WO2014208780A2 - 吸収性物品 - Google Patents

吸収性物品 Download PDF

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Publication number
WO2014208780A2
WO2014208780A2 PCT/JP2014/075862 JP2014075862W WO2014208780A2 WO 2014208780 A2 WO2014208780 A2 WO 2014208780A2 JP 2014075862 W JP2014075862 W JP 2014075862W WO 2014208780 A2 WO2014208780 A2 WO 2014208780A2
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WO
WIPO (PCT)
Prior art keywords
elastic member
absorbent
leg
ventral
lateral direction
Prior art date
Application number
PCT/JP2014/075862
Other languages
English (en)
French (fr)
Japanese (ja)
Other versions
WO2014208780A3 (ja
Inventor
京太 齋藤
サリニー フィチェットキットジャワット
ナッタカーン ブンロッド
ジラパ チャンチャルーン
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.)
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Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=52142787&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2014208780(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
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 CN201480054454.5A priority Critical patent/CN105636564B/zh
Publication of WO2014208780A2 publication Critical patent/WO2014208780A2/ja
Publication of WO2014208780A3 publication Critical patent/WO2014208780A3/ja

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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
    • A61F13/49058—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by the modular concept of constructing the diaper
    • A61F13/4906—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by the modular concept of constructing the diaper the diaper having an outer chassis forming the diaper and an independent absorbent structure attached to the chassis
    • A61F13/49061—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by the modular concept of constructing the diaper the diaper having an outer chassis forming the diaper and an independent absorbent structure attached to the chassis the diaper having one or two waist members forming the diaper waist region and an independent absorbent structure attached to the one or two waist members forming the crotch 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
    • 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
    • A61F13/49012—Form-fitting, self-adjusting disposable diapers with elastic means the elastic means is located at the waist region the elastic means being elastic panels

Definitions

  • the present invention relates to an absorbent article.
  • a three-piece type disposable diaper is known as an absorbent article that absorbs excrement.
  • a three-piece type disposable diaper generally, an absorbent main body that is applied to the crotch of the wearer to absorb excrement, a ventral belt member that covers the wearer's ventral side, and a back side of the wearer is covered. And a backside belt member.
  • a technique for promoting and assisting the deformation of the absorbent main body by providing an elastic member such as rubber thread at the side edge (position around the leg when worn) of the absorbent main body. is there.
  • Patent Document 1 discloses a technique for improving the fit when a diaper is worn by an elastic member provided on a side edge of an absorbent main body and an elastic member provided on a ventral belt member and a back belt member. It is disclosed.
  • the elastic member provided around the wearer's leg improves the fit of the absorbent main body around the wearer's leg, and excrement from the absorbent main body. Leakage can be suppressed.
  • the elastic member is not provided around the wearer's buttocks, there is a possibility that the position of the absorbent main body and the back band member that has wrapped the buttocks may be shifted when the wearer moves the body. . In other words, the fit on the heel side may be insufficient, and the disposable diaper may be turned up on the heel side.
  • This invention is made
  • the place made into the objective is to provide the three-piece type disposable diaper which has sufficient fit in a wearer's buttocks side. .
  • the main invention to achieve the above objective is
  • An absorbent article having a longitudinal direction and a transverse direction intersecting with the longitudinal direction, the absorbent article being provided along the longitudinal direction and absorbing excrement, and provided along the transverse direction
  • a ventral belt member in which the central portion in the lateral direction is fixed to the one end while covering the longitudinal end of the absorbent main body from the non-skin side of the absorbent main body, and the ventral belt member Provided along the lateral direction as a separate member, the central portion in the lateral direction is fixed to the other end while covering the other end in the longitudinal direction of the absorbent main body from the non-skin side of the absorbent main body.
  • a back band member, and the absorbent main body has an absorbent core formed by laminating a liquid absorbent material, and a liquid impervious covering the absorbent core from the non-skin side of the absorbent core.
  • the back-side belt member is disposed along the longitudinal direction, and the back-side belt member is disposed along the lateral direction with the back-side belt elastic member intersecting with a part of the leg-around elastic member.
