WO2020217684A1 - Absorbent article - Google Patents

Absorbent article Download PDF

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Publication number
WO2020217684A1
WO2020217684A1 PCT/JP2020/007062 JP2020007062W WO2020217684A1 WO 2020217684 A1 WO2020217684 A1 WO 2020217684A1 JP 2020007062 W JP2020007062 W JP 2020007062W WO 2020217684 A1 WO2020217684 A1 WO 2020217684A1
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WO
WIPO (PCT)
Prior art keywords
absorbent article
region
woven fabric
waist circumference
sheet
Prior art date
Application number
PCT/JP2020/007062
Other languages
French (fr)
Japanese (ja)
Inventor
祐介 川上
居▲義▼ 高
▲シィアォ▼▲トン▼ 郭
茵▲華▼ 王
橋本　達也
邦彦 桂川
翔希 長友
秀晃 槇
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 BR112021017083-9A priority Critical patent/BR112021017083B1/en
Publication of WO2020217684A1 publication Critical patent/WO2020217684A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—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 outer layers
    • 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
    • A61F13/51—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 outer layers
    • A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/551—Packaging before or after use

Definitions

  • the present invention relates to an absorbent article.
  • Disposable diapers and the like are known as absorbent articles that absorb excrement such as urine.
  • an absorbent main body that is applied to the crotch part of the wearer to absorb liquid such as excrement, a ventral waistline portion that covers the ventral side of the wearer, and a dorsal side of the wearer.
  • a so-called three-piece type having a dorsal waist circumference portion covering the portion is known.
  • Patent Document 1 discloses an absorbent article using a non-woven fabric having a plurality of openings as a cover sheet of the absorbent main body in order to improve the air permeability.
  • the joint strength between the waistline and the absorbent body is important for quality, but there are multiple holes in the joint between the waistline (ventral waistline and dorsal waistline) and the absorbent body. If this is provided, the joint area may be reduced and the joint strength may be reduced.
  • the present invention has been made in view of the above problems, and an object of the present invention is to provide an absorbent article capable of increasing the joint strength between the waist circumference portion and the absorbent main body.
  • the main invention for achieving the above object has a longitudinal direction, a left-right direction, and a thickness direction that intersect each other in the deployed state, and a ventral waist circumference portion located on one end side of the longitudinal direction and the longitudinal direction.
  • a dorsal girth portion located on the other end side and separate from the ventral girth portion and one end portion in the longitudinal direction are joined to the ventral girth portion, and the other end portion in the longitudinal direction is the dorsal side.
  • An absorbent article comprising an absorbent body joined to the waistline, wherein the absorbent body is arranged on the absorbent core and on the non-skin side of the absorbent core in the thickness direction.
  • a liquid-impermeable sheet and a cover sheet arranged on the non-skin side in the thickness direction of the liquid-impermeable sheet are provided, and the cover sheet, the ventral waist circumference portion, and the dorsal waist circumference portion are provided.
  • at least one of the ventral waist circumference portion and the dorsal waist circumference portion includes a non-woven fabric having a plurality of openings, and the cover sheet has a plurality of openings.
  • an absorbent article capable of increasing the joint strength between the waist circumference portion and the absorbent main body.
  • FIG. 5 is a schematic plan view of the unfolded and stretched diaper 1 as viewed from the skin side.
  • FIG. 5 is a schematic plan view of the unfolded and stretched diaper 1 as viewed from the non-skin side.
  • FIG. 2 is a schematic cross-sectional view taken along the line AA in FIG. It is the schematic perspective view of the joint part of the ventral waist circumference part 20 and the absorbent body 10. It is an enlarged view which shows the opening pattern of the opening 40.
  • FIG. 3 is a schematic cross-sectional view taken along the line BB of FIG. 9A to 9C are schematic views showing a state when the post-treatment tape 35 is peeled off.
  • the absorbent body is an absorbent article comprising an absorbent core, a liquid-impermeable sheet arranged on the non-skin side in the thickness direction of the absorbent core, and the liquid-impermeable sheet.
  • a cover sheet arranged on the non-skin side in the thickness direction with respect to the sex sheet is provided, and at least one of the cover sheet and the ventral waist circumference portion and the dorsal waist circumference portion is in the thickness direction.
  • At least one of the ventral girth portion and the dorsal girth portion includes a non-woven fabric having a plurality of openings, and the cover sheet has a plurality of openings in the thickness direction.
  • At least one of the cover sheet and the non-woven fabric has an open region in which openings are lined up at a predetermined pitch and a non-open region in which no open is present, and the non-open region is provided. It is desirable that the hole region has a region in which the width in the direction orthogonal to the predetermined direction is wider than the predetermined pitch along the predetermined direction.
  • the joining area is increased by providing the non-perforated region, so that the joining strength can be further increased.
  • the absorbent body is joined to the ventral waist circumference portion and the dorsal waist circumference portion with a hot melt adhesive, and the hot melt adhesive is applied in a planar shape. At the same time, it is desirable that the open area and the non-open area are straddled.
  • the joint strength between the waist circumference (ventral waist circumference and dorsal waist circumference) and the absorbent body can be increased.
  • the non-perforated region is provided on both the cover sheet and the non-woven fabric, and in the thickness direction, the non-perforated region of the cover sheet and the non-woven fabric are said. It is desirable that at least part of the non-perforated area overlaps.
  • the bonding strength can be further increased.
  • the non-perforated region of the absorbent article has a first non-perforated region along the longitudinal direction and the diagonal direction with respect to the left-right direction.
  • the non-opening region has a second non-opening region along a direction intersecting the diagonal direction, and the first non-opening region and the second non-opening region. It is desirable that the regions are formed in a grid pattern surrounding the perforated region.
  • the non-perforated region by surrounding the perforated region with the non-perforated region, the non-perforated region can compensate for the weakness of the material in the portion of the perforated region due to the presence of the perforated region.
  • an elastic member along the left-right direction is provided between the non-woven fabric and the sheet member, and the elastic member has a discontinuous region in the center in the left-right direction. It is desirable that the cover sheet has at least a part of the non-perforated region at a portion overlapping with the elastic member on the outside of the discontinuous region in the left-right direction.
  • the region of the joint portion where the elastic member and the cover sheet overlap is easily peeled off because the material expands and contracts due to the elastic force of the elastic member. Therefore, in order to increase the adhesive strength of the portion, the bonding strength can be increased by increasing the bonding area by making the cover sheet of the region non-perforated.
  • a pair of leg circumference openings are formed by the ventral waist circumference portion, the dorsal waist circumference portion, and the absorbent body, and the non-woven fabric is provided at the end portion on the leg circumference opening side. It is desirable that the cover sheet has at least a part of the perforated area, and the cover sheet has at least a part of the non-perforated area at the end on the opening side around the leg.
  • a tape member for holding the absorbent article in a rolled state when the absorbent article is discarded is bonded to the non-skin side of the non-woven fabric in the thickness direction of the absorbent article. It is desirable that the non-woven fabric has the non-perforated region in at least a part of the bonding region with the tape member.
  • the bonding region between the non-woven fabric and the sheet member of the absorbent article straddles the tape member in the left-right direction.
  • a hole (around the tape member) is opened by straddling the bonding region between the non-woven fabric and the sheet member in the left-right direction of the post-treatment tape so as to resist the pulling force of the tape member. It is possible to prevent the non-woven fabric from tearing from the portion.
  • the absorbent body further includes an inner sheet having a pattern on the skin side in the thickness direction of the cover sheet, and the weight per unit area of the sheet member is the non-woven fabric. It is desirable that it is less than the weight per unit area of.
  • the design of the inner sheet becomes easy to see.
  • FIG. 1 is a schematic perspective view of a disposable diaper 1 (hereinafter referred to as “diaper 1”).
  • FIG. 2 is a schematic plan view of the unfolded and stretched diaper 1 as viewed from the skin side.
  • FIG. 3 is a schematic plan view of the unfolded and stretched diaper 1 as viewed from the non-skin side.
  • FIG. 4 is a schematic cross-sectional view taken along the line AA of FIG. In FIG. 4, a material having a plurality of openings (opening 40 described later) is shown by a broken line, and a material having no holes is shown by a solid line.
  • the above-mentioned “deployed state” refers to both ends of the ventral side portion (ventral waist circumference portion 20 described later) and both ends of the dorsal side portion (dorsal waist circumference portion 30 described later) in the left-right direction of the diaper 1. It is a state in which the diaper 1 is developed on a plane by breaking the connection with the portion, separating the ventral portion and the dorsal portion, and opening the diaper 1 in the longitudinal direction thereof. Further, the “extended state” of the diaper 1 is a state in which the entire diaper 1 (the entire product) is extended without wrinkles, specifically, each member constituting the diaper 1 (for example, the absorbent body 10 and the waist circumference described later). It refers to a state in which the dimensions of the parts (20, 30 and the like) are extended until they match or are close to the dimensions of the individual member.
  • the diaper 1 has a vertical direction, a horizontal direction, and a front-rear direction that intersect each other in the pants type state (FIG. 1).
  • the diaper 1 is a so-called three-piece type, and has an absorbent main body 10 that is applied to the crotch portion of the wearer and absorbs a liquid such as excrement, and an exterior body 2 that covers the waist circumference of the wearer.
  • the exterior body 2 has a ventral waist circumference portion 20 and a dorsal waist circumference portion 30.
  • a waist circumference opening BH and a pair of leg circumference openings LH are formed by the absorbent main body 10, the ventral waist circumference portion 20, and the dorsal waist circumference portion 30.
  • the upper side in the vertical direction corresponds to the waist opening BH side, and the lower side corresponds to the crotch part side.
  • the front side in the front-rear direction corresponds to the ventral side of the wearer, and the rear side corresponds to the back side of the wearer.
  • the diaper 1 In the unfolded state of FIG. 2, the diaper 1 has a longitudinal direction, a left-right direction, and a thickness direction that intersect each other.
  • one side in the longitudinal direction in this deployed state is also referred to as “ventral” or “anterior”
  • the other side in the longitudinal direction is also referred to as “dorsal” or “rear”.
  • the longitudinal direction in the unfolded state is the direction along the vertical direction in the pants-shaped state.
  • the thickness direction is the direction in which the materials constituting the diaper 1 are laminated.
  • the side in contact with the wearer in the thickness direction is the skin side, and the opposite side is the non-skin side.
  • the ventral waist circumference 20 and the dorsal waist circumference 30 are separate bodies.
  • the ventral waist circumference 20 is located on the ventral side in the longitudinal direction
  • the dorsal waist circumference 30 is located on the dorsal side in the longitudinal direction.
  • the absorbent main body 10 has a substantially rectangular shape in a plan view, and is arranged in the center in the left-right direction while the longitudinal direction thereof is along the vertical direction of the diaper 1.
  • the ventral end of the absorbent body 10 in the longitudinal direction is joined to the ventral girth portion 20, and the dorsal end in the longitudinal direction is joined to the dorsal girth portion 30.
  • the unfolded diaper 1 is folded in half at the substantially central portion C10 in the longitudinal direction, and the ventral waist circumference portion 20 and the dorsal waist circumference portion 30 are joined by welding or the like in the left-right direction, respectively. It becomes the diaper 1 in the pants type state shown in.
  • the absorbent main body 10 is a member having a function of absorbing excrement such as urine.
  • the absorbent core 11, the top sheet 12, the back sheet 13, the inner sheet 14, and the cover sheet 15 See FIG. 4).
  • the absorbent core 11 is formed by molding a liquid absorbent fiber such as pulp fiber into a predetermined shape, and a highly absorbent polymer (so-called SAP) or the like is mixed therein. As a result, the absorbent core 11 absorbs and retains excrement such as urine.
  • SAP highly absorbent polymer
  • the shape of the absorbent core 11 is not limited to the shape of an hourglass in a plan view as shown in FIG. 2, and may be, for example, a substantially rectangular shape in a plan view.
  • the top sheet 12 is a liquid-permeable non-woven fabric having a flat size larger than that of the absorbent core 11 (for example, an air-through non-woven fabric or a spunbonded non-woven fabric).
  • the top sheet 12 is arranged on the skin side in the thickness direction of the absorbent core 11 and comes into contact with the wearer's skin when the diaper 1 is worn.
  • the back sheet 13 (corresponding to a liquid-impermeable sheet) is a liquid-impermeable sheet arranged on the non-skin side of the absorbent body 10, and is formed of, for example, a resin film such as polyethylene or polypropylene.
  • a resin film such as polyethylene or polypropylene.
  • the inner sheet 14 is a sheet-like member arranged between the back sheet 13 and the cover sheet 15 (in other words, on the skin side of the cover sheet 15), and is formed of, for example, a resin film or a non-woven fabric. .. Further, the inner sheet 14 of the present embodiment has a pattern (not shown) on the surface on the non-skin side.
  • the design includes a pattern, a picture, a symbol, a character, and the like, and is not particularly limited.
  • the inner sheet 14 may be omitted.
  • the cover sheet 15 is a sheet-like member arranged on the most non-skin side (in other words, the non-skin side of the back sheet 13) of the absorbent main body 10, and is formed of, for example, a non-woven fabric.
  • the material fiber of the non-woven fabric include polypropylene (PP), polyethylene (PE), polyethylene terephthalate (PET) and the like. Further, it is also possible to use not only a single fiber such as polypropylene or polyethylene but also a composite fiber (Bico) having a core-sheath structure made of polypropylene or polyethylene.
  • the non-woven fabric include thermal-bonded non-woven fabric, spunbonded non-woven fabric, spunlaced non-woven fabric and the like.
  • the cover sheet 15 of the present embodiment has a plurality of openings 40. As a result, it is possible to improve the breathability of the diaper 1 and the visibility of the design of the internal material (specifically, the inner sheet 14). The formation pattern of the opening 40 and the like will be described later.
  • the ventral waist circumference portion 20 is a portion that covers the waist circumference on the ventral side of the wearer, and is a non-woven fabric 21 arranged on the non-skin side in the thickness direction and a non-perforated sheet 22 arranged on the skin side of the non-woven fabric 21. It has a plurality of elastic members 23 provided between the non-woven fabric 21 and the non-perforated sheet 22 (corresponding to the sheet member).
  • the dorsal girth portion 30 is a portion that covers the dorsal girth of the wearer, and is arranged on the non-woven fabric 31 arranged on the non-skin side in the thickness direction and on the skin side of the wearer rather than the non-woven fabric 31. It has a non-perforated sheet 32 (corresponding to a sheet member) and a plurality of elastic members 33 provided between the non-woven fabric 31 and the non-perforated sheet 32. Further, a post-treatment tape 35 (corresponding to a tape member) is provided on the non-skin side surface of the dorsal waist circumference portion 30.
