WO2020026684A1 - 使い捨て着用物品 - Google Patents
使い捨て着用物品 Download PDFInfo
- Publication number
- WO2020026684A1 WO2020026684A1 PCT/JP2019/026438 JP2019026438W WO2020026684A1 WO 2020026684 A1 WO2020026684 A1 WO 2020026684A1 JP 2019026438 W JP2019026438 W JP 2019026438W WO 2020026684 A1 WO2020026684 A1 WO 2020026684A1
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- WIPO (PCT)
- Prior art keywords
- sheet layer
- sheet
- elastic member
- folded
- width direction
- Prior art date
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
- A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
- A61F13/49007—Form-fitting, self-adjusting disposable diapers
- A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
- A61F13/49017—Form-fitting, self-adjusting disposable diapers with elastic means the elastic means being located at the crotch region
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
- A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
- A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
- A61F13/49007—Form-fitting, self-adjusting disposable diapers
- A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
- A61F13/49014—Form-fitting, self-adjusting disposable diapers with elastic means the elastic means is located at the side panels
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
- A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
- A61F13/494—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
- A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
- A61F13/494—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means
- A61F13/49406—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
- A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
- A61F13/494—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means
- A61F13/49406—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region
- A61F13/49413—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region the edge leakage prevention means being an upstanding barrier
- A61F13/4942—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region the edge leakage prevention means being an upstanding barrier the barrier not being integral with the top- or back-sheet
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
- A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
- A61F13/496—Absorbent articles specially adapted to be worn around the waist, e.g. diapers in the form of pants or briefs
Definitions
- the present invention relates to a disposable wearing article with improved feel (flexibility, cushioning property) on the side of the crotch.
- the pants-type disposable diaper has an outer body constituting at least a waist portion of a front body and a back body, and an inner body including an absorber attached to the outer body so as to extend from the front body to the back body, Generally, a waist opening and a pair of left and right leg openings are formed by joining a side seal portion by joining both sides of a front body exterior body and both sides of a rear body exterior body. (For example, see Patent Document 1).
- the side portion of the crotch portion was formed only of the exterior body, but recently, the side portion of the crotch portion is formed by the side portion of the interior body. (For example, see Patent Document 1).
- a general tape-type disposable diaper has a crotch portion including the center in the front-rear direction, a ventral portion extending forward from the center in the front-rear direction, and a back portion extending rearward from the center in the front-rear direction.
- the side portion has a main body portion located between the left and right wing portions, at least the back side portion has a wing portion extending to the left and right sides in the width direction beyond the crotch portion, and the wing portion is an outer surface of the abdomen portion And a connecting portion detachably connected to the connecting portion.
- the wing portion is turned from both sides of the waist to the outer surface of the ventral portion, and the connecting portion of the wing portion is connected to the outer surface of the ventral portion.
- a tape-type disposable diaper an integrated type in which a side flap extending laterally from a side edge of an absorber is cut off along a leg circumference, and an uncut portion is left as a wing portion (for example, see Patent Document 1) 2)
- a separately manufactured connecting tape is attached to a side edge of an assembly forming a main body portion, and a separate type in which the connecting tape serves as a wing portion (for example, see Patent Documents 3 and 4) is known.
- a separate type there has been proposed a type in which a unit including left and right wing portions is attached to an assembly forming a main body portion (for example, see Patent Document 6).
- the side portion of the crotch portion is formed by the side portion of the side flap.
- an elongated elastic member is incorporated between the sheet layers on the side of the crotch portion along the direction around the leg or in the front-rear direction in order to ensure the fit to the leg. It is known.
- a main problem of the present invention is to improve the feel of the side of the crotch part.
- the disposable wearing article which solved the above-mentioned subject is as follows. ⁇ First aspect> On both sides of the crotch, with side flaps without absorbers, The side flap has a side elastic region in which one or a plurality of elongated side elastic members are provided along the front-rear direction and spaced apart from each other, In disposable wearing articles, The side flap has a hollow portion extending in the front-rear direction along a side edge thereof, Due to the contraction of the side elastic member, a portion including the hollow portion of the side flap is contracted in the front-rear direction to form a side gather. Disposable wearing article characterized by the above-mentioned.
- the portion including the hollow portion along the side flap is contracted in the front-rear direction due to the contraction of the side elastic member, and the folds of the side gathers are formed side by side in the front-rear direction.
- the folds of the side gathers are formed by the hollow portion largely expanding, and become large and soft (that is, rich in cushioning properties). Therefore, the large and soft folds make the side of the crotch part feel good (fluffy and fluffy).
- the side flap has three or more sheet layers including a first sheet layer facing the front side of the side elastic member and a second sheet layer facing the back side of the side elastic member, and has the most front sheet layer. And has a non-joined portion where at least one of the backmost sheet layers and the inner sheet layer overlapping therewith are not joined, The non-joined portion continues in the front-rear direction in a width direction range including a region between a side elastic member positioned at the side most and a side edge of the side flap, A gap between at least one of the uppermost sheet layer and the lowermost sheet layer and an inner sheet layer overlapping the same is closed on both sides in the width direction of the non-joined portion, whereby the hollow portion is formed. , The disposable wearing article of the first aspect.
- the side flap has a layer structure of three or more layers, and a non-joined portion is formed in which at least one of the most front sheet layer and the most back sheet layer and the inner sheet layer overlapping therewith are not joined.
- a hollow portion surrounded by the sheet layer is formed.
- the non-joined portion extends in the front-rear direction in the width direction range including the region between the side elastic member positioned at the side most and the side edge of the side flap (the same or more width direction range as the region). in the process of.
- a large and soft fold is formed in a portion including the side elastic member located on the side most side.
- the hollow portion extends from the side edge of the side flap to a position spaced apart by 2 mm or more from the side edge toward the center in the width direction.
- the position and width of the hollow portion may be determined as appropriate, but in a normal case, it is preferably within the range of this embodiment.
- a portion of the side flap from the side edge to a center side of 2 to 15 mm in the width direction does not include the side elastic member and includes part or all of the hollow portion.
- the disposable wearing article according to any one of the first to third aspects.
- the hollow portion is provided in a plurality so as to overlap in the thickness direction,
- the disposable wearing article according to any one of the first to fifth aspects.
- the folds are formed independently also in the portion located between the plurality of hollow portions, and the folds overlap, so that the folds having better cushioning properties are formed on the side portions of the side flaps. .
- the side flap has a folded sheet layer that is folded from a front side of the hollow portion to a side edge of the side flap and reaches a back side of the hollow portion,
- the hollow portion extends laterally to a folded position of the folded sheet layer,
- the disposable wearing article according to any one of the first to sixth aspects.
- the hollow portion is formed by the folded sheet layer because the cushioning property of the fold formed in the hollow portion is particularly improved by the restoring force against the folding.
- the side flap has a double folded sheet layer folded at a side edge of the side flap,
- the frontmost sheet layer and the rearmost sheet layer in the side flaps are a front part and a rear part, respectively, with respect to a folding position of the folded sheet layer located outside
- the side elastic member has a width wider than a folding position between the front side portion with the folding position of the folded sheet layer positioned outside and the front side portion with the folding position of the folded sheet layer located inside. It is fixed at a position away from the center of the direction, A hollow portion is formed between each of the sheet layers because not all of the sheet layers adjacent in the thickness direction are joined to each other between the side elastic member located at the side most and the side edge of the side flap.
- the side flap has a double folded sheet layer folded at a side edge of the side flap,
- the frontmost sheet layer and the rearmost sheet layer in the side flaps are a front part and a rear part, respectively, with respect to a folding position of the folded sheet layer located outside
- the side elastic member is fixed at a position separated from the folding position by the folding position of the folded sheet layer located inside, between the front side portion and the back side portion, to a position closer to the center in the width direction than the folding position, Between the side elastic member located at the sidemost side and the side edge of the side flap, the frontmost sheet layer and the front side portion are joined at the folding position of the folded sheet layer located inside.
- a hollow portion is formed between the sheet layers, and the backmost sheet layer is joined to a backside portion at a folding position of the folded sheet layer located inside.
- the rising gather includes a gather sheet that is folded in two at the tip to form a two-layer structure, and an elongated gather elastic member provided along at least a front-end portion between the layers of the two-layer structure at the tip.
- the double folded sheet layer is the first portion and the second portion of the gather sheet,
- the disposable wearing article according to the seventh or eighth aspect.
- a rising gather In disposable wearing articles, it is common to provide a rising gather as in this embodiment. That is, a general rising gather has a gather sheet that is folded in two at the tip end to form a two-layer structure. Therefore, it is preferable to extend the two-layer structure of the gather sheet and fold it at the side edge to provide the above-mentioned hollow portion. As a result, folds having better cushioning properties are formed on the side portions of the side flaps with less sheet material.
- a plurality of the side elastic members are provided at intervals in the width direction, The elongation rate of the side elastic member in the expanded and contracted side region in the expanded state is lower as the position is closer to the side, The disposable wearing article according to any one of the first to tenth aspects.
- An exterior body constituting at least a waist portion of a front body and a back body, an interior body containing an absorbent body attached to the exterior body so as to extend from the front body to the back body, a waist opening, and a pair of left and right sides
- a pants-type disposable wearing article having a leg opening, On both sides of the inner body, the side flaps are provided, The disposable wearing article according to any one of the first to eleventh aspects.
- a front exterior body constituting at least a waist portion of the front body and a rear exterior body constituting at least a waist portion of the rear body are separately provided, and the front exterior body and the rear exterior body are separated in the front-rear direction,
- the interior body extends in the front-rear direction from the front exterior body to the rear exterior body, and is joined to the front exterior body and the rear exterior body, respectively.