  • FIG. 4A is a cross-sectional view taken along line AA and CC in FIG. 2
  • FIG. 4B is a cross-sectional view taken along line BB in FIG. It is a figure explaining the relationship between the absorptive main body 10, the ventral
  • An absorbent article having a longitudinal direction and a transverse direction intersecting with the longitudinal direction, the absorbent article being provided along the longitudinal direction and absorbing excrement, and provided along the transverse direction
  • a ventral belt member in which the central portion in the lateral direction is fixed to the one end while covering the longitudinal end of the absorbent main body from the non-skin side of the absorbent main body, and the ventral belt member Provided along the lateral direction as a separate member, the central portion in the lateral direction is fixed to the other end while covering the other end in the longitudinal direction of the absorbent main body from the non-skin side of the absorbent main body.
  • a back band member, and the absorbent main body has an absorbent core formed by laminating a liquid absorbent material, and a liquid impervious covering the absorbent core from the non-skin side of the absorbent core.
  • the back-side belt member is disposed along the longitudinal direction, and the back-side belt member is disposed along the lateral direction with the back-side belt elastic member intersecting with a part of the leg-around elastic member.
  • the longitudinal direction of the region where the ventral belt elastic member intersecting with a part of the surrounding elastic member is disposed along the lateral direction, and the stretched portion of the leg elastic member and the back belt elastic member intersect Is longer than the length in the longitudinal direction of the region where the stretched portion of the elastic member around the leg and the ventral belt elastic member intersect.
  • the back band elastic member that intersects with a part of the leg elastic member is continuously arranged from one end to the other end of the back band member in the lateral direction. It is desirable.
  • the lateral expansion and contraction force by the back band elastic member acts on the center part of the back band member, so that the entire back band member is pressed against the wearer's buttocks, Fit property can be improved.
  • the force by which the absorbent main body is pulled outward in the lateral direction (width direction) is increased by the elastic force of the back band elastic member, the absorbent main body is less likely to shift on the buttocks side of the wearer.
  • the back band elastic member that intersects a part of the leg elastic member is at least discontinuous from one end to the other end of the back band member in the lateral direction.
  • the ventral belt elastic member that has a portion and intersects with a part of the elastic member around the leg has a portion that is at least discontinuous from one end portion to the other end portion of the ventral belt member in the lateral direction. Is desirable.
  • the length in the lateral direction of the portion where the stretched portion of the back band elastic member overlaps the absorbent core is the portion of the ventral band elastic member in the stretched state. It is desirable that the length of the portion where the absorbent core and the absorbent core overlap is longer than the lateral length.
  • the length in the longitudinal direction of the stretched portion of the elastic member around the leg is longer than the length in the vertical direction of the absorbent core.
  • One end side in the longitudinal direction of the part in the stretched state is on the outer side in the longitudinal direction than the ventral side end part of the absorbent core, and the other end side in the longitudinal direction of the part in the stretched state of the elastic members around the legs is It is desirable that the absorbent core is disposed on the outer side in the longitudinal direction than the back end portion of the absorbent core.
  • the absorbent main body is moved outward in the lateral direction (width direction) by the back band elastic member (abdominal band elastic member). The effect of being pulled can be increased.
  • the elastic member around the leg when the elastic member around the leg is attached to the absorbent main body, the elastic member around the dorsal side is used as the abdominal belt member rather than the ratio of extending the elastic member around the leg in the longitudinal direction. It is desirable that the ratio of extending the dorsal belt elastic member in the lateral direction is larger when pasting.
  • FIG. 1 is a schematic perspective view of a three-piece type disposable diaper (diaper 1) as an example of the absorbent article of the present embodiment.
  • FIG. 2 is a schematic plan view of the unfolded diaper 1 as seen from the skin side.
  • FIG. 3 is a schematic plan view of the diaper 1 viewed from the non-skin side.
  • 4A is a cross-sectional view taken along line AA and CC in FIG. 2
  • FIG. 4B is a cross-sectional view taken along line BB in FIG.
  • the diaper 1 has a vertical direction, a horizontal direction, and a thickness direction as three directions orthogonal to each other. Moreover, since the diaper 1 is a so-called three-piece type, it has three parts 10, 30a, 30b. 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 abdomen part of the wearer as the second part. It has an abdominal band member 30a that covers it, and a back band member 30b that covers the back side of the wearer as a third part. In the deployed state of FIG.
