • the disposal tape 10 is stretched in the longitudinal direction of the tape 10, and then wound around the outer periphery of the diaper 1 that has been disposed in a disposal form, thereby maintaining the diaper 1 in the disposal form.
  • FIG. 4 shows a cross-sectional structure of the disposal tape 10 in a tri-fold state.
  • the disposal tape 10 is mainly composed of three parts. Specifically, the disposal tape 10 includes a fixing part 12, an extension part 15, and a fastening part 18. These three parts are arranged in this order along the longitudinal direction X1 of the disposal tape 10.
  • the disposal tape 10 has a longitudinal direction X1 and a width direction Y1 orthogonal to the longitudinal direction X1.
  • the three portions of the fixing portion 12, the extending portion 15, and the fastening portion 18 are in a three-fold state where they are stacked in this order. No other member is interposed between the fixed portion 12 and the extending portion 15, and both are connected directly. Similarly, no other member is interposed between the extending portion 15 and the fastening portion 18, and both are directly connected.
  • the fixing part 12 in the disposal tape 10 has a fixing part sheet piece 13.
  • fixed part has the 1st surface 13a and the 2nd surface 13b.
  • the fixing portion sheet piece 13 has a first surface 13a facing the extending portion 15 and a second surface 13b of the diaper 1 except for a folded portion 13 'described later. Opposite the outer surface.
  • the fixing part 12 has a fixing part adhesive part 14.
  • the fixing portion adhesive portion 14 is provided on the second surface 13 b of the fixing portion sheet piece 13.
  • the fixing part 12 is fixed to the outer surface of the back side part B in the diaper 1 by a fixing part adhesive part 14.
  • the disposal tape 10 is detachably fixed to the outer surface of the back side portion B of the diaper 1 through the fixing portion adhesive portion 14.
  • a known method for fixing the disposal tape 10 to the outer surface of the diaper a known method such as an adhesive such as a hot-melt adhesive or a fusion can be used.
  • the extending portion 15 of the disposal tape 10 is a portion that easily expands with a relatively weak tensile force when a tensile force is applied to the disposal tape 10 and increases the length of the disposal tape 10.
  • the extending portion 15 has an extending portion sheet piece 16.
  • the extension portion sheet piece 16 may have the same length as the fixing portion sheet piece 13 described above, or may have a different length. Further, the extension portion sheet piece 16 may have the same width as the fixing portion sheet piece 13 or may have a different width.
  • the extending portion sheet piece 16 has a first surface 16a and a second surface 16b.
  • the extension portion sheet piece 16 has a first surface 16a facing the fastening portion 18 and a second surface 16b fixed portion, except for a folded portion 16 'described later. 12 is opposed.
  • the extending portion 15 has an extending portion adhesive portion 17.
  • the extension portion adhesive portion 17 is provided on the second surface 16 b of the extension portion sheet piece 16.
  • the extension part adhesive part 17 joins the extension part 15 and the fixing part 12 in the three-folded state of the disposal tape 10 so as to be peelable. Therefore, it is preferable that the adhesive part 17 for extended parts is comprised from the low-adhesive adhesive.
  • the fixing portion sheet piece 13 in the fixing portion 12 described above has a folded portion 13 ′ in which one end of the disposal tape 10 in the longitudinal direction X ⁇ b> 1 is folded back toward the extending portion 15.
  • the folded portion 13 ′ is joined to one end of the extension portion sheet piece 16 in the extension portion 15 on the second surface 16 b side.
  • extension part 15 are connected directly.
  • a known method such as an adhesive such as a hot-melt adhesive or a fusion can be used.
  • the fastening portion 18 of the disposal tape 10 can be secured at an arbitrary position on the outer surface of the diaper 1.
  • the fastening portion 18 stops on the outer surface of the diaper 1. It is the part to be worn.
  • the fastening part 18 forms a tip region of the disposal tape 10 and has a fastening part sheet piece 19.
  • the fastening portion sheet piece 19 may have the same length as the fixing portion sheet piece 13 or the extension portion sheet piece 16 or may have a different length. Further, the fastening portion sheet piece 19 may have the same width as the fixing portion sheet piece 13 or the extension portion sheet piece 16 or may have a different width.
  • the sheet piece 19 for fastening part has the 1st surface 19a and the 2nd surface 19b.