- a side seal portion in which both sides of the front exterior body and both sides of the rear exterior body are joined, a waist opening and a pair of left and right leg openings,
- a lower edge of a wing region extending on both sides of the inner body in the front exterior body and the rear exterior body is an upper edge of the leg opening
- the lower end of the wing area has a lower end elastic area in which one or a plurality of elongated lower end elastic members are provided along the width direction and spaced apart from each other,
- the lower end of the wing region has a hollow portion extending in the width direction along the lower edge thereof, Due to the contraction of the lower end elastic member, a portion including the hollow portion at the lower end of the wing region contracts in the width direction to form a lower end gather,
- the disposable wearing article according to the twelfth aspect.
- the portion including the hollow portion along the lower edge of the wing region contracts in the width direction due to the contraction of the lower end elastic member, and the lower end gather is formed. That is, the folds of the lower end gathers are formed side by side in the width direction at the portion including the hollow portion at the lower end of the wing region.
- the fold of the lower end gather is formed by the hollow portion largely expanding, and becomes largely soft (that is, rich in cushioning property). . Therefore, the touch at the lower end portion of the wing region of the exterior body becomes good (fluffy and fluffy), and the above-mentioned touch at the side portion of the side flap becomes good. The feel of the entire edge is good.
- FIG. 2 is a sectional view taken along line 2-2 of FIG. 1.
- FIG. 3 is a sectional view taken along line 3-3 of FIG.
- FIG. 4A is a sectional view taken along line 4-4 of FIG. 1
- FIG. 4B is a sectional view taken along line 5-5 of FIG.
- It is a perspective view of a pants type disposable diaper. It is a top view which shows the outer surface of the interior body of an expansion state with the outline of an exterior body.
- FIG. 2 is a sectional view of another example corresponding to the section 2-2 in FIG. 1.
- FIG. 3 is a sectional view of another example corresponding to the section 3-3 in FIG. 1;
- FIG. 4 is an enlarged sectional view of a main part of FIG. 3. It is a principal part expanded sectional view of FIG.
- FIG. 4A is a sectional view taken along line 4-4 of FIG. 1
- FIG. 4B is a sectional view taken along line 5-5 of FIG.
- It is a perspective view of a pants type disposable diaper. It is sectional drawing of a front exterior body and a rear exterior body.
- FIG. 4 is a sectional view of another example corresponding to the section 4-4 in FIG. 1;
- the dot pattern portion in the cross-sectional view indicates an adhesive as a joining means for joining each component located on the front side and the back side, and is a solid, bead, curtain, summit or spiral application of hot melt adhesive, or a pattern coating. (Transfer of hot melt adhesive in letterpress system) or the like, or the fixed part of the elastic member is formed by applying to the outer peripheral surface of the elastic member such as a comb gun or a wrapping instead or together with this. is there.
- hot-melt adhesive examples include EVA-based, adhesive rubber-based (elastomer-based), olefin-based, and polyester / polyamide-based adhesives, but can be used without any particular limitation.
- a joining means for joining the constituent members means by material welding such as heat sealing or ultrasonic sealing can be used.
- FIGS. 1 to 6 show an example of a pants-type disposable diaper.
- This pants-type disposable diaper includes a rectangular front exterior body 12F constituting at least a waist part of a front body F and a rectangular rear exterior body 12B constituting at least a waist part of a rear body B; And an interior body 200 provided inside the exterior bodies 12F and 12B so as to extend to the rear exterior body 12B through the portion.
- Both side portions of the front exterior body 12F and both sides of the rear exterior body 12B are joined to form a side seal portion 12A, whereby the opening formed by the front and rear ends of the exterior bodies 12F and 12B is formed by the wearer.
- the inner body 200 is a part that absorbs and retains excretions such as urine
- the outer bodies 12F and 12B are parts that support the inner body 200 with respect to the wearer's body.
- Reference numeral Y indicates the overall length of the diaper in the deployed state (length in the front-back direction from the edge of the waist opening WO of the front body F to the edge of the waist opening WO of the back body B), and reference numeral X indicates the diaper in the deployed state. Shows the full width of.
- the pants-type disposable diaper has a waist region T defined as a front-rear range (a front-rear range from the waist opening WO to the upper end of the leg opening LO) having the side seal portion 12A, and a front-rear direction of a portion forming the leg opening LO.
- An intermediate region L defined as a range (between the front-rear region having the side seal portion 12A of the front body F and the front-rear region having the side seal portion 12A of the rear body B).
- the waist area T can be conceptually divided into a “waist portion” W, which conceptually forms the edge of the waist opening, and a “waist lower portion” U, which is a lower portion.
- the waist opening WO side is more waist than the boundary closest to the waist opening WO side.
- the waist extending portion 12E which extends toward the waist opening WO side from the absorber 56 or the interior body 200 becomes the waist portion W.
- the length in the front-rear direction differs depending on the size of the product and can be appropriately determined.
- the waist portion W can be 15 to 40 mm, and the lower waist portion U can be 65 to 120 mm.
- both side edges of the intermediate region L are constricted in a U-shape or a curved shape along the circumference of the leg of the wearer, and this is a portion where the leg of the wearer is put.
- the unfolded pants-type disposable diaper has a substantially hourglass shape as a whole.
- the inner body 200 can have any shape, but is rectangular in the illustrated example. As shown in FIGS. 3 to 5, the inner body 200 includes a top sheet 30 on the body side, a liquid impermeable sheet 11, and an absorbing element 50 interposed therebetween. Yes, it is the main body that performs the absorption function. Reference numeral 40 denotes an intermediate sheet provided between the top sheet 30 and the absorbing element 50 in order to promptly transfer the liquid that has passed through the top sheet 30 to the absorbing element 50, and reference numeral 60 denotes an interior body. In order to prevent the excrement from leaking to both sides of the inner body 200, rising gathers 60 extending from both sides of the inner body 200 so as to be in contact with the circumference of the leg of the wearer are shown.
- the top sheet 30 has a property of permeating a liquid, and examples thereof include a perforated or non-porous nonwoven fabric and a porous plastic sheet. Further, the top sheet 30 may be composed of one sheet or a laminated sheet obtained by laminating two or more sheets. Similarly, the top sheet 30 may be composed of one sheet or two or more sheets in the planar direction.
- Both sides of the top sheet 30 may be folded back at the side edges of the absorbing element 50, or may protrude laterally from the side edges of the absorbing element 50 without being folded.
- the top sheet 30 may be fixed to a member adjacent to the back side by a joining means using material welding such as heat sealing or ultrasonic sealing or a hot melt adhesive for the purpose of preventing displacement of the top sheet 30 with respect to the back side member. desirable.
- the top sheet 30 is fixed to the surface of the intermediate sheet 40 and the surface of the portion of the packaging sheet 58 located on the front side of the absorber 56 by a hot melt adhesive applied to the back surface.
- an intermediate sheet (also called a “second sheet”) 40 having a higher liquid permeation speed than the top sheet 30 can be provided.
- the intermediate sheet 40 is used to quickly transfer the liquid to the absorber 56 to enhance the absorption performance of the absorber 56, and to prevent the absorbed liquid from returning from the absorber 56.
- the intermediate sheet 40 can be omitted.
- the intermediate sheet 40 examples include the same material as the top sheet 30, spunlace nonwoven fabric, spunbonded nonwoven fabric, SMS nonwoven fabric, pulp nonwoven fabric, a mixed sheet of pulp and rayon, point-bonded nonwoven fabric, and crepe paper.
- an air-through nonwoven fabric is preferable because it is bulky.
- the resin used for the core may be polypropylene (PP), but polyester (PET) having high rigidity is preferable.
- Basis weight is preferably 17 ⁇ 80g / m 2, more preferably 25 ⁇ 60g / m 2.
- the thickness of the raw material fiber of the nonwoven fabric is preferably 2.0 to 10 dtex.
- the intermediate sheet 40 in the illustrated example is arranged at the center shorter than the width of the absorber 56, but may be provided over the entire width.
- the length in the front-rear direction of the intermediate sheet 40 may be the same as the entire length of the diaper, may be the same as the length of the absorbing element 50, or may be within a short range centered on the liquid receiving area.
- the intermediate sheet 40 may be fixed to a member adjacent to the back side by a joining means using material welding such as heat sealing or ultrasonic sealing, or a hot melt adhesive for the purpose of preventing displacement of the intermediate sheet 40 with respect to the member on the back side. desirable.
- the intermediate sheet 40 is fixed to the surface of a portion of the packaging sheet 58 located on the front side of the absorber 56 by a hot melt adhesive applied to the back surface.
- liquid impermeable sheet 11 is not particularly limited, for example, a plastic film made of an olefin resin such as polyethylene or polypropylene, a laminated nonwoven fabric having a plastic film on the surface of a nonwoven fabric, a plastic film And a laminated sheet in which a non-woven fabric or the like is overlapped and joined.
- a liquid impermeable and moisture permeable material which is preferably used from the viewpoint of preventing stuffiness.
- a microporous plastic film obtained by kneading an inorganic filler in an olefin-based resin such as polyethylene or polypropylene, forming a sheet, and then stretching in a uniaxial or biaxial direction. Is widely used.
- non-woven fabrics using micro denier fibers methods such as strengthening leakage prevention by reducing the voids of the fibers by applying heat or pressure, and applying a highly water-absorbent resin or a hydrophobic resin or a water-repellent agent
- a liquid-impermeable sheet without using a plastic film can be used as the liquid-impermeable sheet 11, but has a sufficient adhesive strength at the time of bonding with a cover nonwoven fabric 13 to be described later via a hot melt adhesive. It is desirable to use a resin film in order to obtain the following.
- the liquid-impermeable sheet 11 has a width that fits on the back side of the absorbing element 50 as shown in the drawing, and in order to enhance leakage prevention, the liquid impervious sheet 11 is wrapped around both sides of the absorbing element 50 to form It can also extend to both sides. It is appropriate that the width of the extending portion is about 5 to 20 mm on each of the left and right sides.
- the absorbent element 50 has an absorbent body 56 and a packaging sheet 58 that wraps the absorbent body 56 as a whole.
- the packaging sheet 58 can be omitted.