  • the ventral waist circumference 20 (and the dorsal waist circumference 30) are joined to the non-skin side surface of the absorbent body 10 (that is, the non-skin side surface of the cover sheet 15).
  • This joint portion (hereinafter, also referred to as a joint portion) corresponds to a region where the waist circumference portion (ventral waist circumference portion 20, dorsal waist circumference portion 30) and the absorbent main body 10 (cover sheet 15) overlap in the thickness direction. ..
  • the non-woven fabrics 21 and 31 are the same non-woven fabrics as the cover sheet 15. Further, the nonwoven fabrics 21 and 31 have a plurality of openings 40 like the cover sheet 15. The pattern of the opening 40 and the like will be described later.
  • the non-perforated sheets 22 and 32 are sheet-like members having no perforations, and a non-woven fabric or the like made of the same material as the non-woven fabrics 21 and 31 can be used. It is desirable that the weights of the non-perforated sheets 22 and 32 per unit area (so-called basis weight) are smaller than the weights of the non-woven fabrics 21 and 31, respectively.
  • the "weight per unit area (weight)” is an average value of the results of measuring the weights at a plurality of places (for example, 10 places) for each non-woven fabric.
  • the non-woven fabrics 21 and 31 having a large weight per area (large amount of fibers) do not transmit light at the edges of the openings 40, and the color of the non-woven fabric itself can be clearly seen.
  • the non-perforated sheets 22 and 32 having a small weight per unit area (small amount of fibers) transmit light and therefore have a sense of sheerness.
  • the contrast between the color depth of the edge of each perforated 40 and the sheer feeling of the non-perforated sheets 22 and 32 is visually observed. The effect is produced and the contour of each opening 40 becomes more clearly visible. Therefore, the opening 40 becomes easy to see.
  • the sheer feeling of the non-perforated sheets 22 and 32 makes it easier to visually recognize the design of the internal material (inner sheet 14 in the present embodiment) through the openings 40 of the non-woven fabrics 21 and 31 and the cover sheet 15.
  • the plurality of elastic members 23 are thread-like members having elasticity, and are arranged side by side in the vertical direction between the non-woven fabric 21 and the non-perforated sheet 22, and are fixed in a state of being extended in the horizontal direction. Further, the plurality of elastic members 33 are arranged side by side in the vertical direction between the non-woven fabric 31 and the non-perforated sheet 32, and are fixed in a state of being extended in the horizontal direction. As a result, the ventral waist circumference portion 20 and the dorsal waist circumference portion 30 are provided with elasticity in the left-right direction. Examples of the elastic members 23 and 33 include thread-like rubber and spandex. Discontinuous regions 23a and 33a in which the elastic members 23 and 33 are discontinuous are provided in the portion overlapping the absorbent main body 10 in the thickness direction, respectively (see FIG. 2).
  • the post-treatment tape 35 is a member for holding the diaper 1 in a rolled state when the used diaper 1 is discarded, and as shown in FIG. 3, at the center of the dorsal waist circumference portion 30 in the left-right direction. It is provided on the non-skin side surface of the non-woven fabric 31. Details of the post-processing tape 35 will be described later.
  • FIG. 5 is a schematic exploded perspective view of the joint portion (the portion indicated by X in FIG. 4) between the ventral waist circumference portion 20 and the absorbent main body 10.
  • FIG. 6 is an enlarged view showing an opening pattern of the opening 40 in the cover sheet 15.
  • the cover sheet 15 has a plurality of openings 40.
  • the opening 40 is a circular hole and penetrates the cover sheet 15 in the thickness direction.
  • the opening 40 can be formed by using, for example, a heated pin member (not shown). ..
  • non-woven fabric 21 of the ventral waist circumference 20 also has a plurality of openings 40.
  • the non-woven fabric 21 having a plurality of openings 40 and the cover sheet 15 having a plurality of openings 40 are directly joined (for example, when the non-woven fabric 21 is arranged on the skinmost side of the ventral waist circumference 20), both Since the sheet has holes 40, the bonding area may be reduced and the bonding strength may be reduced. In particular, in the diaper 1, the strength of the joint between the exterior body 2 (here, the ventral waist circumference 20) and the absorbent body 10 is important in terms of quality.
  • the non-perforated sheet 22 is arranged between the non-woven fabric 21 and the cover sheet 15 in the thickness direction. More specifically, the ventral waist circumference 20 is formed of two sheets, a non-woven fabric 21 and a non-perforated sheet 22, and the non-perforated sheet 22 is arranged on the skin side of the non-woven fabric 21. By doing so, when the absorbent main body 10 and the ventral waist circumference portion 20 are joined, the non-woven fabric 21 having a plurality of openings 40 and the cover sheet 15 having a plurality of openings 40 make the non-perforated sheet 22. It will be joined through.
  • the area of the joint portion is larger than that in the case where the non-woven fabric 21 and the cover sheet 15 are directly joined, so that the joint strength between the absorbent main body 10 and the ventral waist circumference portion 20 can be increased. it can.
  • the opening 40 of the cover sheet 15 has a circular shape, but is not limited to this, and may have various shapes (for example, an elliptical shape). The same applies to the openings 40 of the non-woven fabric 21 and the non-woven fabric 31.
  • the cover sheet 15 includes a perforated region 15a and a non-perforated region 15b.
  • the opening area 15a is an area in which a plurality of opening 40s are lined up at a predetermined pitch.
  • the openings 40 of the opening region 15a are arranged at a pitch d1 in the R direction and the R'direction shown in FIG. 6, respectively.
  • the R direction is an oblique direction with respect to the longitudinal direction and the left-right direction
  • the R'direction is a direction intersecting the R direction (orthogonal in the present embodiment).
  • the force is dispersed when the diaper 1 is pulled up, which makes it difficult to pull up the diaper 1.
  • the plurality of openings 40 are regularly arranged, the force is not dispersed and it is easy to pull up.
  • the non-perforated region 15b is a region where no perforation exists.
  • the non-opening region 15b has a first non-opening region 15b 1 and a second non-opening region 15b 2 .
  • the first non-opening region 15b 1 is a region along the R direction and having a width (d2) in the R'direction wider than the pitch d1.
  • the second non-opening region 15b 2 is a region along the R'direction (direction intersecting the R direction) and having a width (d2) in the R direction wider than the pitch d1.
  • the joint area is increased as compared with the case where all of them are the open region 15a. , The joint strength can be further increased.
  • the non-perforated region 15b of the present embodiment is a region (first non-perforated region 15b 1 , second non-perforated region 15b 2 ) along the direction oblique to the longitudinal direction and the left-right direction. Have. As a result, the strength against tension in the longitudinal direction and the lateral direction can be increased. For example, it becomes difficult to tear when pulling up the diaper 1.
  • first non-opening region 15b 1 and the second non-opening region 15b 2 of the present embodiment are formed in a grid pattern surrounding the open region 15a.
  • the non-opening region 15b compensates for the weakness of the material in the portion of the perforated region 15a due to the presence of the perforated 40. be able to.
  • the first non-opening region 15b 1 and the second non-opening region 15b 2 are provided so that the perforated region 15a is substantially square, but the present invention is not limited to this.
  • the first non-opening region 15b 1 and the second non-opening region 15b 2 may be provided so that the perforated region 15a is substantially rectangular.
  • the first non-perforated region 15b 1 and the second non-perforated region 15b 2 are orthogonal to each other, but may intersect each other (they may not be orthogonal to each other).
  • the first non-opening region 15b 1 and the second non-opening region 15b 2 may be provided so that the shape of the perforated region 15a becomes a rhombus.
  • the absorbent body 10 and the ventral waist circumference 20 are joined with a hot melt adhesive.
  • a hot melt adhesive for example, EVA type, elastomer type, olefin type, polyester / polyamide type and the like can be used.
  • the hot melt adhesive coating method include known coating methods such as spiral coating that can be applied in a spiral shape, omega coating that can be applied in a wavy shape, and control seam coating.
  • the hot melt adhesive is applied in a surface shape at the joint portion between the absorbent main body 10 and the ventral waist circumference portion (the joint surface between the cover sheet 15 and the non-perforated sheet 22) by a stot coater method or the like. It straddles the open region 15a and the non-open region 15b (first non-open region 15b 1 and second non-open region 15b 2 ). As a result, the joint strength between the exterior body 2 (here, the ventral waist circumference 20) and the absorbent body 10 can be increased.
  • the non-woven fabric 21 (31) and the non-perforated sheet 22 (32) are joined with a hot melt adhesive applied around the elastic member 23 (33) (see FIG. 8).
  • a hot melt adhesive may be applied to a position different from the elastic members 23 and 33 for joining.
  • the non-woven fabric 21 of the ventral waist circumference 20 is also provided with a plurality of openings 40 in the same pattern as the cover sheet 15. That is, the non-woven fabric 21 includes an opening region 21a in which a plurality of openings 40 are lined up at a pitch d1 and a non-opening region 21b in which no openings exist. Further, the non-opening region 21b has a first non-opening region 21b 1 and a second non-opening region 21b 2 formed in a grid pattern. Then, in the thickness direction, the non-perforated region 15b of the cover sheet 15 and the non-perforated region 21b of the non-woven fabric 21 overlap each other with the non-perforated sheet 22 sandwiched between them.
  • the joint strength between the ventral waist circumference 20 and the absorber 10 can be further increased.
  • the non-perforated region 15b and the non-perforated region 21b are completely overlapped in the thickness direction, but the present invention is not limited to this, and at least a part of each non-opening region is overlapped. (For example, they may be arranged so as to be offset in the left-right direction or the longitudinal direction). As a result, the connection strength can be increased as compared with the case where the non-opened regions do not overlap each other in the thickness direction.
  • the opening patterns of the plurality of openings 40 of the non-woven fabric 21 (opening regions 21a, non-opening regions 21b) and the opening patterns of the plurality of openings 40 of the cover sheet 15 (opening regions). 15a, non-woven area 15b) are the same, but may be different.
  • the non-woven fabric 31 of the back side waist circumference portion 30 has the same pattern as the cover sheet 15.
  • a plurality of openings 40 are provided. That is, the non-woven fabric 31 includes an opening region 31a in which a plurality of openings 40 are lined up at a pitch d1 and a non-opening region 31b in which the openings 40 do not exist. Further, the non-opening region 31b has a first non-opening region 31b 1 and a second non-opening region 31b 2 formed in a grid pattern.
  • the non-perforated region 15b of the cover sheet 15 and the non-perforated region 31b of the non-woven fabric 31 overlap each other with the non-perforated sheet 32 sandwiched between them.
  • the joint strength between the dorsal waist circumference portion 30 and the absorber 10 can be increased.
  • the cover sheet 15 of the absorbent main body 10 is provided on the outer side of the discontinuous regions 23a and 33a of the elastic members 23 and 33 of the waist circumference portion (ventral waist circumference portion 20 and dorsal waist circumference portion 30) in the left-right direction.
  • 33 has at least a part of the non-perforated region 15b in the region (the region in the range indicated by Y in FIG. 3) that overlaps with the effective length in the thickness direction (preferably, the entire region is non-open).
  • Hole region 15b) is a region in which a force for contracting the elastic members 23 and 33 acts in the left-right direction.
  • this region is easily peeled off because the material expands and contracts due to the elastic force of the elastic members 22 and 23. Therefore, in order to increase the adhesive strength of the portion, the bonding strength can be increased by increasing the bonding area by making the cover sheet 15 of the region non-perforated.
  • the cover sheet 15 of the absorbent main body 10 also has at least a part of the non-opening region 15b at the end portion (the portion indicated by TA in FIG. 3) on the LH side of the pair of leg circumference openings.
  • the non-woven fabrics 21 and 31 of the waist circumference portion have an opening region 21a at the end portion (the portion indicated by TB in FIG. 3) on the LH side of the pair of leg circumference openings. It has at least a part of the hole region 31a.
  • the lower portion of the leg circumference opening LH (the portion of TA in FIG. 3) becomes a non-open hole, so that leakage can be suppressed, and the upper portion of the leg circumference opening LH (the portion of TB in FIG. 3) can be suppressed.
  • the post-treatment tape 35 is provided on the non-skin side surface of the dorsal waist circumference portion 30.
  • FIG. 7 is a schematic perspective view of the post-processing tape 35 in the unfolded state
  • FIG. 8 is a schematic cross section of BB of FIG. Note that FIG. 8 omits the illustration of the absorbent body 10.
  • the post-treatment tape 35 has a tape body 35a, a support portion 35b, and a knob portion 35c.
  • the tape body 35a is an elongated strip-shaped member. As shown in FIG. 8, the tape main body 35a provided on the diaper 1 is in a state of being folded in the longitudinal direction. That is, in the folded tape body 35a, at least a part of the surfaces facing each other (including the surface facing the support portion 35b) is provided with a peelable adhesive layer (not shown). As a result, the tape body 35a is temporarily fixed in the folded state.
  • the support portion 35b is a portion that supports the tape main body 35, and in the present embodiment, is a portion that is bifurcated (front and back directions of the tape main body 35a) at the end portion of the tape main body 35a. In other words, one end of the tape body 35a is connected between both ends of the support portion 35b. Further, as shown in FIG. 8, the surface of the support portion 35b opposite to the tape body 35a is hot-melted on the non-skin side surface of the dorsal waist circumference portion 30 (that is, the non-skin side surface of the non-woven fabric 31). It is fixed (joined) so that it cannot be peeled off with an adhesive or the like. As a result, the bonding region 36 is formed between the post-treatment tape 35 (support portion 35b) and the non-woven fabric 31.
  • the knob portion 35c is a portion to be gripped by a finger when the post-processing tape 35 (tape body 35a) is peeled off, and is provided at an end portion of the tape body 35a opposite to the support portion 35b.
  • each member of the post-treatment tape 35 examples include resin materials such as polyethylene and polypropylene, but the material is not limited to this.
  • a pulp material such as paper may be used.
  • 9A to 9C are schematic views showing a state when the post-treatment tape 35 is peeled off.
  • the knob portion 35c is picked and pulled in a direction away from the support portion 35b. Then, as shown in FIGS. 9A to 9C, the folded tape body 35a is gradually peeled off.
  • the tape body 35a is wound around the diaper 1 rolled in the longitudinal direction while keeping the absorbent body 10 inside.
  • the diaper 1 can be held in a rolled state.
  • the non-woven fabric 31 has a non-perforated region 31b in at least a part of the bonding region 36 (the bonding region between the post-treatment tape 35 and the non-woven fabric 31).
  • the bonding region 36 the bonding region between the post-treatment tape 35 and the non-woven fabric 31.
