WO2020235213A1 - Couche jetable de type culotte - Google Patents

Couche jetable de type culotte Download PDF

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Publication number
WO2020235213A1
WO2020235213A1 PCT/JP2020/013453 JP2020013453W WO2020235213A1 WO 2020235213 A1 WO2020235213 A1 WO 2020235213A1 JP 2020013453 W JP2020013453 W JP 2020013453W WO 2020235213 A1 WO2020235213 A1 WO 2020235213A1
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WO
WIPO (PCT)
Prior art keywords
sweat
waist circumference
pants
absorbing portion
disposable diaper
Prior art date
Application number
PCT/JP2020/013453
Other languages
English (en)
Japanese (ja)
Inventor
哲郎 大窪
航平 辻
井上　拓也
亮 宮瀬
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 CN202080037203.1A priority Critical patent/CN113873977B/zh
Publication of WO2020235213A1 publication Critical patent/WO2020235213A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—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

Definitions

  • the present invention relates to a pants-type disposable diaper.
  • Pant-type disposable diapers have been known as pants-type absorbent articles. Since such pants-type disposable diapers generally have a high fit, stuffiness due to sweating during wearing and skin irritation may be a problem.
  • a disposable diaper in which a sweat absorbing sheet for absorbing the wearer's sweat is provided around the waist has been proposed.
  • Patent Document 1 discloses a disposable diaper having a breathable sweat-absorbing sheet on at least one end flap in the anterior-posterior-waist area of the diaper.
  • the breathable sweat-absorbing sheet 9 is formed with a large number of openings 16 to improve the breathability of the region where the sweat-absorbing sheet 9 is arranged.
  • the rigidity of the sweat absorbing sheet 9 itself is lowered, so that the sweat absorbing sheet 9 also contracts when the front and rear waist circumference areas 3 and 4 contract, and many of them are surfaced. Wrinkles may be formed. In this case, it is difficult for the sweat absorbing sheet 9 to come into contact with the wearer's skin in a flat surface (curved surface), and the sweat absorbing function of the sweat absorbing sheet 9 may be impaired.
  • the present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide a pants-type disposable diaper having good sweat absorption performance.
  • the main invention for achieving the above object has a vertical direction and a left-right direction intersecting each other, an absorbent main body, an elastic member that expands and contracts in the left-right direction, and a skin arranged on the skin side of the elastic member.
  • a pants-type disposable diaper having a girth portion including a side sheet and a non-skin side sheet arranged on the non-skin side of the elastic member, wherein the girth portion has a weak sweat absorbing portion and the weak sweat absorbing portion. It has a sweat-absorbing portion that absorbs the wearer's sweat more easily than the sweat-absorbing portion, and is characterized in that the weak sweat-absorbing portion is provided with an opening in at least one of the skin-side sheet and the non-skin-side sheet. It is a pants-type disposable diaper.
  • FIG. 4A is a schematic cross-sectional view of a pants-shaped diaper 1 stretched in the left-right direction when viewed from the upper side (the waist circumference opening BH side) in the vertical direction.
  • FIG. 4B is a schematic cross-sectional view of the pants-shaped diaper 1 in the natural state after the extended state of FIG. 4A is released, as viewed from the upper side (the waist opening BH side) in the vertical direction.
  • It is a top view of the modified example of the diaper 1 in the expanded and extended state.
  • An absorbent body an elastic member that expands and contracts in the left-right direction, a skin-side sheet arranged on the skin side of the elastic member, and a non-skin-side side of the elastic member, which have vertical and horizontal directions intersecting each other.
  • a pants-type disposable diaper having a non-skin side sheet arranged on the skin and a waist circumference portion provided with the waist circumference portion, which absorbs the wearer's sweat more than the weak sweat absorbing portion and the weak sweat absorbing portion.
  • a pants-type disposable diaper having an easy sweat-absorbing portion and having an opening in at least one of the skin-side sheet and the non-skin-side sheet in the weak sweat-absorbing portion.
  • the weak sweat-absorbing part is provided with an opening, the rigidity is lower than that of the sweat-absorbing part, and when the diaper is worn, the weak sweat-absorbing part is large in the left-right direction. Easy to shrink. Then, by contracting the weak sweat absorbing portion, the sweat absorbing portion is relatively easily extended in the left-right direction, and it is easy to maintain the planar shape. Therefore, the sweat-absorbing portion fits the wearer's skin on the surface, and the wearer's sweat can be easily absorbed efficiently. This makes it possible to realize a pants-type disposable diaper having good sweat absorption performance.
  • the waist circumference portion has a ventral waist circumference portion and a dorsal waist circumference portion
  • the sweat absorbing portion is one of the ventral waist circumference portion and the dorsal waist circumference portion. It is desirable that it is provided in.
  • the amount of contraction of the ventral waist circumference and the dorsal waist circumference portion on the side where the sweat absorbing portion is not provided is large, and the contraction amount on the side where the sweat absorbing portion is provided is large. It becomes smaller. Therefore, the portion provided with the sweat absorbing portion is more likely to be extended, and the sweat absorbing portion is more likely to maintain a flat shape. This makes it possible to improve the sweat absorption of the diaper.
  • the waist circumference portion has a ventral waist circumference portion and a dorsal waist circumference portion, and the sweat absorbing portion is provided on both the ventral waist circumference portion and the dorsal waist circumference portion. It is desirable to have.
  • the area of the sweat-absorbing portion provided on the dorsal waist circumference portion of the pants-type disposable diaper is larger than the area of the sweat-absorbing portion provided on the ventral waist circumference portion.
  • the dorsal sweat-absorbing portion on the dorsal side by making the area of the sweat-absorbing portion on the dorsal side larger than the area of the sweat-absorbing portion on the ventral side, a region having high rigidity on the dorsal side becomes larger than that on the ventral side.
  • the dorsal sweat-absorbing portion is less likely to contract than the ventral sweat-absorbing portion, and it is easy to maintain a flat shape, so that the wearer's skin is easily fitted to the skin. This makes it possible to improve the sweat absorption of the diaper.