  • the ventral band member 30 a (vertical upper side in the figure) and the back side band member 30 b (vertical lower side in the figure) are arranged in parallel with an interval in the vertical direction. While the absorbent main body 10 is stretched between them, the end portions 10ea and 10eb in the longitudinal direction of the absorbent main body 10 are joined and fixed to the nearest belt members 30a and 30b, respectively, and the external shape is flat. Visually H-shaped. And from this state, the absorptive main body 10 is folded in half with the substantially central portion C10 in the longitudinal direction as a folding position.
  • the abdominal band member side edge 30ae, the back side band member side edge 30be, and the abdominal band member side edge 30be which are portions where the abdominal band member 30a and the back side band member 30b facing each other in this folded state
  • the band members 30a and 30b are formed in an annular shape. Thereby, it becomes the diaper 1 of the wearing condition in which the trunk periphery opening 1HB and a pair of leg periphery opening 1HL as shown in FIG. 1 were formed.
  • connection structures are employable as a connection structure that connects the above-described ventral band member side edge 30ae and the back band member side edge 30be.
  • a connection structure such as welding
  • a detachable connection structure such as a fastening tape member (not shown)
  • an open-type diaper is used.
  • the former connection structure is used, and thereby the diaper 1 of the present embodiment is a pants type.
  • the longitudinal direction, the lateral direction, and the thickness direction of the diaper 1 are simply referred to as “vertical direction”, “lateral direction”, and “thickness direction”, respectively.
  • the side in contact with the wearer is also referred to as “skin side”, and the opposite side is also referred to as “non-skin side”.
  • the “lateral direction” of the diaper 1 can be said to be the “width direction” of the absorbent main body 10 in the diaper shape as shown in FIG. 1, the “lateral direction” is also referred to as the “width direction” in the following description. Sometimes called.
  • the absorbent main body 10 includes an absorbent core 11, a surface sheet member 13 that covers the absorbent core 11 from the skin side of the core 11, and the absorbent core 11 of the core 11. And a back sheet member 15 that covers the non-skin side and forms the exterior of the absorbent main body 10.
  • the absorbent core 11 is a member formed by laminating liquid absorbent materials, and can absorb excrement such as urine.
  • liquid absorbent material for example, liquid absorbent fibers such as pulp fibers can be used.
  • the absorptive core 11 may contain, for example, a superabsorbent polymer as a liquid absorptive granule, or contains a liquid absorptive material other than a liquid absorptive fiber and a liquid absorptive granule. Also good.
  • the absorptive core 11 may be coat
  • the absorptive core 11 of the present embodiment has a ventral end 11a which is an upper end in the vertical direction in FIG. 2 and a back end 11b which is a lower end in the vertical direction in FIG. And between the abdominal side edge part 11a and the back side edge part 11b, it has the constriction part 11c whose width
  • the absorptive core 11 is comprised so that it may become a substantially hourglass shape in planar view as shown in FIG.
  • the surface sheet member 13 is a sheet-like member that covers the absorbent core 11 from the skin side, and is, for example, a liquid-permeable nonwoven fabric having a larger planar size than the absorbent core 11 (see FIG. 4B).
  • the back sheet member 15 is a sheet-like member that covers the absorbent core 11 from the non-skin side, and is a planar sheet that is larger than the absorbent core 11, and an example thereof is liquid such as polyethylene or polypropylene.
  • a sheet having a two-layer structure in which a permeable leak-proof sheet 15a and an exterior sheet 15b such as a nonwoven fabric are bonded to each other can be used.
  • the leak-proof sheet 15a of the back surface sheet member 15 and The top sheet member 13 is bonded together in a frame shape, whereby the absorbent main body 10 is generally formed.
  • the exterior sheet 15b In the diaper 1, as shown in FIGS. 1, 2, and 4B, so-called three-dimensional gathers LSG and leg gathers LG are formed by the exterior sheet 15b.
  • the three-dimensional gather LSG is a leak-proof wall portion provided upright at each lateral end portion of the top sheet member 13, while the leg gathers LG are formed in the leg-openings 1 HL and 1 HL of the diaper 1. It is a leg-around elastic part to be formed.
