WO2016208255A1 - Article absorbant - Google Patents

Article absorbant Download PDF

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Publication number
WO2016208255A1
WO2016208255A1 PCT/JP2016/061660 JP2016061660W WO2016208255A1 WO 2016208255 A1 WO2016208255 A1 WO 2016208255A1 JP 2016061660 W JP2016061660 W JP 2016061660W WO 2016208255 A1 WO2016208255 A1 WO 2016208255A1
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WO
WIPO (PCT)
Prior art keywords
longitudinal direction
groove
absorbent article
absorber
width direction
Prior art date
Application number
PCT/JP2016/061660
Other languages
English (en)
Japanese (ja)
Inventor
友美 衛藤
中嶋　海陽
直夢 宮前
田中　嘉則
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
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 CN201680036987.XA priority Critical patent/CN107847376B/zh
Publication of WO2016208255A1 publication Critical patent/WO2016208255A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—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
    • A61F13/53—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
    • A61F13/533—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 having discontinuous areas of compression

Definitions

  • the present invention relates to an absorbent article.
  • an absorbent article provided with an absorbent having liquid absorbency such as an absorbent pad used for disposable diapers
  • an absorbent article when providing a groove portion by embossing or the like in an absorbent body having a relatively high rigidity and making the absorbent body easily bend along the groove portion, the fitting property at the time of wearing is improved.
  • Patent Document 1 by forming a groove extending in the longitudinal direction of the absorbent body, the absorbent body is deformed in half along the longitudinal direction, and the shape is easy to pass through the gap between the wearer's crotch.
  • An absorbent article is disclosed.
  • Patent Document 1 since the entire absorbent body is deformed in half along the longitudinal direction, the three-dimensional shape of the absorbent body does not conform to the part in a flat part on the abdominal side or the back side of the human body. May cause discomfort and discomfort to the person.
  • the present invention has been made in view of the above-described problems, and an object of the present invention is to provide an absorbent article capable of realizing a good fit when worn.
  • a main invention for achieving the above object is an absorbent article that includes a liquid-absorbing absorber and has a longitudinal direction, a width direction, and a thickness direction that are orthogonal to each other, and the absorbent body includes the longitudinal direction. And a first groove part that guides the absorber to bend in the thickness direction, and passes through the center of the first groove part in the width direction so as to intersect a straight line along the longitudinal direction. And a plurality of second groove portions arranged in the longitudinal direction, and when the absorber is in a planar state, the second groove portion disposed on the rearmost side in the longitudinal direction among the plurality of second groove portions.
  • the absorbent article is characterized in that two groove portions and a rear end portion in the longitudinal direction of the first groove portion are separated from each other.
  • FIG. 2A is a plan view illustrating the diaper 1 in a state of being stretched along the longitudinal direction.
  • 2B is a schematic cross-sectional view illustrating the AA cross section of FIG. 2A.
  • FIG. 3A is a plan development view illustrating a state in which the diaper 1 in a state of being stretched along the longitudinal direction is developed in the middle of the manufacturing process.
  • FIG. 3B is a schematic cross-sectional view showing the BB cross section of FIG. 3A. It is a figure explaining an example of the manufacturing process of the diaper. 3 is a plan view for explaining details of the absorber 11.
  • FIG. 6A and 6B are diagrams for explaining a state of deformation of the absorbent body 11 when the diaper 1 is worn.
  • FIG. 1 It is a schematic plan view when the diaper 1 of underpants type shape is seen from the back side (back side). It is a top view showing the state which developed the 3 piece type disposable diaper (diaper 2) as an example of an absorptive article. It is a top view showing the sanitary napkin (napkin 3) as an example of an absorbent article.
  • An absorbent article comprising a liquid absorbent absorber and having a longitudinal direction, a width direction, and a thickness direction orthogonal to each other, wherein the absorbent body is formed along the longitudinal direction, and the absorbent body is A first groove portion that is guided to bend in the thickness direction, and a second groove that is formed so as to intersect with a straight line passing through the center in the width direction of the first groove portion along the longitudinal direction and arranged in the longitudinal direction.
  • the absorbent body in accordance with the wearer's body shape, in the region where the first groove portion in the vicinity of the central portion in the longitudinal direction is formed, the absorbent body is deformed into a mountain shape protruding toward the skin side, In the region where the second groove portion at the rear in the longitudinal direction is formed, the absorber is not deformed into a mountain shape, and it is easy to maintain a substantially planar shape. Thereby, favorable fitting property is realizable at the time of wearing of this absorptive article.
  • the absorbent article has a main body portion including the absorber and a stretchable belt portion, and a waistline opening and a pair of leghole openings are formed.
  • the absorbent body when the diaper-type absorbent article is worn, the absorbent body is appropriately deformed in each of the back region, the central region, and the ventral region, so that the three-dimensional shape of the absorbent body is obtained. It becomes easy to adjust to the shape of the human body, and a good fit can be given to the wearer.
  • Such an absorbent article has a longitudinal direction, and the absorbent body and the main body are folded in two at a predetermined position in the longitudinal direction while the longitudinal direction is arranged along the longitudinal direction.
  • One end side and the other end side in the longitudinal direction of the main body portion are connected via the belt portion, and at least a part of the waistline opening is formed by an upper edge in the longitudinal direction of the belt portion.
  • a pair of leg hole openings are formed by the lower edge in the longitudinal direction of the belt part and the both end edges in the width direction of the main body part, and the waist part opening side in the longitudinal direction is formed. It is desirable that a joining portion that is inclined toward the outer side in the width direction from at least to the leg opening is formed to join at least the main body portion and the belt portion.