  • the rigidity of the sweat absorbing portion provided on the dorsal waist circumference portion is higher than the rigidity of the sweat absorbing portion provided on the ventral waist circumference portion.
  • the sweat-absorbing part on the dorsal side is less likely to contract than on the ventral side. Therefore, the sweat-absorbing portion tends to maintain a flat shape on the back side, and easily fits the wearer's skin on the surface. This makes it possible to improve the sweat absorption of the diaper.
  • the waist circumference portion has a ventral waist circumference portion and a dorsal waist circumference portion, and the ventral waist circumference portion and the dorsal waist circumference portion are located at both ends in the left-right direction. It is desirable that the sweat-absorbing portion is connected to each other by a pair of side locking provided, and the weak sweat-absorbing portion is provided between the sweat-absorbing portion and the side-locking portion in the left-right direction.
  • the weak sweat-absorbing portion between the sweat-absorbing portion and the side locking portion contracts in the left-right direction, so that the sweat-absorbing portion is pulled to the outside (side locking side) in the left-right direction. It is stretched to make it easier to maintain the planar shape.
  • the sweat-absorbing portion easily fits the wearer's skin on the surface, and the sweat-absorbing performance of the diaper can be improved.
  • the area of the opening provided per unit area of the weak sweat absorbing portion is larger than the area of the opening provided per unit area of the sweat absorbing portion.
  • the rigidity of the weak sweat-absorbing portion is lower than the rigidity of the sweat-absorbing portion, and when the diaper contracts, the contraction amount of the weak sweat-absorbing portion becomes larger than the contraction amount of the sweat-absorbing portion. Therefore, the sweat absorbing portion is relatively easily extended in the left-right direction, and it is easy to maintain the planar shape. As a result, when the diaper is worn, the sweat-absorbing portion easily fits the wearer's skin on the surface, and the sweat-absorbing performance of the diaper can be improved.
  • the pants-type disposable diaper is not provided with the opening in the sweat-absorbing portion.
  • the sweat-absorbing part without an opening has a higher rigidity than the weak sweat-absorbing part having an opening, and when the weak sweat-absorbing part contracts, the sweat-absorbing part becomes relative. It is easily stretched to maintain a flat shape. As a result, the sweat absorption performance of the diaper can be further improved.
  • the pants-type disposable diaper is provided with a breathable sweat-absorbing sheet that is separate from the skin-side sheet and the non-skin-side sheet in the sweat-absorbing portion.
  • the sweat-absorbing part is provided with a breathable sweat-absorbing sheet that is separate from the seat members (skin-side sheet and non-skin-side sheet) that constitute the dorsal waistline part.
  • the material rigidity is higher than the material rigidity of the weak sweat absorbing part. Therefore, the sweat-absorbing portion easily maintains a flat shape, and by fitting the sweat-absorbing portion on the skin of the wearer on the surface, the sweat-absorbing performance of the diaper can be further improved.
  • the pants-type disposable diaper has a through hole that penetrates the skin-side sheet and the non-skin-side sheet in the thickness direction.
  • the rigidity of the weak sweat-absorbing portion is lower than that in the case where the opening is a non-through hole, and the weak sweat-absorbing portion is likely to contract. Therefore, the sweat-absorbing portion is relatively easy to extend in the left-right direction, and it is easy to maintain the planar shape. As a result, the sweat absorption performance of the diaper can be further improved.
  • the pants-type disposable diaper is provided with the opening in the area above the sweat-absorbing portion in the vertical direction.
  • the rigidity of the upper end portion of the waist circumference portion becomes low, and when the waist circumference portion contracts, unevenness (wrinkles) in the thickness direction is likely to be formed on the upper end portion. Therefore, heat and water can easily move through the gap between the wearer's skin and wrinkles, and it is possible to prevent stuffiness and skin irritation caused by sweating.
  • the pants-type disposable diaper is not provided with the opening in the area where the absorbent body and the waistline overlap.
  • the pants-type disposable diaper has a flat elastic sheet that expands and contracts at least in the left-right direction.
  • the waist circumference portion has a ventral waist circumference portion and a dorsal waist circumference portion, and the sweat absorbing portion is on either one of the ventral waist circumference portion and the dorsal waist circumference portion.
  • the stretchable sheet is provided on the other side, and it is desirable that the stretchable sheet is provided with an opening.
  • the rigidity and stress of the elastic sheet are reduced by providing openings on the other side of the ventral waist circumference portion and the dorsal waist circumference portion, and wrinkles (unevenness) are formed.
  • the evaporation of sweat is promoted.
  • the sweat-absorbing portion is relatively easily stretched due to the contraction of the elastic sheet, and the sweat-absorbing property is improved.
  • the pants-type disposable diaper according to the present invention
  • an embodiment will be described by taking as an example a pants-type disposable diaper 1 for infants (hereinafter, also referred to as “diaper 1”).
  • the pants-type absorbent article according to the present invention can be used not only as a disposable diaper for infants but also as a disposable diaper for adults.
  • FIG. 1 is a schematic perspective view of a pants-type disposable diaper 1 (diaper 1).
  • FIG. 2 is a plan view of the unfolded and stretched diaper 1.
  • FIG. 3 is a cross-sectional view taken along the line II of FIG.
  • the diaper 1 has a vertical direction and a horizontal direction intersecting each other in the pants-shaped state shown in FIG. 1, and a waist circumference opening BH and a pair of leg circumference openings LH are formed.
  • the waist opening BH side is the upper side
  • the inseam side is the lower side.
  • the direction in which the materials constituting the diaper 1 are laminated is referred to as the thickness direction
  • the side in the thickness direction that contacts the wearer is referred to as the skin side
  • the side that does not contact the wearer is referred to as the skin side. It is called the non-skin side.
  • the diaper 1 has an absorbent main body 10, a ventral waist circumference portion 20, and a dorsal waist circumference portion 30, which are three members having a rectangular shape in a plan view.
  • the ventral waist circumference 20 is a portion that is applied to the ventral side of the wearer