  • the exterior sheet 15b will be described in detail. First, as shown in FIG. 4B, the lateral dimension of the exterior sheet 15b is made sufficiently larger than the leak-proof sheet 15a. That is, the exterior sheet 15b is made of the leak-proof sheet 15a. It protrudes laterally from both lateral sides.
  • the protruding portion 15bf is folded back to the lateral center with the position forming the lateral end 10es of the absorbent body 10 being the folded position, and the rubber thread along the longitudinal direction in the vicinity of the folded position.
  • the leg-surrounding elastic member 17 and the leg-surrounding elastic member 19 such as the leg-surrounding elastic member 19 are fixed in a state of being stretched in the vertical direction, thereby forming the leg-surrounding gather LG.
  • assistant elastic member 19 is not necessarily required, and the leg periphery gathers LG may be formed only by the leg periphery elastic member 17.
  • the folded portion 15bg further extends toward the center in the lateral direction, and is joined to the end portion at a position covering the lateral end portion of the top sheet member 13.
  • the part joined to this end part functions as the base end part LSGb of the three-dimensional gather LSG, that is, the part on the tip side in the lateral direction further than the base end part LSGb serves as the free end part LSGf. 13 can stand up.
  • an LSG elastic member 18 such as a thread rubber is fixed to the distal end portion of the free end portion LSGf in a state of being extended in the vertical direction along the vertical direction.
  • the absorbent main body 10 is bent in the vertical direction so that the surface sheet member 13 side becomes the inner peripheral side.
  • the free end portion LSGf contracts in the vertical direction and rises from the top sheet member 13 due to the contraction force, whereby the free end portion LSGf functions as a three-dimensional gather LSG.
  • liquid permeation of tissue paper or the like as a second sheet may be provided between the top sheet member 13 and the absorbent core 11 or between the back sheet member 15 and the absorbent core 11.
  • a sex sheet may be interposed.
  • the ventral band member 30a and the dorsal band member 30b are both sheet members having a substantially rectangular shape in plan view made of a flexible sheet such as a nonwoven fabric.
  • dorsal band member 30b are formed by joining the nonwoven fabrics 31 and 32 in two sheets.
  • the ventral belt member 30a and the back belt member 30b are respectively centered in the lateral direction 30ac and 30bc while covering the longitudinal ends 10ea and 10eb of the absorbent main body 10 from the non-skin side of the absorbent main body 10.
  • the central portions 30ac and 30bc of the band members 30a and 30b are overlapped and joined to the end portions 10ea and 10eb.
  • the two nonwoven fabrics 31 and 32 do not have to be the same size.
  • the superposition of the absorbent main body 10 on the central portion 30ac of the ventral side band member 30a and the central portion 30bc of the back side band member 30b is the vertical end portion 30ae2 of the ventral side band member 30a and the vertical end portion of the back side band member 30b.
  • the absorbent main body 10 is not overlapped with 30be2, but the absorbent main body 10 is overlapped with the central portions 30ac2 and 30bc2 in the vertical direction with respect to the end portions 30ae2 and 30be2 (see FIG. 2).
  • the longitudinal end portions 30ae2 and 30be2 of the ventral belt member 30a and the back belt member 30b are formed as portions 30ae2 and 30be2 where the absorbent main body 10 does not overlap at all over the entire length in the lateral direction.
  • the non-overlapping portions 30ae2 and 30be2 are portions that constitute the waist opening 1HB (FIG. 1) of the diaper 1. Therefore, the elastic members 35 described later are provided in the portions 30ae2 and 30be2 in the portions 30ae2 and 30be2. It is provided continuously over substantially the entire length in the lateral direction.
  • a plurality of elastic members 35 such as thread rubber along the lateral direction are provided between the two nonwoven fabrics 31 and 32 related to the band members 30a and 30b. 35 ... are inserted and fixed to the nonwoven fabrics 31 and 32 in a state of being stretched in the lateral direction while being inserted, thereby giving the ventral belt member 30a and the back belt member 30b lateral stretchability, respectively.
  • the plurality of elastic members 35, 35... Are provided side by side in the vertical direction with an interval in the vertical direction.