  • the fit of the absorbent body is improved, and the absorbent article is prevented from bumping at the time of wearing.
  • the appearance can be as clean as underwear such as shorts and briefs.
  • the first groove portion is formed by squeezing the absorber from the non-skin side in the thickness direction.
  • the absorber easily bends to the skin side in the thickness direction along the first groove portion. Therefore, since an absorber changes to the mountain shape which protruded to the skin side and the said deformation
  • the second groove portion is disposed so as to spread outward in the width direction from the front side in the longitudinal direction toward the rear side.
  • the second groove portion is arranged in a parabolic shape toward the rear in the longitudinal direction, so that the force propagated from the first groove portion is outward in the width direction via the second groove portion. It becomes easy to act toward. Thereby, it becomes easy to expand an absorber to the outer side of the width direction, and it becomes easy to keep an absorber in the substantially planar shape in the area
  • the second groove portion is disposed so as to spread outward in the width direction from the front side to the rear side in the longitudinal direction, and the second groove portion is disposed in the rear side in the longitudinal direction.
  • the tensile force to the outside in the width direction by the stretchable belt part can be applied to the absorbent body via the joint part. That is, since the tensile force acting in the direction perpendicular to the joint and the direction of the second groove portion are easily aligned, the tensile force acts on the absorber efficiently. Thereby, since an absorber is pulled to the outer side of the width direction and it becomes easy to be kept flat, fit property can be improved more.
  • a plurality of third groove portions are formed on the front side in the longitudinal direction from the second groove portions so as to intersect the first groove portions.
  • the surface shape (curved surface shape) of the absorber is easily maintained in the region where the third groove portion is provided, and generation of wrinkles and biting into the heel portion are suppressed.
  • an absorber becomes easy to deform
  • the rear end portion in the longitudinal direction of the first groove portion is disposed at the position of the intersection of the second groove portion and the first groove portion that is disposed on the most front side in the longitudinal direction. It is desirable that
  • the absorber is deformed into a mountain shape on the front side (center region) with respect to the rear end portion in the longitudinal direction of the first groove portion, and the absorber is flat on the rear side (back region). It becomes easy to keep in shape. That is, the deformation of the absorber is easily controlled in the central region and the back region. This makes it easy to achieve good fit not only in the central region but also in the back region.
  • the absorbent body has a constricted portion in which a distance in the width direction is narrowed in a region between the front end portion and the rear end portion in the longitudinal direction, and the first groove portion.
  • the front end portion in the longitudinal direction is disposed between the position where the distance in the width direction of the constricted portion is the smallest in the longitudinal direction and the front end portion position of the constricted portion in the longitudinal direction. It is desirable.
  • the portion where the absorbent body is sandwiched between the wearer's legs is reduced.
  • the absorber is not easily deformed into a mountain shape. Therefore, it becomes easy for the absorber to maintain a curved surface shape along the abdomen of the body in the ventral region, and it becomes easy to realize good fit not only in the central region but also in the ventral region.
  • the first groove portion and the second groove portion are formed by squeezing the absorber, and the density of the absorber in the first groove portion is the same as that in the second groove portion. It is desirable that the density is higher than the density of the absorber.
  • the absorber is more easily bent in the first groove portion having a higher density than in the second groove portion having a lower density.
  • an absorber becomes easy to deform
  • a pants-type disposable diaper 1 (hereinafter also referred to as “diaper 1”) will be described as an example of the absorbent article according to the present embodiment.
  • the absorbent article which concerns on this embodiment is not limited to a disposable diaper.
  • FIG. 1 is a schematic perspective view showing the appearance of the diaper 1.
  • the diaper 1 has the absorptive main body 10 (main body part), the leg gather part 20, and the belt part 30, and has a pants-type shape as shown in FIG. 1 when worn.
  • the diaper 1 has a “longitudinal direction” and a “lateral direction” orthogonal to each other in the pant-type state of FIG. 1.
  • the waist part opening part HB is formed in the upper side of the vertical direction of the diaper 1, and a pair of leg periphery opening part HL is formed in the both sides of a horizontal direction.
  • the front side of the diaper 1 is a part which covers a wearer's belly side at the time of wear, and a back side is a part which covers a wearer's back side.
  • FIG. 2A is a plan view illustrating the diaper 1 in a state of being stretched along the longitudinal direction of the absorbent main body 10.
  • 2B is a schematic cross-sectional view illustrating the AA cross section of FIG. 2A.
  • FIG. 3A is a plan development view illustrating a state in which the diaper 1 in a state of being stretched along the longitudinal direction of the absorbent main body 10 is developed during the manufacturing process.
  • FIG. 3B is a schematic cross-sectional view showing the BB cross section of FIG. 3A.
  • the diaper 1 is in a planar state as shown in FIG. 2A at the final stage of the manufacturing process.
  • the manufacturing process of the diaper 1 will be described later with reference to FIG.
  • the planar diaper 1 has a “longitudinal direction”, a “width direction”, and a “thickness direction” as three directions orthogonal to each other.
  • the longitudinal direction of the diaper 1 in a planar state is a direction along the longitudinal direction of the absorbent main body 10. This longitudinal direction is a direction corresponding to the longitudinal direction in the pant-type state of FIG. 1, but strictly speaking, the longitudinal direction in the pant-type state and the longitudinal direction in the planar state are slightly different, so it is necessary.
  • the state in which the diaper 1 is stretched along the longitudinal direction means that the diaper 1 is stretched in the longitudinal direction against the contraction force by the leg gather elastic member 23 and the belt elastic member 33 described later.