  • the dorsal waist circumference portion 30 is a portion that is applied to the back side of the wearer.
  • the ventral waist circumference portion 20 and the dorsal waist circumference portion 30 are arranged so that their longitudinal directions are along the left-right direction of the diaper 1. Then, one end of the absorbent body 10 in the longitudinal direction is arranged at the center of the ventral waistline 20 in the left-right direction, and the length of the absorbent body 10 is arranged at the center of the dorsal waistline 30 in the left-right direction. The end on the other side of the direction is arranged.
  • the absorbent body 10 is folded in half at substantially the center of the longitudinal direction so that the longitudinal direction of the absorbent body 10 is along the vertical direction of the diaper 1, and both end portions of the ventral waist circumference portion 20 in the left-right direction of the diaper 1 are folded. And both end portions of the back side waist circumference portion 30 are joined by heat welding, ultrasonic welding, or the like to form a pair of side locking 5, so that the diaper 1 in the pants-shaped state shown in FIG. 1 is obtained.
  • the absorbent body 10 is arranged on the absorbent body 11, the liquid-permeable top sheet 12 arranged on the skin side of the absorbent body 11, and on the non-skin side of the absorbent body 11. It has a liquid-impermeable back sheet 13 and an exterior sheet 14 arranged on the non-skin side of the back sheet 13.
  • the absorber 11 has an absorbent core 11A that absorbs and retains excrement such as urine, and a liquid-permeable core wrap sheet 11B that covers the absorbent core 11A.
  • a liquid absorbent fiber such as pulp containing a highly absorbent polymer (SAP) formed into a predetermined shape can be exemplified.
  • the top sheet 12 is formed of, for example, a non-woven fabric such as an air-through non-woven fabric or a spunbonded non-woven fabric.
  • the backsheet 13 is a liquid-impermeable and breathable film such as polyethylene or polypropylene.
  • the exterior sheet 14 is formed of, for example, a non-woven fabric equivalent to the top sheet 12.
  • Side sheets 15 are provided at both ends of the exterior sheet 14 in the left-right direction.
  • the side sheet 15 extends more outward than the exterior sheet 14 in the left-right direction, and is folded inward with the outer ends 15es and 15es as folding positions to form the side flap SF of the diaper 1.
  • the side flap SF is provided so as to project outward in the left-right direction along the leg circumference opening LH.
  • a plurality of elastic members around the legs 17, 17 ... Made of rubber threads or the like are extended in the vertical direction (longitudinal direction), respectively. In the state, they are fixed at predetermined intervals in the left-right direction (width direction) (see FIG. 2).
  • elasticity is imparted to the side flap SF along the vertical direction (longitudinal direction of the absorbent body 10). That is, elasticity is imparted along the leg circumference opening LH.
  • a pair of leak-proof wall portions 70, 70 are provided on both sides of the absorber 11 in the left-right direction.
  • One or more leak-proof wall elastic members 18 made of rubber threads or the like are fixed to the inner end of the leak-proof wall 70 in the left-right direction in a state of being extended in the vertical direction (longitudinal direction) (FIG. 2). reference).
  • the leak-proof wall portion 70 stands up on the wearer's skin side from both left and right sides of the absorber 11 based on the elasticity of the leak-proof wall elastic member 18, so that excrement is absorbed. Suppresses leakage (lateral leakage) to the outside of the sex body 10.
  • the ventral waist circumference portion 20 and the dorsal waist circumference portion 30 are a plurality of skin-side sheets 21 and 31, and non-skin-side sheets 22 and 32 laminated on the skin-side sheets 21 and 31, respectively. It has the filamentous elastic members 23 and 33 of the above.
  • the non-skin side sheets 22 and 32 are arranged on the non-skin side of the skin side sheets 21 and 31.
  • the skin side sheets 21 and 31 and the non-skin side sheets 22 and 32 are arranged on the non-skin side of the absorbent body 10. Further, the upper ends 221, 321 of the non-skin side sheets 22 and 32 are folded downward in the vertical direction at the upper end 20 eu of the ventral waist circumference portion 20 and the upper end 30 eu of the dorsal waist circumference portion 30, respectively.
  • the longitudinal end of the absorbent body 10 is covered from the skin side (see FIG. 3).
  • the skin-side sheets 21 and 31 and the non-skin-side sheets 22 and 32 are non-stretchable sheets that do not substantially have elasticity in the left-right direction.
  • Examples of the skin-side sheets 21 and 31 and the non-skin-side sheets 22 and 32 include SMS non-woven fabrics (spunbond, meltblown, spunbonded non-woven fabric), spunbonded non-woven fabrics, air-through non-woven fabrics, plastic sheets, perforated plastic sheets and their laminated sheets. Can be used.
  • the filamentous elastic member 33 is arranged from the upper end portion to the lower end portion.
  • the thread-like elastic member 23 is not arranged at the upper end of the ventral waist circumference portion 20, and instead, a flat (belt-shaped) elastic sheet 24 that expands and contracts in the left-right direction is arranged.
  • the elastic sheet 24 By arranging the elastic sheet 24 without arranging the filamentous elastic member 23 at the upper end portion of the ventral waist circumference portion 20 in this way, the upper end portion of the ventral waist circumference portion 20 is in close contact with the wearer's skin. To do. Therefore, local tightening can be suppressed, and it is possible to make it difficult for linear marks due to the rubber thread to remain. In particular, since the abdomen of the baby is protruding, it is preferable to suppress the tightening of the ventral waist circumference portion 20 by using the elastic sheet 24.
  • the expansion and contraction force of the upper ends of the waist circumferences 20 and 30 has a great influence on the ease of expanding the waist circumference opening BH when wearing the diaper 1.
  • the elastic sheet 24 has a property that it easily expands from the natural state and does not easily contract from the extended state. Therefore, by arranging the elastic sheet 24 at the upper end of the ventral waist circumference 20, it becomes easier to widen the waist circumference opening BH when wearing the diaper 1, and after the waist circumferences 20 and 30 are fitted to the wearer. It can prevent tightening of the abdomen.
  • the stretchable sheet 24, for example, mass 10 ⁇ 40g / m 2, more preferably, spunbond nonwoven fabric mass is composed of 15 ⁇ 30g / m 2 elastic fibers, air-through nonwoven fabric, a needle punch nonwoven fabric, various A stretchable fibrous nonwoven fabric produced by a known production method can be used.