  • the elastic member 35 provided on the ventral band member 30a is referred to as the ventral band elastic member 35a
  • the elastic member 35 provided on the back side band member 30b is referred to as the dorsal band elastic member 35b.
  • the basic structure of the elastic member 35 is substantially the same except for detailed specifications such as thickness, number, and vertical arrangement position. Therefore, below, the abdominal band elastic member 35a provided in the abdominal band member 30a will be described, and the description of the back side band elastic member 35b provided in the back side band member 30b may be omitted. This also applies to all configurations related to the back band member 30b.
  • the ventral belt member 30a is divided into two regions AU, AD in the vertical direction, and the two regions AU, AD arranged in the vertical direction.
  • regions AU and AD are both strip-shaped regions along the horizontal direction.
  • the upper region AU is a portion constituting the waist opening 1HB of the diaper 1, and the region AU is a region in which the absorbent main body 10 (absorbent core 11) is not overlapped at all over the entire length in the lateral direction. It is. And, in the upper region AU, while the ventral band elastic member 35a (back side band elastic member 35b) is continuously arranged over substantially the entire length from one end to the other end in the lateral direction in the region AU, It is fixed in a stretched state in the lateral direction. Therefore, the upper region AU is given lateral stretchability over substantially the entire length in the lateral direction based on the ventral belt elastic member 35a, and this stretchability is the stretchability of the waistline opening 1HB of the diaper 1. It becomes.
  • the lower region AD is a region where the portion 10p of the absorbent main body 10 where the absorbent core 11 is present is overlapped and fixed to the lateral central portion ADc. In the lower region AD, the absorbent main body 10 is not superimposed on the portions ADe and ADe located on both sides of the central portion ADc.
  • the elastic member 35 is continuously extended over substantially the entire length from one end portion to the other end portion in the lateral direction of the portion ADe, and extends downward in the lateral direction. It is fixed with. Thereby, the stretchability in the lateral direction is given to each of the portions ADe, ADe over substantially the entire length in the lateral direction.
  • the elastic member 35 is discontinuously arranged in the lateral direction in the central portion ADc. Specifically, in this example, the end portions of the elastic member 35 are located at both end portions ADce, ADce in the lateral direction of the central portion ADc. The elastic member 35 is not present in the central portion ADcc. Therefore, in the central portion ADc, the elastic member 35 is disposed discontinuously in the lateral direction.
  • the elastic member 35 is not present in the central portion ADcc of the central portion ADc as described above, the central portion ADcc is hardly provided with stretchability, and thus the lateral contraction of the central portion ADcc is suppressed. Is done.
  • the lateral length Wa of the portion where the ventral band elastic member 35a is arranged in the both ends ADce in the lateral direction of the ventral band member 30a is equal to the both ends ADce in the lateral direction of the dorsal band member 30b. It is longer than the lateral length Wb of the portion where the back band elastic member 35b is disposed.
  • the lateral length of the portion of the ventral band elastic member 35a where the stretchable portion overlaps the absorbent core 11 is the same as the portion of the dorsal band elastic member 35b where the stretchable force overlaps the absorbent core 11. Longer than the lateral length of The effect of such an arrangement will be described with reference to FIG.
  • an illustration sheet 40 on which an illustration (not shown) such as an animal is formed is provided in the central portion ADc of the lower region AD. For the same reason as above, this illustration is provided. Generation of wrinkles of the sheet 40 is also suppressed. Therefore, the illustration becomes easy to see.
  • a post-processing tape 50 is provided on the non-skin side surface of the back band member 30b.
  • the post-processing tape 50 is an elongated tape-like member having an adhesive surface, and is fixed to the back band member 30b in a folded state with the adhesive surface inside.
  • the diaper 1 is rolled up by extending the folded post-treatment tape 50 and winding the adhesive side of the diaper 1 around the diaper 1. It can be kept in the state. Thereby, the diaper 1 can be discarded, without letting the excretion etc. which adhered to the inside (absorbent main body 10) of the diaper 1 leak outside.
  • FIG. 5 is a diagram for explaining the relationship between the absorbent main body 10, the ventral band member 30a, and the dorsal band member 30b in the present embodiment.