  • the shape of the diaper 1 in the state of being extended in the longitudinal direction is the same as the shape of the diaper 1 when it is flatly extended when the contraction force by various elastic members such as the leg gather elastic member 23 is not expressed. It is.
  • the side which hits a wearer's belly side be the front side (belly side) of a longitudinal direction
  • the side which hits a wearer's back side be a longitudinal direction.
  • the rear side back side
  • the width direction of the diaper 1 in a planar state is the same concept as the lateral direction of the diaper 1 in the pants-type state in FIG.
  • the thickness direction of the diaper 1 in a planar state is a direction orthogonal to the longitudinal direction and the width direction, respectively, and the side in contact with the wearer's skin is referred to as “skin side” and the opposite side is referred to as “non- "Skin side”.
  • the absorbent main body 10 (main body portion) is disposed along the longitudinal direction, and a pair of absorbent main body 10 is disposed on both sides in the width direction.
  • a leg gather portion 20 is disposed.
  • a pair of belt part 30 is arrange
  • the leg gather portion 20 and the belt portion 30 are formed by a side seat 40 that is one sheet member.
  • the leg gather portion 20 and the belt portion 30 are formed by folding the side sheet 40 inward in the width direction along a folding line FL extending in the longitudinal direction.
  • the leg gather portion 20 is provided with a leg gather cutout portion 25 that is partially cut off at the width direction outer end portion 20e Albany (folding line FL).
  • the belt portion 30 is provided with a belt cutout portion 35 that is partially cut off at the width direction outer end portion 30e Albany (folding line FL).
  • the leg gather cutout portion 25 and the belt cutout portion 35 form a leg opening HL.
  • the belt portion 30 is composed of the absorbent main body 10 (strictly speaking, the absorbent main body 10 is defined by a pair of first joint portions WL1 inclined from the longitudinal front end 10ef of the absorbent main body 10 toward the leg opening HL. The top sheet 13) disposed on the skin side and the leg gathers 20 are joined. Similarly, the belt portion 30 includes the absorbent main body 10 and the leg gather portion 20 by a pair of second joint portions WL2 inclined from the longitudinal rear end portion 10er of the absorbent main body 10 toward the leg opening HL. It is joined.
  • the first joint WL1 and the second joint WL2 are joined by known welding means such as thermal welding or ultrasonic welding, but may be joined using an adhesive such as a hot melt adhesive. .
  • the absorbent main body 10 While the diaper 1 having such a flat state is opened on the pair of belt portions 30 and 30 with the widthwise inner end portions 30ei and 30ei on both sides in the width direction, the absorbent main body 10 is moved around the central position CL in the longitudinal direction. Fold it. Thereby, it will be in the state which can be worn as the underpants type diaper 1 with which the one end part side and multi-end side of the longitudinal direction of the absorptive main body 10 were connected via the belt parts 30 and 30 (refer FIG. 1). At this time, the waist opening HB is formed by the longitudinal front end 10ef, the longitudinal rear end 10er of the absorbent main body 10, and the inner ends 30ei of the pair of belt portions 30.
  • the absorbent main body 10 is cut in the longitudinal direction by cutting a substantially rectangular member (see FIG. 3A) extending in the longitudinal direction along the first joint WL1 and the second joint WL2.
  • Each end portion is a sheet-like member having a tapered shape in a plan view.
  • the absorptive main body 10 is provided with an absorbent body 11, a top sheet 13 (corresponding to a skin-side sheet) provided by covering the absorbent body 11 from the skin side, and covering the absorbent body 11 from the non-skin side. And a back sheet 15 (corresponding to a non-skin side sheet).
  • Each of these members 13, 11, and 15 is joined to a member adjacent in the thickness direction by a hot melt adhesive or the like (see FIGS. 2B and 3B).
  • Examples of the application pattern of the adhesive include an ⁇ pattern, a spiral pattern, and a stripe pattern, and the same applies to other adhesives that appear later.
  • the absorbent body 11 has an absorbent core in which a predetermined liquid absorbent material is formed into a predetermined shape (for example, a substantially hourglass shape in plan view), and a core wrap sheet that covers the outer peripheral surface of the absorbent core, It is a member that absorbs excreted fluid such as urine when the diaper 1 is worn.
  • a liquid absorptive material liquid absorptive granular materials, such as liquid absorptive fibers, such as pulp fiber, and superabsorbent polymer (what is called SAP) can be illustrated.
  • SAP superabsorbent polymer
  • As the core wrap sheet a liquid permeable sheet such as tissue paper or nonwoven fabric can be used.
  • a plurality of grooves 12 as shown in FIGS. 2A and 3A are provided on the surface of the absorber 11.
  • the groove portion 12 has a function of deforming the absorbent body 11 according to the shape of the wearer's body when the diaper 1 is worn, so that the absorbent main body 10 can easily fit the wearer's body. Details of the absorber 11 and the groove 12 will be described later.
  • the top sheet 13 is formed of a flexible sheet member having liquid permeability, and for example, a sheet member such as an air-through nonwoven fabric can be used.
  • the planar size of the top sheet 13 is a size that protrudes from both sides of the absorbent body 11 in the longitudinal direction and both sides in the width direction.
  • the back sheet 15 is formed by stacking and joining two sheet members, a leak-proof sheet 15f and an exterior sheet 15n, in the thickness direction.
  • the leak-proof sheet 15 f is a liquid-impermeable sheet member made of a polyethylene (PE) film or a polypropylene (PP) film, and is disposed on the skin side in the thickness direction of the back sheet 15.