- the absorber 56 can be formed by an aggregate of fibers.
- the fiber aggregate include a filament aggregate obtained by spreading a tow (fiber bundle) of synthetic fibers such as cellulose acetate, as necessary, in addition to fibers obtained by stacking short fibers such as cotton-like pulp and synthetic fibers. Can also be used.
- the fiber basis weight can be, for example, about 100 to 300 g / m 2 when stacking cottony pulp or short fibers, and about 30 to 120 g / m 2 for filament aggregates, for example. Can be.
- the fineness of the synthetic fiber is, for example, 1 to 16 dtex, preferably 1 to 10 dtex, and more preferably 1 to 5 dtex.
- the filament may be a non-crimped fiber, but is preferably a crimped fiber.
- the degree of crimp of the crimped fiber can be, for example, about 5 to 75 pieces, preferably about 10 to 50 pieces, more preferably about 15 to 50 pieces per 2.54 cm. Further, crimped fibers uniformly crimped can be used. It is preferable that superabsorbent polymer particles are dispersed and held in the absorber 56.
- the absorber 56 may have a rectangular shape. However, as shown in FIG. 7 and the like, if the absorber 56 has an hourglass shape having a narrowed portion 56N narrower than the front and rear sides at the middle in the front and rear direction, the absorber 56 itself may be used. This is preferable because the fit of the rising gather 60 around the legs is improved.
- the size of the absorber 56 can be appropriately determined as long as it extends in the front-rear and left-right directions of the urination port position. However, it is preferable that the absorber 56 extend in the front-rear direction LD and the width direction WD to the periphery of the inner body 200 or its vicinity. .
- Reference numeral 56X indicates the entire width of the absorber 56.
- the absorber 56 can contain superabsorbent polymer particles in a part or the whole thereof.
- the superabsorbent polymer particles include “powder” in addition to “particles”.
- the superabsorbent polymer particles 54 those used in this type of disposable diaper can be used as they are, for example, by sieving using a standard sieve of 500 ⁇ m (JIS Z8801-1: 2006) (shaking for 5 minutes). It is desirable that the proportion of the particles remaining on the screen is 30% by weight or less, and the proportion of the particles remaining on the screen is sieved using a 180 ⁇ m standard sieve (JIS Z8801-1: 2006) (shaking for 5 minutes). It is desirably 60% by weight or more.
- the material of the superabsorbent polymer particles can be used without any particular limitation, but those having a water absorption of 40 g / g or more are preferred.
- the superabsorbent polymer particles include starch-based, cellulosic and synthetic polymer-based particles, such as starch-acrylic acid (salt) graft copolymer, saponified starch-acrylonitrile copolymer, and crosslinking of sodium carboxymethyl cellulose. Or an acrylic acid (salt) polymer can be used.
- the shape of the superabsorbent polymer particles is preferably in the form of a commonly used powder, but other shapes can also be used.
- the superabsorbent polymer particles those having a water absorption rate of 70 seconds or less, particularly 40 seconds or less are suitably used. If the water absorption speed is too slow, the so-called reversion in which the liquid supplied into the absorber 56 returns to the outside of the absorber 56 easily occurs.
- the superabsorbent polymer particles those having a gel strength of 1000 Pa or more are preferably used. Thereby, even when the bulky absorber 56 is used, the sticky feeling after absorbing the liquid can be effectively suppressed.
- the basis weight of the superabsorbent polymer particles can be appropriately determined according to the absorption required for the use of the absorber 56. Therefore, although it cannot be said unconditionally, it can be 50 to 350 g / m 2 .
- the basis weight of the polymer is less than 50 g / m 2, it is difficult to secure the absorption amount. If it exceeds 350 g / m 2 , the effect is saturated.
- tissue paper in particular, crepe paper, nonwoven fabric, polylaminated nonwoven fabric, a sheet having small holes, or the like can be used. However, a sheet from which the superabsorbent polymer particles do not escape is desirable.
- a nonwoven fabric is used instead of crepe paper, hydrophilic SMS nonwoven fabric (SMS, SSMMS, etc.) is particularly suitable, and the material thereof can be polypropylene, polyethylene / polypropylene composite material, or the like.
- the basis weight is preferably 5 to 40 g / m 2 , particularly preferably 10 to 30 g / m 2 .
- the packaging structure of the packaging sheet 58 can be determined as appropriate. However, from the viewpoint of ease of manufacturing and prevention of leakage of the highly absorbent polymer particles from the front and rear edges, a tube is formed so as to surround the front and back surfaces and both side surfaces of the absorber 56. It is preferable to wind in a shape, and to make the front and rear edges protrude from the front and rear of the absorber 56, and to join the overlapping portion and the overlapping portion of the front and rear protruding portions by a joining means such as hot melt adhesive or material welding.
- the rising gather 60 has a rising portion 68 that rises from the side of the inner body 200, and the rising portion 68 contacts the range from the groin of the wearer to the buttocks through the leg circumference to prevent side leakage. Things.
- the rising gather 60 in the illustrated example is such that the root-side portion 60B rises diagonally toward the center in the width direction, and the tip-side portion 60A rises diagonally outward from the middle in the width direction.
- the present invention is not limited thereto, and appropriate changes can be made, such as the one standing upright on the center side in the width direction as a whole.
- the rising gather 60 in the illustrated example folds a band-shaped gather sheet 62 having a length equal to the length in the front-rear direction of the inner body 200 in a width direction WD at a leading end portion and folds the folded sheet into two.
- a plurality of elongated gather elastic members 63 are fixed at intervals in the width direction WD between the folded portion and the sheet in the vicinity thereof while being extended along the longitudinal direction.
- a proximal end (an end opposite to the sheet folded portion in the width direction WD) of the rising gather 60 opposite to the distal end is formed as a root portion 65 fixed to a side portion of the interior body 200.
- a portion other than the root portion 65 is a main body portion 66 (a portion on the folded portion side) extending from the root portion 65. Further, the main body portion 66 has a root portion 60B extending toward the center in the width direction, and a distal portion 60A that is folded back at the tip of the root portion 60B and extends outward in the width direction.
- the front and rear ends of the main body portion 66 are in a laid state, and are formed as the laid down portions 67 fixed to the side surface of the top sheet 30, while the middle portion in the front and rear direction located therebetween is not fixed.
- a raised elastic member 63 along the front-rear direction LD is fixed to at least the distal end of the raised portion 68 in an extended state.
- the rising portion 68 rises by the contraction force of the gather elastic member 63 so as to come into contact with the skin as shown by the arrow in FIG.
- the main body portion 66 is formed by a base portion 60B extending toward the center in the width direction, and a bent portion bent at the tip of the base portion 60B and extending toward the outside in the width direction.
- the tip side portion 60A and the base side portion 60B are joined in the fall state at the fall section 67, and the base section 60B is joined to the top sheet 30 in the fall state.
- the joining of the opposing surfaces in the falling part 67 can be performed by at least one of a hot melt adhesive by various coating methods and a material welding method such as heat sealing or ultrasonic sealing.
- the joining of the root portion 60B and the top sheet 30 and the joining of the distal portion 60A and the root portion 60B may be performed by the same means or by different means.
- the gather sheet 62 may be made of a spunbonded nonwoven fabric (SS, SSS, etc.), an SMS nonwoven fabric (SMS, SSMMS, etc.), a soft nonwoven fabric with excellent uniformity and concealment, such as a melt-blown nonwoven fabric. What has been subjected to the treatment can be suitably used.
- the basis weight of the nonwoven fabric is preferably about 10 to 30 g / m 2 .
- a thread rubber or the like can be used as the gather elastic member 63.
- the thickness is preferably 470 to 1240 dtex, and more preferably 620 to 940 dtex.
- the elongation percentage of the gathered elastic member 63 in the mounted state is preferably 150 to 350%, more preferably 200 to 300%.
- the number of the gather elastic members 63 is preferably 2 to 6, more preferably 3 to 5.
- the arrangement interval 60d of the gather elastic members 63 is suitably 3 to 10 mm. With this configuration, it is easy to hit the skin in the area where the gather elastic members 63 are arranged.
- the gather elastic members 63 may be arranged not only on the tip side but also on the base side.
- a hot-melt adhesive, a heat seal, an ultrasonic wave, etc. by various coating methods are used for bonding the inner layer and the outer layer of the gather sheet 62 and fixing the gather elastic member 63 sandwiched therebetween.
- At least one of fixing means by welding a material such as a seal can be used. If the entire surfaces of the inner layer and the outer layer of the gather sheet 62 are bonded together, the flexibility is impaired. Therefore, it is preferable that the portion other than the bonding portion of the gather elastic member 63 is not bonded or is weakly bonded.
- the hot melt adhesive is applied only to the outer peripheral surface of the gather elastic member 63 by applying means such as a comb gun or a shrink wrap nozzle, and the hot melt adhesive is applied between the inner layer and the outer layer of the gather sheet 62 so that the gather elastic member 63 is formed. Only the hot melt adhesive applied to the outer peripheral surface of the gather sheet 62 fixes the gather elastic member 63 to the inner layer and the outer layer of the gather sheet 62 and fixes the inner layer and the outer layer of the gather sheet 62. I have.
- At least one of a hot melt adhesive by various coating methods and a material welding method such as heat sealing or ultrasonic sealing can be used.
- each side flap 70 has a hollow portion 70H extending along the side edge thereof in the front-rear direction LD. Is preferable.
- Each side flap 70 has a side elastic region SG in which one or a plurality of elongated side elastic members 73 are provided along the front-back direction LD and spaced from each other.
- the portion of the side flap 70 including the hollow portion 70H contracts in the front-back direction LD, and a side gather in which a large number of folds are arranged in the front-back direction LD is formed.
- the side gathers are formed in the portion including the hollow portion 70H in the side flap 70, as shown in FIG. Rich in nature). Therefore, the large and soft folds make the side of the crotch part feel good (fluffy and fluffy).