  • the fastening portion 18 has a fastening portion adhesive portion 20.
  • the adhesion part 20 for fastening parts is provided on the second surface 19 b of the sheet piece 19 for fastening parts.
  • the adhesive part 20 for the fastening part is detachably joined between the fastening part 18 and the extension part 15 in the disposal tape 10 in a tri-fold state, and the fastening part 18 is attached to the outer surface of the diaper 1. It is surely fixed at an arbitrary position. From this viewpoint, it is preferable that the degree of adhesiveness of the adhesive portion 20 for the fastening portion is determined.
  • the extension portion sheet piece 16 in the extension portion 15 described above is folded at one end in the longitudinal direction X1 toward the fastening portion 18 to form a folded portion 16 '.
  • the folded portion 16 ′ is joined to one end of the fastening portion sheet piece 19 in the fastening portion 18 on the second surface 19 b side.
  • the extending portion 15 and the fastening portion 18 are directly connected to each other.
  • a known method such as an adhesive such as a hot melt adhesive or a fusion can be used.
  • a knob piece 21 is joined to the second surface 19 b side.
  • the knob piece 21 is a separate sheet piece from the fastening part sheet piece 19.
  • the disposal tape 10 composed of three parts is folded in three in a Z-shape. Then, the disposal tape 10 is disposed so that the free end of the disposal tape 10 in a tri-fold state, that is, the attachment portion of the knob piece 21 in the fastening portion 18 faces the waist opening 1W side in the diaper 1. It is attached to the back side B of the diaper 1.
  • the extension part 15 can be extended in the longitudinal direction X1 of the disposal tape 10 in the unfolded state where the three-fold state of the disposal tape 10 is released.
  • the unfolded state in which the tri-fold state is released means that the stretched portion 15 and the fixing portion 12 of the disposal tape 10 are separated from each other and the stretched portion 15 and the fastening portion 18 are separated from each other. This means that the waste tape 10 is unfolded linearly.
  • the disposal tape 10 can be stretched by human force, and at that time, the elongated portion 15 is mainly elongated. For example, as shown in FIG.
  • the disposal tape 10 changes from the tri-fold state to the unfolded state.
  • the extension part 15 can be extended in the longitudinal direction X1.
  • the fastening portion 18 and the fixing portion 12 do not exhibit extensibility in the longitudinal direction X1 or have extremely low extensibility as compared with the extension portion 15. That is, the sheet piece 19 that constitutes the fastening portion 18 and the sheet piece 13 that constitutes the fixing portion 12 do not exhibit extensibility, or have a very low extensibility compared to the extension portion sheet piece 16.
  • the extension portion 15 has an extension start load Pb for starting the extension set to 6.5 N or less.
  • the disposal tape 10 can be easily extended
  • the extension start load Pb of the extension part is preferably 6N or less.
  • the lower limit value of the extension start load Pb is preferably 2N, more preferably 3N.
  • the elongation start load Pb is preferably 2N or more and 6.5N or less, more preferably 3N or more and 6N or less. In order to achieve such an extension start load, for example, a constituent material of the extension 15 may be appropriately selected.
  • the extension start load Pb of the extension part 15 is measured by the following method.
  • the extension start load (N) at which the extension part starts to extend is the load at the first maximum point in the measured tensile load-elongation relationship.
  • the first maximum point is the maximum point that appears first in the measured tensile load (N) -elongation curve.
  • the maximum load at elongation between 30% and 70% elongation is regarded as the tensile load at the first maximum point.
  • the maximum value of the tensile load which changes with a tensile distance be a fracture strength.
  • the extension part 15 has a width reduction ratio of 25% or less when it is extended 100% along the longitudinal direction X1.
  • the width shrinkage ratio is an index representing the degree of width shrinkage of the disposal tape that occurs with the extension of the disposal tape.
  • the extending portion 15 is a portion that can be easily extended, and usually the width of the extending portion 15 is reduced along with the extension. “Elongate 100% along the longitudinal direction X1” means that the extending portion 15 of the disposal tape 10 is extended until it becomes twice the length before extension.
  • the width shrinkage rate (%) is measured by the method described later.
