WO2016104722A1 - Couche jetable - Google Patents

Couche jetable Download PDF

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Publication number
WO2016104722A1
WO2016104722A1 PCT/JP2015/086267 JP2015086267W WO2016104722A1 WO 2016104722 A1 WO2016104722 A1 WO 2016104722A1 JP 2015086267 W JP2015086267 W JP 2015086267W WO 2016104722 A1 WO2016104722 A1 WO 2016104722A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer sheet
adhesive
disposable diaper
sheet
edge
Prior art date
Application number
PCT/JP2015/086267
Other languages
English (en)
Japanese (ja)
Inventor
紀子 長▲瀬▼
吉岡　稔泰
潤 深澤
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 JP2014262708A external-priority patent/JP6364346B2/ja
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 BR112017013353-9A priority Critical patent/BR112017013353B1/pt
Priority to CN201580070877.0A priority patent/CN107106351A/zh
Priority to KR1020177019485A priority patent/KR102483846B1/ko
Priority claimed from JP2015252865A external-priority patent/JP6427482B2/ja
Publication of WO2016104722A1 publication Critical patent/WO2016104722A1/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
    • A61F13/496—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
    • 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
    • A61F13/49007—Form-fitting, self-adjusting disposable diapers
    • A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
    • A61F13/49011—Form-fitting, self-adjusting disposable diapers with elastic means the elastic means is located at the waist region
    • 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
    • A61F2013/49098—Other Details not otherwise provided of the absorbent articles specially adapted to be worn around the waist