  • the non-woven fabric 31 and the non-perforated sheet 32 are joined with a hot melt adhesive (not shown) directly applied around the elastic member 33. Then, in the thickness direction, the joint region 36 between the support portion 35b (post-treatment tape 35) and the non-woven fabric 31 and the joint region between the non-woven fabric 31 and the non-perforated sheet 32 (here, the elastic member 33) partially overlap. ing. As described above, it is desirable that the bonding region 36 and the bonding region between the non-woven fabric 31 and the non-perforated sheet 32 overlap at least partially in the thickness direction. As a result, when the post-treatment tape 35 is peeled off, only the non-woven fabric 31 is not pulled, so that the non-woven fabric 31 is not easily torn. In addition, the post-treatment tape 35 can be easily peeled off.
  • the non-woven fabric 31 and the non-perforated sheet 32 are joined by a hot melt adhesive applied around the elastic member 33, and the elastic member 33 is arranged along the left-right direction.
  • the bonding region between the non-woven fabric 31 and the non-perforated sheet 32 (in other words, the elastic member 33) straddles the post-treatment tape 35 in the left-right direction (see FIG. 3).
  • the non-woven fabric 31 (around the post-treatment tape 35) may be pulled toward the post-treatment tape 35 by the pulling force of the post-treatment tape 35 and may be torn from the opening 40.
  • the support portion 35b is bifurcated at the end portion of the tape body 35a, when the tape body 35a is pulled, it is between both ends of the support portion 35b (support). The tensile stress is greatest at the connection portion between the portion 35b and the tape body 35a). As a result, even if the tape body 35a is pulled, peeling from the end portion of the support portion 35b is unlikely to occur.
  • a plurality of openings 40 are provided in both the non-woven fabric 21 of the ventral waist circumference 20 and the non-woven fabric 31 of the dorsal waist circumference 30, but a plurality of openings 40 are provided in either one. You may be.
  • the non-woven fabrics 21 and 31 and the cover sheet 15 are provided at a plurality of portions other than the joint portion between the absorbent main body 10 and the exterior body 2 (ventral waist circumference portion 20, dorsal waist circumference portion 30). Although it has openings 40, it is not necessary that a plurality of openings 40 are provided in a portion other than the joint portion.
  • the waist circumference portion may be composed of three or more sheets, and at least one of them may have a plurality of openings 40.
  • a non-perforated material for example, a print film
  • Disposable diaper (absorbent article), 2 Exterior, 10 absorbent body, 11 absorbent core, 12 top sheet, 13 back sheet (liquid impermeable sheet), 14 inner sheet, 15 cover sheet, 15a perforated area, 15b non-perforated area, 15b 1 first non-perforated area, 15b 2 second non-perforated area, 20 ventral waist circumference, 21 non-woven fabric, 21a perforated area, 21b non-perforated area, 21b 1 first non-perforated area, 21b 2 second non-perforated area, 22 Non-perforated sheet (seat member), 23 Elastic member, 23a discontinuous area, 30 Dorsal girth, 31 Non-woven fabric, 31a perforated area, 31b non-perforated area, 31b 1 first non-perforated area, 31b 2 second non-perforated area, 32 non-perforated sheet (sheet member), 33 elastic member, 33a discontinuous area, 35 Post-treatment tape (tape member), 35a tape body, 35b support part, 35c

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  • Absorbent Articles And Supports Therefor (AREA)

Abstract

This absorbent article has a longitudinal direction, a left-right direction, and a thickness direction crossing each other in an unfolded state, and is provided with a ventral waist part (20), a dorsal waist part (30), and an absorbent main body (10) in which one end section in the longitudinal direction is bonded to the ventral waist part and the other end section is bonded to the dorsal waist part. The absorbent main body is provided with an absorbent core (11), a liquid-impermeable sheet (13) disposed on the non-skin side of the absorbent core, and a cover sheet (15) disposed on the non-skin side of the liquid-impermeable sheet. In a region in which the cover sheet, the ventral waist part, and the dorsal waist part overlap in the thickness direction, the ventral waist part and the dorsal waist part are provided with nonwoven fabrics (21, 31) having a plurality of pores (40), and the cover sheet is provided with a plurality of pores (40). In the thickness direction, sheet members (22, 32) without pores are disposed between the cover sheet and the non-woven fabrics.

Description

吸収性物品Absorbent article
　本発明は、吸収性物品に関する。 The present invention relates to an absorbent article.
　尿などの排泄物を吸収する吸収性物品として使い捨ておむつ等が知られている。このような使い捨ておむつとして、例えば、着用者の股間部にあてがわれ排泄液等の液体を吸収する吸収性本体と、着用者の腹側部を覆う腹側胴回り部と、着用者の背側部を覆う背側胴回り部とを有する、所謂３ピースタイプのものが知られている。また、特許文献１には、通気性の向上を図るため、吸収性本体のカバーシートとして複数の開孔を有する不織布を用いた吸収性物品が開示されている。 Disposable diapers and the like are known as absorbent articles that absorb excrement such as urine. As such disposable diapers, for example, an absorbent main body that is applied to the crotch part of the wearer to absorb liquid such as excrement, a ventral waistline portion that covers the ventral side of the wearer, and a dorsal side of the wearer. A so-called three-piece type having a dorsal waist circumference portion covering the portion is known. Further, Patent Document 1 discloses an absorbent article using a non-woven fabric having a plurality of openings as a cover sheet of the absorbent main body in order to improve the air permeability.
特開２０１８－５７８１０号公報JP-A-2018-57810
　３ピースタイプの使い捨ておむつでは、胴回り部と吸収性本体の接合強度が品質において重要であるが、胴回り部（腹側胴回り部、背側胴回り部）と吸収性本体の接合部に複数の開孔を設けた場合、接合面積が少なくなり、接合強度が低下するおそれがある。 In a 3-piece type disposable diaper, the joint strength between the waistline and the absorbent body is important for quality, but there are multiple holes in the joint between the waistline (ventral waistline and dorsal waistline) and the absorbent body. If this is provided, the joint area may be reduced and the joint strength may be reduced.
　本発明は、上記のような問題に鑑みてなされたものであって、胴回り部と吸収性本体との接合強度を高めることができる吸収性物品を提供することを目的とする。 The present invention has been made in view of the above problems, and an object of the present invention is to provide an absorbent article capable of increasing the joint strength between the waist circumference portion and the absorbent main body.
　上記目的を達成するための主たる発明は、展開状態において互いに交差する長手方向と左右方向と厚さ方向とを有し、前記長手方向の一端側に位置する腹側胴回り部と、前記長手方向の他端側に位置し、前記腹側胴回り部とは別体の背側胴回り部と、前記長手方向の一端部が前記腹側胴回り部に接合され、前記長手方向の他端部が前記背側胴回り部に接合された吸収性本体と、を備えた吸収性物品であって、前記吸収性本体は、吸収性コアと、前記吸収性コアよりも前記厚さ方向の非肌側に配置された液不透過性シートと、前記液不透過性シートよりも前記厚さ方向の非肌側に配置されたカバーシートと、を備え、前記カバーシートと、前記腹側胴回り部及び前記背側胴回り部のうちの少なくとも一方とが前記厚さ方向に重なる領域において、前記腹側胴回り部及び前記背側胴回り部のうちの少なくとも一方は、複数の開孔を有する不織布を備え、前記カバーシートは、複数の開孔を備え、前記厚さ方向において、前記カバーシートと、前記不織布との間には、非開孔のシート部材が少なくとも一枚配置されていることを特徴とする吸収性物品である。　
　本発明の他の特徴については、本明細書及び添付図面の記載により明らかにする。 The main invention for achieving the above object has a longitudinal direction, a left-right direction, and a thickness direction that intersect each other in the deployed state, and a ventral waist circumference portion located on one end side of the longitudinal direction and the longitudinal direction. A dorsal girth portion located on the other end side and separate from the ventral girth portion and one end portion in the longitudinal direction are joined to the ventral girth portion, and the other end portion in the longitudinal direction is the dorsal side. An absorbent article comprising an absorbent body joined to the waistline, wherein the absorbent body is arranged on the absorbent core and on the non-skin side of the absorbent core in the thickness direction. A liquid-impermeable sheet and a cover sheet arranged on the non-skin side in the thickness direction of the liquid-impermeable sheet are provided, and the cover sheet, the ventral waist circumference portion, and the dorsal waist circumference portion are provided. In a region where at least one of the above overlaps in the thickness direction, at least one of the ventral waist circumference portion and the dorsal waist circumference portion includes a non-woven fabric having a plurality of openings, and the cover sheet has a plurality of openings. It is an absorbent article characterized in that at least one non-perforated sheet member is arranged between the cover sheet and the non-woven fabric in the thickness direction.
Other features of the present invention will be clarified by the description in the present specification and the accompanying drawings.
　本発明によれば、胴回り部と吸収性本体との接合強度を高めることができる吸収性物品を提供できる。 According to the present invention, it is possible to provide an absorbent article capable of increasing the joint strength between the waist circumference portion and the absorbent main body.
おむつ１の概略斜視図である。It is a schematic perspective view of the diaper 1. 展開且つ伸長状態のおむつ１を肌側から見た概略平面図である。FIG. 5 is a schematic plan view of the unfolded and stretched diaper 1 as viewed from the skin side. 展開且つ伸長状態のおむつ１を非肌側から見た概略平面図である。FIG. 5 is a schematic plan view of the unfolded and stretched diaper 1 as viewed from the non-skin side. 図２中のＡ－Ａ概略断面図である。FIG. 2 is a schematic cross-sectional view taken along the line AA in FIG. 腹側胴回り部２０と吸収性本体１０との接合部の概略斜視図である。It is the schematic perspective view of the joint part of the ventral waist circumference part 20 and the absorbent body 10. 開孔４０の開孔パターンを示す拡大図である。It is an enlarged view which shows the opening pattern of the opening 40. 展開状態の後処理テープ３５の概略斜視図である。It is a schematic perspective view of the post-processing tape 35 in the unfolded state. 図３のＢ－Ｂ概略断面図である。FIG. 3 is a schematic cross-sectional view taken along the line BB of FIG. 図９Ａ～図９Ｃは、後処理テープ３５を引き剥がすときの様子を示す概略図である。9A to 9C are schematic views showing a state when the post-treatment tape 35 is peeled off.
　本明細書及び添付図面の記載により、少なくとも以下の事項が明らかとなる。 At least the following matters will be clarified by the description in this specification and the attached drawings.
　展開状態において互いに交差する長手方向と左右方向と厚さ方向とを有し、前記長手方向の一端側に位置する腹側胴回り部と、前記長手方向の他端側に位置し、前記腹側胴回り部とは別体の背側胴回り部と、前記長手方向の一端部が前記腹側胴回り部に接合され、前記長手方向の他端部が前記背側胴回り部に接合された吸収性本体と、を備えた吸収性物品であって、前記吸収性本体は、吸収性コアと、前記吸収性コアよりも前記厚さ方向の非肌側に配置された液不透過性シートと、前記液不透過性シートよりも前記厚さ方向の非肌側に配置されたカバーシートと、を備え、前記カバーシートと、前記腹側胴回り部及び前記背側胴回り部のうちの少なくとも一方とが前記厚さ方向に重なる領域において、前記腹側胴回り部及び前記背側胴回り部のうちの少なくとも一方は、複数の開孔を有する不織布を備え、前記カバーシートは、複数の開孔を備え、前記厚さ方向において、前記カバーシートと、前記不織布との間には、非開孔のシート部材が少なくとも一枚配置されていることを特徴とする吸収性物品。 It has a longitudinal direction, a left-right direction, and a thickness direction that intersect each other in the deployed state, and is located on the ventral waist circumference portion located on one end side in the longitudinal direction and the ventral waist circumference located on the other end side in the longitudinal direction. A dorsal girth portion separate from the portion, an absorbent main body in which one end in the longitudinal direction is joined to the ventral girth portion and the other end in the longitudinal direction is joined to the dorsal girth portion. The absorbent body is an absorbent article comprising an absorbent core, a liquid-impermeable sheet arranged on the non-skin side in the thickness direction of the absorbent core, and the liquid-impermeable sheet. A cover sheet arranged on the non-skin side in the thickness direction with respect to the sex sheet is provided, and at least one of the cover sheet and the ventral waist circumference portion and the dorsal waist circumference portion is in the thickness direction. At least one of the ventral girth portion and the dorsal girth portion includes a non-woven fabric having a plurality of openings, and the cover sheet has a plurality of openings in the thickness direction. , An absorbent article characterized in that at least one non-perforated sheet member is arranged between the cover sheet and the non-woven fabric.
　このような吸収性物品によれば、吸収性本体と胴回り部との接合部において、吸収性本体の非肌側のカバーシートと、胴回り部の不織布にそれぞれ複数の開孔が設けられていても、その間に非開孔のシート部材を少なくとも一枚挟むことにより、胴回り部と吸収性本体との接合強度を高めることができる。 According to such an absorbent article, even if the cover sheet on the non-skin side of the absorbent body and the non-woven fabric of the waist are provided with a plurality of holes at the joint between the absorbent body and the waistline. By sandwiching at least one non-perforated sheet member between them, the joint strength between the waist circumference portion and the absorbent main body can be increased.
　かかる吸収性物品であって、前記カバーシート、及び、前記不織布のうちの少なくとも一方は、所定ピッチで開孔が並ぶ開孔領域と、開孔が存在しない非開孔領域を備え、前記非開孔領域は、所定方向に沿い、且つ、前記所定方向と直交する方向の幅が前記所定ピッチよりも広い領域を有することが望ましい。 In such an absorbent article, at least one of the cover sheet and the non-woven fabric has an open region in which openings are lined up at a predetermined pitch and a non-open region in which no open is present, and the non-open region is provided. It is desirable that the hole region has a region in which the width in the direction orthogonal to the predetermined direction is wider than the predetermined pitch along the predetermined direction.
　このような吸収性物品によれば、非開孔領域を設けることによって接合面積が増えるので、接合強度をより高めることができる。 According to such an absorbent article, the joining area is increased by providing the non-perforated region, so that the joining strength can be further increased.
　かかる吸収性物品であって、前記吸収性本体は、前記腹側胴回り部及び前記背側胴回り部とホットメルト接着剤で接合されており、前記ホットメルト接着剤は、面状に塗布されているとともに、前記開孔領域と、前記非開孔領域とを跨いでいることが望ましい。 In such an absorbent article, the absorbent body is joined to the ventral waist circumference portion and the dorsal waist circumference portion with a hot melt adhesive, and the hot melt adhesive is applied in a planar shape. At the same time, it is desirable that the open area and the non-open area are straddled.
　このような吸収性物品によれば、胴回り部（腹側胴回り部及び背側胴回り部）と吸収性本体との接合強度を高めることができる。 According to such an absorbent article, the joint strength between the waist circumference (ventral waist circumference and dorsal waist circumference) and the absorbent body can be increased.
