WO2020217684A1 - 吸収性物品 - Google Patents

吸収性物品 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
English (en)
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/pt
Publication of WO2020217684A1 publication Critical patent/WO2020217684A1/ja

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—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 of the pads
    • 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 of the pads
    • 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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  • Health & Medical Sciences (AREA)
  • Vascular Medicine (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dermatology (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
PCT/JP2020/007062 2019-04-26 2020-02-21 吸収性物品 WO2020217684A1 (ja)

Priority Applications (1)

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BR112021017083-9A BR112021017083B1 (pt) 2019-04-26 2020-02-21 Artigo absorvente

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JP2019-086177 2019-04-26
JP2019086177A JP6768877B1 (ja) 2019-04-26 2019-04-26 吸収性物品

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WO2022030432A1 (ja) * 2020-08-06 2022-02-10 花王株式会社 パンツ型使い捨ておむつ
JP7064035B2 (ja) * 2020-08-06 2022-05-09 花王株式会社 パンツ型使い捨ておむつ
JP2023061803A (ja) * 2021-10-20 2023-05-02 ユニ・チャーム株式会社 吸収性物品

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS625534B2 (enrdf_load_stackoverflow) * 1981-09-29 1987-02-05 Nippon Electric Co
JP2014221122A (ja) * 2013-05-13 2014-11-27 花王株式会社 パンツ型着用物品およびその製造方法
JP2015107223A (ja) * 2013-12-04 2015-06-11 花王株式会社 パンツ型吸収性物品
WO2016208280A1 (ja) * 2015-06-26 2016-12-29 ユニ・チャーム株式会社 使い捨て着用物品
JP2017086469A (ja) * 2015-11-10 2017-05-25 ユニ・チャーム株式会社 パンツ型使い捨ておむつ

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6205534B1 (ja) * 2016-07-29 2017-09-27 ユニ・チャーム株式会社 吸収性物品

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS625534B2 (enrdf_load_stackoverflow) * 1981-09-29 1987-02-05 Nippon Electric Co
JP2014221122A (ja) * 2013-05-13 2014-11-27 花王株式会社 パンツ型着用物品およびその製造方法
JP2015107223A (ja) * 2013-12-04 2015-06-11 花王株式会社 パンツ型吸収性物品
WO2016208280A1 (ja) * 2015-06-26 2016-12-29 ユニ・チャーム株式会社 使い捨て着用物品
JP2017086469A (ja) * 2015-11-10 2017-05-25 ユニ・チャーム株式会社 パンツ型使い捨ておむつ

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JP2020179048A (ja) 2020-11-05

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