Definitions

  • the present invention relates to a disposable diaper.
  • Such a disposable diaper is composed of an absorbent main body having an absorbent body that absorbs excrement, a back waistline portion located on one end side of the absorbent main body, and a ventral waistline located on the other end side of the absorbent main body. And a section.
  • a part of the upper end edge of the ventral waist part (front body) is cut so as to be convex downward, so that the ventral waist part is worn by a newborn's umbilical cord or the like when worn. Diapers that are difficult to hit are disclosed.
  • the ventral waist part (front body) of a disposable diaper is generally configured by joining a plurality of non-woven fabrics or the like in the thickness direction.
  • a print sheet designed with a character or the like, a sheet member for reinforcing the ventral waist part, or the like may be joined to the ventral waist part.
  • an adhesive such as a hot melt adhesive is used, but in a portion where the adhesive is applied, a sheet member such as a nonwoven fabric becomes harder than a portion where the adhesive is not applied, There is a risk that the touch may deteriorate.
  • the present invention has been made in view of the problems as described above, and the object thereof is to have a cut at the upper end of the abdominal waistline portion, and to stimulate the wearer's skin when worn. It is in providing difficult disposable diapers.
  • a main invention for achieving the above object is a disposable diaper having a longitudinal direction, a lateral direction, and a thickness direction intersecting each other, and comprising a waistline portion arranged around a wearer's waistline, wherein the waistline portion Has an inner layer sheet and an outer layer sheet that are overlapped and joined in the thickness direction, and a notch is provided in the central portion in the lateral direction on the ventral side of the waistline portion, and in the upper end portion in the longitudinal direction.
  • an adhesive for joining the inner layer sheet and the outer layer sheet to at least a part of the edge portion along the outer edge of the cut on the ventral side of the waistline portion, and the inner layer sheet or It is a disposable diaper characterized in that at least one of the adhesives for joining the outer layer sheet and another member is not provided.
  • a disposable diaper that has a cut at the upper end of the ventral waist part and is less likely to irritate the wearer's skin when worn.
  • FIG. 3 is a schematic cross-sectional view illustrating a YY cross section of FIG. 2. It is a figure explaining the cut 45.
  • FIG. 5A and 5B are diagrams for describing a modification of the shape of the cut 45.
  • FIG. 6A to 6C are a schematic plan view for explaining a region where an adhesive is provided in the ventral waist part 40 of the diaper 1 and a partial cross-sectional view thereof. It is a figure explaining the area
  • FIG. 10A and 10B are diagrams illustrating the arrangement of the adhesive that joins the folded sheet 42f when the folded sheet 42f is provided. It is a figure explaining arrangement
  • FIG. 10A and 10B are diagrams illustrating the arrangement of the adhesive that joins the folded sheet 42f when the folded sheet 42f is provided. It is a figure explaining arrangement
  • a disposable diaper having a waist portion that is arranged around a wearer's waist, and has a longitudinal direction, a lateral direction, and a thickness direction that intersect with each other, and the waist portion is overlapped and joined in the thickness direction
  • the inner layer sheet and the outer layer sheet, the laterally central portion of the waist portion of the waistline portion, and the upper end portion of the longitudinal direction is provided with a cut, on the belly side of the waistline portion, Bonding the inner layer sheet and the outer layer sheet, and the inner layer sheet or the outer layer sheet and another member to at least a part of the edge along the outer edge of the cut
  • a disposable diaper characterized in that at least one of the adhesives is not provided.
  • the rigidity of the portion is increased. Can be suppressed. Thereby, it can be made hard to give irritation to a wearer's umbilicus at the time of diaper wear.
  • the entire region of the cut edge has high rigidity. Can be suppressed. Thereby, when a diaper is worn, the wearer's feel around the umbilicus can be improved.
  • one or more sheet members different from the inner layer sheet and the outer layer sheet are joined to the inner layer sheet or the outer layer sheet, and the edge portion, from the lower end of the cut It is desirable that an area having a predetermined width below the vertical direction is not provided with all the adhesive that joins the inner layer sheet or the outer layer sheet and the sheet member.
  • a part of the part is not provided in the region below the cut edge so that any adhesive for joining each sheet member (for example, a printed sheet) is not provided.
  • the rigidity of the cutting edge can be kept low. Thereby, the irritation
  • the inner layer sheet is folded at the lower end in the vertical direction at the upper end portion in the vertical direction of the outer layer sheet and protrudes upward from the upper end portion in the vertical direction of the inner layer sheet. And the position of the lower end in the longitudinal direction of the folded sheet is lower than the position of the lower end of the cut, and the edge of the edge extends from the lower end of the cut. It is preferable that an adhesive for joining the folded sheet and the inner layer sheet is not provided in an area having a predetermined width below.
  • the folded lower end portion of the folded sheet is rolled up or detached. It is suppressed that it gets in the way. In that case, it can suppress that the rigidity of the said part becomes high by not providing an adhesive agent in the area
  • the inner layer sheet has a predetermined width below the longitudinal direction from the lower end of the cut, and the entire region in the lateral direction on the belly side of the waistline portion, It is desirable that at least one of an adhesive that joins the outer layer sheet and an adhesive that joins the inner layer sheet or the outer layer sheet and another member is not provided.
  • Such a disposable diaper can suppress an increase in rigidity in the region below the cut edge, which is the region most likely to contact the wearer's navel. Moreover, since the adhesive is not provided over the entire lateral direction of the lower region of the cut edge, it is possible to suppress the rigidity of the entire lateral direction to be low, and the touch when wearing the diaper is improved.
  • the adhesive is provided in a region outside the lateral portion of the edge portion where the adhesive is not provided. Is desirable.
  • the entire ventral waist part (diaper 1) can be formed more securely.
  • an elastic member that can be expanded and contracted in the lateral direction is provided in a state of being expanded in the lateral direction.
  • the inner layer sheet and the outer layer sheet are joined to each other via an adhesive provided on at least a part of the surface of the elastic member, and the vertical direction from the lower end of the notch among the edges. It is desirable that the elastic member is not arranged in a region having a predetermined width below the elastic member.
  • the adhesive applied to the elastic member for example, rubber thread
  • the bonding region can be freely formed by the arrangement of the rubber thread, the degree of freedom in designing with respect to the elastic force and the bonding strength acting on the abdominal waistline portion is increased.
  • the usage-amount of an adhesive agent can be decreased as a whole, and it can suppress that the rigidity of a ventral side waist part becomes high.
  • the elastic member is not arranged in a region having a predetermined width on the outer side in the lateral direction from both lateral ends of the cut.
  • the rigidity of the entire area of the cut edge is increased. It is suppressed. Thereby, when a diaper is worn, the wearer's feel around the umbilicus can be improved.