- the side flap 70 has a first sheet layer 71 facing the back side of the side elastic member 73 and a second sheet layer 72 facing the front side of the side elastic member 73 in order to fix the side elastic member 73. preferable.
- the sheet material forming the first sheet layer 71 and the second sheet layer 72 is not particularly limited, and an appropriate nonwoven fabric such as the nonwoven fabric usable in the rising gathers 60 and the exterior bodies 12F and 12B can be selected. .
- the first sheet layer 71 and the second sheet layer 72 are formed by extending the gather sheet 62 of the rising gather 60 as described later.
- the side flap 70 may be constructed by adding a dedicated sheet material 79 different from the rising gathers 60.
- the front and rear ends of the side flaps 70 coincide with the front and rear ends of the rising gathers 60 (that is, in this case, the front and rear ends of the interior body 200), but in the latter case, the front and rear ends of the side flaps 70 rise and fall. It may be located on the center side in the front-rear direction from the end.
- the side elastic member 73 is not particularly limited, and an elongated elastic member similar to the gather elastic member 63 described above can be used.
- the elongation rate of the side elastic member 73 in the expanded side stretch region SG is preferably 150% to 350%, and more preferably 200% to 270%.
- the number of the side elastic members 73 is preferably 2 to 16, more preferably 6 to 10. It is appropriate that the arrangement interval of the side elastic members 73 is 5 to 10 mm.
- the extension rate of the side elastic members 73 in the expanded and contracted side elastic regions SG is lower as the side elastic members 73 are located sideways.
- the side stretchable region SG toward the skin side becomes slower, and the side stretchable region SG is more likely to be in an appropriate wearing state. If the side elastic region SG rises sharply, the side flaps 70 may be folded inward and pinched between the legs and the surface of the disposable wearing article, leading to leakage.
- the side elastic member 73 is fixed to the first sheet layer 71 and the second sheet layer 72.
- material welding such as hot melt adhesive HM by various coating methods, heat sealing, ultrasonic sealing, or the like. Can be used. If the bonding area between the first sheet layer 71 and the second sheet layer 72 is large, the flexibility is impaired. Therefore, it is preferable that the portions other than the bonding portions of the side elastic members 73 are not bonded or are weakly bonded.
- the hot melt adhesive HM is applied only to the outer peripheral surface of the side elastic member 73 by applying means such as a comb gun or a shrink wrap nozzle, and is sandwiched between the first sheet layer 71 and the second sheet layer 72.
- the structure for fixing between the 72 is provided.
- the mounting range of the side elastic member 73 in the front-back direction LD is from a portion overlapping the front exterior body 12F to a portion overlapping the rear exterior body 12B. It is preferable that the range in the front-back direction LD of the side expansion / contraction region SG is the same as or larger than the range in the front-back direction LD of the non-joined portion 77 described later. Further, it is preferable that the range of the side expansion / contraction region SG in the front-back direction LD is the same as the contracted portion of the rising gather 60 by the gather elastic member 63 or extends to both front and rear sides.
- the side flap 70 preferably has three or more sheet layers including the first sheet layer 71 and the second sheet layer 72. That is, it is preferable to have at least one inner sheet layer 76 located between the frontmost sheet layer 74 and the rearmost sheet layer 75 in addition to the innermost sheet layer 74 and the rearmost sheet layer 75. Some or all of these sheet layers may be formed of separate sheet materials, respectively, or one sheet material may be formed by turning once or a plurality of times.
- the inner sheet layer 76 can be appropriately selected from the above-described gather sheet 62, the liquid-impermeable sheet 11, or the same nonwoven fabric as the exterior bodies 12F and 12B described later.
- the liquid impermeable sheet 11 can be formed by appropriately extending or folding the sheet.
- the structure of the hollow portion 70H is not particularly limited, but it can be formed, for example, by the following laminated structure of sheet layers. That is, in the side flap 70 in the illustrated example, a non-joined portion 77 is formed in which at least one of the sheet layer 74 on the front side and the sheet layer 75 on the back side and the internal sheet layer 76 overlapping therewith are not joined.
- the non-joined portion 77 is a portion that continuously or intermittently continues in the front-rear direction LD in the width direction WD including a region between the side elastic member 73 located at the side most and the side edge of the side flap 70. is there.
- the non-joined portion 77 joins some or all other layers. Or all the sheet layers in the thickness direction may be non-joined.
- the portion where the outermost sheet layer 74 and the inner sheet layer 76 overlapping therewith is not joined is the side elasticity that is the most lateral from the side edge. Until the fixing position of the member 73, the portion where the rearmost sheet layer 75 and the inner sheet layer 76 overlapping therewith is not joined continues to the center in the width direction.
- the outermost sheet layer 74 and the inner sheet layer 76 overlapping therewith are not joined, and the innermost sheet layer 75 and the inner sheet layer overlapping therewith are not joined.
- the portion that is not joined to the layer 76 continues from the side edge to the center in the width direction from the position where the side elastic member 73 is most laterally fixed, but the former continues to the center in the width direction. I have.
- the dimension of the non-joined portion 77 in the width direction WD can be appropriately determined, but is preferably 2 to 15 mm, and particularly preferably 5 to 10 mm. That is, the dimension of the hollow portion 70H in the width direction WD is preferably 2 mm or more. As shown in the example of the drawing, when the raised gathers 60 are provided, the edge of the non-joined portion 77 on the center side in the width direction WD is located on the side of the boundary between the root portion 65 and the main body portion 66 (starting point of rising). Is preferred.
- the dimension of the non-joined portion 77 in the front-rear direction LD is preferably 30% or more, and more preferably 40% or more, of the total product length Y. Further, in the case of a pants-type disposable wearing article in which the front exterior body 12F and the rear exterior body 12B are separated as in the illustrated example, the non-joined portion 77 is moved in the front-rear direction LD until the front exterior body 12F and the rear exterior body 12B respectively overlap. It is preferred that it extends. In this case, it is preferable that the non-joined portion 77 extends over the entire longitudinal direction LD of the interior body 200.
- the non-joined portion 77 extends only to a position between the front and rear edges of the interior body 200 and the elastic members 16 and 19 of the front exterior body 12F and the rear exterior body 12B that are closest to the leg openings LO. Is also preferred. Further, the non-joined portion 77 is formed between the elastic members 16 and 19 of the front exterior body 12F and the rear exterior body 12B that are closest to the leg opening LO and the edge of the leg opening LO (the rear edge of the front exterior body 12F and the front edge of the rear exterior body 12B). The edge may extend only to the position between the edge and the edge.
- the gap between at least one of the frontmost sheet layer 74 and the rearmost sheet layer 75 and the internal sheet layer 76 overlapping therewith is closed.
- one side of the gap of the non-joined portion 77 can be closed by folding the sheet material forming the frontmost sheet layer 74 or the rearmost sheet layer 75 at the side edge of the side flap 70.
- the other side of the gap of the non-joined portion 77 can be closed by joining the sheet layers adjacent in the thickness direction at an appropriate position using a hot melt adhesive HM, welding means, or the like.
- both sides of the gap of the non-joined portion 77 can be closed in the same manner, for example, by folding the sheet material or by using the hot melt adhesive HM.
- a non-joined portion 77 closed on both sides in the width direction WD is formed as in the illustrated example, and the non-joined portion 77 is formed between the side elastic member 73 located at the side most and the side edge of the intermediate region L.
- the hollow portion 70H surrounded by the sheet layer is formed on the side edge of the side flap.
- the folds formed on the side portions of the side flaps are formed by at least one of the frontmost sheet layer 74 and the rearmost sheet layer 75 swelling greatly, and are largely soft (that is, rich in cushioning properties). Becomes Therefore, the large and soft folds are formed inside, outside, inside and outside both sides, or in the entire thickness direction of the range including the side edge of the side flap 70, so that the end portion of the leg opening LO feels good.
- the side elastic member 73 may be located in the vicinity of the side edge of the side flap 70, but the portion of the side flap 70 from the side edge to the center side in the width direction WD by 2 to 15 mm (particularly 5 to 10 mm). Preferably, the side elastic member 73 is not included. Further, it is preferable that the portion from the side edge to the center side in the width direction WD of 2 to 15 mm (particularly 5 to 10 mm) includes a part or the whole of the hollow portion 70H. As described above, when the side elastic member 73 is sufficiently separated from the side edge of the side flap 70, a portion that is pressed against the skin when the product is held by hand at the time of attachment or purchase (that is, the side elastic member 73).
- the positional relationship between the hollow portion 70H and the side elastic member 73 can be determined as appropriate. However, when at least one side elastic member 73 is provided in the portion located on the front side of the hollow portion 70H as shown in the illustrated example, the side This is preferable because the contraction force of the elastic member 73 is directly applied to the hollow portion 70H, and the fold shape in the hollow portion 70H is highly maintained.
- the inner sheet layer 76 that overlaps the back of the sheet layer 74 on the front side or the sheet layer 75 on the back side may be fixed to the sheet layer adjacent on the opposite side as shown in FIG. Good (the first sheet layer 71 and the second sheet layer 72 in the illustrated example are adhered to each other with a hot melt adhesive HM), but as shown in FIG. 11, the inner sheet layer 76 is adjacent to both sides in the thickness direction. It is particularly preferred that it is non-fixed to the layer. That is, it is preferable that a plurality of hollow portions 70H defined by the inner sheet layer 76 be provided so as to overlap in the thickness direction. As a result, the folds are formed independently also in the portions located between the plurality of hollow portions 70H, and the folds overlap, so that the folds having better cushioning properties are formed on the side portions of the side flaps 70. Become.
- the side flap 70 has a folded sheet layer extending from a portion located on a front side of the hollow portion 70H to a portion located on a side edge of the side flap 70 to reach a portion located on the back side of the hollow portion 70H. It is preferable that the hollow portion 70H extends laterally to the folded position of the folded sheet layer because the cushioning property of the fold formed in the hollow portion 70H is particularly improved by the restoring force against the folded.