  • the exterior sheet 15n is a sheet member made of a nonwoven fabric or the like, and is a member that is disposed on the non-skin side in the thickness direction of the back sheet 15 and constitutes the exterior of the absorbent main body 10.
  • the back sheet 15 is not limited to the above configuration as long as it has a certain leak-proof property.
  • the back sheet 15 is also a planar sheet that protrudes from both sides in the longitudinal direction and the width direction of the absorber. Then, the top sheet 13 and the back sheet 15 are joined to each other in the thickness direction so that the substantially V-shapes at both ends in the longitudinal direction are substantially aligned, whereby the absorber is interposed between the sheets 13 and 15. Is held.
  • the leg gather portion 20 is a sheet member that is long in the longitudinal direction joined to both sides in the width direction of the absorbent main body 10, and when forming the diaper 1 into a pants shape, Shrinks along the leg opening HL to form a bowl-shaped leg gather.
  • the leg gather part 20 is formed by overlapping two sheets of a first sheet 21 and a second sheet 22 made of a nonwoven fabric or the like in the thickness direction.
  • joining of the absorbent main body 10 and the leg gather portion 20 is hot in a state where the inner end portion in the width direction of the leg gather portion 20 is sandwiched between the top sheet 13 and the back sheet 15 of the absorbent main body 10. This is done by bonding with a melt adhesive or the like.
  • the belt portion 30 is a sheet member that is long in the longitudinal direction provided on both sides in the width direction of the leg gather portion 20, and when the diaper 1 is formed into a pants shape, A belt is formed (see FIG. 1).
  • the belt part 30 is formed by overlapping two sheets of a first sheet 31 and a second sheet 32 made of nonwoven fabric or the like in the thickness direction.
  • the leg gather portion 20 and the belt portion 30 are integrally formed by the side seat 40 that is one member. That is, the first sheet 21 of the leg gather portion 20 and the first sheet 31 of the belt portion 30 are constituted by one sheet member 41, and the second sheet 22 of the leg gather portion 20 and the second sheet 32 of the belt portion 30 are also one.
  • the sheet member 42 is used.
  • the portion of the side seat 40 that is on the inner side in the width direction than the fold line FL is the leg gather portion 20
  • the portion that is on the outer side in the width direction of the fold line FL is the belt portion 30.
  • a leg gather elastic member 23 made of thread rubber or the like is disposed between the first sheet 21 and the second sheet 22 of the leg gather portion 20 in an elongated state and fixed by a hot melt adhesive or the like. .
  • two leg gather elastic members 23 are arranged at positions further inside than the width direction inner end portion of the leg gather notch 25 (that is, the width direction inner end portion of the leg opening HL). ing.
  • the leg gather elastic member 23 gives the leg gather portion 20 elasticity in the longitudinal direction. Thereby, when forming the diaper 1 in a pants shape, the leg gather part 20 contracts along the leg opening HL, and a bowl-shaped leg gather is formed, thereby improving the fit of the wearer around the leg. be able to.
  • a belt elastic member 33 made of thread rubber or the like is disposed between the first sheet 31 and the second sheet 32 of the belt portion 30 so as to extend in the longitudinal direction, and is fixed by a hot melt adhesive or the like.
  • a plurality of belt elastic members 33 are arranged in the width direction in a region further outward than the width direction outer end portion of the belt cutout portion 35 (that is, the width direction outer end portion of the leg opening HL). Is arranged.
  • the belt elastic member 33 imparts stretchability in the longitudinal direction to the belt portion 30.
  • leg gather elastic member 23 and the belt elastic member 33 are arranged at positions that do not overlap each other in the thickness direction as shown in FIG. 2B. That is, when viewed from the upper side in the thickness direction, the leg gather elastic member 23 and the belt elastic member 33 are in a positional relationship such that they are alternately arranged in the width direction. Thereby, the area
  • a stretchable sheet 43 formed of a stretchable nonwoven fabric or the like is provided between the sheet member 41 (21, 31) and the sheet member 42 (22, 32).
  • the stretchable sheet 43 is a belt-like elastic sheet member wider than the width in the width direction of the leg opening HL as shown by the hatched portion in FIG. 3A, and has an opening having the same shape as the leg opening HL.
  • the sheet members 41 and 42 are fixed to the sheet members 41 and 42 with a hot melt adhesive or the like in a state of being elongated in the longitudinal direction. Thereby, the peripheral part of the leg periphery opening part HL is reinforced by the elastic sheet 43 over the perimeter.
  • the fitting property in the peripheral part of the leg periphery opening part HL improves more by the shrinkage force expressed by the planar expansion-contraction sheet 43.
  • fit property can be improved by arrange
  • a so-called gear stretching process is performed on a non-woven fabric having a substantially elastic elastomer fiber such as a polyurethane elastomer and a thermoplastic resin fiber such as a polyolefin resin.
  • a substantially elastic elastomer fiber such as a polyurethane elastomer
  • a thermoplastic resin fiber such as a polyolefin resin.
  • the width direction outer side end region of the belt portion 30 is folded twice inside in the width direction at the first belt end fold line FLb1 and the second belt end fold line FLb2. It is fixed in the folded state with a hot melt adhesive or the like. That is, the second belt end fold line FLb2 is a portion that becomes the inner end 30ei in the width direction of the belt 30 and a portion that becomes the waist opening HB in FIG. 2A.
  • the waist opening HB By setting the waist opening HB to such an end folding structure, when the diaper 1 is worn, the stress around the wearer's waist can be reduced.
  • the width direction end region does not necessarily have to have a folded structure as described above.
  • FIG. 4 is a diagram for explaining an example of the manufacturing process of the diaper 1.