  • the width shrinkage rate (%) of the extending portion 15 is the above-described value, the elongation starting load Pb of the extending portion 15 is coupled with the above-described value, and the disposal tape 10 can be easily extended. Since the local binding force resulting from the disposal tape 10 is less likely to be applied to the disposable diaper 1, the excrement held by the diaper 1 is not intended to leak out. From this viewpoint, the width shrinkage ratio (%) of the elongated portion 15 is preferably 25% or less, more preferably 20% or less. The width shrinkage rate (%) is preferably as small as possible. Specifically, the lower limit of the width shrinkage rate (%) is preferably 10%, more preferably 5%.
  • the width shrinkage ratio is measured by the following method.
  • Measurement method of width shrinkage ratio The disposal tape is separated from the outer surface of the diaper, and the disposal tape is put into a developed state.
  • tensile tester for example, model “AUTOGRAPH AG-X” manufactured by Shimadzu Corporation
  • the stretched portion is stretched 100% along the longitudinal direction X1 at a speed of 300 mm / min from a straight stretched state so that the stretched portion does not stretch (the distance between chucks at this time is La). That is, the extension portion is extended until it becomes twice the distance La between chucks before extension.
  • the width W1 at the smallest width portion, which is the narrowest portion of the stretched portion, is measured.
  • Width shrinkage rate (%) [(W0 ⁇ W1) / W0] ⁇ 100 (1)
  • the width shrinkage ratio of the extending part 15 is achieved by, for example, appropriately selecting the constituent material of each part such as the extending part 15. Or as shown to Fig.6 (a), by extending
  • the extending portion 15 has a plurality of high load extending portions 33, and a portion other than the high load extending portion 33 is a low load extending portion 31.
  • the high-load extension portion 33 is disposed apart along the longitudinal direction X1 of the disposal tape 10 via the low-load extension portion 31.
  • the high-load extension portion 33 is disposed so as to be separated along the width direction Y1 of the disposal tape 10 via the low-load extension portion 31.
  • the high-load extending portions 33 have the same shape and the same size, and are arranged at intervals along the longitudinal direction X1. Further, the high load extension portions 33 are arranged at intervals along the width direction Y1 to form a high load extension portion row 33R. Each high load extension part 33 in the high load extension part row
  • the plurality of high load extending portions 33 are arranged along the width direction Y1 in a state where the plurality of high load extending portions 33 overlap with the longitudinal direction X1 on the assumption that the plurality of high load extending portions 33 are separated from each other in the longitudinal direction X1. .
  • the positions in the longitudinal direction X1 of the plurality of high load extending portions 33 arranged along the width direction Y1 are the same.
  • the extending portion 15 having the above configuration When the extending portion 15 having the above configuration is extended in the longitudinal direction X1, as shown in FIG. 6B, the extending portion 15 greatly extends in the longitudinal direction X1 in the low load extending portion 31. On the other hand, since the high load extension portion 33 is less likely to extend than the low load extension portion 31, this causes the low load extension portion 31 located between the high load extension portions 33 in the longitudinal direction X1.
  • the width shrinkage is regulated. As a result, it is possible to reduce the width shrinkage ratio of the extending portion 15 while increasing the expandability of the extending portion 15.
  • the minimum width portion at the time of 100% elongation measured when calculating the width shrinkage ratio is a portion where the high load extension portion 33 is arranged in the longitudinal direction X1.
  • the length L3 of the high load extension part 33 in the longitudinal direction X1 is the length between the high load extension parts 33 in the longitudinal direction X1.
  • it is 20% or more with respect to L1 [refer Fig.6 (a)], More preferably, it is 50% or more, Preferably it is 200% or less, More preferably, it is 150% or less, Moreover, preferably it is 20% or more and 200 % Or less, more preferably 50% or more and 150% or less.
  • the total length L3 of the plurality of high-load extension parts 33 in the longitudinal direction X1 is the extension in the longitudinal direction X1. It is preferably 15% or more, more preferably 20% or more, and preferably 75% or less, more preferably 60% or less, with respect to the length L of the portion 15 [see FIG. 6 (a)]. Is from 15% to 75%, more preferably from 20% to 60%.
  • the length L [see FIG. 6A] of the extending portion 15 in the longitudinal direction X1 is the length of the portion that can be extended in the extending portion 15, and the joint portion and the fixing portion with the fastening portion 18 in the extending portion 15. 12 is a length excluding the joint portion with 12.