  • the elastic fiber is made of a thermoplastic elastomer, rubber, or the like as a raw material.
  • the thermoplastic elastomer is used as a raw material, melt spinning using an extruder is possible in the same manner as a normal thermoplastic resin. Further, the fibers thus obtained are easily heat-sealed and are suitable as a stretchable fibrous nonwoven fabric.
  • thermoplastic elastomer examples include styrene-based elastomers, olefin-based elastomers, polyester-based elastomers, and polyurethane-based elastomers. These can be used alone or in combination of two or more.
  • the elastic sheet may be one that exhibits elasticity at least in the left-right direction, and may be one that exhibits elasticity in two or more directions.
  • the expansion ratio of the elastic sheet 24 in the left-right direction is preferably about 1.2 times to 3.0 times.
  • a plurality of openings 40 that penetrate the elastic sheet 24 and the ventral waist circumference 20 (skin side sheet 21, non-skin side sheet 22) in the thickness direction, 40 ... Is provided.
  • the opening 40 has a function as a ventilation hole in the ventral waist circumference 20.
  • the opening 40 provided in the ventral waist circumference 20 can be, for example, a circular hole having a diameter of about 1.5 mm, but the shape and size of the opening 40 are not limited to this, and can be changed as appropriate. However, from the viewpoint of ensuring air permeability, the opening 40 is preferably a hole having a certain area in a natural state, and a linear cut such as a so-called slit is excluded.
  • the “natural state” is the state when the diaper 1 is left for a predetermined time. For example, after taking out the diaper 1 in the product state from the package, the ventral waist circumference 20 and the dorsal waist circumference 30 are pulled to both outer sides in the left-right direction, and the waist circumferences 20 and 30 are set to the "extended state” in this extended state. After continuing for about 15 to 30 seconds, release the pull of the diaper 1 and place it on a flat surface such as a desk. Then, the state in which 5 minutes have passed on such a flat surface is set as the natural state.
  • the opening 40 does not necessarily have to penetrate the ventral waist circumference 20 in the thickness direction.
  • the opening 40 may be provided in either the skin side sheet 21 or the non-skin side sheet 22. If the opening 40 is provided in at least one of the skin side sheet 21 and the non-skin side sheet 22, the air permeability is increased as compared with the case where the opening 40 is not provided at all, which causes discomfort to the wearer. It can be difficult.
  • a sweat absorbing portion 50 that easily absorbs the wearer's sweat as compared with other regions is provided.
  • the sweat absorbing portion 50 is provided in a predetermined area on the skin side of the dorsal waist circumference portion 30, and sweats the wearer more than other areas other than the sweat absorbing portion 50. This is the part that is easy to absorb. Since the sweat absorbing portion 50 is provided on the skin side surface of the dorsal waist circumference portion 30, sweat is easily absorbed in the back side waist circumference region of the wearer who tends to sweat a large amount when wearing the diaper 1, and it becomes stuffy or rash. Can be easily suppressed.
  • the sweat absorbing portion 50 in the present embodiment is, for example, a breathable sweat absorbing sheet 51 which is a sheet member formed of an upper layer containing at least 20% by weight of hydrophilic fibers and a lower layer of hydrophobic fibers integrally laminated thereto. It is formed by joining to the skin side surface of the dorsal waist circumference portion 30.
  • the breathable sweat absorbing sheet 51 may be a sheet member having a single layer structure containing at least 20% by weight of hydrophilic fibers.
  • the hydrophilic fiber contained in the breathable sweat absorbing sheet 51 a cellulosic fiber such as rayon, a sweat absorbing polyester fiber whose fiber surface is hydrophilized, or the like can be used. Further, as the fiber other than the hydrophilic fiber, that is, the hydrophobic fiber, a polypropylene, polyester, polyethylene-polyester composite fiber, a crimped composite fiber or the like can be used.
  • the form of the breathable sweat-absorbing sheet 51 is not particularly limited, but is a non-woven fabric such as spunlace, needle punch, sumarou bond, spun bond, melt bron, chemical bond having a basis weight of 10 to 100 g / m2 and a fineness of 0.1 to 10 d. Can be mentioned.
  • the breathable sweat absorbing sheet 51 may be a member having a color different from that of the skin side sheet 31 and the non-skin side sheet 32 constituting the dorsal waist circumference portion 30.
  • the breathable sweat absorbing sheet 51 is configured in blue. In this way, it is possible to make it easier for the user (the wearer of the diaper 1 or the person to wear the diaper 1) to visually recognize that the breathable sweat absorbing sheet 51 is provided on the dorsal waist circumference portion 30. Further, as shown in FIG. 2, it is preferable that at least a part of the breathable sweat absorbing sheet 51 and the absorbing main body 10 overlap in the vertical direction.
  • the breathable sweat absorbing sheet 51 is preferably arranged so as to be continuous with the absorbing main body 10 in the vertical direction. By doing so, since there is no gap between the breathable sweat absorbing sheet 51 and the absorbent main body 10, it becomes easy to secure good water absorption performance in a wide range on the back side.
  • a hydrophilic agent 52 (not shown) is applied to a predetermined region on the skin side surface of the dorsal waist circumference portion 30, or a hydrophilic agent is applied to a predetermined region on the skin side surface of the dorsal waist circumference portion 30. It may be formed by joining the sheet members (for example, non-woven fabric) coated with 52. As the hydrophilic agent 52, a known hydrophilic agent used for absorbent articles such as disposable diapers can be used. Further, the sweat absorbing portion 50 may be formed by performing a pressing process on a predetermined region of the skin side sheet 31. For example, when a plurality of pin embossing processes are applied to the area shown by the shaded area in FIG.
  • the gaps between the fibers constituting the sheet are narrowed in the portion where the pin embossing is formed, so that water permeates due to the capillary phenomenon. It becomes easier and water absorption is improved. Therefore, the sweat absorbing portion 50 can also be formed by such a pressing process.
  • the sweat absorbing portion 50 is not provided with any opening such as a hole or a slit corresponding to the above-mentioned opening 40. The reason for this will be explained later.
  • the portion of the ventral waist circumference portion 20 and the dorsal waist circumference portion 30 of the diaper 1 in which the sweat absorbing portion 50 is not provided is also referred to as a “weak sweat absorbing portion 60”. That is, the sweat absorbing portion 50 is a portion that more easily absorbs the wearer's sweat than the weak sweat absorbing portion 60.