  • FIG. 1 is a schematic perspective view of a pants-type disposable diaper 1 (hereinafter simply referred to as diaper 1) according to the first embodiment.
  • FIG. 2 is a plan view showing a developed state of the diaper 1.
  • FIG. 3 is a schematic cross-sectional view showing the YY cross section of FIG. In FIG. 3, in order to explain the cross-sectional structure of the diaper 1, the actual structure is simplified and displayed. For example, the size of each member such as the ventral waist part 40 and the number of the abdominal thread rubber 43 may differ from the actual diaper 1.
  • the diaper 1 is a pants-type diaper mainly for newborns, and has a vertical direction and a horizontal direction perpendicular to each other in the pant-type state of FIG.
  • the lateral direction in the unfolded state is synonymous with the lateral direction in the pant-type state in FIG.
  • the vertical direction of the unfolded state is a direction along the vertical direction of the pants-type state, but both have slightly different meanings. Therefore, in the following description, the vertical direction in FIG.
  • the side which contacts a wear subject regarding a thickness direction is called "skin side”
  • the other side is called "non-skin side.”
  • the diaper 1 according to the present embodiment is a so-called three-piece type and has three parts. That is, this diaper 1 has an absorbent main body 10 that is applied to the crotch part of the wearer and absorbs excrement such as urine as the first part, and the back side part of the wearer as the second part. It has the back side waistline part 30 to cover, and has the abdominal side waistline part 40 which covers the wearer's abdomen side part as 3rd components.
  • the back waistline portion 30 and the ventral waistline portion 40 are arranged in parallel in the longitudinal direction (vertical direction in the deployed state) with a gap therebetween, and the absorbent main body 10 is interposed therebetween. Is over. And the back side waistline part 30 is being fixed to the one end part 10a of the absorptive main body 10, and the abdominal side waistline part 40 is being fixed to the other end part 10b, and the external appearance shape has comprised the planar view substantially H shape. In other words, the back waistline portion 30 is located on one end side of the absorbent main body 10, and the ventral waistline portion 40 is located on the other end side of the absorbent main body 10. 2 shows the shape of the diaper 1 when it is flatly extended when contraction force by various elastic members described later is not exerted on each member such as the back waistline portion 30 and the like. .
  • the absorbent main body 10 has two folding positions at the center of the diaper 1 in the longitudinal direction (that is, the longitudinal direction) (the middle of one end and the other end in the longitudinal direction of the unfolded diaper 1). Folded.
  • the waistline portions are formed in an annular shape. That is, the diaper 1 is formed by connecting (joining) the dorsal side edges 30a in the lateral direction of the dorsal waist part 30 and the ventral side edges 40a in the lateral direction of the abdominal waist part 40.
  • the dorsal side edges 30a are aligned with the position of the upper end 40b of the ventral waist part 40 in the vertical direction and the position of the upper end 30b of the back waist part 30 in the vertical direction.
  • the ventral side edges 40a are connected.
  • the upper ends of the dorsal side edges 30a are connected to each other so that the upper ends of the ventral side edges 40a are aligned.
  • the three parts will be described in the order of the absorbent main body 10, the ventral waist part 40, and the back waist part 30.
  • the absorbent main body 10 corresponds to the wearer's crotch (inseam) and is intended to absorb excrement such as urine.
  • the absorbent main body 10 has a rectangular shape in plan view, and is provided such that the longitudinal direction (long side direction) is along the longitudinal direction in the unfolded state.
  • the absorptive main body 10 is the absorber 11, the top sheet
  • a back sheet member 15 forming an exterior.
  • the absorber 11 is a member (absorbent core) formed by laminating liquid absorbent materials and can absorb excrement such as urine.
  • the absorber 11 has a pulp (pulp fiber) and an absorbent polymer (SAP).
  • SAP absorbent polymer
  • the absorber 11 which concerns on this Embodiment has planar view substantially hourglass shape.
  • the absorbent body 11 in the deployed state includes a recessed portion 12 that is recessed inward in the lateral direction at the central portion in the longitudinal direction of the absorbent body 11, and the width of the absorbent body 11 is the narrowest in the recessed portion 12. ing.
  • the vertical direction position of the hollow part 12 is the abdominal side waistline part 40 side rather than the center in FIG.
  • the hollow part 12 is not provided in the end part (the back side upper end 11a and the abdominal side upper end 11b of the absorber 11) in the vertical direction of the absorber 11, but the said end part (the back side of the absorber 11).
  • the width of the absorber 11 is the widest. In the present embodiment, the maximum width W11 of the absorber 11 is about 120 mm.
  • the absorber 11 may be coat
  • the top sheet member 13 is a sheet member made of, for example, a liquid-permeable nonwoven fabric having a larger planar size than the absorbent body 11.
  • the back sheet member 15 is, for example, a sheet member having a larger plane size than the absorbent body 11.
  • the back sheet member 15 includes a liquid-impermeable leak-proof sheet 15 a such as polyethylene or polypropylene, and an outer layer sheet 15 b such as a nonwoven fabric.
  • a laminated sheet having a two-layer structure is exemplified. In the state where the absorber 11 is sandwiched between the back sheet member 15 and the top sheet member 13, the back sheet member 15 and the top sheet member 13 are framed at portions protruding outward from the four sides of the absorber 11. Thus, the absorbent main body 10 is formed.
  • the back sheet member 15 may not include the outer layer sheet 15b and may be configured only by the leak-proof sheet 15a.
  • leg gathers LG leg leg expansion / contraction portions
  • the leg gather LG is formed of a non-woven fabric and includes an elastic member (specifically, thread rubber.
  • LG thread rubber 26a an elastic member that extends and contracts along the vertical direction.
  • the leg gather LG is comprised when the said LG rubber
  • gum rubber 26a provides the side flap 26 with a stretching property.
  • leg side gathers LSG three-dimensional gathers
  • the leg side gather LSG is provided on the skin side of the absorbent main body 10 and plays a role of preventing liquid leakage from the gap between the leg rolls.
  • Leg side gather LSG is formed with the nonwoven fabric.
  • the leg side gather LSG is provided with a vertex 28 at the inner end of the leg side gather LSG in the lateral direction of the absorbent main body 10, and the vertex 28 and the nonwoven fabric outside the vertex 28 rise up.
  • an elastic member specifically, thread rubber; for convenience, referred to as LSG thread rubber 29
  • LSG thread rubber 29 is provided at the apex 28 of the leg side gather LSG.
  • the ventral waist part 40 has a sheet-like member corresponding to the wearer's abdomen.
  • the ventral waist part 40 is a rectangular sheet in plan view made of a nonwoven fabric or the like, and is provided such that the longitudinal direction (long side direction) is along the lateral direction.
  • the ventral waist part 40 is joined to each other using an adhesive such as a hot melt adhesive in a state where the inner layer sheet 41 and the outer layer sheet 42 are overlapped from the skin side in the thickness direction. It is formed by.
  • the interior sheet 41 and the exterior sheet 42 may be a single member (the same member), and the ventral waistline portion 40 may be formed by folding and stacking a single member.
  • the abdominal side waist part 40 is piled up on the other end part 10b of the absorptive main body 10, and is joined and fixed using the same adhesive.