  • the length L of the extending portion 15 in the longitudinal direction X1 is the length before expansion.
  • the length L1 between the high load extension portions 33 in the longitudinal direction X1 is preferably 1 mm or more, more preferably 2 mm or more.
  • the thickness is preferably 10 mm or less, more preferably 8 mm or less, and preferably 1 mm or more and 10 mm or less, more preferably 2 mm or more and 8 mm or less.
  • the length W4 of the high-load extension portion 33 in the width direction Y1 is the length W3 between the high-load extension portions 33 in the width direction Y1 [see FIG. 6 (a)] is preferably 100% or more, more preferably 150% or more, preferably 400% or less, more preferably 300% or less, and preferably 100% or more and 400% or less. More preferably, it is 150% or more and 300% or less.
  • the total length W4 of the high load extension portion 33 in the width direction Y1 is preferably 40% or more with respect to the width W0 of the extension portion 15 before extension (see FIG. 6A). More preferably, it is 50% or more, preferably 100% or less, more preferably 90% or less, and preferably 40% or more and 100% or less, more preferably 50% or more and 90% or less.
  • the sum of the length W4 of the high load extension part 33 in the width direction Y1 is different along the longitudinal direction, it is set as the sum of the length W4 of the high load extension part 33 in the part corresponding to the minimum width part.
  • the width of the high load extension portion that is, the length in the width direction Y1 is the length of the high load extension portion 33 in the width direction Y1.
  • the length W3 between the portions 33 is preferably more than 0 mm, more preferably 1 mm or more, and preferably 5 mm or less, more preferably 4 mm or less, and preferably more than 0 mm and 5 mm.
  • it is more preferably 1 mm or more and 4 mm or less.
  • the high-load extension portion 33 and the low-load extension portion 31 can be made to have different extensibility by appropriately selecting, for example, constituent materials having different extension start loads.
  • constituent materials of the high load extension portion 33 and the low load extension portion 31 are the same, their extensibility can be made different by making their basis weights different from each other.
  • the high load extension portion 33 has a relatively higher basis weight than the low load extension portion 31.
  • the basis weight of the high load extension portion 33 and the low load extension portion 31 is constituted by a laminate of a plurality of sheets, and the laminate What is necessary is just to differ the number of sheets which comprise.
  • the basis weight of the high load extension part 33 is preferably 1 with respect to the basis weight of the low load extension part 31. 0.5 times or more, more preferably 2.0 times or more, preferably 10 times or less, more preferably 7.5 times or less, and preferably 1.5 times or more and 10 times or less, more preferably 2 times. It is 0.0 times or more and 7.5 times or less.
  • the value of the basis weight itself of the high load extension portion 33 is preferably 75 g / m 2 or more, more preferably 150 g / m 2 or more, and preferably 300 g / m 2 or less, more preferably 250 g / m 2 or less. Yes, preferably 75 g / m 2 or more and 300 g / m 2 or less, more preferably 150 g / m 2 or more and 250 g / m 2 or less.
  • the basis weight of the low load extension portion 31 is lower than the basis weight of the high load extension portion 33, it is preferably 50 g / m 2 or more, more preferably 75 g / m 2 or more, and preferably It is 150 g / m 2 or less, more preferably 125 g / m 2 or less, preferably 50 g / m 2 or more and 150 g / m 2 or less, more preferably 75 g / m 2 or more and 125 g / m 2 or less.
  • the high load extending portion 33 is preferably made of the same material as the fastening portion 18.
  • the high load extension portion 33 is preferably made of the same material as the fixing portion 12.
  • the other sheet material is made of the same material as either the fastening portion 18 or the fixing portion 12. It is preferable to be configured.
  • the extension start load of the high load extension portion 33 is preferably at least twice, more preferably at least three times the extension start load of the low load extension portion 31. Yes, preferably 6 times or less, more preferably 5 times or less, and preferably 2 times or more and 6 times or less, more preferably 3 times or more and 5 times or less.
  • the extension start load of the low load extension portion 31 is preferably 6.5 N or less, more preferably 6 N or less.