  • FIG. 4A is a schematic cross-sectional view of a pants-shaped diaper 1 stretched in the left-right direction when viewed from the upper side (the waist circumference opening BH side) in the vertical direction.
  • FIG. 4B is a schematic cross-sectional view of the pants-shaped diaper 1 in the natural state after the extended state of FIG. 4A is released, as viewed from the upper side (the waist opening BH side) in the vertical direction.
  • FIG. 4A is a schematic cross-sectional view of a pants-shaped diaper 1 stretched in the left-right direction when viewed from the upper side (the waist circumference opening BH side) in the vertical direction.
  • FIG. 4B is a schematic cross-sectional view of the pants-shaped diaper 1 in the natural state after the extended state of FIG. 4A is released, as viewed from the upper side (the waist opening BH side) in the vertical direction.
  • the waist circumference openings BH are displayed as a substantially elliptical shape in a state where the waist circumference portions 20 and 30 are extended in the left-right direction. Further, in both FIGS. 4A and 4B, the absorbent main body 10 is hidden.
  • the sweat absorbing portion 50 provided on the skin side surface of the dorsal waist circumference portion 30 also maintains a flat surface (curved surface) as shown in FIG. 4A.
  • the ventral waist circumference 20 and the dorsal side are released based on the contraction force of the filamentous elastic members 23, 33 and the elastic sheet 24 provided on the ventral waist circumference 20 and the dorsal waist circumference 30.
  • the waist circumference 30 contracts in the left-right direction.
  • the mode of contraction differs between the ventral waist circumference portion 20 and the dorsal waist circumference portion 30.
  • the ventral waist circumference 20 of the diaper 1 is provided with a plurality of openings 40, 40, etc.
  • the rigidity of the skin side sheet 21 and the non-skin side sheet 22 is higher than that in the case where the openings are not provided. It is low and easy to deform. Therefore, the skin-side sheet 21 and the non-skin-side sheet 22 contract greatly in the left-right direction, and the surface of the ventral waist circumference portion 20 is deformed so as to have irregularities in the thickness direction as shown in FIG. 4B. That is, a plurality of wrinkles are formed on the surface of the ventral waist circumference portion 20.
  • the dorsal waist circumference 30 is provided with a sweat absorbing portion 50, and in the diaper 1, the sweat absorbing portion 50 is provided with an opening (through hole) corresponding to the opening 40 of the ventral waist circumference 20.
  • the region of the dorsal waist circumference portion 30 where the sweat absorbing portion 50 is provided has higher rigidity than the other regions (weak sweat absorbing portion 60), and the skin side sheet 31 and the non-skin side sheet 32 are less likely to be deformed. It has become. Therefore, the region of the dorsal waist circumference portion 30 that overlaps with the sweat absorbing portion 50 can easily maintain a flat state.
  • ventral waist circumference portion 20 and the dorsal waist circumference portion 30 are joined to each other by a pair of side locks 5 and 5 at both end portions in the left-right direction. That is, the ventral waist circumference portion 20 that easily contracts and the dorsal waist circumference portion 30 (sweat absorbing portion 50) that does not easily contract are connected in the circumferential direction of the waist circumference opening BH.
  • the ventral waist circumference portion 20 corresponding to the weak sweat absorbing portion 60 contracts in the left-right direction
  • the sweat-absorbing portion 50 of the dorsal waist circumference portion 30 is relatively easily pulled to both sides in the left-right direction, and the ventral waist circumference portion 20 Compared with (weak sweat absorbing portion 60), unevenness in the thickness direction is less likely to be formed. That is, wrinkles are less likely to be formed on the sweat absorbing portion 50, and it becomes easier to maintain a flat shape.
  • the sweat-absorbing portion 50 easily fits snugly on the surface of the wearer's skin, and the wearer's sweat is efficiently absorbed over the entire surface of the sweat-absorbing portion 50. Can be done. Thereby, the sweat absorption performance of the diaper 1 can be improved.
  • the sweat absorbing portion 50 is provided only on one of the ventral waist circumference portion 20 and the dorsal waist circumference portion 30. In other words, the sweat absorbing portion 50 is not provided on the other side of the ventral waist circumference portion 20 and the dorsal waist circumference portion 30. In the example of FIG. 4B, the sweat absorbing portion 50 is provided only on the dorsal waist circumference portion 30, and the sweat absorbing portion 50 is not provided on the ventral waist circumference portion 20. As described above, since the sweat absorbing portion 50 is provided only on one side of the ventral waist circumference portion 20 and the dorsal waist circumference portion 30, the ventral waist circumference portion 20 and the dorsal waist circumference portion 30 contract in the left-right direction.
  • the portion where the sweat absorbing portion 50 is provided is easily pulled, and is relatively easily stretched in the circumferential direction of the waist circumference opening BH. Therefore, as described above, the planar shape of the sweat absorbing portion 50 is maintained, and it becomes easy to fit the wearer's body on the surface. This makes it possible to improve the sweat absorption property of the diaper 1 (sweat absorbing portion 50). Even when the sweat absorbing portion 50 is not provided on the dorsal side but only on the ventral side, the planar shape of the sweat absorbing portion 50 is easily maintained, and the effect of improving the sweat absorbing performance on the ventral side can be obtained. Is possible. However, since the amount of sweating of the wearer is usually larger on the dorsal side than on the ventral side, it is more effective to provide the sweat absorbing portion 50 on the dorsal side as in the present embodiment.
  • the sweat absorbing portion 50 When the sweat absorbing portion 50 is provided with an opening in the diaper 1, the area of the opening provided per unit area of the weak sweat absorbing portion 60 is larger than the area of the opening provided per unit area of the sweat absorbing portion 50. To do so. With such a configuration, the rigidity of the weak sweat absorbing portion 60 is lower than the rigidity of the sweat absorbing portion 50, and when the diaper 1 contracts, the contraction amount of the weak sweat absorbing portion 60 is larger than the contraction amount of the sweat absorbing portion 50. Become. Therefore, since the weak sweat absorbing portion 60 tends to contract in the left-right direction, the sweat absorbing portion 50 is relatively easily extended in the left-right direction, and the sweat absorbing portion 50 easily maintains a flat shape.