  • a portion of the abdominal waistline portion 40 overlapped with the absorbent main body 10 is provided at a central portion of the abdominal waistline portion 40 in the lateral direction.
  • the notch 45 is provided in the center part in the horizontal direction of the ventral waist part 40, and in the upper end 40b in the vertical direction. This notch 45 is for preventing a wearer's navel (clip) attached to the navel from hitting the diaper 1.
  • FIG. 4 is a diagram for explaining the cut 45.
  • the cut 45 according to the present embodiment has a rectangular shape having a depth D1 and a width W1 as shown in FIG.
  • the vertical depth D1 of the cut 45 is represented by the distance between the vertical upper end 40b of the ventral waist part 40 and the vertical lower end 45a of the cut 45. That is, the depth D1 is the maximum length of the cut 45 in the vertical direction. In the present embodiment, the depth D1 is, for example, about 15 mm.
  • the horizontal width W1 of the cut 45 is represented by the distance between the two side ends 45b at which the vertical upper end 40b of the ventral waist part 40 and the cut 45 intersect. That is, the width W1 is the maximum horizontal length of the cut 45. In the present embodiment, the width W1 is, for example, about 85 mm.
  • the ventral waistline portion 40 contracts in the horizontal direction due to the action of an elastic member such as a ventral side rubber thread 43, which will be described later. Therefore, the cut 45 when the product is viewed in a flat state in a natural state.
  • the width W1 is about 20 to 40 mm. However, it may be wider or narrower depending on the degree of contraction of the elastic member.
  • the lengths of the depth D1 and the width W1 described above are measured in a state where the ventral waistline portion 40 is flattened when contraction force by various elastic members such as the ventral thread rubber 43 is not expressed. Length.
  • the ventral waist part 40 has an edge 46 along the outer edge of the cut 45. As indicated by the hatched portion in FIG. 4, the edge 46 is provided in the range of the distance D ⁇ b> 2 from the outer edge of the cut 45. That is, the edge 46 is a region having a predetermined width D2 along the outer edge of the cut 45 in the ventral waist part 40. In this embodiment, the width D2 of the edge 46 has a length of 2 mm or more and D1 (15 mm) or less. In the following, it is assumed that the width D2 is 2 mm.
  • the shape of the notch 45 is not necessarily a rectangular shape as shown in FIG. 4, and the shape is not limited.
  • 5A and 5B are diagrams for describing a modification of the shape of the cut 45.
  • FIG. 5A the notch 45 is formed in an arc shape curved downward in the vertical direction.
  • the edge 46 is formed in an arc shape having a width D2 along the outer edge of the cut 45 as indicated by the hatched portion in FIG. 5A.
  • the cut 45 is formed as a linear slit having a predetermined length in the vertical direction. In this case, the edge 46 surrounds the outer edge of the cut 45 as shown by the hatched portion in FIG. 5B.
  • the cut 45 is a slit as shown in FIG. 5B
  • the cut 45 is also in the horizontal direction as the ventral waistline 40 is extended in the horizontal direction when the diaper 1 is worn.
  • the slit is deformed into a V-shape by being pulled to both sides and opening the upper side in the vertical direction in the horizontal direction. Thereby, a wearer's navel etc. can be made not to hit the ventral side waist part 40 at the time of wearing of the diaper 1.
  • a plurality of elastic members that expand and contract along the horizontal direction are arranged in the ventral side waistline portion 40 in the vertical direction.
  • This elastic member is, for example, thread rubber or stretchable urethane, and will be referred to as a ventral thread rubber 43 below for convenience.
  • the ventral side rubber thread 43 is bonded and fixed to the ventral side waistline portion 40 with an adhesive while being stretched in the lateral direction.
  • the abdominal waistline portion 40 is given lateral stretchability
  • the waistline opening 1a of the diaper 1 is given stretchability.
  • the inner layer sheet 41 and the outer layer sheet 42 constituting the ventral waist part 40 may be configured by a sheet member (for example, a stretchable nonwoven fabric) that can be stretched in the lateral direction.
  • a sheet member for example, a stretchable nonwoven fabric
  • the stretchability in the lateral direction can be expressed in the ventral waistline portion 40 by the elastic force (contraction force) of the stretchable nonwoven fabric itself.
  • the back waist part 30 has a sheet-like member corresponding to the wearer's back.
  • the dorsal waist part 30 is a rectangular sheet in plan view made of nonwoven fabric or the like, and is provided such that the longitudinal direction (long side direction) is along the lateral direction.
  • the back waistline portion 30 is joined to each other using an adhesive such as a hot melt adhesive in a state where the inner layer sheet 31 and the outer layer sheet 32 are overlapped from the skin side in the thickness direction. It is formed by.
  • the interior sheet 31 and the exterior sheet 32 may be a single member (the same member), and the back waistline portion 30 may be formed by folding and stacking a single member.
  • the back side waist part 30 is piled up on the one end part 10a of the absorptive main body 10, and is joined and fixed. A portion of the back side waistline 30 that is overlapped with the absorbent main body 10 is provided at the center of the back side waistline 30 in the lateral direction.
  • the dorsal waist part 30 is not provided with a cut.
  • the notch 45 is provided for the purpose of preventing the wearer's navel or the like from hitting the diaper 1, and therefore it is not necessary to provide an incision corresponding to the notch 45 on the back side. is there.
  • a plurality of elastic members that extend and contract in the lateral direction are arranged in the back side waistline portion 30 in a similar manner to the abdominal side waistline portion 40. (See FIG. 2).
  • the backside rubber thread 33 is bonded and fixed to the backside waistline portion 30 with an adhesive while being stretched in the lateral direction.
  • the back waistline portion 30 is given lateral stretchability, and the waistline opening 1a of the diaper 1 is stretched.
  • the inner layer sheet 31 and the outer layer sheet 32 constituting the back side waistline portion 30 may be made of a stretchable nonwoven fabric that can be expanded and contracted in the lateral direction.
  • the inner layer sheet 41 and the outer layer sheet 42 (and the ventral side rubber thread 43) constituting the ventral waist part 40 are joined to each other by an adhesive.
  • the portion where the adhesive is provided becomes higher in rigidity and harder than the portion where the adhesive is not provided. Therefore, in the diaper 1, when an adhesive is provided on the edge 46 including the outer edge of the cut 45 (that is, the portion corresponding to the edge of the cut 45), the rigidity of the edge 46 is increased, and the wearer's umbilicus is increased. There is a risk of the surrounding texture getting worse.
  • the rigidity of the edge portion 46 can give excessive stimulation to the circumference of the umbilicus when the diaper 1 is worn, which can increase discomfort.
  • the cut 45 formed to make it difficult for the sheet member to hit the wearer's umbilicus or the like will worsen the touch.
  • the edge 46 of the notch 45 formed in the ventral waist part 40 is not provided with an adhesive so that the wearer can wear it at the time of wearing.
  • the edge 46 prevents the skin 46 from being excessively stimulated.
  • FIGS. 6A to 6C are a schematic plan view and a partial cross-sectional view for explaining a region where the adhesive is provided in the ventral waist part 40 of the diaper 1.
  • FIG. 6A to 6C the area where the edge 46 of the notch 45 is formed is indicated by a hatched area, and the area where the adhesive is provided (hereinafter also referred to as an adhesive area HMA) is indicated by shading.
  • Yes. 6A to 6C are for explaining the state in which the ventral waist part 40 is extended in the lateral direction.