- the folded sheet layer means a pair of layers formed by folding a sheet material.
- the side flap 70 has a double-folded sheet layer folded at its side edge, and the outermost sheet layer 74 and the lowermost sheet layer 75 of the non-joined portion 77 are respectively provided outside.
- the front side portion and the back side portion are bordered by the folding position of the located folded sheet layer.
- the side elastic member 73 is located between the front side portion with the folding position of the outside folded sheet layer as a boundary and the front side portion with the folding position of the inside folded sheet layer as a boundary. are also fixed at positions away from the center in the width direction WD.
- the side flap 70 has a double folded sheet layer folded at its side edge, and the first sheet layer 71 and the second sheet layer 72 sandwiching the side elastic member 73 are respectively folded inside. It includes a portion on one side and a portion on the other side with respect to the folding position of the sheet layer (that is, the first sheet layer 71 and the second sheet layer 72 are both internal sheet layers 76).
- the non-joined portion 77 is a portion where the frontmost sheet layer 74 and the first sheet layer 71 overlapping therewith are not joined, and the most rearmost sheet layer 75 and the second sheet layer 72 overlapping therewith are joined.
- the hollow portion 70H extends laterally to the folded position of the folded sheet layer located outside.
- the hollow portions 70H are formed on both the front and back sides of the side portion of the side flap 70, and large folds are formed on both the front and back sides, so that the feel of the side portion of the side flap 70 portion is good.
- the side elastic members 73 are doubly covered with the folded sheet layer, the feel of the side elastic members 73 is not easily transmitted to the skin, and the touch is particularly good.
- the sheet layer 74 on the front side and the sheet layer 75 on the back side are a part on one side and a part on the other side with respect to the folding position of the folded sheet layer located outside, the sheet is hollow due to the restoring force against folding.
- the cushioning property of the fold formed in the portion having the portion 70H is also excellent.
- the position of the side elastic member 73 in the structure shown in FIGS. 3, 4, and 11 is determined by changing the position of the back side between the folding position of the outside folded sheet layer and the inside of the folded sheet layer. It may be located between the folding position and the back side. That is, the side elastic member 73 may be attached to a portion located on the back side of the hollow portion 70H.
- the non-joined portion 77 has a four-layer structure of a sheet layer as in these examples, it is preferable to construct the side flap 70 using the sheet of the rising gather 60 as in the example shown in FIG.
- the folded sheet layer of the side flap 70 has a two-layer structure of the rising gather 60 sheet, the first portion P1 extending from the base portion 65 of the rising gather 60 to the side edge of the side flap 70, and the rising gather 60 sheet.
- the two-layer structure can be formed by the second portion P2 that is folded back at the side edge of the side flap 70 and extends toward the center in the width direction WD.
- the exterior bodies 12F and 12B include a rectangular front exterior body 12F that constitutes at least a waist part of the front body F, and a rectangular rear exterior body 12B that constitutes at least a waist part of the back body B.
- the front exterior body 12F and the rear exterior body 12B are not continuous on the crotch side, but are separated in the front-back direction LD (exterior two-split type).
- the distance in the front-rear direction can be, for example, about 40 to 60% of the total length Y.
- the lower edges of the front exterior body 12F and the rear exterior body 12B are linear along the width direction WD, but at least one lower edge of the front exterior body 12F and the rear exterior body 12B extends around the leg. Such a curved shape may be used.
- the exterior bodies 12F and 12B may be formed integrally from the front body F to the back body B and pass through the crotch (integrated exterior type).
- the exterior bodies 12F and 12B have a waist portion which is a range in the front-back direction corresponding to the waist region T. Further, in this example, the front and rear exterior bodies 12F and the rear exterior body 12B have the same longitudinal dimension. As shown in FIG. 8, the front-rear body 12 ⁇ / b> B has a front-rear body 12 ⁇ / b> B having a front-rear dimension longer than the front-rear body 12 ⁇ / b> F. And the front exterior body 12F does not have a portion corresponding to the intermediate region L. In this case or on the contrary, although not shown, the front exterior body 12F may also be provided with a groin cover extending from the waistline region T to the intermediate region L side.
- the exterior bodies 12F and 12B include an inner sheet layer 12H, an outer sheet layer 12S, and elastic members 16 to 19 provided therebetween.
- Each sheet layer can be a single sheet material or individual sheet materials. That is, in the former case, the inside of one sheet material folded at an appropriate position such as the edge of the waist opening WO or the edge on the side of the leg opening LO in part or all of the front exterior body 12F and the rear exterior body 12B.
- Elastic members 16 to 19 can be provided between the portion and the outer portion.
- each of the waist portions W has a portion including a turn of the sheet material.
- the sheet material forming the outer sheet layer 12S extends only to the edge of the waist opening WO, but the sheet material forming the inner sheet layer 12H is a sheet forming the second sheet layer. It wraps around the waist edge of the timber and is folded inside.
- the folded portion serves as an interior cover layer 12r extending over the entire width of the exterior body up to a position overlapping the end of the interior body 200 on the waist opening WO side.
- the interior cover layer 12r may be formed by attaching a dedicated sheet material without forming the inner sheet layer 12H by folding back the sheet material.
- Elastic members 16 to 19 are incorporated in the exterior bodies 12F and 12B to enhance the fit around the wearer's torso, and an elastic region A2 that elastically expands and contracts in the width direction WD with expansion and contraction of the elastic members is formed. ing. In the stretchable region A2, the exterior bodies 12F and 12B contract with the contraction of the elastic member in a natural length state, forming wrinkles or folds, and when extending in the longitudinal direction of the elastic member, extend completely without wrinkles. Elongation is possible up to a predetermined elongation rate.
- the elastic members 16 to 19 in addition to an elongated elastic member such as thread rubber (illustrated example), a known elastic member such as a band, a net, or a film can be used without any particular limitation.
- a known elastic member such as a band, a net, or a film can be used without any particular limitation.
- synthetic rubber such as spandex or natural rubber may be used.
- a plurality of waist elastic members 17 are arranged at the waist portions W of the exterior bodies 12F and 12B in the front-rear direction so as to be continuous over the entire width direction WD. It is mounted empty.
- one or more of the waist elastic members 17 arranged in the region adjacent to the lower waist portion U may overlap with the inner body 200, or may be located at the center in the width direction overlapping with the inner body 200. May be provided on both sides in the width direction.
- the waist elastic member 17 has a thickness of 155 to 1880 dtex, particularly about 470 to 1240 dtex (in the case of synthetic rubber; in the case of natural rubber, the cross-sectional area is 0.05 to 1.5 mm 2 , particularly 0.1 to 1.0 mm). It is preferable to provide about 2 to 15, especially about 4 to 10 thread rubbers at intervals of 2 to 12 mm, especially at intervals of 3 to 7 mm, thereby extending the waist portion W in the width direction WD. The ratio is preferably about 150 to 400%, particularly about 220 to 320%. Further, the waist portion W does not need to use the waist elastic member 17 having the same thickness in all the longitudinal directions LD or to have the same elongation rate. The sheath elongation rate may be different.
- a plurality of lower waist elastic members 15 and 19 made of an elongated elastic member are attached to the lower waist portion U of the exterior bodies 12F and 12B at intervals in the front-rear direction.
- the waist lower elastic members 15 and 19 have a thickness of 155 to 1880 dtex, particularly about 470 to 1240 dtex (in the case of synthetic rubber; in the case of natural rubber, the cross-sectional area is 0.05 to 1.5 mm 2 , especially 0.1 to 1).
- the rubber thread .0mm about 2), 1 ⁇ 15mm, especially 3 to is preferably provided about 5 to 30 yarns at intervals of 8 mm, which by 200 to 350% elongation modulus in the width direction WD of the waist lower portion U, In particular, it is preferably about 240 to 300%.
- the same elastic member as the lower part of the waist is used.
- the elastic members 16 and 19 are provided in the front-rear direction range having the absorber 56 as in the lower waist portion U in the illustrated example, in order to prevent the absorber 56 from shrinking in the width direction WD in a part or the whole thereof.
- the middle in the width direction preferably including the entirety of the inner and outer joints 201 and 202
- the portion or all of the portion overlapping the absorber 56 in the width direction WD is defined as a non-stretchable region A1, and both sides in the width direction are stretchable. It is preferable that the area be A2.
- the waist portion W is preferably formed as a stretchable region A2 extending in the entire width direction WD, but a non-stretchable region A1 may be provided in the middle in the width direction similarly to the lower waist portion U.
- a portion located in the front-back direction LD range having the side seal portion 12A is the waist lower elastic region A3.
- the elastic regions A2 and the non-elastic regions A1 supply the elastic members 15 to 17, 19 between the inner sheet layer 12H and the outer sheet layer 12S, and position the elastic members 16, 19 in the elastic region A2.
- the elastic members 16 and 19 are cut at a middle position in the width direction by pressurizing and heating, or the elastic members 16 and 19 are substantially cut. It can be constructed by cutting the whole finely by pressurizing and heating and killing the stretch in the non-stretchable region A1 while leaving the stretch in the stretchable region A2.
- the sheet material forming the inner sheet layer 12H and the outer sheet layer 12S can be used without any particular limitation, but a nonwoven fabric is preferable. When a nonwoven fabric is used, the basis weight per sheet is preferably about 10 to 30 g / m 2 .
- the elastic members 16 to 19 are fixed to the exterior bodies 12F and 12B by the hot melt adhesive HM by various coating methods. It is preferable that the inner sheet layer 12H and the outer sheet layer 12S are joined to each other by the hot melt adhesive HM for fixing the elastic members 16 to 19 at the portions having the elastic members 16 to 19, respectively.
- the portion not provided may be joined by a hot melt adhesive HM, may be joined by material welding such as heat sealing or ultrasonic sealing, or may not be partially or entirely adhered.
- the hot melt adhesive HM is applied only to the outer peripheral surfaces of the elastic members 16 to 19 by applying means such as a comb gun or a shrink wrap nozzle.