　かかる吸収性物品であって、前記非開孔領域は、前記カバーシートと前記不織布の両方に設けられており、前記厚さ方向において、前記カバーシートの前記非開孔領域と、前記不織布の前記非開孔領域の少なくとも一部が重なっていることが望ましい。 In such an absorbent article, the non-perforated region is provided on both the cover sheet and the non-woven fabric, and in the thickness direction, the non-perforated region of the cover sheet and the non-woven fabric are said. It is desirable that at least part of the non-perforated area overlaps.
　このような吸収性物品によれば、接合強度をさらに高めることができる。 According to such an absorbent article, the bonding strength can be further increased.
　かかる吸収性物品であって、前記非開孔領域は、前記長手方向及び前記左右方向に対して斜めの方向に沿った第１非開孔領域を有していることが望ましい。 It is desirable that the non-perforated region of the absorbent article has a first non-perforated region along the longitudinal direction and the diagonal direction with respect to the left-right direction.
　このような吸収性物品によれば、長手方向及び左右方向への引っ張り等に対する強度を高めることができる。これにより、例えば、吸収性物品を引き上げる際に破れにくくなる。 According to such an absorbent article, it is possible to increase the strength against pulling in the longitudinal direction and the lateral direction. This makes it less likely to tear, for example, when pulling up an absorbent article.
　かかる吸収性物品であって、前記非開孔領域は、前記斜めの方向と交差する方向に沿った第２非開孔領域を有し、前記第１非開孔領域と前記第２非開孔領域は、前記開孔領域を囲む格子状に形成されていることが望ましい。 In such an absorbent article, the non-opening region has a second non-opening region along a direction intersecting the diagonal direction, and the first non-opening region and the second non-opening region. It is desirable that the regions are formed in a grid pattern surrounding the perforated region.
　このような吸収性物品によれば、開孔領域を非開孔領域が囲むことにより、開孔があることによる開孔領域の部分の資材の弱さを非開孔領域が補うことができる。 According to such an absorbent article, by surrounding the perforated region with the non-perforated region, the non-perforated region can compensate for the weakness of the material in the portion of the perforated region due to the presence of the perforated region.
　かかる吸収性物品であって、前記不織布と前記シート部材の間には、前記左右方向に沿った弾性部材が設けられており、前記弾性部材は、前記左右方向の中央に不連続領域を有し、前記カバーシートは、前記不連続領域よりも前記左右方向の外側において、前記弾性部材と重なる部位に、前記非開孔領域の少なくとも一部を有することが望ましい。 In such an absorbent article, an elastic member along the left-right direction is provided between the non-woven fabric and the sheet member, and the elastic member has a discontinuous region in the center in the left-right direction. It is desirable that the cover sheet has at least a part of the non-perforated region at a portion overlapping with the elastic member on the outside of the discontinuous region in the left-right direction.
　このような吸収性物品によれば、接合部分のうち、弾性部材とカバーシートが重なる部位の領域は、弾性部材の弾性力によって資材が伸び縮みするため、剥がれやすい。よって当該部位の接着強度を上げる為、当該領域のカバーシートを非開孔にして接合面積を増やすことで、接合強度を高めることができる。 According to such an absorbent article, the region of the joint portion where the elastic member and the cover sheet overlap is easily peeled off because the material expands and contracts due to the elastic force of the elastic member. Therefore, in order to increase the adhesive strength of the portion, the bonding strength can be increased by increasing the bonding area by making the cover sheet of the region non-perforated.
　かかる吸収性物品であって、前記腹側胴回り部と前記背側胴回り部と前記吸収性本体とによって一対の脚周り開口が形成されており、前記不織布は、前記脚周り開口側の端部に前記開孔領域の少なくとも一部を有し、前記カバーシートは、前記脚周り開口側の端部に前記非開孔領域の少なくとも一部を有することが望ましい。 In such an absorbent article, a pair of leg circumference openings are formed by the ventral waist circumference portion, the dorsal waist circumference portion, and the absorbent body, and the non-woven fabric is provided at the end portion on the leg circumference opening side. It is desirable that the cover sheet has at least a part of the perforated area, and the cover sheet has at least a part of the non-perforated area at the end on the opening side around the leg.
　このような吸収性物品によれば、脚周り開口の下側部分が非開孔となるため、漏れを抑制でき、脚周り開口の上側部分は開孔が存在することで柔らかくなり通気性も良くなることができる。 According to such an absorbent article, since the lower part of the leg circumference opening is non-opening, leakage can be suppressed, and the upper portion of the leg circumference opening is softened by the presence of the opening and has good ventilation. Can be
　かかる吸収性物品であって、前記不織布の前記厚さ方向の非肌側には、前記吸収性物品を廃棄する際に前記吸収性物品を丸めた状態に保持するためのテープ部材が接合されており、前記不織布は、前記テープ部材との接合領域の少なくとも一部に前記非開孔領域を有することが望ましい。 A tape member for holding the absorbent article in a rolled state when the absorbent article is discarded is bonded to the non-skin side of the non-woven fabric in the thickness direction of the absorbent article. It is desirable that the non-woven fabric has the non-perforated region in at least a part of the bonding region with the tape member.
　このような吸収性物品によれば、テープ部材を剥がす際に、不織布が破れることを抑制できる。 According to such an absorbent article, it is possible to prevent the non-woven fabric from being torn when the tape member is peeled off.
　かかる吸収性物品であって、前記厚さ方向において、前記テープ部材と前記不織布との接合領域と、前記不織布と前記シート部材との接合領域とが少なくとも一部重なっていることが望ましい。 It is desirable that at least a part of the bonding region between the tape member and the non-woven fabric and the bonding region between the non-woven fabric and the sheet member overlap in the thickness direction of the absorbent article.
　このような吸収性物品によれば、テープ部材を剥がす際に、不織布のみが引っ張られないため、不織布が破れにくく、また、テープ部材を剥がしやすい。 According to such an absorbent article, when the tape member is peeled off, only the non-woven fabric is not pulled, so that the non-woven fabric is not easily torn and the tape member is easily peeled off.
　かかる吸収性物品であって、前記不織布と前記シート部材との接合領域は、前記テープ部材を前記左右方向に跨いでいることが望ましい。 It is desirable that the bonding region between the non-woven fabric and the sheet member of the absorbent article straddles the tape member in the left-right direction.
　このような吸収性物品によれば、テープ部材の引っ張る力に抗うように、不織布とシート部材との接合領域を後処理テープの左右方向に跨がせることで、（テープ部材周辺の）開孔部から不織布が破れるのを抑制できる。 According to such an absorbent article, a hole (around the tape member) is opened by straddling the bonding region between the non-woven fabric and the sheet member in the left-right direction of the post-treatment tape so as to resist the pulling force of the tape member. It is possible to prevent the non-woven fabric from tearing from the portion.
　かかる吸収性物品であって、前記吸収性本体は、前記カバーシートよりも前記厚さ方向の肌側に、図柄を有するインナーシートをさらに備え、前記シート部材の単位面積当たりの重量が、前記不織布の単位面積当たりの重量よりも小さいことが望ましい。 In the absorbent article, the absorbent body further includes an inner sheet having a pattern on the skin side in the thickness direction of the cover sheet, and the weight per unit area of the sheet member is the non-woven fabric. It is desirable that it is less than the weight per unit area of.
　このような吸収性物品によれば、インナーシートの図柄を視認しやすくなる。 According to such an absorbent article, the design of the inner sheet becomes easy to see.
＝＝＝実施形態＝＝＝
　以下、本発明に係る吸収性物品として、乳幼児向けのパンツ型の使い捨ておむつを例に挙げて実施形態を説明する。但し上記に限定されず、本発明に係る吸収性物品は、大人向けの使い捨ておむつ、ショーツ型の生理用ナプキン等にも適用可能である。 === Embodiment ===
Hereinafter, embodiments will be described with reference to a pants-type disposable diaper for infants as an absorbent article according to the present invention. However, the present invention is not limited to the above, and the absorbent article according to the present invention can also be applied to disposable diapers for adults, shorts-type sanitary napkins, and the like.
＜使い捨ておむつ１の構成＞
　図１は、使い捨ておむつ１（以下「おむつ１」）の概略斜視図である。図２は、展開且つ伸長状態のおむつ１を肌側から見た概略平面図である。図３は、展開且つ伸長状態のおむつ１を非肌側から見た概略平面図である。図４は、図２のＡ－Ａ線の概略断面図である。図４において、複数の開孔（後述する開孔４０）を有する資材については破線で示し、非開孔の資材については実線で示している。 <Composition of disposable diaper 1>
FIG. 1 is a schematic perspective view of a disposable diaper 1 (hereinafter referred to as “diaper 1”). FIG. 2 is a schematic plan view of the unfolded and stretched diaper 1 as viewed from the skin side. FIG. 3 is a schematic plan view of the unfolded and stretched diaper 1 as viewed from the non-skin side. FIG. 4 is a schematic cross-sectional view taken along the line AA of FIG. In FIG. 4, a material having a plurality of openings (opening 40 described later) is shown by a broken line, and a material having no holes is shown by a solid line.
　ここで、上述の「展開状態」とは、おむつ１の左右方向における、腹側部（後述する腹側胴回り部２０）の両端部と、背側部（後述する背側胴回り部３０）の両端部との接合を解き、腹側部と背側部とを分離するとともに、おむつ１をその長手方向に開くことで、おむつ１を平面上に展開した状態のことである。また、おむつ１の「伸長状態」とは、おむつ１全体（製品全体）を皺なく伸長させた状態、具体的には、おむつ１を構成する各部材（例えば、後述する吸収性本体１０や胴回り部２０，３０等）の寸法がその部材単体の寸法と一致又はそれに近い寸法になるまで伸長させた状態のことを言う。 Here, the above-mentioned "deployed state" refers to both ends of the ventral side portion (ventral waist circumference portion 20 described later) and both ends of the dorsal side portion (dorsal waist circumference portion 30 described later) in the left-right direction of the diaper 1. It is a state in which the diaper 1 is developed on a plane by breaking the connection with the portion, separating the ventral portion and the dorsal portion, and opening the diaper 1 in the longitudinal direction thereof. Further, the "extended state" of the diaper 1 is a state in which the entire diaper 1 (the entire product) is extended without wrinkles, specifically, each member constituting the diaper 1 (for example, the absorbent body 10 and the waist circumference described later). It refers to a state in which the dimensions of the parts (20, 30 and the like) are extended until they match or are close to the dimensions of the individual member.
　おむつ１は、パンツ型状態（図１）において、互いに交差する上下方向と左右方向と前後方向とを有している。同おむつ１は、所謂３ピースタイプであり、着用者の股間部にあてがわれ排泄液等の液体を吸収する吸収性本体１０と、同着用者の胴回りを覆う外装体２とを有する。外装体２は、腹側胴回り部２０と背側胴回り部３０とを有している。また、おむつ１には、吸収性本体１０と腹側胴回り部２０と背側胴回り部３０とによって、胴周り開口ＢＨ及び一対の脚周り開口ＬＨが形成されている。上下方向の上側が胴周り開口ＢＨ側に対応し、下側が股間部側に対応する。また、前後方向の前側が着用者の腹側に対応し、後側が着用者の背側に対応する。 The diaper 1 has a vertical direction, a horizontal direction, and a front-rear direction that intersect each other in the pants type state (FIG. 1). The diaper 1 is a so-called three-piece type, and has an absorbent main body 10 that is applied to the crotch portion of the wearer and absorbs a liquid such as excrement, and an exterior body 2 that covers the waist circumference of the wearer. The exterior body 2 has a ventral waist circumference portion 20 and a dorsal waist circumference portion 30. Further, in the diaper 1, a waist circumference opening BH and a pair of leg circumference openings LH are formed by the absorbent main body 10, the ventral waist circumference portion 20, and the dorsal waist circumference portion 30. The upper side in the vertical direction corresponds to the waist opening BH side, and the lower side corresponds to the crotch part side. In addition, the front side in the front-rear direction corresponds to the ventral side of the wearer, and the rear side corresponds to the back side of the wearer.
　図２の展開状態において、おむつ１は、互いに交差する長手方向と、左右方向と、厚さ方向とを有する。以下では、この展開状態における長手方向の一方側のことを「腹側」若しくは「前側」とも呼び、長手方向の他方側のことを「背側」若しくは「後側」とも呼ぶ。展開状態の長手方向は、パンツ型状態の上下方向に沿った方向である。また、厚さ方向は、図４に示すように、おむつ１を構成する資材が積層された方向である。厚さ方向において着用者に接する側を肌側とし、その反対側を非肌側とする。 In the unfolded state of FIG. 2, the diaper 1 has a longitudinal direction, a left-right direction, and a thickness direction that intersect each other. Hereinafter, one side in the longitudinal direction in this deployed state is also referred to as "ventral" or "anterior", and the other side in the longitudinal direction is also referred to as "dorsal" or "rear". The longitudinal direction in the unfolded state is the direction along the vertical direction in the pants-shaped state. Further, as shown in FIG. 4, the thickness direction is the direction in which the materials constituting the diaper 1 are laminated. The side in contact with the wearer in the thickness direction is the skin side, and the opposite side is the non-skin side.
　図２の展開状態のおむつ１では、腹側胴回り部２０と、背側胴回り部３０は別体である。展開状態のおむつ１において、腹側胴回り部２０は長手方向の腹側に位置し、背側胴回り部３０は長手方向の背側に位置している。吸収性本体１０は、図２に示されるように平面視略長方形をなし、その長手方向をおむつ１の上下方向に沿わせつつ左右方向の中央に配置されている。そして、吸収性本体１０の長手方向の腹側の端部が腹側胴回り部２０に接合されており、長手方向の背側の端部が背側胴回り部３０に接合されている。この展開状態のおむつ１が、長手方向の略中央部Ｃ１０で二つ折りされ、腹側胴回り部２０と背側胴回り部３０の左右方向の両側部がそれぞれ溶着等で接合されることにより、図１に示すパンツ型状態のおむつ１となる。 In the unfolded diaper 1 of FIG. 2, the ventral waist circumference 20 and the dorsal waist circumference 30 are separate bodies. In the unfolded diaper 1, the ventral waist circumference 20 is located on the ventral side in the longitudinal direction, and the dorsal waist circumference 30 is located on the dorsal side in the longitudinal direction. As shown in FIG. 2, the absorbent main body 10 has a substantially rectangular shape in a plan view, and is arranged in the center in the left-right direction while the longitudinal direction thereof is along the vertical direction of the diaper 1. The ventral end of the absorbent body 10 in the longitudinal direction is joined to the ventral girth portion 20, and the dorsal end in the longitudinal direction is joined to the dorsal girth portion 30. The unfolded diaper 1 is folded in half at the substantially central portion C10 in the longitudinal direction, and the ventral waist circumference portion 20 and the dorsal waist circumference portion 30 are joined by welding or the like in the left-right direction, respectively. It becomes the diaper 1 in the pants type state shown in.