  • a belt-like adhesive region HMA is formed in a predetermined region along the lateral direction in the ventral waist part 40. And the adhesion area
  • region HMA is not formed in the area
  • the adhesive is not provided over the entire region in the width D2 from the lower end of the outer edge of the cut 45 to the lower side.
  • the region below the edge 46 is a region most likely to come into contact with the wearer's navel when the diaper 1 is worn, and when the newborn takes a forward leaning posture while wearing the diaper 1. Is an area that may bite into the skin around the navel.
  • the rigidity of the part is lower than that of the other part (the part of the adhesive area HMA indicated by shading). Therefore, it is possible to make it difficult to irritate the wearer's navel.
  • the width D2 of the edge 46 is preferably about 2 mm. That is, in the diaper 1 of the present embodiment, the adhesive is applied at a distance of at least 2 mm from the lower end 45a of the cut 45. However, the width D2 of the edge 46 may be 2 mm or less depending on the size and type of the diaper 1.
  • a part of the edge 46 on both sides in the lateral direction overlaps with the bonding area HMA. That is, there is a region where an adhesive is provided on both sides of the cut 45 in the lateral direction.
  • the region is at least 1/2 of the width W1 of the notch 45 from the lateral center (see FIG. 4), and is less likely to directly hit the navel when the diaper 1 is worn. Therefore, even if the rigidity of this region is high, the possibility that the wearer's umbilicus portion is excessively stimulated is lower than the case where the rigidity of the region of the lower end 45a of the edge 46 is high. Therefore, it is possible to provide an adhesive on both sides of the edge 46 in the lateral direction.
  • the adhesive coating method for forming the adhesive region HMA is a known adhesive coating method such as spiral coating, ⁇ coating, or control seam coating on at least one predetermined region of the inner layer sheet 41 and the outer layer sheet 42. It is done using.
  • the adhesive is not necessarily provided uniformly over the entire range of the adhesion area HMA indicated by hatching in FIG. 6A.
  • the ventral side rubber thread 43 is sandwiched between the inner layer sheet 41 and the outer layer sheet 42 in a state of being stretched in the lateral direction. (Refer to the AA cross-sectional view in FIG. 6A).
  • ventral side rubber thread 43 Due to the contraction force of the ventral side rubber thread 43, lateral stretchability is imparted to the ventral side waistline portion 40.
  • the arrangement of the ventral side rubber thread 43 is not limited to that shown in FIG. 6A.
  • the ventral side rubber thread 43 is not disposed at all in the bonding area HMA, or the ventral side thread rubber 43 may be disposed in a part other than the bonding area HMA.
  • the adhesion region HMA is provided between the abdominal thread rubber 43 and the outer layer sheet 42, but even if the adhesion region HMA is provided between the abdominal thread rubber 43 and the inner layer sheet 41. good.
  • FIG. 6B shows a case where the adhesion region HMA is wider than the case of FIG. 6A.
  • the adhesive in the ventral waist part 40, the adhesive is not provided in the region of the predetermined width in the center in the lateral direction in the region below the edge 46, and the adhesive is provided in the other regions. It has been. That is, no adhesive is provided in the region of the width D2 from the lower end of the outer edge of the cut 45 (corresponding to the bottom of the cut 45 in FIG. 6B) downward.
  • the whole abdominal waist part 40 is made large by making the area of the junction part of the inner layer sheet
  • the diaper 1 can be formed more firmly by increasing the bonding strength.
  • FIG. 6C shows a case where an adhesive is provided so that the entire edge 46 of the cut 45 and the bonding area HMA do not overlap.
  • the adhesive is not provided in both lateral regions of the edge portion 46 (regions having a width D ⁇ b> 2 outside the lateral edges of the outer edge of the notch 45), the entire edge portion 46 is not provided. It is suppressed that rigidity becomes high. That is, since the entire outer edge (edge) portion of the cut 45 is softly formed, the feel on the wearer's belly side can be further improved.
  • the adhesive is provided on the outer side in the lateral direction (that is, the region on the outer side in the lateral direction of the edge 46) than the region where the adhesive is not provided, the bonding strength of the abdominal waist part 40 as a whole is also increased. Sufficiently secured.
  • 6A to 6C show examples in which no adhesive is provided in the lower region of the edge portion 46 (region having a width D2 from the lower end of the cut 45 to the lower side). If at least a part of the edge portion 46 is not provided with an adhesive, it is possible to suppress an increase in rigidity in that portion, and thus there is an effect of improving the wearer's touch.
  • FIG. 7 is a diagram illustrating a region where an adhesive is provided when the ventral waist part 40 of the diaper 1 is formed of a stretchable sheet member.
  • FIG. 7 shows an example in which the entire edge 46 does not overlap with the bonding region HMA corresponding to FIG. 6C.
  • the ventral side rubber thread 43 is not provided, and the inner layer sheet 41 and the outer layer sheet 42 are directly joined to each other via the adhesive region HMA.
  • the region where the adhesive region HMA is formed is the same as that described with reference to FIGS. 6A to 6C.
  • an adhesive is not provided in at least a part of the edge portion 46 of the cut 45, for example, a lower region of the edge portion 46 (a region having a width D2 downward from the lower end of the cut 45). Thereby, it is suppressed that the rigidity of the edge part 46 becomes high, and the touch in a wearer's umbilicus can be improved.
  • FIG. 8 is a diagram for explaining an adhesive region when an adhesive is provided on the rubber thread. As shown in the AA cross section and the BB cross section of FIG. 8, the inner layer sheet 41 and the outer layer sheet 42 are joined to each other via an adhesive applied to the surface of the ventral side rubber thread 43. That is, the region where the ventral side rubber thread 43 is disposed becomes the bonding region HMA.
  • a substantially striped adhesive region HMA is formed by disposing a plurality of ventral side rubber threads 43 along the horizontal direction intermittently arranged in the vertical direction.
  • the plurality of ventral side rubber threads 43 are arranged so as not to overlap with the edge 46 of the cut 45.
  • the ventral rubber thread 43 is disposed in a region further below the lower end of the edge 46 in the vertical direction.
  • the belly side rubber thread 43 and the adhesive are not provided in the lower region of the edge portion 46 (region having a width D2 from the lower end of the cut 45 to the lower side).
  • FIG. 1 since the bonding region HMA can be freely formed by adjusting the arrangement of the abdominal side rubber thread 43, the degree of freedom in design regarding the elastic force and the bonding strength acting on the abdominal side waistline portion 40 is increased. Furthermore, the usage-amount of an adhesive agent can be decreased as a whole, and it can suppress that rigidity becomes high with an adhesive agent as the whole ventral trunk part 40.
  • ventral thread rubber 43 is provided further outward than both ends of the edge 46.
  • the lateral end that is closer to the edge 46 is It arrange
  • the region 46 on both sides in the lateral direction of the edge 46 (the region of the width D2 laterally outward from both lateral ends of the outer edge of the notch 45 is not provided with the ventral side rubber thread 43 and the adhesive. It is suppressed that rigidity becomes high about the whole part 46, and the touch at the time of diaper 1 wearing can be made more favorable.
  • the adhesive to the ventral side rubber thread 43 is performed using a known adhesive coating method such as slit coating or spiral coating.