  • the diaper 1 is manufactured by performing predetermined processing (S101 to S105) on the base sheet while transporting the base sheet as a material in the transport direction.
  • the conveyance direction of the sheet member is referred to as “MD direction”
  • the direction orthogonal to the MD direction is referred to as “CD direction”.
  • the MD direction is a direction along the longitudinal direction (vertical direction) of FIG. 2A
  • the CD direction is a direction along the width direction of FIG. 2A.
  • the sheet members that are the base sheets of the diaper 1 in this embodiment are the absorbent main body continuous sheet 10A and the side continuous sheet 40A.
  • the absorbent main body continuous sheet 10A is a sheet member in which a plurality of absorbent main bodies 10 are continuously arranged in the longitudinal direction (longitudinal direction). That is, the absorbent main body continuous sheet 10 ⁇ / b> A is a sheet member in which a plurality of absorbent bodies 11 are sandwiched between the continuous sheet of the top sheet 13 extending in the MD direction and the continuous sheet of the back sheet 15.
  • the side continuous sheet 40 ⁇ / b> A is a sheet member in which the side sheets 40 that form the leg gather portion 20 and the belt portion 30 are continuously arranged in the longitudinal direction (vertical direction).
  • the base sheet in which the side continuous sheet 40A is bonded to both sides in the CD direction (width direction) of the absorbent main body continuous sheet 10A is continuously conveyed in the MD direction (S101). .
  • leg gather notch 25 and the belt notch 35 serving as the leg opening HL at the positions straddling the folding line FL on both sides of the absorbent body 11 in the CD direction (width direction) with respect to the conveyed base sheet. Is formed (S102).
  • the notch is formed using a cutter roll (not shown). 4 is a state corresponding to the diaper 1 in the unfolded state in FIG. 3A.
  • a portion corresponding to the belt portion 30 of the side continuous sheet 40A is folded back inward in the CD direction (width direction) by a folding line FL, and a part of the absorbent main body 10 and the leg gather portion and the belt portion 30 are joined.
  • the state is overlapped in the thickness direction (S103).
  • first joint portion WL1 and the second joint portion WL2 are formed by joining means such as ultrasonic fusion and thermal fusion, and the belt portion 30, the absorbent main body 10, and the leg gather portion 20 are joined ( S104).
  • the base sheet is cut (S105). Specifically, the diaper 1 is cut for each individual from the base sheet that continues in the MD direction, and further, the four corners of the rectangle are cut along the first joint WL1 and the second joint WL2. Thereby, the diaper 1 of the planar state shown by FIG. 2A is formed.
  • FIG. 5 is a plan view illustrating details of the absorber 11.
  • FIG. 5 shows a case where the absorber 11 is in a planar state. That is, it is the state extended
  • 6A and 6B are diagrams for explaining a state of deformation of the absorbent body 11 when the diaper 1 is worn.
  • the absorber 11 is formed in a substantially hourglass shape in a plan view having a constricted portion 11n having a narrower distance in the width direction between the front end and the rear end in the longitudinal direction, and the constricted portion 11n.
  • the narrowest part having the narrowest width is formed at the position MN in the longitudinal direction.
  • the constricted portion 11n is a portion that comes into contact with the wearer's groin portion when the diaper 1 is worn, and the interference between the wearer's buttocks and the absorbent body 11 is alleviated by narrowing the interval in the width direction. While making it difficult for a person to feel uncomfortable or uncomfortable, the fit at the time of wearing can be improved.
  • a plurality of grooves 12 are formed in the absorber 11.
  • three types of groove parts 12 are formed: a first groove part 121, a second groove part 122, and a third groove part 123 (see FIG. 5).
  • the 1st groove part 121 is formed in the linear form along the longitudinal direction in the approximate center of the width direction of the absorber 11.
  • FIG. The front end 121ef in the longitudinal direction of the first groove 121 is provided between the position MN of the narrowest part and the position 11nf of the front end of the constricted part 11n.
  • the rear end 121er in the longitudinal direction of the first groove 121 intersects with a groove (second groove 122A described later) formed on the foremost side in the longitudinal direction among the plurality of second grooves 122 provided. It is provided in the position.
  • the region where the first groove 121 is provided is a region that comes into contact with the groove (crack) of the buttocks from the wearer's vaginal opening when the diaper 1 is worn. Hereinafter, this region is also referred to as a central region.
  • the 1st groove part 121 is a pressing part formed by pressing the surface of the absorber 11 with a predetermined pressing means, and has a function as a bending induction part which guides the absorber 11 to bend in the thickness direction. .
  • the absorbent body 11 is bent along the first groove 121 into a mountain shape protruding toward the wearer's skin, so that the absorbent body 11 is appropriately deformed according to the wearer's body shape. Can be made.
  • the first groove 121 is formed by embossing from the non-skin side in the thickness direction of the absorber 11 (see the PP cross section in FIG. 6A), and the absorber 11 is in the thickness direction.
  • the 1st groove part 121 may not be formed as a pressing part by which the absorber 11 was compressed, but may be formed as a slit. Moreover, it may not be formed in a continuous line shape as shown in FIG. 5, but may be formed by arranging a plurality of squeezed portions or other shaped compressed portions along the longitudinal direction.
  • a plurality of second groove portions 122 are formed so as to cross a straight line passing through the center of the first groove portion 121 in the width direction and extending along the longitudinal direction. That is, the first groove 121 is provided along the longitudinal direction, while the second groove 122 is provided so as to have a component in the width direction.