　吸収性本体１０は、尿等の排泄物を吸収する機能を有する部材であり、本実施形態では、吸収性コア１１と、トップシート１２と、バックシート１３と、インナーシート１４と、カバーシート１５を備えている（図４参照）。 The absorbent main body 10 is a member having a function of absorbing excrement such as urine. In the present embodiment, the absorbent core 11, the top sheet 12, the back sheet 13, the inner sheet 14, and the cover sheet 15 (See FIG. 4).
　吸収性コア１１は、パルプ繊維等の液体吸収性繊維を所定形状に成形したものであり、その内部には高吸収性ポリマー（所謂ＳＡＰ）等が混入されている。これにより、吸収性コア１１は、尿等の排泄物を吸収保持する。なお、吸収性コア１１の形状は、図２に示されるような平面視略砂時計形状に限らず、例えば、平面視略矩形形状でもよい。 The absorbent core 11 is formed by molding a liquid absorbent fiber such as pulp fiber into a predetermined shape, and a highly absorbent polymer (so-called SAP) or the like is mixed therein. As a result, the absorbent core 11 absorbs and retains excrement such as urine. The shape of the absorbent core 11 is not limited to the shape of an hourglass in a plan view as shown in FIG. 2, and may be, for example, a substantially rectangular shape in a plan view.
　トップシート１２は、吸収性コア１１よりも大きい平面サイズの液透過性の不織布（例えば、エアスルー不織布やスパンボンド不織布）である。トップシート１２は、吸収性コア１１よりも厚さ方向の肌側に配置され、おむつ１の着用時に着用者の肌と当接する。 The top sheet 12 is a liquid-permeable non-woven fabric having a flat size larger than that of the absorbent core 11 (for example, an air-through non-woven fabric or a spunbonded non-woven fabric). The top sheet 12 is arranged on the skin side in the thickness direction of the absorbent core 11 and comes into contact with the wearer's skin when the diaper 1 is worn.
　バックシート１３（液不透過性シートに相当）は、吸収性本体１０よりも非肌側に配置された液不透過性のシートであり、例えばポリエチレン又はポリプロピレン等の樹脂フィルムによって形成されている。バックシート１３が設けられることによって、吸収性本体１０によって吸収された尿等の水分が着用者の衣服側（非肌側）に移動（浸透）することが抑制される。 The back sheet 13 (corresponding to a liquid-impermeable sheet) is a liquid-impermeable sheet arranged on the non-skin side of the absorbent body 10, and is formed of, for example, a resin film such as polyethylene or polypropylene. By providing the back sheet 13, moisture such as urine absorbed by the absorbent body 10 is suppressed from moving (permeating) to the wearer's clothing side (non-skin side).
　インナーシート１４は、バックシート１３とカバーシート１５との間（換言すると、カバーシート１５よりも肌側）に配置されたシート状の部材であり、例えば、樹脂フィルムや不織布等で形成されている。また、本実施形態のインナーシート１４は非肌側の面に図柄（不図示）を有している。図柄としては、模様、絵、記号、文字などであり、特に限定されない。なお、インナーシート１４は無くても良い。 The inner sheet 14 is a sheet-like member arranged between the back sheet 13 and the cover sheet 15 (in other words, on the skin side of the cover sheet 15), and is formed of, for example, a resin film or a non-woven fabric. .. Further, the inner sheet 14 of the present embodiment has a pattern (not shown) on the surface on the non-skin side. The design includes a pattern, a picture, a symbol, a character, and the like, and is not particularly limited. The inner sheet 14 may be omitted.
　カバーシート１５は、吸収性本体１０の最も非肌側（換言するとバックシート１３よりも非肌側）に配置されたシート状の部材であり、例えば不織布等で形成されている。不織布の素材繊維としては、例えば、ポリプロピレン（ＰＰ）、ポリエチレン（ＰＥ）、ポリエチレンテレフタレート（ＰＥＴ）等が挙げられる。また、ポリプロピレンやポリエチレンなどの単独繊維だけでなく、ポリプロピレンやポリエチレンからなる芯鞘構造の複合繊維（Ｂｉｃｏ）などを使用することも可能である。不織布の態様としては、サーマルボンド不織布、スパンボンド不織布、スパンレース不織布等が挙げられる。なお、本実施形態のカバーシート１５は、複数の開孔４０を有している。これにより、おむつ１における通気性や、内部の資材（具体的にはインナーシート１４）の図柄の視認性の向上などを図ることができる。開孔４０の形成パターン等については後述する。 The cover sheet 15 is a sheet-like member arranged on the most non-skin side (in other words, the non-skin side of the back sheet 13) of the absorbent main body 10, and is formed of, for example, a non-woven fabric. Examples of the material fiber of the non-woven fabric include polypropylene (PP), polyethylene (PE), polyethylene terephthalate (PET) and the like. Further, it is also possible to use not only a single fiber such as polypropylene or polyethylene but also a composite fiber (Bico) having a core-sheath structure made of polypropylene or polyethylene. Examples of the non-woven fabric include thermal-bonded non-woven fabric, spunbonded non-woven fabric, spunlaced non-woven fabric and the like. The cover sheet 15 of the present embodiment has a plurality of openings 40. As a result, it is possible to improve the breathability of the diaper 1 and the visibility of the design of the internal material (specifically, the inner sheet 14). The formation pattern of the opening 40 and the like will be described later.
　腹側胴回り部２０は、着用者の腹側の胴回りを覆う部位であり、厚さ方向において非肌側に配置された不織布２１と、不織布２１よりも肌側に配置された非開孔シート２２（シート部材に相当）と、不織布２１と非開孔シート２２との間に設けられた複数の弾性部材２３を有している。 The ventral waist circumference portion 20 is a portion that covers the waist circumference on the ventral side of the wearer, and is a non-woven fabric 21 arranged on the non-skin side in the thickness direction and a non-perforated sheet 22 arranged on the skin side of the non-woven fabric 21. It has a plurality of elastic members 23 provided between the non-woven fabric 21 and the non-perforated sheet 22 (corresponding to the sheet member).
　同様に、背側胴回り部３０は、着用者の背側の胴回りを覆う部位であり、厚さ方向において非肌側に配置された不織布３１と、不織布３１よりも着用者の肌側に配置された非開孔シート３２（シート部材に相当）と、不織布３１と非開孔シート３２との間に設けられた複数の弾性部材３３を有している。また、背側胴回り部３０の非肌側の面には、後処理テープ３５（テープ部材に相当）が設けられている。 Similarly, the dorsal girth portion 30 is a portion that covers the dorsal girth of the wearer, and is arranged on the non-woven fabric 31 arranged on the non-skin side in the thickness direction and on the skin side of the wearer rather than the non-woven fabric 31. It has a non-perforated sheet 32 (corresponding to a sheet member) and a plurality of elastic members 33 provided between the non-woven fabric 31 and the non-perforated sheet 32. Further, a post-treatment tape 35 (corresponding to a tape member) is provided on the non-skin side surface of the dorsal waist circumference portion 30.
　なお、図４に示すように、腹側胴回り部２０（及び背側胴回り部３０）は、吸収性本体１０の非肌側の面（すなわちカバーシート１５の非肌側の面）に接合されている。この接合部分（以下、接合部ともいう）は、胴回り部（腹側胴回り部２０、背側胴回り部３０）と吸収性本体１０（カバーシート１５）とが、厚さ方向に重なる領域に相当する。 As shown in FIG. 4, the ventral waist circumference 20 (and the dorsal waist circumference 30) are joined to the non-skin side surface of the absorbent body 10 (that is, the non-skin side surface of the cover sheet 15). There is. This joint portion (hereinafter, also referred to as a joint portion) corresponds to a region where the waist circumference portion (ventral waist circumference portion 20, dorsal waist circumference portion 30) and the absorbent main body 10 (cover sheet 15) overlap in the thickness direction. ..
　不織布２１，３１は、カバーシート１５と同様の不織布である。また、不織布２１，３１は、カバーシート１５と同様に、複数の開孔４０を有している。開孔４０のパターン等については後述する。 The non-woven fabrics 21 and 31 are the same non-woven fabrics as the cover sheet 15. Further, the nonwoven fabrics 21 and 31 have a plurality of openings 40 like the cover sheet 15. The pattern of the opening 40 and the like will be described later.
　非開孔シート２２，３２は、開孔が設けられていないシート状の部材であり、不織布２１，３１と同じ素材の不織布などを用いることができる。なお、非開孔シート２２，３２の単位面積当たりの重量（所謂、目付）は、それぞれ、不織布２１，３１の単位面積当たりの重量よりも小さいことが望ましい。ここで、「単位面積当たりの重量（目付）」とは、各不織布について、複数箇所（例えば１０か所）の目付を測定した結果の平均値である。位面積当たりの重量が大きい（繊維量が多い）不織布２１，３１は、開孔４０の縁部では光が透過せず、不織布そのものの色味がはっきりと見え易い。単位面積当たりの重量が小さい（繊維量が少ない）非開孔シート２２，３２は、光を透過させるため透け感がある。そのような不織布２１，３１及び非開孔シート２２，３２が重ね合わされることで、各開孔４０の縁部の色味の濃さと非開孔シート２２，３２の透け感の対比が視覚的効果を生じ、各開孔４０の輪郭がよりはっきりと見えるようになる。そのため、開孔４０が視認しやすくなる。また、非開孔シート２２，３２の透け感により、不織布２１，３１やカバーシート１５の開孔４０を介して、内部の資材（本実施形態ではインナーシート１４）の図柄が視認しやすくなる。 The non-perforated sheets 22 and 32 are sheet-like members having no perforations, and a non-woven fabric or the like made of the same material as the non-woven fabrics 21 and 31 can be used. It is desirable that the weights of the non-perforated sheets 22 and 32 per unit area (so-called basis weight) are smaller than the weights of the non-woven fabrics 21 and 31, respectively. Here, the "weight per unit area (weight)" is an average value of the results of measuring the weights at a plurality of places (for example, 10 places) for each non-woven fabric. The non-woven fabrics 21 and 31 having a large weight per area (large amount of fibers) do not transmit light at the edges of the openings 40, and the color of the non-woven fabric itself can be clearly seen. The non-perforated sheets 22 and 32 having a small weight per unit area (small amount of fibers) transmit light and therefore have a sense of sheerness. By superimposing the non-woven fabrics 21 and 31 and the non-perforated sheets 22 and 32, the contrast between the color depth of the edge of each perforated 40 and the sheer feeling of the non-perforated sheets 22 and 32 is visually observed. The effect is produced and the contour of each opening 40 becomes more clearly visible. Therefore, the opening 40 becomes easy to see. Further, the sheer feeling of the non-perforated sheets 22 and 32 makes it easier to visually recognize the design of the internal material (inner sheet 14 in the present embodiment) through the openings 40 of the non-woven fabrics 21 and 31 and the cover sheet 15.
　複数の弾性部材２３は、弾性を有する糸状の部材であり、不織布２１と非開孔シート２２の間において、上下方向に並んで配置されるとともに、左右方向に伸長した状態で固定されている。また、複数の弾性部材３３は、不織布３１と非開孔シート３２の間において、上下方向に並んで配置されるとともに、左右方向に伸長した状態で固定されている。これにより、腹側胴回り部２０、及び、背側胴回り部３０に、左右方向の伸縮性が付与されている。弾性部材２３，３３としては、糸状のゴムやスパンデックス等を例示できる。なお、吸収性本体１０と厚さ方向に重なる部分には弾性部材２３，３３が不連続となる不連続領域２３ａ，３３ａがそれぞれ設けられている（図２参照）。 The plurality of elastic members 23 are thread-like members having elasticity, and are arranged side by side in the vertical direction between the non-woven fabric 21 and the non-perforated sheet 22, and are fixed in a state of being extended in the horizontal direction. Further, the plurality of elastic members 33 are arranged side by side in the vertical direction between the non-woven fabric 31 and the non-perforated sheet 32, and are fixed in a state of being extended in the horizontal direction. As a result, the ventral waist circumference portion 20 and the dorsal waist circumference portion 30 are provided with elasticity in the left-right direction. Examples of the elastic members 23 and 33 include thread-like rubber and spandex. Discontinuous regions 23a and 33a in which the elastic members 23 and 33 are discontinuous are provided in the portion overlapping the absorbent main body 10 in the thickness direction, respectively (see FIG. 2).
　後処理テープ３５は、使用後のおむつ１を廃棄する際におむつ１を丸めた状態に保持するための部材であり、図３に示すように、背側胴回り部３０の左右方向の中央において、不織布３１の非肌側の面に設けられている。後処理テープ３５の詳細については後述する。 The post-treatment tape 35 is a member for holding the diaper 1 in a rolled state when the used diaper 1 is discarded, and as shown in FIG. 3, at the center of the dorsal waist circumference portion 30 in the left-right direction. It is provided on the non-skin side surface of the non-woven fabric 31. Details of the post-processing tape 35 will be described later.
＜外装体２と吸収性本体１０との接合部の構成＞
　以下、外装体２（腹側胴回り部２０、背側胴回り部３０）と吸収性本体１０との接合部の構成について説明する。なお、ここでは腹側（腹側胴回り部２０と吸収性本体１０）の接合部分について説明するが、背側（背側胴回り部３０と吸収性本体１０）の接合部の構成についても同様である（背側の説明は省略する）。 <Structure of the joint between the exterior body 2 and the absorbent body 10>
Hereinafter, the configuration of the joint portion between the exterior body 2 (ventral waist circumference portion 20, dorsal waist circumference portion 30) and the absorbent main body 10 will be described. Here, the joint portion on the ventral side (ventral waist circumference portion 20 and the absorbent main body 10) will be described, but the same applies to the configuration of the joint portion on the dorsal side (dorsal waist circumference portion 30 and the absorbent main body 10). (The explanation on the back side is omitted).
　図５は、腹側胴回り部２０と吸収性本体１０との接合部（図４においてＸで示す部分）の概略分解斜視図である。図６は、カバーシート１５における開孔４０の開孔パターンを示す拡大図である。 FIG. 5 is a schematic exploded perspective view of the joint portion (the portion indicated by X in FIG. 4) between the ventral waist circumference portion 20 and the absorbent main body 10. FIG. 6 is an enlarged view showing an opening pattern of the opening 40 in the cover sheet 15.