  • the adhesive is provided on the entire ventral side rubber thread 43, but the adhesive may be intermittently provided along the longitudinal direction of the ventral side rubber thread 43.
  • FIG. 9 is a diagram illustrating the arrangement of the adhesive that joins the separate sheet member 50 when the separate sheet member 50 is provided in the ventral waist part 40.
  • the separate sheet member 50 is a print sheet that is made of a film, a nonwoven fabric, or the like and has a predetermined color or image attached to the surface thereof. By providing such a separate sheet member 50, the design of the diaper 1 can be improved.
  • the separate sheet member 50 is provided sandwiched between the inner layer sheet 41 and the outer layer sheet 42, but the separate sheet member 50 is located on the non-skin side (that is, the ventral waist part) than the outer layer sheet 42. 40 may be provided on the skin side with respect to the inner layer sheet 41.
  • the separate sheet member 50 is a sheet provided on the non-skin side of the absorptive main body 10 in the ventral side waistline portion 40. 9 to 12 below, the ventral side rubber thread 43 is omitted, but the ventral side rubber thread 43 may be provided.
  • an adhesive for joining the separate sheet member 50 is not provided in the lower region of the edge 46 (region having a width D2 from the lower end of the cut 45 to the lower side).
  • an adhesive region HMA is formed by providing an adhesive on the non-skin side surface of the separate sheet member 50.
  • the separate sheet member 50 is joined to the outer layer sheet 42 by the adhesion region.
  • the skin side of the separate sheet member 50 is joined to the inner layer sheet 41 by an adhesive that joins the inner layer sheet 41 and the outer layer sheet 42.
  • the adhesive on the back side and the ventral side may be reversed.
  • the adhesive is provided in a pattern corresponding to FIG. 6C in which the adhesive region HMA and the edge 46 of the cut 45 do not overlap, but any of the patterns described in FIGS. Is equally applicable.
  • FIG. 9 only the adhesion region HMA formed by the adhesive that joins the ventral waist part 40 and the separate sheet member 50 is described.
  • the arrangement of other adhesives (for example, an adhesive that joins the inner layer sheet 41 and the outer layer sheet 42) is as described in FIG.
  • FIGS. 10A and 10B are diagrams illustrating the arrangement of the adhesive that joins the folded sheet 42f when the folded sheet 42f is provided.
  • the folded sheet 42f is a part of the outer layer sheet 42, but will be described as another member here.
  • the folded sheet 42f is provided, first, the longitudinal length of the outer layer sheet 42 is set longer than that of the inner layer sheet 41, and the upper end in the longitudinal direction of the outer layer sheet 42 is overlapped in the thickness direction. It is constituted so as to protrude from the upper end in the vertical direction. Then, the protruding portion of the outer layer sheet 42 is folded back to the lower side in the vertical direction (skin side in the thickness direction) as shown in FIG.
  • the joining of the folded sheet 42f and the inner layer sheet 41 is performed by an adhesive provided at the lower end portion in the longitudinal direction of the folded sheet 42f as shown in FIG. 10A.
  • the adhesive (bonding area HMA) for bonding the folded sheet 42f is not provided in the lower area of the edge 46 (area having a width D2 from the lower end of the cut 45 to the lower side). Thereby, the rigidity of the lower area
  • an adhesive may be provided in a part of the region on both sides in the lateral direction of the edge 46 and the region outside the edge 46. The reason for this is the same as that described above with reference to FIG. 6A. In FIG. 10A, the adhesive is provided in a pattern corresponding to the above-described FIG. 6A, but any of the patterns described in FIGS. 6 to 8 can be similarly applied.
  • the position of the upper end of the inner layer sheet 41 may be lower than the lower end 45a of the cut 45 as shown in FIG. 10B.
  • the upper region Becomes softer and feels better when the diaper 1 is worn.
  • the vertical length L42f from the upper end to the lower end of the folded sheet 42f is formed to be longer than the vertical length (D1 + D2) from the upper end of the cut 45 to the lower end of the edge 46. ing. Then, an adhesive region HMA is formed at a position below the lower end of the edge 46. If L42f is shorter than D1 + D2, the lower end portion of the folded sheet 42f cannot be bonded with an adhesive in the region below the edge 46. That is, a non-joining portion is formed at the lower end portion of the folded sheet 42f. In this case, when the diaper 1 is attached / detached, the non-joined part may be rolled up or may interfere with the attaching / detaching operation. On the other hand, by making L42f longer, it is possible to join the entire lower end of the folded sheet 42f to the inner layer sheet 41 while preventing the lower end of the edge 46 from overlapping the bonding area HMA.
  • FIG. 11 is a diagram illustrating the arrangement of the adhesive that joins the cover sheet member 60 when the cover sheet member 60 is provided.
  • the adhesive (bonding area HMA) for joining the cover sheet member 60 is also provided in the lower area of the edge 46 (the area having a width D2 from the lower end of the cut 45 to the lower side), as in the above-described embodiments. Absent. Thereby, the rigidity of the lower area
  • cover sheet member 60 may be provided when the folded sheet 42f is not provided. In this case, the cover sheet member 60 covers the upper end portion of the absorbent main body 10 in the thickness direction so that the upper end edge of the absorbent main body 10 does not directly contact the wearer's skin.
  • FIG. 12 is a view for explaining the arrangement of the adhesive that joins the absorbent main body 10 and the ventral waist part 40.
  • an incision having the same shape as the incision 45 is formed at the end of the absorptive main body 10 on the abdominal side in the longitudinal direction in a state of being overlapped with the abdominal waistline portion 40. Therefore, a part of the absorbent main body 10 overlaps with the edge 46 of the cut 45 of the ventral waist part 40 in the thickness direction.
  • FIG. 12 is a view for explaining the arrangement of the adhesive that joins the absorbent main body 10 and the ventral waist part 40.
  • the adhesive (adhesive region HMA) that joins the absorbent main body 10 and the ventral waistline portion 40 (inner layer sheet 41) is a region below the edge portion 46 (of the notch 45. Since it is not provided in the area
  • the adhesive is provided in a pattern corresponding to FIG. 6A described above, but any of the patterns described in FIGS.
  • an adhesive region HMA is formed for each of the plurality of “other members”.
  • the adhesive for joining the separate sheet member 50 and the outer layer sheet 42 and the adhesive for joining the absorbent main body 10 and the inner layer sheet 41 are separately applied.
  • the effect of weakening the stimulus given to the wearer's umbilicus can be obtained simply by preventing any one of these adhesives from being provided on the edge 46.
  • the so-called three-piece type diaper 1 constituted by the three parts 10, 30, and 40 has been described as an example of the disposable diaper.
  • the type of the disposable diaper is not limited to this.
  • the present invention can also be applied to a pants-type disposable diaper composed of two parts, an integrated exterior member in which the abdominal waist part 40 and the back waist part 30 are integrally formed, and the absorbent main body 10. .
  • a cut is provided in the central portion in the horizontal direction and the upper end portion in the vertical direction of the waist portion on the abdomen side of the integrated exterior member.
  • an adhesive that joins the inner layer sheet, the outer layer sheet, and other members (for example, a print sheet, etc.) constituting the integrated exterior member (ventral side waistline portion) is not provided on at least a part of the edge of the cut. By doing so, it is possible to suppress an increase in rigidity around the cut. Thereby, it is suppressed that an excessive irritation