  • the sweat absorbing portion 50 can be easily fitted to the wearer's skin on the surface, and the sweat absorbing performance of the sweat absorbing portion 50 can be improved.
  • the area of the opening of the sweat absorbing portion 50 can be measured, for example, by taking an image of a portion where the opening is formed in a state where the diaper 1 is extended (for example, a flat state in FIG. 2) and performing image analysis. it can.
  • the size and shape of each opening (hole) are the same, the size of the area is compared by measuring the number of openings provided per unit area of the sweat absorbing portion 50 and the weak sweat absorbing portion 60. Is also possible.
  • the sweat absorbing portion 50 is formed by laminating and joining the breathable sweat absorbing sheet 51 on the skin side surface of the dorsal waist circumference portion 30. Therefore, the material rigidity of the region where the sweat absorbing portion 50 is provided is higher than the material rigidity of the other region (weak sweat absorbing portion 60), and wrinkles and irregularities are less likely to be formed on the surface of the sweat absorbing portion 50. That is, the sweat-absorbing portion 50 is laminated with the breathable sweat-absorbing sheet 51, which is a separate sheet member from the seat members (skin-side sheet 31 and non-skin-side sheet 32) constituting the dorsal waist circumference portion 30. The rigidity becomes higher than the rigidity of the weak sweat absorbing portion 60. Therefore, the sweat absorbing portion 50 can easily maintain a flat shape, and by fitting the sweat absorbing portion 50 on the surface of the wearer's skin, the sweat absorbing performance can be further improved.
  • the opening 40 provided in the weak sweat absorbing portion 60 of the diaper 1 is a through hole that penetrates the ventral waist circumference portion 20 (dorsal waist circumference portion 30) in the thickness direction.
  • the opening 40 is provided in both seat members. Since the rigidity of the weak sweat absorbing portion 60 of the ventral waist circumference portion 20 is higher than that in the case of the above, the degree of contraction is also reduced. Then, when the weak sweat absorbing portion 60 becomes difficult to contract, the relative extension of the sweat absorbing portion 50 becomes small, and the sweat absorbing portion 50 may become difficult to maintain a flat shape.
  • the ventral waist circumference portion 20 (weak sweat absorbing portion 60) tends to contract as shown in FIG. 4B, and the sweat absorbing portion 50 is pulled based on the contraction of the weak sweat absorbing portion 60 and extends in the left-right direction. Makes it easier to maintain a planar shape. Therefore, the sweat absorbing portion 50 easily fits on the wearer's skin on the surface, and the sweat absorbing performance can be further improved.
  • the weak sweat absorbing portion 60 is provided with a through hole (opening 40), the air permeability is further improved, so that when the diaper 1 is worn, the weak sweat absorbing portion 60 causes stuffiness due to sweating and skin irritation. It becomes easier to suppress.
  • an opening 40 is provided in a region above the sweat absorbing portion 50 in the vertical direction.
  • a plurality of openings 40, 40 ... are provided in the upper end region of the ventral waist circumference portion 20, and the rigidity of the ventral waist circumference portion 20 is low in this region. Therefore, when the waist circumferences 20 and 30 contract in the left-right direction when the diaper 1 is worn, the upper end portion of the ventral waist circumference 20 contracts most, and as shown in FIG. 4B, the waist circumference is uneven in the thickness direction. Deformation occurs and wrinkles are likely to be formed. That is, a plurality of wrinkles along the vertical direction are formed side by side in the horizontal direction in the ventral region of the waist circumference opening BH.
  • the opening 40 is not provided in the region of the waist circumferences 20 and 30 that overlaps with the absorbent main body 10. In other words, the opening 40 is provided in a region that does not overlap with the absorbent body 10. If the opening 40 is provided in the area overlapping the absorbent main body 10, the impression that excrement such as urine absorbed in the absorbent main body 10 passes through the opening 40 and leaks to the outside. May be given to the user. On the other hand, in the diaper 1, since the absorbent main body 10 and the opening 40 do not overlap, it is unlikely to cause unnecessary worries to the user. Further, since the absorbent main body 10 is not sandwiched between the opening 40 and the wearer's skin, moisture such as sweat easily evaporates to the outside of the diaper 1 through the opening 40, causing stuffiness and rashes. It becomes easier to suppress.
  • ventral waist circumference 20 is provided with a flat elastic sheet 24 that can be expanded and contracted at least in the left-right direction.
  • an elastic force contractile force
  • the waist circumference portion 20 is bent in the vertical direction.
  • a plurality of linear elastic members (elastic members corresponding to the thread-like elastic members 23) such as rubber threads are arranged side by side so as to be separated in the vertical direction instead of the elastic sheet 24. It is assumed that it has been done.
  • the linear elastic member contracts, the distance between two linear elastic members adjacent to each other in the vertical direction may be shortened. Then, as the distance between the linear elastic members in the vertical direction is shortened, the ventral waist circumference portion 20 itself may be contracted in the vertical direction, so-called burr may occur. In such a case, the good fit of the ventral waist circumference 20 may be impaired, or the opening 40 may be blocked, resulting in stuffiness or a rash.
  • the elastic sheet 24 on the flat surface is provided, it is suppressed that the ventral waist circumference portion 20 is bent in the vertical direction in the region, and the fit is good. Can be realized.
  • the opening 40 is less likely to be closed, it is possible to prevent stuffiness and rashes from occurring when the diaper 1 is worn.
  • the sweat absorbing portion 50 is provided on one side (dorsal waist circumference portion 30) of the front and rear waist circumference portions 20 and 30, and the elastic sheet 24 is provided on the other side (ventral waist circumference portion 20).
  • a plurality of openings 40 that penetrate the elastic sheet 24 in the thickness direction are provided. Since the elastic sheet 24 is provided with the opening 40, the rigidity and stress of the elastic sheet 24 are lowered, so that the ventral waist circumference 20 is more likely to contract and wrinkles are more likely to be formed. As a result, sweat and heat can be efficiently transpired to the outside of the diaper 1 through the gap between the opening 40 and the wrinkles.