- the fixing of the elastic members 16 to 19 to both sheet layers and the fixing between the two sheet layers are performed only by the hot melt adhesive HM applied to the outer peripheral surfaces of the elastic members 16 to 19.
- the elastic members 16 to 19 may be fixed to both sheet layers only at both ends in the expansion and contraction direction in the expansion and contraction region A2.
- the side edge of the leg opening LO becomes the side flap 70 of the above-described interior body 200, and the leg opening LO
- the upper edge is a lower edge of a wing region J extending on both sides of the interior body 200 in the front exterior body 12F and the rear exterior body 12B.
- the lower end portion 80 of the wing region J has a lower end elastic region UG in which one (or a plurality of) elongated lower end elastic members 83 are provided along the width direction and spaced from each other. ing.
- the lower end portion 80 of the wing region J has a hollow portion 80H extending in the width direction along the lower edge thereof, and the lower end elastic member 83 contracts to form a hollow portion at the lower end portion 80 of the wing region J. It is preferable that a portion including 80H contracts in the width direction to form a lower end gather.
- a portion including the hollow portion 80H along the lower edge of the wing region J is contracted in the width direction WD due to the contraction of the lower end elastic member 83, so that a lower end gather is formed. That is, the folds of the lower end gathers are formed side by side in the width direction WD at a portion including the hollow portion 80H at the lower end of the wing region J.
- the folds of the lower end gathers are formed by the hollow portion 80H greatly expanding, and are largely soft (that is, rich in cushioning properties). It will be.
- the touch at the lower end portion 80 of the wing region J of the exterior bodies 12F and 12B is good (fluffy and fluffy), and the touch at the side of the side flap 70 is good.
- the feel of the entire edge of the leg opening LO is improved.
- the structure of the hollow portion 80H is not particularly limited, but can be formed, for example, by the following laminated structure of sheet layers. That is, in the example shown in FIG. 15, the above-mentioned second sheet material 12H is folded outward at the edge of the leg opening LO, and the portion outside the folding position faces the front side of the lower end elastic member 83. A portion inside the folding position is a second sheet layer 82 facing the back side of the lower end elastic member 83. Instead, the first sheet material 12S is folded at the edge of the leg opening LO to form the first sheet layer 81 and the second sheet layer 82, or one of the first sheet material 12S and the second sheet material 12H.
- the first sheet layer 81 is formed, and the second sheet layer 82 is formed on the other side.
- the sheet material forming the first sheet layer 81 and the second sheet layer 82 is replaced with the exterior body 12F. , 12B, and a suitable non-woven fabric such as the non-woven fabric that can be used in the rising gathers 60 and the exterior bodies 12F, 12B can be selected as the sheet material.
- the lower end elastic member 83 is the above-described lower waist elastic member 19 in the front exterior body 12F and the above-described cover elastic member 16 in the rear exterior body 12B, but is not limited thereto. However, it is also possible to provide a dedicated elastic member which differs from these materials in terms of material, elongation ratio, arrangement, and the like.
- the extension ratio of the lower end elastic member 83 in the attached state is preferably 200 to 350%, more preferably 240 to 300%.
- the arrangement interval of the lower end elastic member 83 is suitably 5 to 10 mm.
- the lower end elastic member 83 in the illustrated example is fixed to the first sheet layer 81 and the second sheet layer 82.
- a material such as a hot melt adhesive HM, a heat seal, an ultrasonic seal, or the like by various application methods. Fixing means by welding can be used. If the bonding area of the first sheet layer 81 and the second sheet layer 82 is large, the flexibility is impaired. Therefore, it is preferable that the portions other than the bonding portion of the lower end elastic member 83 are not bonded or are weakly bonded.
- the hot melt adhesive HM is applied only to the outer peripheral surface of the lower end elastic member 83 by applying means such as a comb gun or a shrink wrap nozzle and is sandwiched between the first sheet layer 81 and the second sheet layer 82.
- the fixing of the lower end elastic member 83 to the first sheet layer 81 and the second sheet layer 82 only with the hot melt adhesive HM applied to the outer peripheral surface of the lower end elastic member 83, and the first sheet layer 81 and the The structure is such that bonding between the two sheet layers 82 is performed.
- the hot melt adhesive HM can be appropriately added to a portion not having the elastic member 83.
- the attachment range of the lower end elastic member 83 in the width direction that is, the range of the lower end elastic region UG in the width direction WD can be appropriately determined.
- the lower end elastic member 83 may be provided only on both sides of the non-stretchable region A1 in the width direction WD. In the middle part of the above, the elasticity may be killed by cutting.
- the lower end 80 of the wing region J in the illustrated example has three or more sheet layers including the first sheet layer 81 and the second sheet layer 82. That is, in addition to the frontmost sheet layer 84 and the rearmost sheet layer 85, at least one internal sheet layer 86 located therebetween is provided. Some or all of these sheet layers may be formed of separate sheet materials, respectively, or one sheet material may be formed by turning once or a plurality of times.
- the inner sheet layer 86 may be formed by directly or appropriately folding the first sheet material 12S and the second sheet material 12H, or by adding a dedicated sheet material to the lower ends 80 of the exterior bodies 12F and 12B. It may be formed.
- an appropriate nonwoven fabric such as the nonwoven fabric usable in the rising gathers 60 and the exterior bodies 12F and 12B can be selected.
- the lower end portion 80 of the wing region J has a non-joined portion 87 in which at least one of the sheet layer 84 on the front side and the sheet layer 85 on the back side is not joined to the internal sheet layer 86 overlapping the back thereof. That is, as long as one of the sheet layer 84 on the front side and the sheet layer 85 on the rearmost side and the inner sheet layer 86 overlapping therewith are not joined, the non-joined portion 87 is joined between the other part or all of the other layers. Or all the sheet layers in the thickness direction may be non-joined.
- the non-joined portion 87 is a portion that continuously or intermittently continues in the width direction WD in the front-rear direction LD range including a region between the lowermost elastic member 83 located at the lowest position and the lower edge of the wing region J. is there.
- the dimension of the non-bonded portion 87 in the front-rear direction LD can be appropriately determined, but is preferably 2 to 15 mm, and particularly preferably 5 to 10 mm. Further, the dimension of the non-joined portion 87 in the width direction WD is preferably 50% or more, particularly preferably 90% or more of the dimension of the wing region J in the width direction WD.
- the laminated structure (including the non-joined portion) of the wing area J is as follows. It may be provided over the entire width of the product, or may be provided only in the elastic region A2.
- a gap between at least one of the frontmost sheet layer 84 and the rearmost sheet layer 85 and the inner sheet layer 86 overlapping the non-joined portion 87 is formed on both sides of the non-joined portion 87 in the front-rear direction LD.
- a hollow portion 80H is formed.
- one side of the gap of the non-joined portion 87 is closed by folding the sheet material forming the frontmost sheet layer 84 or the rearmost sheet layer 85 at the lower edge of the wing area J, and the other side is closed.
- the sheet can be closed by appropriately bonding the sheet layer using a hot melt adhesive HM or a welding means.
- both sides of the gap of the non-joined portion 87 can be closed in the same manner, for example, by folding back the sheet material or using the hot melt adhesive HM.
- the rearmost sheet layer 85 has a portion that is not joined to the inner sheet layer 86 that overlaps the lowermost sheet layer 85. Since it is not closed on the lower side, the gap is not the non-joined portion 87 closed on both sides in the front-rear direction LD, and a fold excellent in cushioning property described later is not formed.
- the portion where the outermost sheet layer 84 and the inner sheet layer 86 overlapping therewith is not bonded is the lower edge of the exterior bodies 12F and 12B. From the lowermost elastic member 83 at the lowermost position.
- the non-joined portion 87 has a portion where the outermost sheet layer 84 and the inner sheet layer 86 overlapping therewith are not joined from the lower edges of the exterior bodies 12F and 12B. This is a portion that continues to the upper edge of the inner sheet layer 86.
- the portion where the rearmost sheet layer 85 and the inner sheet layer 86 overlapping the lowermost sheet layer 85 are not joined is the lowermost lower end elasticity from the lower edges of the exterior bodies 12F and 12B.
- the part where the outermost sheet layer 84 and the inner sheet layer 86 overlapping therewith is not joined is a part that continues from the lower edges of the outer package bodies 12F and 12B to the upper edge of the inner sheet layer 86. is there.
- the non-joined portion 87 is a portion where at least one of the frontmost sheet layer 84 and the backmost sheet layer 85 and the inner sheet layer 86 overlapping therewith are not joined, and the gap between the sheet layers is the non-joined portion 87. Are closed on both sides in the front-rear direction LD.
- the non-joined portion 87 has a front-rear direction LD range including the region between the lowermost elastic member 83 located at the lowest position and the lower edge of the wing region J (the front-rear direction LD equal to or larger than the region). Range) and continues in the width direction WD. That is, a hollow portion surrounded by the sheet layer continues in the non-joined portion 87 in the width direction.
- the fold formed in the non-joined portion 87 is formed by at least one of the sheet layer 84 on the frontmost side and the sheet layer 85 on the rearmost side largely swelling, and is largely soft (that is, rich in cushioning properties). Become. Therefore, since this large soft fold is formed inside, outside, inside and outside both sides, or in the entire thickness direction of the range including the lower edge of the wing region J, the end of the leg opening LO in the exterior bodies 12F and 12B is formed. The feel is good.
- the lower end elastic member 83 may be located in the vicinity of the lower edge of the wing region J. However, the portion from the lower edge of the wing region J to the center side of the front-back direction LD by 2 to 15 mm (particularly 5 to 10 mm). , It is preferable not to include the lower end elastic member 83 and to include part or all of the hollow portion 80H. As described above, when the lower end elastic member 83 is sufficiently separated from the lower edge of the wing region J and includes a part or all of the hollow portion 80H in the separated portion, the product is held by hand at the time of mounting or purchase.