  • two second groove portions 122A and 122B are provided in order from the front side in the longitudinal direction, and each groove portion 122A and 122B spreads outward in the width direction toward the rear side (back side) in the longitudinal direction. It is arrange
  • the second groove 122A provided on the front side in the longitudinal direction intersects with the first groove 121, and the second groove 122B provided on the rear side in the longitudinal direction is separated from the first groove 121.
  • three or more second groove portions 122 may be formed.
  • the region where the second groove portion 122 is provided is a region where the wearer's body is in contact with a portion of the wearer's body on the dorsal side of the hip that is above the heel bone (crack) and around the tailbone. In the following, this area is also referred to as a back area.
  • These 2nd groove parts 122 are formed by predetermined pressing means, such as embossing, from the non-skin side of the thickness direction of absorber 11 like the 1st groove part 121.
  • the 2nd groove part 122 may be squeezed and formed from the skin side of a thickness direction.
  • the 2nd groove part 122 does not need to be provided with the function as a bending induction
  • the fiber density of the absorbent body 11 in the second groove part 122 may be lower than the fiber density of the absorbent body 11 in the first groove part 121 (density of the compressed part). If such a density difference is provided between the first groove 121 and the second groove 122, the absorber 11 is more easily bent than the second groove 122 at the first groove 121 having a high density. Thereby, the absorber 11 is easily deformed into a mountain shape along the first groove 121.
  • the third groove portion 123 is formed in a plurality so as to intersect the first groove portion 121 on the front side in the longitudinal direction from the second groove portion 122A.
  • three third groove portions 123A, 123B, and 123C are provided in order from the front side in the longitudinal direction, and each of the groove portions 123A, 123B, and 123C is directed outward in the width direction toward the front side (abdomen side) in the longitudinal direction.
  • the outer end in the width direction reaches the constricted portion 11n.
  • the region where the third groove 123 is provided is a region extending from the groove (crack) of the wearer's buttocks to the base of the leg when the diaper 1 is worn.
  • the third groove 123 is formed in substantially the same manner as the second groove 122.
  • FIG. 6A shows the absorbent body 11 in a planar state before the diaper 1 is worn.
  • a region in which the first groove 121 is formed in the longitudinal direction is a central region, and a rear side in the longitudinal direction with respect to the central region is a back region. Further, the front side in the longitudinal direction with respect to the central region is defined as a ventral region.
  • the absorbent body 11 Before the diaper 1 is worn, the absorbent body 11 has a planar shape as shown in FIG. 6A. Therefore, the shape as it is is difficult to fit a human body having complicated irregularities.
  • FIG. 6B shows a state where the absorbent body 11 is deformed when the diaper 1 is worn.
  • the center region of the absorbent body 11 is sandwiched between both legs of the wearer (inguinal region), and thus a force that compresses the absorbent body 11 in the width direction acts. Due to this compressive force, the central region of the absorbent body 11 is bent in the thickness direction along the first groove 121, and deformed into a mountain shape protruding toward the skin as shown in the QQ cross section of FIG. 6B.
  • the central region By deforming the central region into a mountain shape, the bent portion of the mountain shape can easily come into contact with the groove of the wearer's buttocks. Thereby, a good fit can be produced in the central region.
  • the wearer's body is substantially planar in the dorsal region, the fit is deteriorated when the absorbent body 11 is deformed into a mountain shape like the central region.
  • the 2nd groove part 122 by providing the 2nd groove part 122, it suppresses that the absorber 11 deform
  • the first groove 121 intersects the second groove 122A at the rear end 121er in the longitudinal direction, the force for deforming the absorber 11 into a mountain shape is changed from the first groove 121 to the second groove. It propagates to 122A and is transmitted to the outside in the width direction along the second groove 122A.
  • this force acts so as to widen the back side region of the absorber 11 to the outside in the width direction, the back side region is easily maintained in a planar shape. That is, the deformation of the absorber 11 is controlled between the central region and the back region by changing the direction of the force that deforms the absorber 11 into a mountain shape by the second groove 122A that intersects the first groove 121. It is easy.
  • a second groove portion 122B is provided in a region on the rear side in the longitudinal direction of the second groove portion 122A. Since the second groove portion 122B is provided at a position separated from the first groove portion 121 by a predetermined distance, a force that deforms the absorber 11 into a mountain shape is difficult to act, and the force is temporarily less than the second groove portion 122A. Even if it is transmitted to the position of the second groove portion 122B on the rear side in the longitudinal direction, the second groove portion 122B provided so as to intersect with the longitudinal direction prevents the absorber 11 from being deformed into a mountain shape.
  • the foremost second groove portion 122A intersects the first groove portion 121
  • the rearmost second groove portion 122B is the first groove portion 121.
  • the back side region of the absorbent body 11 is a region that is easily subjected to a large force from the wearer's buttocks in a state where the diaper 1 is worn
  • the first groove portion 121 and the second groove portion 122 are provided so that the absorbent body 11 is appropriately By making it deform
  • the “planar shape” described above does not mean a completely flat surface, but also includes a curved surface having a curve along the shape of the body.
  • FIG. 7 is a schematic plan view of the diaper 1 having a pants shape when viewed from the rear side (back side).
  • the absorbent main body 10 When the diaper 1 is worn, the absorbent main body 10 is pulled outward in the width direction by the elastic belt portion 30. At this time, the tensile force by the belt part 30 acts on the absorptive main body 10 through the second joint part WL2 on the back side. That is, as shown in FIG. 7, the absorbent main body 10 is pulled in a direction intersecting (orthogonal) with the second joint portion WL2.