  • FIG. 6 is a diagram for explaining the relationship between the absorbent main body 10 and the ventral band member 30a and the dorsal band member 30b in the comparative example.
  • ventral side band elastic members 35 a (back side band elastic members 35 b) are provided in ADe located on both lateral sides of the lower region AD of the ventral side band member 30 a (back side band member 30 b). It is arranged along the horizontal direction.
  • the ventral belt elastic member 35a (backside belt elastic member 35b) is provided with the leg-around elastic member 17 and the legs provided in the region ADe in a state of being extended in the vertical direction at both lateral (widthwise) ends of the absorbent main body 10. It arrange
  • the length in the vertical direction of a region where the ventral belt elastic member 35a intersects with the leg-hole elastic member 17 and the leg-hole auxiliary elastic member 19 is defined as La.
  • the length in the vertical direction of the region where the back band elastic member 35b intersects with the leg elastic member 17 and the leg auxiliary elastic member 19 is defined as Lb.
  • the leg elastic member 17 and the leg auxiliary elastic member 19 cause a force to contract the absorbent main body 10 in the vertical direction, and the ventral belt elastic member 35a (dorsal belt elastic).
  • the member 35b) exerts a force that pulls the absorbent body 10 in the lateral direction (width direction). That is, the force which makes the absorptive main body 10 (absorbent core 11) contact
  • leg-surrounding elastic member 17 and the leg-surrounding auxiliary elastic member 19 are not disposed in the stretched state over the entire longitudinal region of the absorbent main body 10, but in the stretched state in a predetermined region in the longitudinal direction. Has been placed. In the region where the elastic member is arranged in the stretched state, a force that contracts in the longitudinal direction acts on the absorbent main body 10, and in the region where the elastic member is not arranged in the stretched state, it is vertical with respect to the absorbent main body 10. The force that contracts in the direction does not work.
  • the length in the vertical direction of the region where the force contracting in the vertical direction works is also referred to as “effective length” of the leg-hole elastic member 17 and the leg-hole auxiliary elastic member 19. 5 and 6 correspond to the effective lengths of the leg-hole elastic member 17 and the leg-hole auxiliary elastic member 19.
  • the effective length of the leg-hole elastic member 17 is at least longer than the length of the absorbent core 11 in the vertical direction.
  • the leg core is elastic so that one end side in the longitudinal direction of the absorbent core 11 is outside in the longitudinal direction from the ventral end portion 11a and the other end side in the longitudinal direction is outside in the longitudinal direction from the back side end portion 11b.
  • a member 17 is arranged. That is, a region where the contraction force by the leg-around elastic member 17 acts to the outside in the longitudinal direction from the abdominal end portion 11a and the back end portion 11b is formed. Thereby, it becomes possible to take La and Lb as long as possible. Accordingly, it is possible to increase the effect of pulling outward in the lateral direction by a dorsal band elastic member 35b (abdominal band elastic member 35a) described later.
  • the length of La which is the abdominal intersection area
  • Lb which is the dorsal intersection area
  • the length of La is approximately equal to the length of Lb, which is the dorsal intersection area.
  • the region La in FIG. 6 there are seven ventral belt elastic members 35 a that intersect the effective length portion of the leg-hole elastic member 17, and in the region Lb in FIG. 6, the effective length portion of the leg-hole elastic member 17
  • the force acting on the effective length of the leg-surrounding elastic member 17 acts almost evenly by the back-side belt elastic member 35b.
  • the fit of the absorbent main body 10 may be deteriorated on the back side when a person wearing a diaper moves his / her foot. Since humans often move their legs mainly to the front side (abdominal side), the absorbent main body 10 (absorbent core 11) is pulled to the front side (ventral side) each time the wearer moves his legs. Since the contraction force by the abdominal band elastic member 35a (the dorsal band elastic member 35b) is constant, it is longer than the force pulling the absorbent main body 10 (absorbent core 11) outward in the lateral direction (width direction) at the buttocks of the wearer.
  • the end 10eb of the absorbent main body 10 is laterally expanded each time the wearer moves his / her foot ( Since the absorbent main body 10 (absorbent core 11) is turned up, the heel portion is easily exposed.