- the end of the leg opening LO is formed. It is particularly preferable for improving the feel of the skin.
- At least one lower end elastic member 83 is provided at a position overlapping the hollow portion 80H in the thickness direction. This is preferable because the contraction force of the lower end elastic member 83 is directly applied to the non-joined portion 87, and the fold shape in the non-joined portion 87 is highly maintained.
- the inner sheet layer 86 may be fixed to a sheet layer adjacent to one side in the thickness direction, but as shown in FIGS. It is also preferable that the sheet is not fixed to the sheet layers adjacent on both sides in the thickness direction.
- the inner sheet layer 86 is independently formed with folds by the contraction force of the lower end elastic member 83.
- the folds having more excellent cushioning properties are formed. J is formed at the lower end 80.
- the second sheet material 12H is folded back to the portion forming the outermost sheet layer 84 and the lower edge of the wing region J to the side having the lower end elastic member 83.
- a portion forming the inner sheet layer 86 and it is preferable that at least a part of the portion forming the inner sheet layer 86 is joined to the first sheet material 12S.
- the first sheet material 12S includes a portion forming the rearmost sheet layer 85 and a portion forming the inner sheet layer 86 that is folded back to the side having the lower end elastic member 83 at the lower edge of the wing region J.
- at least a part of the portion forming the internal sheet layer 86 may be joined to the second sheet material 12H (not shown).
- the bonding between the inner sheet layer formed by folding one of the first sheet material 12S and the second sheet material 12H and the other sheet material is performed by lower end elasticity as shown in FIG.
- the hot-melt adhesive HM for fixing the member 83 may be used, or the hot-melt adhesive HM may be separately applied as shown in FIGS. Also, even if the joining position is separated from the lower edge of the wing region J by a certain amount (for example, about 5 to 10 mm) above the lower edge of the wing region J as in the examples shown in FIGS. It may be near the lower edge of the wing region J.
- the inner sheet layer 86 can be formed by the sheet material forming one of the first sheet layer 81 and the second sheet layer 82 sandwiching the lower end elastic member 83, and the sheet layer 84 on the most front side Alternatively, since the portion forming the rearmost sheet layer 85 has a restoring force against folding back of the portion forming the inner sheet layer 86, the fold having more cushioning properties is formed by the lower portion 80 of the wing region J with less sheet material. Is formed.
- the first sheet material 12S and the second sheet material 12H have a folded portion that is folded inward at the lower edge of the wing region J.
- the rearmost sheet layer 85 is formed on one side and the other side of the folding position of the first sheet material 12S, and the frontmost sheet layer 84 is formed by folding the second sheet material 12H. It is a part on one side and a part on the other side across the position.
- the inner sheet layer 86 has a portion on one side and a portion on the other side across the folding position of the second sheet material 12H.
- first sheet material 12S and the second sheet material 12H sandwiching the lower end elastic member 83 by folding back the first sheet material 12S and the second sheet material 12H sandwiching the lower end elastic member 83, two sheet layers other than the first sheet layer 81 and the second sheet layer 82 can be formed. Moreover, since each has a restoring force against folding back, folds having better cushioning properties are formed at the lower end portion 80 of the wing region J with less sheet material.
- the folding direction of the first sheet material 12S and the second sheet material 12H can be outward, and in this case, basically the same advantage is provided except that the orientation is different.
- the fixing of the inner body 200 to the outer bodies 12F and 12B can be performed by a joining means by material welding such as heat sealing or ultrasonic sealing, or by a hot melt adhesive.
- the inner surface of the exterior bodies 12F and 12B is applied to the back surface of the interior body 200, that is, the hot melt adhesive applied to the back surface of the liquid-impermeable sheet 11 and the base portion 65 of the rising gather 60 in this case. Is fixed.
- the inner and outer joints 201 and 202 for fixing the inner body 200 and the outer bodies 12F and 12B can be provided over substantially the entire area where the inner and outer joints overlap each other. It can also be provided in a part other than the part.
- the inner body 200 is exposed between the front outer body 12F and the rear outer body 12B, so that the liquid impermeable sheet 11 is not exposed on the back surface of the inner body 200. It is preferable that the back surface of the inner body 200 is provided with a cover nonwoven fabric 13 extending from between the front outer body 12F and the inner body 200 to between the rear outer body 12B and the inner body 200.
- the inner surface and the outer surface of the cover nonwoven fabric 13 can be respectively bonded to the opposing surfaces via a hot melt adhesive.
- the non-woven fabric used for the cover non-woven fabric 13 for example, the same non-woven fabric as the material of the exterior bodies 12F and 12B can be appropriately selected.
- Non-woven fabric As the nonwoven fabric in the above description, a known nonwoven fabric can be appropriately used depending on the site and purpose.
- the constituent fibers of the nonwoven fabric include olefin-based synthetic fibers such as polyethylene and polypropylene, polyester-based and polyamide-based synthetic fibers (including composite fibers such as core-sheaths as well as monocomponent fibers), as well as regeneration of rayon and cupra. Fibers, natural fibers such as cotton, and the like can be selected without particular limitation, and these can be used in combination. In order to increase the flexibility of the nonwoven fabric, it is preferable that the constituent fibers are crimped fibers.
- non-woven fabrics generally have short fiber non-woven fabrics, long fiber non-woven fabrics, spun bond non-woven fabrics, melt blown non-woven fabrics, spun lace non-woven fabrics, thermal bond (air through) non-woven fabrics, and needle punches depending on the fiber length, sheet forming method, fiber bonding method, and laminated structure.
- Nonwoven fabrics, point-bonded nonwoven fabrics, laminated nonwoven fabrics (SMS nonwoven fabrics having a melt blown layer between spunbond layers, SMMS nonwoven fabrics, and the like) and the like can be used, and any of these nonwoven fabrics can be used.
- the front-back direction means the direction (longitudinal direction) indicated by the symbol LD in the figure
- the "width direction” means the direction (left-right direction) shown by WD in the figure.
- ⁇ means the side of the member that is closer to the wearer's skin when wearing the pants-type disposable diaper, and "Back” means from the wearer's skin when wearing the pants-type disposable diaper Means the far side.
- Elongation ratio means a value when the natural length is 100%. For example, an elongation ratio of 200% is synonymous with an elongation ratio of twice.
- “Gel strength” is measured as follows. Artificial urine (urea: 2 wt%, sodium chloride: 0.8 wt%, calcium chloride dihydrate: 0.03 wt%, magnesium sulfate heptahydrate: 0.08 wt%, and ion-exchanged water: 97.09 wt%) 1.0 g of superabsorbent polymer was added to 49.0 g of the mixture, and the mixture was stirred with a stirrer. The resulting gel is left in a thermo-hygrostat at 40 ° C. ⁇ 60% RH for 3 hours, then returned to room temperature, and the gel strength is measured with a card meter (Curdmeter-MAX @ ME-500, manufactured by I. techno Engineering Co.).
- “Eye weight” is measured as follows. After pre-drying the sample or test piece, the sample or test piece is left in a test room or apparatus in a standard state (the test place is at a temperature of 23 ⁇ 1 ° C. and a relative humidity of 50 ⁇ 2%) to make it a constant weight state. Predrying refers to making a sample or a test piece a constant weight in an environment at a temperature of 100 ° C. Preliminary drying may not be performed for fibers having an official moisture content of 0.0%. A sample having a size of 100 mm x 100 mm is cut out from the test piece in a constant weight state using a template for sampling (100 mm x 100 mm). The weight of the sample is measured, multiplied by 100 to calculate the weight per square meter, and used as the basis weight.
- -"Thickness is automatically measured using an automatic thickness measuring device (KES-G5 handy compression measurement program) under the conditions of a load: 0.098 N / cm 2 and a pressurized area: 2 cm 2 .
- KS-G5 handy compression measurement program automatic thickness measuring device
- the water absorption rate is defined as "time to end point” when JIS K7224-1996 "Test method for water absorption rate of superabsorbent resin" is performed using 2 g of superabsorbent polymer and 50 g of physiological saline. .
- “Deployed state” means a state in which it is flattened without shrinkage or loosening.
- dimensions of each part mean dimensions in the unfolded state, not the natural length state.
- test or measurement shall be performed in a test room or apparatus in a standard condition (the test location is 23 ⁇ 1 ° C and 50 ⁇ 2% relative humidity). I do.
- the present invention can be used for all disposable wearable articles such as the disposable diapers for tapes, pad-type disposable diapers, sanitary napkins, etc., in addition to the disposable diapers for pants as described above.