  • the extension start load of the low load extension portion 31 is preferably 2N or more, more preferably 3N or more. It is. Therefore, the extension start load of the low load extension portion 31 is preferably 2N or more and 6.5N or less, more preferably 3N or more and 6N or less.
  • the extension start load of the high load extension part 33 is higher than the extension start load of the low load extension part 31, it is preferably 10N or more, more preferably 15N or more, and preferably 40N or less. More preferably, it is 35N or less, preferably 10N or more and 40N or less, more preferably 15N or more and 35N or less.
  • the extension start load of the low load extension part 31 and the high load extension part 33 is measured as follows. [Measurement method of elongation start load of low load extension and high load extension]
  • the extension part is pulled using a tensile tester in the same manner as described above [Method for measuring extension start load of extension part], and the tensile load that changes with the tensile distance is measured.
  • the tensile load (N) -elongation curve the load at which the low load extension starts to expand is shown as the first maximum point. That is, the load at the first maximum point is the extension start load of the low load extension portion.
  • the extension start load of the extension part and the extension start load of the low load extension part are synonymous.
  • the load at which the high load extension portion starts to extend is indicated as the second maximum point. That is, the load at the second maximum point is the extension start load of the high load extension portion.
  • the second maximum point is the maximum point that appears second in the measured tensile load (N) -elongation curve.
  • N measured tensile load
  • the absorptive core 41 has the low basic weight part 45 extended in the longitudinal direction X of the diaper 1 in a wearer's skin opposing surface, as shown in FIG.
  • the low basis weight part 45 is located at least in the center part in the width direction Y of the diaper 1. Since the disposal tape 10 described above is also disposed in the center of the diaper 1 in the width direction Y, the low basis weight portion 45 is located on a virtual extension line in the longitudinal direction X1 of the disposal tape 10.
  • the low basic weight part 45 may be a part where, for example, the material constituting the absorbent core 41 is missing and the part is a space or a recess.
  • Such a part has a basis weight of zero or a low basis weight as compared to the periphery of the part.
  • a groove along the low basis weight portion 45 is formed on the outer surface of the diaper 1.
  • the disposal tape 10 is wound along the groove, the disposal form is stably maintained.
  • the width W1 (see FIG. 6B) at the minimum width portion of the disposal tape at 100% elongation is equal to or less than the width W2 (see FIG. 2) of the low basis weight portion 45, the disposal tape 10
  • the width W1 see FIG. 6B
  • the disposable diaper 1 is disposed at the time of 100% extension from the width W2 of the low basis weight portion 45.
  • the width W1 at the minimum width portion of the tape is preferably larger.
  • the width W1 at the minimum width portion of the disposal tape at 100% elongation is preferably 110% or more with respect to the width W2 of the low basis weight portion 45, more preferably. Is 120% or more, preferably 300% or less, more preferably 250% or less, and preferably 110% or more and 300% or less, more preferably 120% or more and 250% or less. Further, from the viewpoint of easily forming a groove along the low basis weight portion on the outer surface of the diaper 1 that has been wound up and disposed of, the low tsubo in the longitudinal direction X of the diaper 1 in the expanded and elongated diaper 1
  • the length L8 (see FIG. 2) of the amount portion 45 is preferably 20% or more and 70% or less, more preferably 30% or more and 50%, relative to the length L9 (see FIG. 2) of the diaper 1 in the longitudinal direction X. It is as follows.
  • an appropriate material may be selected as the sheet piece 16 constituting the extension part 15.
  • an extensible film can be used as a constituent material of the sheet piece 16 constituting the extending portion 15.
  • Such films include, for example, single layer films and multilayer films such as coextruded films.
  • polyolefin such as linear low density polyethylene is preferable.
  • the same material as that of the above-described sheet piece may be used, and any material that cannot be stretched, that is, cannot be plastically deformed. It may be used.
  • conventionally known materials such as resinous sheets (plastic sheets, films, etc.), non-woven fabrics and woven fabrics can be used without particular limitation.
  • fixed part is extendable, in the part currently fixed to the outer surface of the diaper 1, the extensibility is a state which does not express.
  • a rubber-based adhesive portion 17 for joining the extending portion 15 and the fixing portion 12 so as to be peeled or an adhesive portion 20 for fastening portion joining the fastening portion 18 and the extending portion 15 so as to be peelable can be used.