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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

L'objectif de la présente invention est de fournir une couche jetable ayant une fente (45) dans l'extrémité supérieure d'une section de taille côté abdomen (40) où la fente (45) est moins susceptibles d'irriter la peau d'un utilisateur lorsque la couche est portée. La couche jetable a une direction longitudinale, une direction latérale, et une direction d'épaisseur se croisant mutuellement, et a une section de taille destinée à être positionnée autour de la taille de l'utilisateur. La couche jetable est caractérisée en ce que la section de taille comporte une feuille de couche interne (41) et une feuille de couche externe (42), qui se chevauchent et sont fixées l'une à l'autre dans la direction de l'épaisseur, la fente (45) est disposée au centre, dans la direction latérale, de la section de taille sur le côté abdomen et à l'extrémité supérieure dans la direction longitudinale, et au moins l'un d'un adhésif pour fixer la feuille de couche interne (41) et la feuille de couche externe (42) et d'un adhésif pour fixer la feuille de couche interne ou la feuille de couche externe et un autre élément n'est pas disposé dans, au moins, une zone d'un bord (46) le long du bord externe de la fente (45) sur le côté abdomen de la section de taille.
PCT/JP2015/086267 2014-12-25 2015-12-25 Couche jetable WO2016104722A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BR112017013353-9A BR112017013353B1 (pt) 2014-12-25 2015-12-25 Fralda descartável
CN201580070877.0A CN107106351A (zh) 2014-12-25 2015-12-25 一次性尿布
KR1020177019485A KR102483846B1 (ko) 2014-12-25 2015-12-25 일회용 기저귀