  • the second groove portions 122 ⁇ / b> A and 122 ⁇ / b> B are formed in a substantially parabolic shape extending outward in the width direction toward the rear side in the longitudinal direction (the upper side in the vertical direction in FIG. 7).
  • the second junction WL2 are arranged so as to be substantially orthogonal to each other.
  • the smaller angles ⁇ A and ⁇ B are within a predetermined range among the angles formed by the second joining portion WL2 and the extension line extending the second groove portions 122A and 122B to the rear side in the longitudinal direction and the outside in the width direction.
  • the second groove portion 122 is disposed so as to be (for example, 70 ° or more, desirably 90 °). In this way, the pulling force acting on the second bonding portion WL2 and the direction in which the second groove portions 122A and 122B are arranged are easily aligned, and the force pulling the absorbent main body 10 outward in the width direction is the second.
  • the absorber 11 can be efficiently acted on via the groove 122, and the absorber 11 is easily widened in the width direction. Accordingly, when the absorbent body 11 is deformed along the wearer's body, the entire dorsal region is easily maintained in a substantially flat shape, and the fit on the wearer's back side can be improved.
  • third groove portions 123A to 123C are formed on the rear side in the longitudinal direction of the central region.
  • This region is a region that deforms along the roundness of the wearer's buttocks when the diaper 1 is worn, and since complex forces act, wrinkles occur on the surface, or the entire region contracts and the wearer's buttocks There is a risk of worsening the fit by biting into.
  • the diaper 1 since the third groove portions 123A to 123C are provided from the first groove portion 121 to the constricted portion 11n of the absorber 11, the surface shape of the region is easily maintained. .
  • the third groove parts 123A to 123C are formed in a substantially parabolic shape extending outward in the width direction toward the front side (belly side) in the longitudinal direction, and the absorber 11 is deformed into a curved shape along the parabola. Since it becomes easy, favorable fitting property can be realized with respect to the roundness of the wearer's buttocks.
  • the front end 121ef in the longitudinal direction of the first groove 121 is provided between the position 11nf of the front end of the constricted portion 11n of the absorber 11 and the position MN of the narrowest portion. It has been.
  • the position at which the front end 121ef is provided is a position in contact with the vicinity of the front end of the wearer's groin, and the absorbent body 11 is worn in the region on the front side in the longitudinal direction from the front end 121ef. Since there are few portions sandwiched between the legs of the person, the force that deforms the absorber 11 into a mountain shape is small.
  • the diaper 1 when the diaper 1 is worn, a complicated force is less likely to act on the ventral side compared to the dorsal side (buttock), so that problems such as wrinkles occurring in the absorbent body 11 and biting into the abdomen are unlikely to occur. Therefore, by disposing the front end portion of the first groove portion 121 between the position 11nf of the front end portion of the constricted portion 11n and the position MN of the narrowest portion, there is no need to provide a groove portion corresponding to the first groove portion 121. In the ventral region, the absorbent body 11 can maintain a flat shape (curved surface along the abdomen of the body).
  • the three-dimensional shape of the absorber is easily adapted to the shape of the human body, A good fit can be given to the wearer.
  • the looseness of the absorbent body 11 when worn is suppressed, so that the appearance of the diaper 1 can be reduced to shorts or briefs. It can be as clean as underwear.
  • FIG. 8 is a plan view illustrating a developed state of a three-piece type disposable diaper (diaper 2) as an example of an absorbent article.
  • FIG. 9 is a plan view showing a sanitary napkin (napkin 3) as an example of an absorbent article.
  • the diaper 2 shown in FIG. 8 is a so-called three-piece type, and has three parts 10, 30a, 30b. That is, as a first part, it has an absorbent main body 10 (main body part) provided with an absorber 11, and as a second part, it has a stretchable abdominal belt part 30a that covers the wearer's abdominal side part, As a third part, it has a stretchable back side belt part 30b covering the back side part of the wearer.
  • the abdominal belt portion 30a and the back belt portion 30b are arranged in parallel with a space therebetween in the vertical direction, and the absorbent main body 10 is being stretched between them.
  • the longitudinal end portions 10ef and 10er of the absorbent main body 10 are joined and fixed to the nearest abdominal belt portion 30a and back belt portion 30b, respectively, and the external shape is substantially H-shaped in plan view. Yes. And from this state, the absorptive main body 10 is folded in half with the central position CL in the longitudinal direction as the folding position.
  • An abdominal belt side edge 30ae and a back belt side edge which are portions where the abdomen belt part 30a and the back belt part 30b opposed to each other in this folded state should contact the wearer's flank
  • the belt portions 30a and 30b are formed in an annular shape. Thereby, it becomes the diaper 2 of the wearing condition in which the trunk periphery opening 1HB and a pair of leg periphery opening 1HL were formed.
  • the napkin 3 shown in FIG. 9 has the absorber 11, the surface layer 16 which covers the absorber 11 from a wearer's skin side, and the back surface layer 17 which covers the absorber 11 from a wearer's non-skin side. And it forms by joining the periphery (shaded part of FIG. 9) of the surface layer 16 and the back surface layer 17 in the state which inserted
  • the napkin 3 may be a so-called vaginal sheet (for example, panty liner) or the like, and is not limited to a sanitary napkin.
  • the surface layer 16 is a liquid-permeable sheet member that allows liquid such as body fluid to pass through, and is formed of, for example, a nonwoven fabric.
  • the material is not particularly limited as long as it is a sheet member having a structure that allows liquid to pass therethrough and is a safe member that comes into contact with the user's skin when the napkin 10 is used.
  • a woven fabric or a mesh sheet may be used.