　図５に示すように、カバーシート１５は複数の開孔４０を有している。本実施形態において、開孔４０は円形状の孔であり、カバーシート１５を厚さ方向に貫通している。カバーシート１５が上述したポリプロピレン、ポリエチレン等の熱可塑性樹脂繊維によって構成される場合、開孔４０の形成は、例えば、加熱されたピン部材（不図示）等を使用して行うことが可能である。 As shown in FIG. 5, the cover sheet 15 has a plurality of openings 40. In the present embodiment, the opening 40 is a circular hole and penetrates the cover sheet 15 in the thickness direction. When the cover sheet 15 is made of the above-mentioned thermoplastic resin fiber such as polypropylene or polyethylene, the opening 40 can be formed by using, for example, a heated pin member (not shown). ..
　また、腹側胴回り部２０の不織布２１も複数の開孔４０を有している。 Further, the non-woven fabric 21 of the ventral waist circumference 20 also has a plurality of openings 40.
　仮に、複数の開孔４０を有する不織布２１と、複数の開孔４０を有するカバーシート１５を直接接合した場合（例えば、腹側胴回り部２０の最も肌側に不織布２１を配置した場合）、両方のシートに開孔４０があるため、接合面積が少なくなり、接合の強度が低下するおそれがある。特に、おむつ１では、外装体２（ここでは腹側胴回り部２０）と吸収性本体１０との接合部の強度が品質において重要である。 If the non-woven fabric 21 having a plurality of openings 40 and the cover sheet 15 having a plurality of openings 40 are directly joined (for example, when the non-woven fabric 21 is arranged on the skinmost side of the ventral waist circumference 20), both Since the sheet has holes 40, the bonding area may be reduced and the bonding strength may be reduced. In particular, in the diaper 1, the strength of the joint between the exterior body 2 (here, the ventral waist circumference 20) and the absorbent body 10 is important in terms of quality.
　そこで、本実施形態では、厚さ方向において不織布２１とカバーシート１５との間に、非開孔シート２２を配置している。より具体的には、腹側胴回り部２０を、不織布２１と非開孔シート２２の２枚のシートで形成するとともに、不織布２１よりも肌側に非開孔シート２２を配置している。こうすることにより、吸収性本体１０と腹側胴回り部２０とを接合する際には、複数の開孔４０を有する不織布２１と複数の開孔４０を有するカバーシート１５が、非開孔シート２２を介して接合されることになる。 Therefore, in the present embodiment, the non-perforated sheet 22 is arranged between the non-woven fabric 21 and the cover sheet 15 in the thickness direction. More specifically, the ventral waist circumference 20 is formed of two sheets, a non-woven fabric 21 and a non-perforated sheet 22, and the non-perforated sheet 22 is arranged on the skin side of the non-woven fabric 21. By doing so, when the absorbent main body 10 and the ventral waist circumference portion 20 are joined, the non-woven fabric 21 having a plurality of openings 40 and the cover sheet 15 having a plurality of openings 40 make the non-perforated sheet 22. It will be joined through.
　このような構成とすることにより、不織布２１とカバーシート１５を直接接合する場合と比べて、接合部分の面積が多くなるので、吸収性本体１０と腹側胴回り部２０との接合強度を高めることができる。なお、本実施形態においてカバーシート１５の開孔４０は円形状であるが、これには限定されず、種々の形状（例えば楕円形状）であってもよい。不織布２１や不織布３１の開孔４０についても同様である。 With such a configuration, the area of the joint portion is larger than that in the case where the non-woven fabric 21 and the cover sheet 15 are directly joined, so that the joint strength between the absorbent main body 10 and the ventral waist circumference portion 20 can be increased. it can. In the present embodiment, the opening 40 of the cover sheet 15 has a circular shape, but is not limited to this, and may have various shapes (for example, an elliptical shape). The same applies to the openings 40 of the non-woven fabric 21 and the non-woven fabric 31.
　また、図５及び図６に示すようにカバーシート１５は、開孔領域１５ａと非開孔領域１５ｂを備えている。 Further, as shown in FIGS. 5 and 6, the cover sheet 15 includes a perforated region 15a and a non-perforated region 15b.
　開孔領域１５ａは、複数の開孔４０が所定ピッチで並ぶ領域である。本実施形態では、開孔領域１５ａの開孔４０は、図６に示すＲ方向及びＲ´方向に、それぞれ、ピッチｄ１で並んでいる。なお、Ｒ方向は、長手方向及び左右方向に対して斜めの方向であり、Ｒ´方向は、Ｒ方向と交差（本実施形態では直交）する方向である。ここで、仮に、複数の開孔４０がランダムに形成されていると、おむつ１の引き上げ時に力が分散するので引き上げにくくなる。本実施形態では、複数の開孔４０が規則正しく配置されているので、力が分散せず、引き上げやすい。 The opening area 15a is an area in which a plurality of opening 40s are lined up at a predetermined pitch. In the present embodiment, the openings 40 of the opening region 15a are arranged at a pitch d1 in the R direction and the R'direction shown in FIG. 6, respectively. The R direction is an oblique direction with respect to the longitudinal direction and the left-right direction, and the R'direction is a direction intersecting the R direction (orthogonal in the present embodiment). Here, if a plurality of openings 40 are randomly formed, the force is dispersed when the diaper 1 is pulled up, which makes it difficult to pull up the diaper 1. In the present embodiment, since the plurality of openings 40 are regularly arranged, the force is not dispersed and it is easy to pull up.
　非開孔領域１５ｂは、開孔の存在しない領域である。本実施形態において、非開孔領域１５ｂは、第１非開孔領域１５ｂ１と第２非開孔領域１５ｂ２を有している。図６に示すように、第１非開孔領域１５ｂ１は、Ｒ方向に沿い、且つ、Ｒ´方向の幅（ｄ２）がピッチｄ１よりも広い領域である。また、第２非開孔領域１５ｂ２は、Ｒ´方向（Ｒ方向と交差する方向）に沿い、且つ、Ｒ方向の幅（ｄ２）がピッチｄ１よりも広い領域である。 The non-perforated region 15b is a region where no perforation exists. In the present embodiment, the non-opening region 15b has a first non-opening region 15b 1 and a second non-opening region 15b 2 . As shown in FIG. 6, the first non-opening region 15b 1 is a region along the R direction and having a width (d2) in the R'direction wider than the pitch d1. Further, the second non-opening region 15b 2 is a region along the R'direction (direction intersecting the R direction) and having a width (d2) in the R direction wider than the pitch d1.
　このような非開孔領域１５ｂ（第１非開孔領域１５ｂ１、第２非開孔領域１５ｂ２）を設けることによって、全てが開孔領域１５ａである場合と比べて、接合面積が増えるので、接合強度をより高めることができる。 By providing such a non-perforated region 15b (first non-perforated region 15b 1 , second non-perforated region 15b 2 ), the joint area is increased as compared with the case where all of them are the open region 15a. , The joint strength can be further increased.
　また、仮に、非開孔領域１５ｂを長手方向に沿って設けた場合、おむつ１の引き上げ時に開孔４０の並ぶ長手方向の資材強度が弱くなっているため、開孔領域１５ａと非開孔領域１５ｂの境界部分で破れが発生しやすい。これに対し、本実施形態の非開孔領域１５ｂは、長手方向及び左右方向に対して斜めの方向に沿った領域（第１非開孔領域１５ｂ１、第２非開孔領域１５ｂ２）を有している。これにより長手方向及び左右方向への引っ張り等に対する強度を高めることができる。例えば、おむつ１を引き上げる際に破れにくくなる。 Further, if the non-perforated region 15b is provided along the longitudinal direction, the strength of the material in the longitudinal direction in which the perforations 40 are lined up is weakened when the diaper 1 is pulled up, so that the perforated region 15a and the non-perforated region 15a Tear is likely to occur at the boundary portion of 15b. On the other hand, the non-perforated region 15b of the present embodiment is a region (first non-perforated region 15b 1 , second non-perforated region 15b 2 ) along the direction oblique to the longitudinal direction and the left-right direction. Have. As a result, the strength against tension in the longitudinal direction and the lateral direction can be increased. For example, it becomes difficult to tear when pulling up the diaper 1.
　また、本実施形態の第１非開孔領域１５ｂ１と第２非開孔領域１５ｂ２は、開孔領域１５ａを囲む格子状に形成されている。これにより、開孔４０が存在することによる開孔領域１５ａの部分の資材の弱さを、非開孔領域１５ｂ（第１非開孔領域１５ｂ１及び第２非開孔領域１５ｂ２）が補うことができる。 Further, the first non-opening region 15b 1 and the second non-opening region 15b 2 of the present embodiment are formed in a grid pattern surrounding the open region 15a. As a result, the non-opening region 15b (first non-opening region 15b 1 and second non-opening region 15b 2 ) compensates for the weakness of the material in the portion of the perforated region 15a due to the presence of the perforated 40. be able to.
　なお、本実施形態では、開孔領域１５ａが略正方形となるように、第１非開孔領域１５ｂ１及び第２非開孔領域１５ｂ２が設けられているが、これには限られない。例えば、開孔領域１５ａが略長方形となるように第１非開孔領域１５ｂ１及び第２非開孔領域１５ｂ２が設けられていてもよい。また、本実施形態では、第１非開孔領域１５ｂ１と第２非開孔領域１５ｂ２は直交しているが、交差していればよい（直交していなくてもよい）。例えば、開孔領域１５ａの形状が菱形になるように、第１非開孔領域１５ｂ１及び第２非開孔領域１５ｂ２が設けられていてもよい。 In the present embodiment, the first non-opening region 15b 1 and the second non-opening region 15b 2 are provided so that the perforated region 15a is substantially square, but the present invention is not limited to this. For example, the first non-opening region 15b 1 and the second non-opening region 15b 2 may be provided so that the perforated region 15a is substantially rectangular. Further, in the present embodiment, the first non-perforated region 15b 1 and the second non-perforated region 15b 2 are orthogonal to each other, but may intersect each other (they may not be orthogonal to each other). For example, the first non-opening region 15b 1 and the second non-opening region 15b 2 may be provided so that the shape of the perforated region 15a becomes a rhombus.
　吸収性本体１０と腹側胴回り部２０と（具体的には、カバーシート１５と非開孔シート２２）はホットメルト接着剤で接合されている。ホットメルト接着剤としては、例えば、ＥＶＡ系、エラストマー系、オレフィン系、ポリエステル・ポリアミド系などを使用できる。ホットメルト接着剤の塗布方法としては、螺旋状に塗布できるスパイラル塗工、波状に塗布できるオメガ塗工やコントロールシーム塗工等の公知の塗布方法を例示できる。 The absorbent body 10 and the ventral waist circumference 20 (specifically, the cover sheet 15 and the non-perforated sheet 22) are joined with a hot melt adhesive. As the hot melt adhesive, for example, EVA type, elastomer type, olefin type, polyester / polyamide type and the like can be used. Examples of the hot melt adhesive coating method include known coating methods such as spiral coating that can be applied in a spiral shape, omega coating that can be applied in a wavy shape, and control seam coating.
　本実施形態では、吸収性本体１０と腹側胴回り部２０との接合部（カバーシート１５と非開孔シート２２の接合面）において、ホットメルト接着剤は、ストットコーター方式等によって面状に塗布されおり、開孔領域１５ａと、非開孔領域１５ｂ（第１非開孔領域１５ｂ１及び第２非開孔領域１５ｂ２）を跨いでいる。これにより、外装体２（ここでは腹側胴回り部２０）と吸収性本体１０との接合強度を高めることができる。なお、本実施形態では、不織布２１（３１）と非開孔シート２２（３２）は、弾性部材２３（３３）の周囲に塗布されたホットメルト接着剤で接合されている（図８参照）。但し、これには限られず、弾性部材２３、３３とは別の位置にホットメルト接着剤を塗布して接合してもよい。 In the present embodiment, the hot melt adhesive is applied in a surface shape at the joint portion between the absorbent main body 10 and the ventral waist circumference portion (the joint surface between the cover sheet 15 and the non-perforated sheet 22) by a stot coater method or the like. It straddles the open region 15a and the non-open region 15b (first non-open region 15b 1 and second non-open region 15b 2 ). As a result, the joint strength between the exterior body 2 (here, the ventral waist circumference 20) and the absorbent body 10 can be increased. In the present embodiment, the non-woven fabric 21 (31) and the non-perforated sheet 22 (32) are joined with a hot melt adhesive applied around the elastic member 23 (33) (see FIG. 8). However, the present invention is not limited to this, and a hot melt adhesive may be applied to a position different from the elastic members 23 and 33 for joining.
　また、腹側胴回り部２０の不織布２１も、カバーシート１５と同じパターンで複数の開孔４０が設けられている。すなわち、不織布２１は、複数の開孔４０がピッチｄ１で並ぶ開孔領域２１ａと、開孔が存在しない非開孔領域２１ｂを備えている。また非開孔領域２１ｂは、格子状に形成された第１非開孔領域２１ｂ１と第２非開孔領域２１ｂ２を有している。そして、厚さ方向において、カバーシート１５の非開孔領域１５ｂと不織布２１の非開孔領域２１ｂは、非開孔シート２２を挟んだ状態で重なっている。これにより、腹側胴回り部２０と吸収体１０との接合強度を更に高めることができる。なお、本実施形態では、非開孔領域１５ｂと非開孔領域２１ｂが厚さ方向に完全に重なることとしているが、これには限られず、各非開孔領域の少なくとも一部が重なっていればよい（例えば、左右方向や長手方向にずれて配置されていても良い）。これにより、非開孔領域同士が厚さ方向に重ならない場合と比べて、接続強度を高めることができる。また、本実施形態では、不織布２１の複数の開孔４０の開孔パターン（開孔領域２１ａ、非開孔領域２１ｂ）と、カバーシート１５の複数の開孔４０の開孔パターン（開孔領域１５ａ、非開孔領域１５ｂ）が同じであるが、異なっていてもよい。 Further, the non-woven fabric 21 of the ventral waist circumference 20 is also provided with a plurality of openings 40 in the same pattern as the cover sheet 15. That is, the non-woven fabric 21 includes an opening region 21a in which a plurality of openings 40 are lined up at a pitch d1 and a non-opening region 21b in which no openings exist. Further, the non-opening region 21b has a first non-opening region 21b 1 and a second non-opening region 21b 2 formed in a grid pattern. Then, in the thickness direction, the non-perforated region 15b of the cover sheet 15 and the non-perforated region 21b of the non-woven fabric 21 overlap each other with the non-perforated sheet 22 sandwiched between them. As a result, the joint strength between the ventral waist circumference 20 and the absorber 10 can be further increased. In the present embodiment, the non-perforated region 15b and the non-perforated region 21b are completely overlapped in the thickness direction, but the present invention is not limited to this, and at least a part of each non-opening region is overlapped. (For example, they may be arranged so as to be offset in the left-right direction or the longitudinal direction). As a result, the connection strength can be increased as compared with the case where the non-opened regions do not overlap each other in the thickness direction. Further, in the present embodiment, the opening patterns of the plurality of openings 40 of the non-woven fabric 21 (opening regions 21a, non-opening regions 21b) and the opening patterns of the plurality of openings 40 of the cover sheet 15 (opening regions). 15a, non-woven area 15b) are the same, but may be different.