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2014-262708 2014-12-25
JP2014262708A JP6364346B2 (ja) 2014-12-25 2014-12-25 使い捨ておむつ
JP2015252865A JP6427482B2 (ja) 2015-12-25 2015-12-25 使い捨ておむつ
JP2015-252865 2015-12-25

Publications (1)

Publication Number Publication Date
WO2016104722A1 true WO2016104722A1 (fr) 2016-06-30

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Application Number Title Priority Date Filing Date
PCT/JP2015/086267 WO2016104722A1 (fr) 2014-12-25 2015-12-25 Couche jetable

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KR (1) KR102483846B1 (fr)
BR (1) BR112017013353B1 (fr)
WO (1) WO2016104722A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08510942A (ja) * 1993-06-03 1996-11-19 ザ、プロクター、エンド、ギャンブル、カンパニー 動的フィットする吸収性物品
JP2012135446A (ja) * 2010-12-27 2012-07-19 Kao Corp 使い捨ておむつ
JP2012192115A (ja) * 2011-03-18 2012-10-11 Oji Nepia Co Ltd 使い捨ておむつ
JP2014061255A (ja) * 2012-06-18 2014-04-10 Uni Charm Corp 吸収性物品及び吸収性物品の製造方法
JP2014104313A (ja) * 2012-11-30 2014-06-09 Daio Paper Corp パンツ型使い捨ておむつ

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2604867B3 (fr) * 1986-10-13 1989-05-12 Gamas Jerome Couche jetable avec compresse ombilicale
US8506546B2 (en) * 2005-04-20 2013-08-13 Kimberly-Clark Worldwide, Inc. Diaper with umbilical feature

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08510942A (ja) * 1993-06-03 1996-11-19 ザ、プロクター、エンド、ギャンブル、カンパニー 動的フィットする吸収性物品
JP2012135446A (ja) * 2010-12-27 2012-07-19 Kao Corp 使い捨ておむつ
JP2012192115A (ja) * 2011-03-18 2012-10-11 Oji Nepia Co Ltd 使い捨ておむつ
JP2014061255A (ja) * 2012-06-18 2014-04-10 Uni Charm Corp 吸収性物品及び吸収性物品の製造方法
JP2014104313A (ja) * 2012-11-30 2014-06-09 Daio Paper Corp パンツ型使い捨ておむつ

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BR112017013353A2 (pt) 2018-03-06
KR20170099943A (ko) 2017-09-01
KR102483846B1 (ko) 2023-01-02

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