  • the sweat absorbing portion 50 provided on the dorsal waist circumference portion 30 is relatively easily stretched, and it is easy to maintain the flat shape. Therefore, the sweat absorption property of the sweat absorption unit 50 can be improved.
  • FIG. 5 is a plan view of a modified example of the unfolded and stretched diaper 1.
  • a plurality of openings 41 are provided in the dorsal waist circumference portion 30 outside the sweat absorbing portion 50 in the left-right direction and in a region overlapping the sweat absorbing portion 50 in the vertical direction. That is, the opening 41 is provided in the region between the sweat absorbing portion 50 and the side locking 5 in the left-right direction.
  • the opening 41 is a through hole having the same shape and size as the opening 40 and penetrating the skin side sheet 31 and the non-skin side sheet 32 constituting the dorsal waist circumference portion 30 in the thickness direction.
  • the opening 41 may be a hole having a shape and size different from that of the opening 40, and does not penetrate the skin-side sheet 31 and the non-skin-side sheet 32 in the thickness direction, but the skin-side sheet 31. And it may be provided on at least one of the non-skin side sheet 32. Further, the arrangement and number of the plurality of openings 41 are not limited to those shown in FIG. 5, and can be changed as appropriate.
  • the sweat absorbing portion 50 of the dorsal waist circumference portion 30 is relatively easily extended by contracting the ventral waist circumference portion 20, but in this modified example, both sides of the sweat absorbing portion 50 in the left-right direction are further extended. Area is likely to shrink. Therefore, since the sweat absorbing portion 50 is pulled more strongly on both sides in the left-right direction, the sweat absorbing portion 50 is extended in the left-right direction, and it becomes easy to maintain the planar shape. As a result, when the diaper 1 is worn, the sweat absorbing portion 50 can be easily fitted to the wearer's skin on the surface, and the sweat absorbing performance of the diaper 1 can be improved.
  • FIG. 6 is a plan view of the unfolded and extended diaper 2.
  • the diaper 2 of the second embodiment has a ventral sweat absorbing portion 55 provided on the ventral waist circumference portion 20 and a dorsal sweat absorbing portion 56 provided on the dorsal waist circumference portion 30 as the sweat absorbing portion 50.
  • the dorsal sweat absorbing portion 56 has the same configuration as the sweat absorbing portion 50 in the first embodiment.
  • the ventral sweat absorbing portion 55 also has basically the same configuration as the sweat absorbing portion 50 in the first embodiment. That is, the ventral sweat-absorbing portion 55 is formed by laminating a separate breathable sweat-absorbing sheet 51 or applying a hydrophilic agent 52 to a predetermined region on the ventral side surface of the ventral waist circumference portion 20. .. Since the configurations of the diaper 2 other than the sweat absorbing portions 55 and 56 are substantially the same as those of the diaper 1 of the first embodiment, detailed description of each portion will be omitted.
  • the sweat absorbing portion 50 (ventral sweat absorbing portion 55) is provided not only on the dorsal waist circumference 30 but also on the ventral waist circumference 20, the sweat absorbing performance on the ventral side is improved, and the diaper 2 as a whole absorbs sweat. Performance can be improved.
  • a plurality of openings 40 are provided in the upper region in the vertical direction with respect to the ventral sweat absorbing portion 55, so that the sweat absorbing property is improved. Good breathability is also maintained, and it is less likely to cause discomfort to the wearer when wearing the diaper 2.
  • the sweat absorbing portion 50 is set so that the area of the dorsal sweat absorbing portion 56 is larger than the area of the ventral sweat absorbing portion 55.
  • the vertical length L56 of the dorsal sweat absorbing portion 56 is longer than the vertical length L55 of the ventral sweat absorbing portion 55 (L56> L55). That is, the area of the dorsal sweat-absorbing portion 56 is larger than the area of the ventral sweat-absorbing portion 55.
  • the sweat absorbing portion 50 since the sweat absorbing portion 50 is not provided with an opening or the like in principle, the sweat absorbing portion 50 has a higher rigidity than the weak sweat absorbing portion 60 provided with the opening 40. That is, the sweat absorbing portion 50 is a region that is less likely to contract than the weak sweat absorbing portion 60 and is relatively easily stretched. As a result, the flat shape is easily maintained, and the sweat absorption performance can be enhanced by fitting the wearer's skin on the surface.
  • the sweat absorbing portions 50 are provided on both the ventral side and the dorsal side as in the diaper 2, the difference in rigidity between the ventral side and the dorsal side is unlikely to occur, and the sweat absorbing portion 50 is extended. It becomes difficult for the sweat absorbing portion 50 to maintain a flat shape. Therefore, in the diaper 2, the area of the dorsal sweat-absorbing portion 56 is made larger than the area of the ventral sweat-absorbing portion 55, so that the region having high rigidity on the ventral side is larger than that on the ventral side. As a result, the dorsal sweat-absorbing portion 56 is less likely to contract than the ventral sweat-absorbing portion 55, and it becomes easier to maintain the planar shape.
  • the sweat absorbing performance of the dorsal sweat absorbing portion 56 can be improved in the dorsal region where the amount of sweating is large, and the diaper 2 having good sweat absorbing performance as a whole can be realized. it can.
  • the dorsal sweat absorbing portion 56 is formed by laminating a separate breathable sweat absorbing sheet 51 in a predetermined region, and in the ventral waist circumference portion 20, the hydrophilic agent 52 is formed in the predetermined region. Is applied to form the ventral sweat-absorbing portion 55.
  • the highly rigid breathable sweat absorbing sheet 51 by laminating the highly rigid breathable sweat absorbing sheet 51, even if the area of the dorsal sweat absorbing portion 56 is smaller than the area of the ventral sweat absorbing portion 55, the highly rigid dorsal sweat absorbing portion 56 is flat. It is easy to maintain the shape, and it is possible to improve the sweat absorption performance on the dorsal side.
  • a diaper in which the ventral waist circumference portion 20 and the dorsal waist circumference portion 30 are separated and is a separate member is illustrated, but the inseam is between the ventral waist circumference portion 20 and the dorsal waist circumference portion 30. May be provided, and the ventral waist circumference portion 20 and the dorsal waist circumference portion 30 may be a continuous member.