  • the length of Lb which is the dorsal intersection region, is longer than the length of La, which is the ventral intersection region.
  • the region around the leg elastic member 17 is a region around the leg elastic member 35b where the portion (effective length) in the longitudinally extending state and the dorsal belt elastic member 35b intersect. 17 (the leg-surrounding auxiliary elastic member 19) is larger than a region intersecting the ventral belt elastic member 35a and a portion (effective length) in the longitudinally extended state. Specifically, in the region La in FIG.
  • the number of ventral side elastic members 35a intersecting the effective length portion of the leg elastic member 17 is seven, whereas in the region Lb in FIG. There are ten dorsal band elastic members 35b intersecting the effective length portion, more than seven. Therefore, the force by which the absorbent main body 10 (absorbent core 11) and the leg elastic member 17 are pulled outward in the lateral direction (width direction) by the back band elastic member 35b is increased in the lateral direction (width) by the ventral band elastic member 35a. Direction) greater than the force pulled outward. Thereby, in the diaper 1 of this embodiment, the fitting property on the back side can be enhanced.
  • the absorbent main body 10 (absorbent core 11) on the back side even when the wearer of the diaper 1 moves his / her foot to generate a force that pulls the absorbent main body 10 (absorbent core 11) in the longitudinal direction, the absorbent main body 10 (absorbent) on the back side. Since the force pulling the core 11) in the lateral direction (width direction) is large, the position of the absorbent main body 10 (absorbent core 11) is less likely to be displaced than in the comparative example. Further, the force pulling the absorbent main body 10 (absorbent core 11) in the lateral direction (width direction) on the back side is increased, while the absorbent main body 10 (absorbent core 11) in the lateral direction (width direction) is increased on the ventral side. ) Is not increased in force, a moderate fit can be maintained on the abdominal side, and it is difficult to prevent the wearer from moving the foot forward.
  • the lateral length Wa of the portion where the stretched portion of the ventral band elastic member 35a (that is, the effective length portion of the ventral band elastic member 35a) and the absorbent core 11 overlap is set.
  • the lateral length Wb of the stretched portion of the back band elastic member 35b (ie, the effective length portion of the back band elastic member 35b) and the absorbent core 11 see FIG. 5).
  • the strength of the force by which the absorbent core 11 is pulled outward in the lateral direction (width direction) can be adjusted. The longer the portion where the elastic member overlaps the absorbent core 11, the stronger the absorbent core 11 is pulled outward in the lateral direction (width direction) by the elastic member.
  • the force pulling the absorbent core 11 directly in the lateral direction (width direction) on the back side is prevented from becoming too strong.
  • a slight space is formed between the buttocks and the absorbent core 11, and the excreted feces can be held in the space without diffusing. it can.
  • the absorbent core 11 can be brought into close contact with the body, and leakage of excreted urine can be suppressed.
  • the elastic force when the back band elastic member 35b expands and contracts in the lateral direction is larger than the elastic force when the leg elastic member 17 or the leg auxiliary elastic member 19 expands and contracts in the vertical direction.
  • Each elastic member is provided so that is stronger. That is, when the leg elastic member 17 and the leg auxiliary elastic member 19 are attached to the absorbent main body 10, the back band elastic member 35 b is set to be higher than the ratio of extending the leg elastic member 17 and leg auxiliary elastic member 19.
  • Each elastic member is arrange
  • absorptive main body 10 absorbent core 11
  • absorptive main body 10 absorbent core 11
  • the post-treatment tape 50 when the diaper is worn, can suppress a feeling of strangeness in the touch on the buttock side.
  • the longitudinal length Lb of the region where the back band elastic member 35b and the leg elastic member 17 intersect is the vertical length La of the region where the ventral band elastic member 35a and the leg elastic member 17 intersect. Longer than. That is, the overlap part in the vertical direction of the back
  • the absorbent core 11 having a thickness in the thickness direction exists between the wearer's skin (buttock) and the post-treatment tape 50.
  • the absorbent core 11 having a thickness in the thickness direction exists between the wearer's skin (buttock) and the post-treatment tape 50.