  • the surface layer 16 is larger than the absorber 11 in the vertical direction and the width direction, and can cover the entire region of the absorber 11.
  • the back layer 17 is a non-liquid permeable sheet member, for example, a breathable resin film joined to a non-woven fabric such as a film mainly made of polyethylene or propylene, a breathable resin film, spunbond, or spunlace. Formed by a sheet. Since the back surface layer 17 is non-liquid permeable, the liquid that permeates the surface layer 16 and is absorbed by the absorber 11 when the napkin 3 is used oozes out to the clothing side (non-skin side) such as underwear. It is suppressed.
  • the back surface layer 17 has substantially the same shape as the surface layer 16 and desirably has such flexibility that does not cause the user to feel uncomfortable when the napkin 10 is used.
  • the first groove 121 is formed at the center position in the width direction of the absorbent body 11, but this is not a limitation. That is, the folded first groove 121 may be formed at a position slightly shifted in the width direction from the center position. However, since the absorbent article such as the diaper 1 and the napkin 3 is basically designed symmetrically with respect to the center position in the width direction, the folded first groove 121 is preferably formed at the center position in the width direction. .
  • 1 diapers (absorbent articles, disposable diapers), 2 diapers (absorbent articles, 3-piece disposable diapers), 3 napkins (absorbent articles, sanitary napkins), 10 Absorbent body, 10A Absorbent body continuous sheet, 10ef front end, 10er rear end, 11 Absorber, 11n Constriction, 11nf Front end position, 12 groove, 121 first groove, 121ef front end, 121er rear end, 122 second groove, 122A / 122B second groove, 123 third groove, 123A, 123B, 123C third groove, 13 Top sheet, 15 Back sheet, 15f Leak-proof sheet, 15n exterior sheet, 16 surface layer, 17 back layer, 20 leg gather part, 20A leg gather continuous sheet, 20e Albany widthwise outer edge, 21 first sheet, 22 second sheet, 23 leg gather elastic member, 25 Leg gather cutout, 30 belt part, 30A belt continuous sheet, 30a ventral belt part, 30ae ventral belt side edge, 30b back side belt part, 30ab back side belt side

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

La présente invention concerne un article absorbant muni d'un corps absorbant absorbant les liquides (11) et présentant un sens longitudinal, un sens transversal, et un sens d'épaisseur qui sont orthogonaux l'un par rapport à l'autre, ledit corps absorbant (11) comprenant : une première section rainure (121) qui est formée le long du sens longitudinal, et amène le corps absorbant (11) à se courber dans le sens de l'épaisseur ; et une pluralité de secondes sections rainure (122) qui sont alignées dans le sens longitudinal, et formées de manière à traverser le centre dans le sens transversal de la première section rainure (121) et croisent une ligne droite le long du sens longitudinal. Le corps absorbant (11) dans un étant aplati, la seconde section rainure (122) disposée le plus en arrière dans le sens longitudinal parmi la pluralité de secondes sections rainure (122) est séparée de la section extrémité arrière de la première section rainure (121) dans le sens longitudinal.
PCT/JP2016/061660 2015-06-24 2016-04-11 Article absorbant WO2016208255A1 (fr)

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JP2015-126654 2015-06-24

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JP6942499B2 (ja) * 2017-03-24 2021-09-29 大王製紙株式会社 パンツタイプ使い捨ておむつ
JP6844413B2 (ja) * 2017-05-17 2021-03-17 王子ホールディングス株式会社 吸収性物品およびその製造装置
JP2020036735A (ja) * 2018-09-04 2020-03-12 花王株式会社 吸収性物品
CN114732598B (zh) * 2021-07-30 2023-11-03 尤妮佳股份有限公司 短裤型吸收性物品

Citations (5)

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Publication number Priority date Publication date Assignee Title
JPH08507699A (ja) * 1992-10-27 1996-08-20 プロクター・アンド・ギャンブル・ファー・イースト・インク ウエスト開口部全体を伸縮自在とした使い捨ておむつ
JPH09290003A (ja) * 1996-02-26 1997-11-11 Hakujiyuuji Kk 使い捨ておむつ
JP2014193210A (ja) * 2013-03-28 2014-10-09 Daio Paper Corp 使い捨ておむつ
JP2015047432A (ja) * 2013-09-04 2015-03-16 大王製紙株式会社 吸収性物品
JP2015112268A (ja) * 2013-12-11 2015-06-22 花王株式会社 吸収性物品

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Publication number Priority date Publication date Assignee Title
KR100240245B1 (ko) * 1992-10-27 2000-01-15 린다 디. 로러 충분히 탄성화된 허리 개구부를 갖는 일회용 기저귀
JP5997944B2 (ja) * 2012-06-11 2016-09-28 花王株式会社 吸収性物品
CN104546300A (zh) * 2013-10-28 2015-04-29 徐菘辰 任督脉穴位物理理疗纯植物卫生巾

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08507699A (ja) * 1992-10-27 1996-08-20 プロクター・アンド・ギャンブル・ファー・イースト・インク ウエスト開口部全体を伸縮自在とした使い捨ておむつ
JPH09290003A (ja) * 1996-02-26 1997-11-11 Hakujiyuuji Kk 使い捨ておむつ
JP2014193210A (ja) * 2013-03-28 2014-10-09 Daio Paper Corp 使い捨ておむつ
JP2015047432A (ja) * 2013-09-04 2015-03-16 大王製紙株式会社 吸収性物品
JP2015112268A (ja) * 2013-12-11 2015-06-22 花王株式会社 吸収性物品

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CN107847376A (zh) 2018-03-27

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