　背側胴回り部３０側の構成（背側胴回り部３０と吸収性本体１０との接合部）についても同様であり、背側胴回り部３０の不織布３１にも、カバーシート１５のパターンと同じパターンで複数の開孔４０が設けられている。すなわち、不織布３１は、複数の開孔４０がピッチｄ１で並ぶ開孔領域３１ａと、開孔４０が存在しない非開孔領域３１ｂを備えている。また、非開孔領域３１ｂは、格子状に形成された第１非開孔領域３１ｂ１、第２非開孔領域３１ｂ２を有している。そして、厚さ方向において、カバーシート１５の非開孔領域１５ｂと不織布３１の非開孔領域３１ｂは、非開孔シート３２を挟んだ状態で重なっている。これにより、背側胴回り部３０と吸収体１０との接合強度を高めることができる。 The same applies to the configuration on the back side waist circumference 30 side (the joint portion between the back side waist circumference portion 30 and the absorbent body 10), and the non-woven fabric 31 of the back side waist circumference portion 30 has the same pattern as the cover sheet 15. A plurality of openings 40 are provided. That is, the non-woven fabric 31 includes an opening region 31a in which a plurality of openings 40 are lined up at a pitch d1 and a non-opening region 31b in which the openings 40 do not exist. Further, the non-opening region 31b has a first non-opening region 31b 1 and a second non-opening region 31b 2 formed in a grid pattern. Then, in the thickness direction, the non-perforated region 15b of the cover sheet 15 and the non-perforated region 31b of the non-woven fabric 31 overlap each other with the non-perforated sheet 32 sandwiched between them. As a result, the joint strength between the dorsal waist circumference portion 30 and the absorber 10 can be increased.
　また、吸収性本体１０のカバーシート１５は、胴回り部（腹側胴回り部２０、背側胴回り部３０）の弾性部材２３，３３の不連続領域２３ａ，３３ａの左右方向の外側において、弾性部材２３，３３の有効長と厚さ方向に重なる部位の領域（図３においてＹで示す範囲の領域）に非開孔領域１５ｂの少なくとも一部を有している（好ましくは、この領域全体が非開孔領域１５ｂである）。ここで、弾性部材２３，３３の有効長とは、弾性部材２３，３３に左右方向に収縮する力が働く領域のことである。 Further, the cover sheet 15 of the absorbent main body 10 is provided on the outer side of the discontinuous regions 23a and 33a of the elastic members 23 and 33 of the waist circumference portion (ventral waist circumference portion 20 and dorsal waist circumference portion 30) in the left-right direction. , 33 has at least a part of the non-perforated region 15b in the region (the region in the range indicated by Y in FIG. 3) that overlaps with the effective length in the thickness direction (preferably, the entire region is non-open). Hole region 15b). Here, the effective length of the elastic members 23 and 33 is a region in which a force for contracting the elastic members 23 and 33 acts in the left-right direction.
　接合部分のうち、この領域は、弾性部材２２，２３の弾性力によって資材が伸び縮みするため、剥がれやすい。よって、当該部位の接着強度を上げる為、当該領域のカバーシート１５を非開孔にして接合面積を増やすことで、接合強度を高めることができる。 Of the jointed portion, this region is easily peeled off because the material expands and contracts due to the elastic force of the elastic members 22 and 23. Therefore, in order to increase the adhesive strength of the portion, the bonding strength can be increased by increasing the bonding area by making the cover sheet 15 of the region non-perforated.
　また、吸収性本体１０のカバーシート１５は、一対の脚周り開口ＬＨ側の端部（図３においてＴＡで示す部分）にも非開孔領域１５ｂの少なくとも一部を有している。一方、胴回り部（腹側胴回り部２０、背側胴回り部３０）の不織布２１，３１は、一対の脚周り開口ＬＨ側の端部（図３においてＴＢで示す部分）に開孔領域２１ａ、開孔領域３１ａの少なくとも一部を有している。 Further, the cover sheet 15 of the absorbent main body 10 also has at least a part of the non-opening region 15b at the end portion (the portion indicated by TA in FIG. 3) on the LH side of the pair of leg circumference openings. On the other hand, the non-woven fabrics 21 and 31 of the waist circumference portion (ventral waist circumference portion 20 and dorsal waist circumference portion 30) have an opening region 21a at the end portion (the portion indicated by TB in FIG. 3) on the LH side of the pair of leg circumference openings. It has at least a part of the hole region 31a.
　これにより、脚周り開口ＬＨのうちの下側部分（図３のＴＡの部分）が非開孔となるため、漏れを抑制でき、脚周り開口ＬＨのうちの上側部分（図３のＴＢの部分）は複数の開孔４０が存在することで柔らかくなり通気性も良くなる。 As a result, the lower portion of the leg circumference opening LH (the portion of TA in FIG. 3) becomes a non-open hole, so that leakage can be suppressed, and the upper portion of the leg circumference opening LH (the portion of TB in FIG. 3) can be suppressed. ) Is softened by the presence of a plurality of openings 40, and the air permeability is also improved.
＜後処理テープ３５について＞
　前述したように、背側胴回り部３０の非肌側の面には後処理テープ３５が設けられている。 <About post-processing tape 35>
As described above, the post-treatment tape 35 is provided on the non-skin side surface of the dorsal waist circumference portion 30.
　図７は、展開状態の後処理テープ３５の概略斜視図であり、図８は、図３のＢ－Ｂ概略断面である。なお、図８では吸収性本体１０の図示を省略している。 FIG. 7 is a schematic perspective view of the post-processing tape 35 in the unfolded state, and FIG. 8 is a schematic cross section of BB of FIG. Note that FIG. 8 omits the illustration of the absorbent body 10.
　後処理テープ３５は、テープ本体３５ａと、支持部３５ｂと、摘まみ部３５ｃを有している。 The post-treatment tape 35 has a tape body 35a, a support portion 35b, and a knob portion 35c.
　テープ本体３５ａは、細長い帯状の部材である。おむつ１に設けられたテープ本体３５ａは、図８に示すように、長手方向に折り畳まれた状態となっている。すなわち、折り畳まれた状態のテープ本体３５ａにおいて、互いに対向する面（支持部３５ｂに対向する面も含む）における少なくとも一部には剥離可能な粘着強度の粘着層（不図示）が設けられていて、これにより、テープ本体３５ａは、折り畳まれた状態に仮固定されている。 The tape body 35a is an elongated strip-shaped member. As shown in FIG. 8, the tape main body 35a provided on the diaper 1 is in a state of being folded in the longitudinal direction. That is, in the folded tape body 35a, at least a part of the surfaces facing each other (including the surface facing the support portion 35b) is provided with a peelable adhesive layer (not shown). As a result, the tape body 35a is temporarily fixed in the folded state.
　支持部３５ｂは、テープ本体３５を支持する部位であり、本実施形態では、テープ本体３５ａの端部において二股（テープ本体３５ａの表裏方向）に分岐した部位である。換言すると、支持部３５ｂの両端の間にテープ本体３５ａの一端が接続されている。また、図８に示すように、テープ本体３５ａとは反対側の支持部３５ｂの面は、背側胴回り部３０の非肌側の面（すなわち不織布３１の非肌側の面）に、ホットメルト接着剤等で剥離不能に固定（接合）されている。これにより、後処理テープ３５（支持部３５ｂ）と、不織布３１との間に接合領域３６が形成されている。 The support portion 35b is a portion that supports the tape main body 35, and in the present embodiment, is a portion that is bifurcated (front and back directions of the tape main body 35a) at the end portion of the tape main body 35a. In other words, one end of the tape body 35a is connected between both ends of the support portion 35b. Further, as shown in FIG. 8, the surface of the support portion 35b opposite to the tape body 35a is hot-melted on the non-skin side surface of the dorsal waist circumference portion 30 (that is, the non-skin side surface of the non-woven fabric 31). It is fixed (joined) so that it cannot be peeled off with an adhesive or the like. As a result, the bonding region 36 is formed between the post-treatment tape 35 (support portion 35b) and the non-woven fabric 31.
　摘まみ部３５ｃは、後処理テープ３５（テープ本体３５ａ）を引き剥がす際に指で把持する部位であり、テープ本体３５ａにおいて支持部３５ｂとは反対側の端部に設けられている。 The knob portion 35c is a portion to be gripped by a finger when the post-processing tape 35 (tape body 35a) is peeled off, and is provided at an end portion of the tape body 35a opposite to the support portion 35b.
　かかる後処理テープ３５の各部材の素材としては、ポリエチレンやポリプロピレン等の樹脂素材を例示できるが、何等これに限らない。例えば、紙等のパルプ素材でも良い。 Examples of the material of each member of the post-treatment tape 35 include resin materials such as polyethylene and polypropylene, but the material is not limited to this. For example, a pulp material such as paper may be used.
　図９Ａ～図９Ｃは、後処理テープ３５を引き剥がすときの様子を示す概略図である。 9A to 9C are schematic views showing a state when the post-treatment tape 35 is peeled off.
　使用後のおむつ１を廃棄する際には、摘まみ部３５ｃを摘まんで支持部３５ｂから離れる方向に向けて引っ張る。すると、図９Ａ～図９Ｃに示すように、折り畳まれたテープ本体３５ａが次第に剥離していく。 When disposing of the used diaper 1, the knob portion 35c is picked and pulled in a direction away from the support portion 35b. Then, as shown in FIGS. 9A to 9C, the folded tape body 35a is gradually peeled off.
　そして、図９Ｃに示すように、テープ本体３５ａを完全に剥がした後、吸収性本体１０が内側になるようにしつつ長手方向に丸めたおむつ１に対して、テープ本体３５ａを巻き回すことにより、おむつ１を丸めた状態に保持することができる。 Then, as shown in FIG. 9C, after the tape body 35a is completely peeled off, the tape body 35a is wound around the diaper 1 rolled in the longitudinal direction while keeping the absorbent body 10 inside. The diaper 1 can be held in a rolled state.
　ここで、不織布３１は、接合領域３６（後処理テープ３５と不織布３１との接合領域）の少なくとも一部に、非開孔領域３１ｂを有することが望ましい。非開孔領域３１ｂと接合領域３６が接合されることで、不織布３１の強度が増し、後処理テープ３５を剥がす際に、不織布３１が破れることを抑制できる。 Here, it is desirable that the non-woven fabric 31 has a non-perforated region 31b in at least a part of the bonding region 36 (the bonding region between the post-treatment tape 35 and the non-woven fabric 31). By joining the non-perforated region 31b and the bonding region 36, the strength of the non-woven fabric 31 is increased, and it is possible to prevent the non-woven fabric 31 from being torn when the post-treatment tape 35 is peeled off.
　また、図８において、不織布３１と非開孔シート３２は、弾性部材３３の周囲に直接塗布されたホットメルト接着剤（不図示）で接合されている。そして、厚さ方向において、支持部３５ｂ（後処理テープ３５）と不織布３１との接合領域３６と、不織布３１と非開孔シート３２との接合領域（ここでは弾性部材３３）とが一部重なっている。このように、厚さ方向において、接合領域３６と、不織布３１と非開孔シート３２との接合領域とが少なくとも一部重なっていることが望ましい。これにより後処理テープ３５を剥がす際に、不織布３１のみが引っ張られないため、不織布３１が破れにくい。また、後処理テープ３５を剥がしやすい。 Further, in FIG. 8, the non-woven fabric 31 and the non-perforated sheet 32 are joined with a hot melt adhesive (not shown) directly applied around the elastic member 33. Then, in the thickness direction, the joint region 36 between the support portion 35b (post-treatment tape 35) and the non-woven fabric 31 and the joint region between the non-woven fabric 31 and the non-perforated sheet 32 (here, the elastic member 33) partially overlap. ing. As described above, it is desirable that the bonding region 36 and the bonding region between the non-woven fabric 31 and the non-perforated sheet 32 overlap at least partially in the thickness direction. As a result, when the post-treatment tape 35 is peeled off, only the non-woven fabric 31 is not pulled, so that the non-woven fabric 31 is not easily torn. In addition, the post-treatment tape 35 can be easily peeled off.
　また、上述したように、不織布３１と非開孔シート３２は、弾性部材３３の周囲に塗布されたホットメルト接着剤で接合されており、弾性部材３３は左右方向に沿って配置されているため、不織布３１と非開孔シート３２との接合領域（換言すると弾性部材３３）は、後処理テープ３５を左右方向に跨いでいる（図３参照）。（後処理テープ３５周辺の）不不織布３１は、後処理テープ３５の引っ張る力により、後処理テープ３５側に引っ張られ、開孔部４０を起点に破れるおそれがある。そこで、後処理テープ３５の引っ張る力に抗うように、不織布３１と非開孔シート３２との接合領域を後処理テープ３５の左右方向に跨がせると、（後処理テープ３５周辺の）開孔部４０から不織布３１が破れるのを抑制できる。 Further, as described above, the non-woven fabric 31 and the non-perforated sheet 32 are joined by a hot melt adhesive applied around the elastic member 33, and the elastic member 33 is arranged along the left-right direction. The bonding region between the non-woven fabric 31 and the non-perforated sheet 32 (in other words, the elastic member 33) straddles the post-treatment tape 35 in the left-right direction (see FIG. 3). The non-woven fabric 31 (around the post-treatment tape 35) may be pulled toward the post-treatment tape 35 by the pulling force of the post-treatment tape 35 and may be torn from the opening 40. Therefore, when the bonding region between the non-woven fabric 31 and the non-perforated sheet 32 is straddled in the left-right direction of the post-treatment tape 35 so as to resist the pulling force of the post-treatment tape 35, the holes (around the post-treatment tape 35) are opened. It is possible to prevent the non-woven fabric 31 from being torn from the portion 40.
　さらに、本実施形態の後処理テープ３５では、支持部３５ｂがテープ本体３５ａの端部で二股に分岐しているので、テープ本体３５ａが引っ張られる際に、支持部３５ｂの両端部の間（支持部３５ｂとテープ本体３５ａとの接続部）において引っ張り応力が最も大きくなる。これにより、テープ本体３５ａを引っ張っても、支持部３５ｂの端部からの剥がれが生じにくい。 Further, in the post-treatment tape 35 of the present embodiment, since the support portion 35b is bifurcated at the end portion of the tape body 35a, when the tape body 35a is pulled, it is between both ends of the support portion 35b (support). The tensile stress is greatest at the connection portion between the portion 35b and the tape body 35a). As a result, even if the tape body 35a is pulled, peeling from the end portion of the support portion 35b is unlikely to occur.