  • a pressure-sensitive adhesive and an acrylic pressure-sensitive adhesive are generally used, and a rubber-based pressure-sensitive adhesive is preferably used.
  • the rubber-based pressure-sensitive adhesive include synthetic rubbers such as styrene-butadiene block copolymers and hydrogenated styrene-butadiene block copolymers, or blends of these synthetic rubbers and resins.
  • Each of the extension portion adhesive portion 17 and the fastening portion adhesive portion 20 may be formed on the entire second surface 16b of the extension portion sheet piece 16. Moreover, these adhesion parts 17 and 20 may each be formed intermittently. In this case, these adhesive parts 17 and 20 can be formed intermittently by applying the above-mentioned adhesive intermittently.
  • the disposal tape 10 provided on the outer surface of the diaper 1 has a fixing portion sheet piece 13 at one end of the extension portion sheet piece 16 and a fastening portion sheet at the other end portion of the extension portion sheet piece 16. It can be manufactured by partially laminating the pieces 19 and joining and integrating the laminated portions using a known method such as an adhesive. In the laminated portion, a folded portion obtained by folding a part of the sheet piece may be formed as in the above embodiment.
  • the disposal tape 10 was provided in the back side part B of the diaper 1, the site
  • the disposal tape 10 was provided so that the longitudinal direction X1 might correspond to the longitudinal direction X of the diaper 1, the direction of the disposal tape 10 is not restricted to this, For example, it is a disposal tape You may provide the tape 10 so that the longitudinal direction X1 may correspond with the width direction Y of the diaper 1.
  • the knob piece 21 was joined to the other end of the sheet
  • the extension portion 15 has the high load extension portion 33 and the low load extension portion 31 having different extension start loads. However, the extension portion 15 has a lower extension start load than the high load extension portion 33. And you may have the intermediate
  • FIG. In this case, the tensile strength measured in the above-mentioned [Method for measuring the elongation starting load of the low load extension portion and the high load extension portion] indicates the first, second and third maximum points, and the second maximum point is The third maximum point becomes the extension start load of the high load extension part in the extension start load of the medium load extension part.
  • the third maximum point is the maximum point that appears third in the measured tensile load (N) -elongation curve. If none of the first to third maximum points is clearly understood or observed, the maximum load during elongation between 30% and 70% elongation is the tensile load at the first maximum point, elongation 130 The maximum load at the time of elongation between% and 170% is regarded as the tensile load at the second maximum point, and the maximum load at the time of elongation between 230% and 270% is regarded as the tensile load at the third maximum point.
  • the pants-type wearing article of the present invention may be a pants-type sanitary napkin or the like in addition to a pants-type disposable diaper for infants or adults.
  • a pants-type disposable diaper having a waist opening and a pair of leg openings, and having an abdominal side disposed on the abdomen side of the wearer and a dorsal side disposed on the back side in a wearing state
  • a disposal tape is provided on the outer surface of the disposable diaper, In the disposal tape, a fixing portion fixed to the outer surface of the disposable diaper, an extension portion, and a fastening portion are arranged in this order along the longitudinal direction of the disposal tape.
  • the disposal tape is detachably joined between the fastening portion and the extension portion, and is also detachably joined between the extension portion and the fixing portion.
  • the extension portion has an extension start load of 6.5 N or less,
  • stretching part is a pants type disposable diaper whose width shrinkage
  • the width shrinkage ratio of the disposal tape is preferably 25% or less, more preferably 20% or less, preferably 10% or more, more preferably 5% or more, according to ⁇ 1> or ⁇ 2>. Pants-type disposable diapers.
  • the extension part has a low load extension part and a high load extension part having a relatively higher extension start load than the low load extension part,
  • the length of the high load extension part in the longitudinal direction of the disposal tape is 20% or more, preferably 50% or more, and 200% or less with respect to the length between the high load extension parts in the longitudinal direction.
  • the pants-type disposable diaper according to ⁇ 4> or ⁇ 5> preferably 150% or less.
  • the total length of the plurality of high-load extension portions in the longitudinal direction of the disposal tape is 15% or more, preferably 20% or more, and 75% with respect to the length of the extension portions in the longitudinal direction.