  • the elastic member 35a (35b) of the central portion ADc is not used in the ventral belt member 30a (backside belt member 30b) for the purpose of reducing the stretchability of the horizontal central portion ADc of the lower region AD. It was continuous. As an example of this discontinuous elastic member, as shown in FIG. 3, elastic members 35 a (35 b) are present at both lateral ends ADce and ADce of the central portion ADc. The configuration in which the elastic member 35a (35b) is not present is illustrated in the horizontal central portion ADcc of the central portion ADc, but is not limited thereto.
  • FIG. 7 is a schematic plan view for explaining an example thereof.
  • the non-skin-side non-woven fabric 31 of the ventral band member 30 a is removed and the elastic member 35 a is exposed to the outside.
  • the elastic member 35a located at the central portion ADcc is in a state of being finely divided.
  • the elastic member 35a will not substantially impart stretchability to the central portion ADcc. Therefore, as long as the elastic member 35a is cut into pieces, it may be present in the central portion ADcc.
  • the length of the elastic member 35a in a chopped state is, for example, greater than 0 mm and not greater than 5 mm, and more desirably greater than 0 mm and not greater than 3 mm. However, if the elastic member 35a is chopped, the appearance deteriorates. Therefore, it is desirable that the elastic member 35D is not present in the central portion ADcc (FIG. 3).
  • the back band member 30b may be arranged continuously from one end to the other end of the back band member 30b in the lateral direction of the lower region AD. That is, The back band elastic member 35b may be continuously arranged over the entire lateral direction (not shown). As a result, a lateral expansion and contraction force is exerted on the central portion ADc by the back band elastic member 35b.
  • the leg elastic member 17 leg auxiliary auxiliary elastic member 19
  • the back side band member 30b are pulled to each other in the portion, and the entire back side band member 30b is pulled. Press against the wearer's buttocks. Thereby, the fitting property on the buttock side can be improved.
  • the ventral band elastic member 35a provided on the ventral band member 30a has a discontinuous portion in the central portion ADc.
  • the elastic member 35 is discontinuously arranged in the central portion ADc in the lateral direction in the lower region AD of FIG. 3, but this is not a limitation.
  • the elastic member 35 may not be disposed in the central portion ADc. That is, in the example of FIG. 3 described above, the end portion of the elastic member 35 is applied to the center portion ADc at the position of each end portion ADce, ADce in the horizontal direction. It does not have to be at the position of the end portion ADce of ADc.
  • the material of the exterior sheet 15b, the ventral side band member 30a, and the back side band member 30b is a non-woven fabric, but is not limited to the non-woven fabric.
  • a woven fabric or a sheet member other than the woven fabric may be used.
  • the exterior sheet 15b may be omitted, and in that case, the leak-proof sheet 15a forms the exterior of the absorbent main body 10.
  • the rubber thread is exemplified as the elastic member 35.
  • the elastic member 35 is not limited to this.
  • a belt-like rubber may be used as the elastic member 35, a belt-like non-woven fabric having elasticity or a belt-like resin film having elasticity.

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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)
PCT/JP2014/075862 2013-10-04 2014-09-29 吸収性物品 WO2014208780A2 (ja)

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ES2853923T3 (es) 2015-09-29 2021-09-20 Essity Hygiene & Health Ab Artículo absorbente de tipo pantalón desechable adaptado especialmente para un usuario masculino
BR112019016602B1 (pt) * 2017-02-28 2023-03-14 Kimberly-Clark Worldwide, Inc Método de fabricação de um artigo absorvente
JP2019118585A (ja) * 2017-12-28 2019-07-22 ユニ・チャーム株式会社 パンツ型吸収性物品

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JP5385075B2 (ja) * 2009-09-30 2014-01-08 ユニ・チャーム株式会社 着用物品
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JP5447091B2 (ja) * 2010-03-30 2014-03-19 王子ホールディングス株式会社 吸収性物品及びその製造方法
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JP5811615B2 (ja) * 2011-06-15 2015-11-11 王子ホールディングス株式会社 使い捨ておむつ
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TWI634879B (zh) 2018-09-11
JP6255203B2 (ja) 2017-12-27
CN105636564A (zh) 2016-06-01
TW201531285A (zh) 2015-08-16
WO2014208780A3 (ja) 2015-03-05
CN105636564B (zh) 2019-09-20

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