Landscapes

  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Absorbent Articles And Supports Therefor (AREA)

Abstract

Couche jetable de type culotte (1) qui comprend un corps absorbant (10) et des parties de taille (20, 30) qui comprennent des éléments élastiques (23, 33) qui s'étirent dans la direction gauche-droite, des voiles côté peau (21, 31) qui sont disposés sur les côtés peau des éléments élastiques (23, 33) et des voiles côté opposé à la peau (22, 32) qui sont disposés sur les côtés opposés à la peau des éléments élastiques (23, 33). Chacune des parties de taille (20, 30) comporte une partie à faible absorption de sueur (60) et une partie à absorption de sueur (50) qui absorbe plus facilement la sueur de l'utilisateur que la partie à faible absorption de sueur (60), et dans chaque partie à faible absorption de sueur (60), des ouvertures (40) sont disposées sur le voile côté peau (21, 31) et/ou sur le voile côté opposé à la peau (22, 32).
PCT/JP2020/013453 2019-05-20 2020-03-25 Couche jetable de type culotte WO2020235213A1 (fr)

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JP2019-094779 2019-05-20
JP2019094779A JP7366587B2 (ja) 2019-05-20 2019-05-20 パンツ型使い捨ておむつ

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JP2022131817A (ja) * 2021-02-26 2022-09-07 ユニ・チャーム株式会社 吸収性物品

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JP2004358099A (ja) * 2003-06-06 2004-12-24 Kao Corp 吸収性物品
JP2010246901A (ja) * 2009-03-23 2010-11-04 Kao Corp 吸収性物品
JP2012228594A (ja) * 2007-11-30 2012-11-22 Daio Paper Corp 使い捨ておむつ
JP2013172863A (ja) * 2012-02-24 2013-09-05 Kao Corp 着用物品
JP2017113189A (ja) * 2015-12-22 2017-06-29 花王株式会社 使い捨ておむつ
WO2018116479A1 (fr) * 2016-12-22 2018-06-28 花王株式会社 Couche jetable
WO2018116478A1 (fr) * 2016-12-22 2018-06-28 花王株式会社 Article absorbant

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JP3820043B2 (ja) * 1998-12-28 2006-09-13 ユニ・チャーム株式会社 使い捨ておむつ
JP2001327534A (ja) * 2000-05-25 2001-11-27 Uni Charm Corp 使い捨て着用物品
JP4818757B2 (ja) * 2006-02-28 2011-11-16 ユニ・チャーム株式会社 使い捨ておむつ
JP5102504B2 (ja) * 2007-02-02 2012-12-19 ユニ・チャーム株式会社 吸収性物品
JP6208208B2 (ja) * 2015-12-22 2017-10-04 花王株式会社 使い捨ておむつ
JP2017175289A (ja) 2016-03-22 2017-09-28 キヤノン・コンポーネンツ株式会社 照明装置、イメージセンサユニット、画像読取装置および画像形成装置
WO2017175289A1 (fr) * 2016-04-05 2017-10-12 ユニ・チャーム株式会社 Article absorbant
JP6506492B1 (ja) * 2017-06-21 2019-04-24 花王株式会社 吸収性物品

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Publication number Priority date Publication date Assignee Title
JP2004358099A (ja) * 2003-06-06 2004-12-24 Kao Corp 吸収性物品
JP2012228594A (ja) * 2007-11-30 2012-11-22 Daio Paper Corp 使い捨ておむつ
JP2010246901A (ja) * 2009-03-23 2010-11-04 Kao Corp 吸収性物品
JP2013172863A (ja) * 2012-02-24 2013-09-05 Kao Corp 着用物品
JP2017113189A (ja) * 2015-12-22 2017-06-29 花王株式会社 使い捨ておむつ
WO2018116479A1 (fr) * 2016-12-22 2018-06-28 花王株式会社 Couche jetable
WO2018116478A1 (fr) * 2016-12-22 2018-06-28 花王株式会社 Article absorbant

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JP2020188875A (ja) 2020-11-26
JP7366587B2 (ja) 2023-10-23
CN113873977B (zh) 2023-09-19

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