  • the length between the high-load extension portions in the longitudinal direction of the disposal tape is 1 mm or more, more preferably 2 mm or more, and 10 mm or less, preferably 8 mm or less.
  • the length of the high load extension portion in the width direction of the disposal tape is 100% or more, preferably 150% or more, and 400% or less with respect to the length between the high load extension portions in the width direction.
  • the pants-type disposable diaper according to ⁇ 9> which is preferably 300% or less, and 100% or more and 400% or less, preferably 150% or more and 300% or less.
  • the total length of the high-load extension part in the width direction is 40% or more, preferably 50% or more, and 100% or less, preferably 90% or less with respect to the width W0 of the extension part before extension.
  • the length between the high-load extension portions in the width direction of the disposal tape is more than 0 mm, preferably more than 1 mm, more than 5 mm, preferably less than 4 mm, more than 0 mm and less than 5 mm, preferably more than 1 mm.
  • the pants-type disposable diaper according to any one of ⁇ 9> to ⁇ 11>, which is 4 mm or less.
  • the plurality of high-load extension portions are arranged at intervals along the width direction of the disposal tape to form a high-load extension portion row, ⁇ 9> thru
  • the pants-type disposable diaper according to any one of the above.
  • Pants-type disposable diaper ⁇ 15> The pants type disposable diaper according to any one of ⁇ 4> to ⁇ 14>, wherein the high load extension portion has a relatively higher basis weight than the low load extension portion.
  • the basis weight of the high load extension portion is 1.5 times or more, preferably 2.0 times or more, and 10 times or less, preferably 7.5 times or less with respect to the basis weight of the low load extension portion.
  • the value of the basis weight itself of the high load extension portion is 75 g / m 2 or more, preferably 150 g / m 2 or more, and 300 g / m 2 or less, preferably 250 g / m 2 or less ⁇ 4> to The pants-type disposable diaper according to any one of the above ⁇ 16>.
  • the basis weight of the low load extension portion is 50 g / m 2 or more, preferably 75 g / m 2 or more, and preferably 150 g / m 2 or less, provided that the basis weight of the high load extension portion is lower.
  • the elongation starting load of the high load extending portion is 2 times or more, preferably 3 times or more, and 6 times or less, preferably 5 times or less of the elongation starting load of the low load extending portion.
  • the extension start load of the high load extension part is higher than the extension start load of the low load extension part, it is 10N or more, preferably 15N or more, and 40N or less, preferably 35N or less.
  • the pants-type disposable diaper according to any one of ⁇ 4> to ⁇ 23>.
  • the absorbent core has a low basis weight portion extending in the longitudinal direction of the diaper at the position of the center portion in the width direction of the diaper on the skin facing surface of the wearer, Any one of ⁇ 1> to ⁇ 24> above, wherein the width at the minimum width portion when the elongated portion is elongated 100% along the longitudinal direction is larger than the width of the low basis weight portion.
  • Pants-type disposable diapers as described. ⁇ 26>
  • the width of the minimum width portion when the elongated portion is elongated 100% along the longitudinal direction is 110% or more, preferably 120% or more, and 300% with respect to the width of the low basis weight portion.
  • the pants-type disposable diaper according to ⁇ 25> which is preferably 250% or less.
  • the length of the low basis weight portion in the longitudinal direction of the disposable diaper is 20% or more and 70% or less, preferably 30% or more and 50% or less with respect to the length of the disposable diaper in the longitudinal direction ⁇ 25 > Or the pants-type disposable diaper according to ⁇ 26>.
  • Example 1 The fixing part and the fastening part were made of a polypropylene / polyethylene mixture, and the elongated part was made of low-density polyethylene as a forming material to produce a disposal tape. For the disposal tape, each forming material was melted to form a film.
  • As an extension part what has a low load extension part and a high load extension part was produced. Specifically, another film made of the same forming material as that of the film was laminated on the film forming the low load extension portion to form the high load extension portion.
  • the extension portion has a plurality of high load extension portions spaced apart in the longitudinal direction and width direction of 4 mm square, and four high load extension portion rows in which the three high load extension portions are arranged in the width direction.
  • Table 1 shows the specifications of the elongated portion.
  • the extension start load of the low load extension portion that is, the extension start load of the extension portion was 5.8N.