＝＝＝その他の実施形態＝＝＝
　以上、本発明の実施形態について説明したが、上記の実施形態は、本発明の理解を容易にするためのものであり、本発明を限定して解釈するためのものではない。また、本発明は、その趣旨を逸脱することなく、変更や改良され得るとともに、本発明にはその等価物が含まれるのはいうまでもない。 === Other embodiments ===
Although the embodiments of the present invention have been described above, the above-described embodiments are for facilitating the understanding of the present invention, and are not for limiting the interpretation of the present invention. Further, the present invention can be changed or improved without departing from the spirit thereof, and it goes without saying that the present invention includes an equivalent thereof.
　前述の実施形態では、腹側胴回り部２０の不織布２１と背側胴回り部３０の不織布３１の両方に複数の開孔４０が設けられていたが、何れか一方に複数の開孔４０が設けられていてもよい。 In the above-described embodiment, a plurality of openings 40 are provided in both the non-woven fabric 21 of the ventral waist circumference 20 and the non-woven fabric 31 of the dorsal waist circumference 30, but a plurality of openings 40 are provided in either one. You may be.
　また、前述の実施形態では、不織布２１，３１及びカバーシート１５は、吸収性本体１０と外装体２（腹側胴回り部２０、背側胴回り部３０）との接合部以外の部位にも複数の開孔４０を有していたが、接合部以外の部位には複数の開孔４０が設けられていなくてもよい。 Further, in the above-described embodiment, the non-woven fabrics 21 and 31 and the cover sheet 15 are provided at a plurality of portions other than the joint portion between the absorbent main body 10 and the exterior body 2 (ventral waist circumference portion 20, dorsal waist circumference portion 30). Although it has openings 40, it is not necessary that a plurality of openings 40 are provided in a portion other than the joint portion.
　また、胴回り部（腹側胴回り部２０、背側胴回り部３０）が３枚以上のシートで構成されていてもよく、そのうちの少なくとも１枚が複数の開孔４０を有していればよい。例えば、不織布２１や不織布３１よりも肌側に非開孔の資材（例えばプリントフィルムなど）がさらに設けられていても良い。 Further, the waist circumference portion (ventral waist circumference portion 20, dorsal waist circumference portion 30) may be composed of three or more sheets, and at least one of them may have a plurality of openings 40. For example, a non-perforated material (for example, a print film) may be further provided on the skin side of the non-woven fabric 21 or the non-woven fabric 31.
１　使い捨ておむつ（吸収性物品）、２　外装体、
１０　吸収性本体、１１　吸収性コア、
１２　トップシート、１３　バックシート（液不透過性シート）、
１４　インナーシート、１５　カバーシート、
１５ａ　開孔領域、１５ｂ　非開孔領域、
１５ｂ１　第１非開孔領域、１５ｂ２　第２非開孔領域、
２０　腹側胴回り部、２１　不織布、
２１ａ　開孔領域、２１ｂ　非開孔領域、
２１ｂ１　第１非開孔領域、２１ｂ２　第２非開孔領域、
２２　非開孔シート（シート部材）、２３　弾性部材、
２３ａ　不連続領域、
３０　背側胴回り部、３１　不織布、
３１ａ　開孔領域、３１ｂ　非開孔領域、
３１ｂ１　第１非開孔領域、３１ｂ２　第２非開孔領域、
３２　非開孔シート（シート部材）、３３　弾性部材、
３３ａ　不連続領域、
３５　後処理テープ（テープ部材）、
３５ａ　テープ本体、３５ｂ　支持部、３５ｃ　摘まみ部、
３６　接合領域、
４０　開孔、
ＢＨ　胴周り開口、
ＬＨ　脚周り開口 1 Disposable diaper (absorbent article), 2 Exterior,
10 absorbent body, 11 absorbent core,
12 top sheet, 13 back sheet (liquid impermeable sheet),
14 inner sheet, 15 cover sheet,
15a perforated area, 15b non-perforated area,
15b 1 first non-perforated area, 15b 2 second non-perforated area,
20 ventral waist circumference, 21 non-woven fabric,
21a perforated area, 21b non-perforated area,
21b 1 first non-perforated area, 21b 2 second non-perforated area,
22 Non-perforated sheet (seat member), 23 Elastic member,
23a discontinuous area,
30 Dorsal girth, 31 Non-woven fabric,
31a perforated area, 31b non-perforated area,
31b 1 first non-perforated area, 31b 2 second non-perforated area,
32 non-perforated sheet (sheet member), 33 elastic member,
33a discontinuous area,
35 Post-treatment tape (tape member),
35a tape body, 35b support part, 35c knob part,
36 junction area,
40 openings,
BH waist opening,
LH leg opening

Claims (12)

  1. 　展開状態において互いに交差する長手方向と左右方向と厚さ方向とを有し、
    　前記長手方向の一端側に位置する腹側胴回り部と、
    　前記長手方向の他端側に位置し、前記腹側胴回り部とは別体の背側胴回り部と、
    　前記長手方向の一端部が前記腹側胴回り部に接合され、前記長手方向の他端部が前記背側胴回り部に接合された吸収性本体と、
    を備えた吸収性物品であって、
    　前記吸収性本体は、
    　　　吸収性コアと、
    　　　前記吸収性コアよりも前記厚さ方向の非肌側に配置された液不透過性シートと、
    　　　前記液不透過性シートよりも前記厚さ方向の非肌側に配置されたカバーシートと、
    を備え、
    　前記カバーシートと、前記腹側胴回り部及び前記背側胴回り部のうちの少なくとも一方とが前記厚さ方向に重なる領域において、
    　　　前記腹側胴回り部及び前記背側胴回り部のうちの少なくとも一方は、複数の開孔を有する不織布を備え、
    　　　前記カバーシートは、複数の開孔を備え、
    　前記厚さ方向において、前記カバーシートと、前記不織布との間には、非開孔のシート部材が少なくとも一枚配置されている、
    ことを特徴とする吸収性物品。     It has a longitudinal direction, a left-right direction, and a thickness direction that intersect each other in the unfolded state.
    The ventral waist circumference located on one end side in the longitudinal direction and
    A dorsal waist circumference portion located on the other end side in the longitudinal direction and separate from the ventral waist circumference portion.
    An absorbent body in which one end in the longitudinal direction is joined to the ventral girth and the other end in the longitudinal direction is joined to the dorsal girth.
    It is an absorbent article equipped with
    The absorbent body
    With an absorbent core
    A liquid-impermeable sheet arranged on the non-skin side in the thickness direction of the absorbent core,
    A cover sheet arranged on the non-skin side in the thickness direction of the liquid impermeable sheet,
    With
    In a region where the cover sheet and at least one of the ventral waist circumference and the dorsal waist circumference overlap in the thickness direction.
    At least one of the ventral waist circumference and the dorsal waist circumference is provided with a non-woven fabric having a plurality of openings.
    The cover sheet has a plurality of openings and has a plurality of openings.
    In the thickness direction, at least one non-perforated sheet member is arranged between the cover sheet and the non-woven fabric.
    An absorbent article characterized by that.
  2. 　請求項１に記載の吸収性物品であって、
    　前記カバーシート、及び、前記不織布のうちの少なくとも一方は、
    　所定ピッチで開孔が並ぶ開孔領域と、開孔が存在しない非開孔領域を備え、
    　前記非開孔領域は、所定方向に沿い、且つ、前記所定方向と直交する方向の幅が前記所定ピッチよりも広い領域を有する、
    ことを特徴とする吸収性物品。     The absorbent article according to claim 1.
    At least one of the cover sheet and the non-woven fabric
    It has an open area where holes are lined up at a predetermined pitch and a non-open area where there is no open hole.
    The non-perforated region has a region along a predetermined direction and having a width in a direction orthogonal to the predetermined direction wider than the predetermined pitch.
    An absorbent article characterized by that.
  3. 　請求項２に記載の吸収性物品であって、
    　前記吸収性本体は、前記腹側胴回り部及び前記背側胴回り部とホットメルト接着剤で接合されており、
    　前記ホットメルト接着剤は、面状に塗布されているとともに、前記開孔領域と、前記非開孔領域とを跨いでいる、
    ことを特徴とする吸収性物品。     The absorbent article according to claim 2.
    The absorbent body is joined to the ventral waist circumference and the dorsal waist circumference with a hot melt adhesive.
    The hot melt adhesive is applied in a planar shape and straddles the perforated region and the non-perforated region.
    An absorbent article characterized by that.
  4. 　請求項２又は請求項３に記載の吸収性物品であって、
    　前記非開孔領域は、前記カバーシートと前記不織布の両方に設けられており、
    　前記厚さ方向において、前記カバーシートの前記非開孔領域と、前記不織布の前記非開孔領域の少なくとも一部が重なっている、
    ことを特徴とする吸収性物品。     The absorbent article according to claim 2 or 3.
    The non-perforated region is provided on both the cover sheet and the non-woven fabric.
    In the thickness direction, at least a part of the non-perforated region of the cover sheet and the non-perforated region of the non-woven fabric overlap.
    An absorbent article characterized by that.
  5. 　請求項２から請求項４のいずれか１項に記載の吸収性物品であって、
    　前記非開孔領域は、前記長手方向及び前記左右方向に対して斜めの方向に沿った第１非開孔領域を有している、
    ことを特徴とする吸収性物品。     The absorbent article according to any one of claims 2 to 4.
    The non-perforated region has a first non-perforated region along a direction oblique to the longitudinal direction and the left-right direction.
    An absorbent article characterized by that.
  6. 　請求項５に記載の吸収性物品であって、
    　前記非開孔領域は、前記斜めの方向と交差する方向に沿った第２非開孔領域を有し、
    　前記第１非開孔領域と前記第２非開孔領域は、前記開孔領域を囲む格子状に形成されている、
    ことと特徴とする吸収性物品。     The absorbent article according to claim 5.
    The non-perforated region has a second non-perforated region along a direction intersecting the diagonal direction.
    The first non-perforated region and the second non-opened region are formed in a grid pattern surrounding the perforated region.
    Absorbent article that is characteristic of it.
  7. 　請求項２から請求項６のいずれか１項に記載の吸収性物品であって、
    　前記不織布と前記シート部材の間には、前記左右方向に沿った弾性部材が設けられており、前記弾性部材は、前記左右方向の中央に不連続領域を有し、
    　前記カバーシートは、前記不連続領域よりも前記左右方向の外側において、前記弾性部材と重なる部位に、前記非開孔領域の少なくとも一部を有する、
    ことを特徴とする吸収性物品。     The absorbent article according to any one of claims 2 to 6.
    An elastic member along the left-right direction is provided between the non-woven fabric and the sheet member, and the elastic member has a discontinuous region in the center of the left-right direction.
    The cover sheet has at least a part of the non-perforated region at a portion overlapping the elastic member on the outside of the discontinuous region in the left-right direction.
    An absorbent article characterized by that.
  8. 　請求項２から請求項７のいずれか１項に記載の吸収性物品であって、
    　前記腹側胴回り部と前記背側胴回り部と前記吸収性本体とによって一対の脚周り開口が形成されており、
    　前記不織布は、前記脚周り開口側の端部に前記開孔領域の少なくとも一部を有し、
    　前記カバーシートは、前記脚周り開口側の端部に前記非開孔領域の少なくとも一部を有する、
    ことを特徴とする吸収性物品。     The absorbent article according to any one of claims 2 to 7.
    A pair of leg circumference openings are formed by the ventral waist circumference portion, the dorsal waist circumference portion, and the absorbent body.
    The non-woven fabric has at least a part of the perforated region at the end on the opening side around the leg.
    The cover sheet has at least a part of the non-perforated region at the end on the opening side around the leg.
    An absorbent article characterized by that.
  9. 　請求項２から請求項８の何れか１項に記載の吸収性物品であって、
    　前記不織布の前記厚さ方向の非肌側には、前記吸収性物品を廃棄する際に前記吸収性物品を丸めた状態に保持するためのテープ部材が接合されており、
    　前記不織布は、前記テープ部材との接合領域の少なくとも一部に前記非開孔領域を有する、
    ことを特徴とする吸収性物品。     The absorbent article according to any one of claims 2 to 8.
    A tape member for holding the absorbent article in a rolled state when the absorbent article is discarded is bonded to the non-skin side of the nonwoven fabric in the thickness direction.
    The non-woven fabric has the non-perforated region in at least a part of the bonding region with the tape member.
    An absorbent article characterized by that.
  10. 　請求項９に記載の吸収性物品であって、
    　前記厚さ方向において、前記テープ部材と前記不織布との接合領域と、前記不織布と前記シート部材との接合領域とが少なくとも一部重なっている、     The absorbent article according to claim 9.
    In the thickness direction, at least a part of the bonding region between the tape member and the non-woven fabric and the bonding region between the non-woven fabric and the sheet member overlap.
  11. 　請求項１０に記載の吸収性物品であって、
    　前記不織布と前記シート部材との接合領域は、前記テープ部材を前記左右方向に跨いでいる、
    ことを特徴とする吸収性物品。     The absorbent article according to claim 10.
    The bonding region between the non-woven fabric and the sheet member straddles the tape member in the left-right direction.
    An absorbent article characterized by that.
  12. 　請求項１から請求項１１のいずれか１項に記載の吸収性物品であって、
    　前記吸収性本体は、前記カバーシートよりも前記厚さ方向の肌側に、図柄を有するインナーシートをさらに備え、
    　前記シート部材の単位面積当たりの重量が、前記不織布の単位面積当たりの重量よりも小さい、
    ことを特徴とする吸収性物品。     The absorbent article according to any one of claims 1 to 11.
    The absorbent body further includes an inner sheet having a pattern on the skin side in the thickness direction of the cover sheet.
    The weight per unit area of the sheet member is smaller than the weight per unit area of the nonwoven fabric.
    An absorbent article characterized by that.
PCT/JP2020/007062 2019-04-26 2020-02-21 Absorbent article WO2020217684A1 (en)

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WO2022030432A1 (en) * 2020-08-06 2022-02-10 花王株式会社 Underpants-type disposable diaper
JP7064035B2 (en) * 2020-08-06 2022-05-09 花王株式会社 Pants-type disposable diapers
JP2023061803A (en) * 2021-10-20 2023-05-02 ユニ・チャーム株式会社 absorbent article

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JP2014221122A (en) * 2013-05-13 2014-11-27 花王株式会社 Underpants type wearing article and manufacturing method therefor
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