  • the width shrinkage ratio of the elongated portion was 7%. Both ends of such an extended part were joined to a fixing part and a fastening part, and this was used as a disposal tape.
  • the length L of the elongated portion in the longitudinal direction that is, the length of the stretchable portion in the elongated portion was 43 mm
  • the width W0 of the elongated portion before stretching was 16 mm.
  • Example 2 As shown in Table 1 below, in the extension part of Example 2, the length between the high-load extension parts in the longitudinal direction is made longer than the extension part of Example 1, and the load is higher than that of the extension part of Example 1. Reduced the number of parts. Specifically, the extension part had four rows of high load extension parts in which three high load extension parts of 3 mm square were arranged in the width direction. Otherwise, a pants-type disposable diaper was obtained in the same manner as in Example 1. The width shrinkage rate was 20%.
  • Example 1 A pants-type disposable diaper was obtained in the same manner as in Example 1 except that high-density polyethylene was used as a forming material for the portion corresponding to the elongated portion, and the basis weight was uniform throughout the elongated portion.
  • the basis weight was 100 g / m 2 .
  • the extension start load of the extension part in the disposal tape was 18N. Further, the width shrinkage ratio of the elongated portion was 15%.
  • Comparative Example 2 A pants-type disposable diaper was obtained in the same manner as in Comparative Example 1 except that the basis weight was 50 g / m 2 .
  • the extension start load of the extension part in the disposal tape was 3N. Further, the width shrinkage ratio of the elongated portion was 40%.
  • the diaper of each example shows that the disposal tape can be easily stretched and the local binding force of the disposal tape wound around the diaper is difficult to be applied.
  • the diaper of Comparative Example 1 has a low evaluation of ease of extending the disposal tape.
  • the diaper of the comparative example 2 became a thing with low evaluation of the difficulty of adding the local binding force of the disposal tape.
  • the present invention it is easy to extend the disposal tape, and the local binding force resulting from the disposal tape is less likely to be applied to the disposable diaper. Therefore, the excrement held in the diaper is unintentionally leaked. It becomes difficult to put out.

Landscapes

  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Absorbent Articles And Supports Therefor (AREA)

Abstract

Une bande jetable (10) est disposée sur la surface externe d'une couche (1). La bande jetable (10) comprend une section fixe (12), une section extensible (15), et une section de fixation (18), agencées dans cet ordre dans la direction longitudinale (X1) de la bande jetable (10), et est pliée en trois de sorte que ces sections sont empilées dans cet ordre. La section de fixation (18) et la section extensible (15) sont reliées l'une à l'autre de manière séparable, et la section extensible (15) et la section fixe (12) sont également reliées l'une à l'autre de manière séparable. La charge de début d'extension de la section extensible (15) est inférieure ou égale à 6,5 N. Le taux de réduction de largeur de la bande jetable (10), lorsqu'elle est étirée de 100 % dans la direction longitudinale, est inférieur ou égal à 25 %.
PCT/JP2019/018531 2018-05-28 2019-05-09 Couche jetable de type culotte WO2019230317A1 (fr)

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RU2020141845A RU2762027C1 (ru) 2018-05-28 2019-05-09 Одноразовый подгузник типа трусов
CN201980032179.XA CN112153954A (zh) 2018-05-28 2019-05-09 短裤型一次性尿布

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JP2018-101660 2018-05-28
JP2018101660A JP7007989B2 (ja) 2018-05-28 2018-05-28 パンツ型使い捨ておむつ

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US11957557B2 (en) 2018-04-24 2024-04-16 Kao Corporation Pants-type disposable diaper

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WO2022030432A1 (fr) * 2020-08-06 2022-02-10 花王株式会社 Couche jetable de type culotte
JP7064035B2 (ja) * 2020-08-06 2022-05-09 花王株式会社 パンツ型使い捨ておむつ
JP2022057123A (ja) * 2020-09-30 2022-04-11 花王株式会社 パンツ型吸収性物品

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JPH11276522A (ja) * 1998-01-29 1999-10-12 Oji Paper Co Ltd 使い捨ておむつ廃棄用テープ
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CN112153954A (zh) 2020-12-29
RU2762027C1 (ru) 2021-12-14
JP2019205540A (ja) 2019-12-05
JP7007989B2 (ja) 2022-01-25

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