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Abstract
Description
<第1の態様>
股間部の両側部に、吸収体を有しないサイドフラップを有し、
前記サイドフラップは、一本又は複数本の細長状のサイド弾性部材が前後方向に沿ってかつ互いに間隔を空けて設けられたサイド伸縮領域を有している、
使い捨て着用物品において、
前記サイドフラップは、その側縁に沿って前後方向に続く中空部を有しており、
前記サイド弾性部材の収縮により、前記サイドフラップにおける前記中空部を含む部分が前後方向に収縮してサイドギャザーが形成されている、
ことを特徴とする使い捨て着用物品。
本使い捨て着用物品では、サイド弾性部材の収縮により、サイドフラップに沿う中空部を含む部分が前後方向に収縮してサイドギャザーの各襞が前後方向に並んで形成される。ここで、サイドフラップにおける中空部を含む部分にサイドギャザーが形成されると、サイドギャザーの襞は中空部が大きく膨らむことにより形成され、大きく柔らか(つまりクッション性に富む)なものとなる。したがって、この大きく柔らかな襞により、股間部の側部の肌触りが良好となる(ふっくら、ふわふわしたものとなる)。
前記サイドフラップは、前記サイド弾性部材の表側に面する第1シート層と、サイド弾性部材の裏側に面する第2シート層を含めて三層以上のシート層を有するとともに、最も表側のシート層及び最も裏側のシート層の少なくとも一方とそれに重なる内部シート層とが接合されていない非接合部を有しており、
前記非接合部は、最も側方に位置するサイド弾性部材と前記サイドフラップの側縁との間の領域を含む幅方向範囲で前後方向に続いており、
前記最も表側のシート層及び最も裏側のシート層の少なくとも一方とそれに重なる内部シート層との隙間が、前記非接合部の幅方向両側で閉じられていることにより、前記中空部が形成されている、
第1の態様の使い捨て着用物品。
本使い捨て着用物品では、サイドフラップが三層以上の層構造を有し、最も表側のシート層及び最も裏側のシート層の少なくとも一方とそれに重なる内部シート層とが接合されていない非接合部が形成されることにより、シート層により囲まれた中空部分が形成される。また、非接合部は、最も側方に位置するサイド弾性部材とサイドフラップの側縁との間の領域を含む幅方向範囲(当該領域と同じか又はそれ以上の幅方向範囲)で前後方向に続いている。その結果、最も側方に位置するサイド弾性部材を含む部位に、大きく柔らかな襞が形成される。
前記中空部は、前記サイドフラップの側縁から幅方向の中央側に2mm以上離間した位置まで延びている、
第1又は2の態様の使い捨て着用物品。
中空部の位置及び幅は適宜定めればよいが、通常の場合、本態様の範囲内であることが好ましい。
前記サイドフラップにおける、側縁から幅方向の中央側に2~15mmまでの部分は、前記サイド弾性部材を含まず、かつ前記中空部の一部又は全部を含む、
第1~3のいずれか1つの態様の使い捨て着用物品。
このように、サイド弾性部材がサイドフラップの側縁から十分に離間しており、その離間部分に中空部の一部又は全部を含むと、装着や購入に際して商品を手で持ったとき又は装着中において肌に押し付けられる部分(つまりサイド弾性部材を有する部分)の側方の厚み方向の全体に、柔軟性やクッションに富む大きな襞が形成されるため、脚開口の端部の肌触りを改善する上で特に好ましい。
前記中空部の表側に、少なくとも一本の前記サイド弾性部材を有する、
第1~4のいずれか1つの態様の使い捨て着用物品。
中空部とサイド弾性部材との位置関係は適宜定めることができるが、中空部の表側に、少なくとも一本の前記サイド弾性部材を有すると、サイド弾性部材の収縮力が直接的に中空部に加わり、中空部における襞の形状維持性が高いものとなるため好ましい。
前記中空部は、厚み方向に重なるように複数設けられている、
第1~5のいずれか1つの態様の使い捨て着用物品。
この構造では、複数の中空部の間に位置する部分にも独立的に襞が形成され、それが重なるため、より優れたクッション性を有する襞がサイドフラップの側部に形成されるようになる。
前記サイドフラップは、前記中空部の表側から前記サイドフラップの側縁で折り返されて前記中空部の裏側に至る折り返しシート層を有しており、
前記中空部は前記折り返しシート層の折り返し位置まで側方に延びている、
第1~6のいずれか1つの態様の使い捨て着用物品。
このように、折り返しシート層により中空部が形成されていると、折り返しに対する復元力により、中空部に形成される襞のクッション性が特に向上するため好ましい。
前記サイドフラップは、前記サイドフラップの側縁で折り返された折り返しシート層を二重に有しており、
前記サイドフラップにおける最も表側のシート層及び最も裏側のシート層は、それぞれ外部に位置する折り返しシート層の折り位置を境として表側の部分及び裏側の部分であり、
前記サイド弾性部材は、外部に位置する折り返しシート層の折り位置を境として表側の部分と、内部に位置する折り返しシート層の折り位置を境として表側の部分との間における、折り位置よりも幅方向の中央側に離れた位置に固定されており、
最も側方に位置するサイド弾性部材と前記サイドフラップの側縁との間では、厚み方向に隣接するシート層のすべてが接合されていないことにより、各シート層の間に中空部がそれぞれ形成されている、
第1~6のいずれか1つの態様の使い捨て着用物品。
この構造では、サイドフラップに二重の折り返しシート層を配置することにより、サイドフラップの少なくとも側部に、中空部を三段(厚み方向に三室)形成することができるものである。この場合、二重の折り返しシート層のそれぞれが折り返しに対する復元力を有するため、より少ないシート材で、より優れたクッション性を有する襞がサイドフラップの側部に形成されるようになる。
前記サイドフラップは、前記サイドフラップの側縁で折り返された折り返しシート層を二重に有しており、
前記サイドフラップにおける最も表側のシート層及び最も裏側のシート層は、それぞれ外部に位置する折り返しシート層の折り位置を境として表側の部分及び裏側の部分であり、
前記サイド弾性部材は、内部に位置する折り返しシート層の折り位置を境として表側の部分及び裏側の部分の間における、折り位置よりも幅方向の中央側に離れた位置に固定されており、
最も側方に位置するサイド弾性部材と前記サイドフラップの側縁との間では、前記最も表側のシート層と、前記内部に位置する折り返しシート層の折り位置を境として表側の部分とが接合されていないことにより、それらシート層の間に中空部が形成されているとともに、前記最も裏側のシート層と、前記内部に位置する折り返しシート層の折り位置を境として裏側の部分とが接合されていないことにより、それらシート層の間に中空部が形成されている、
第1~6のいずれか1つの態様の使い捨て着用物品。
本態様では、サイドフラップの側縁を含む範囲の少なくとも表裏両側に形成されるため、股間部の側部の表裏両面で肌触りが良好となる。また、二重の折り返しシート層のそれぞれが折り返しに対する復元力を有するため、より少ないシート材で、より優れたクッション性を有する襞がサイドフラップの側部に形成されるようになる。
前記サイド弾性部材よりも幅方向の中央側の位置を起点として起き上がる起き上がりギャザーが前後方向に沿って延びており、
前記起き上がりギャザーは、先端部で二つ折りされて二層構造となっているギャザーシートと、少なくとも先端部における前記二層構造の層間に前後方向に沿って設けられた細長状のギャザー弾性部材とを有しており、
前記サイドフラップの両側部は、前記ギャザーシートからなる二層構造が前記起点から前記サイドフラップの側縁まで延びる第1部分と、前記ギャザーシートからなる二層構造が前記サイドフラップの側縁で折り返されて幅方向の中央側に延びる第2部分とを有しており、
前記二重の折り返しシート層は、前記ギャザーシートの前記第1部分及び第2部分である、
第7又は8の態様の使い捨て着用物品。
使い捨て着用物品では、本態様のような起き上がりギャザーを設けることが一般的である。すなわち、一般的な起き上がりギャザーは、先端部で二つ折りされて二層構造となっているギャザーシートを有している。よって、このギャザーシートの二層構造を延長するとともに側縁で折り返すことにより、前述の中空部を設けることが好ましい。これにより、より少ないシート材で、より優れたクッション性を有する襞がサイドフラップの側部に形成されるようになる。
前記サイド弾性部材は、幅方向に間隔を空けて複数本設けられており、
展開状態の前記サイド伸縮領域における前記サイド弾性部材の伸長率は、側方に位置するものほど低い、
第1~10のいずれか1つの態様の使い捨て着用物品。
このように伸長率を変化させてサイド弾性部材を複数本設けることにより、サイド伸縮領域の肌側への立ち上がりが緩くなり、サイド伸縮領域が適切な装着状態となりやすくなる。サイド伸縮領域の立ち上がりがきついと、サイドフラップが内側に折りかえって脚と使い捨て着用物品の表面との間に挟まれ、漏れにつながるおそれがある。
前身頃及び後身頃の少なくとも胴周り部を構成する外装体と、前身頃から後身頃にわたるように外装体に対して取り付けられた、吸収体を内蔵する内装体と、ウエスト開口と、左右一対の脚開口とを備えた、パンツタイプ使い捨て着用物品であって、
前記内装体の両側部に、前記サイドフラップを有している、
第1~11のいずれか1つの態様の使い捨て着用物品。
パンツタイプ使い捨て着用物品に応用する場合、このように内装体の両側部に、吸収体を有しないサイドフラップを設け、このサイドフラップに中空部を設けることが望ましい。
前身頃の少なくとも胴周り部を構成する前外装体及び後身頃の少なくとも胴周り部を構成する後外装体を別々に備え、これら前外装体及び後外装体が前後方向に離間しており、
前記内装体が、前記前外装体から前記後外装体にかけて前後方向に延在し、かつ前記前外装体及び後外装体にそれぞれ接合され、
前記前外装体の両側部と前記後外装体の両側部とがそれぞれ接合されたサイドシール部と、ウエスト開口及び左右一対の脚開口とを備え、
前記前外装体及び前記後外装体における前記内装体の両側に延びるウイング領域の下縁が、前記脚開口の上部の縁となっており、
前記ウイング領域の下端部は、一本又は複数本の細長状の下端部弾性部材が幅方向に沿ってかつ互いに間隔を空けて設けられた下端部伸縮領域を有しており、
前記ウイング領域の下端部は、その下縁に沿って幅方向に続く中空部を有しており、
前記下端部弾性部材の収縮により、前記ウイング領域の下端部における前記中空部を含む部分が幅方向に収縮して下端部ギャザーが形成されている、
第12の態様の使い捨て着用物品。
本使い捨て着用物品では、下端部弾性部材の収縮により、ウイング領域の下縁に沿う中空部を含む部分が幅方向に収縮して下端部ギャザーが形成される。つまり、ウイング領域の下端部における中空部を含む部分に下端部ギャザーの各襞が幅方向に並んで形成される。ここで、ウイング領域における中空部を含む部分に下端部ギャザーが形成されると、下端部ギャザーの襞は中空部が大きく膨らむことにより形成され、大きく柔らか(つまりクッション性に富む)なものとなる。したがって、外装体のウイング領域の下端部における肌触りが良好となる(ふっくら、ふわふわしたものとなる)ことと、前述のサイドフラップの側部の肌触りが良好になることとが合わさって、脚開口の縁部全体の肌触りが良好となる。
内装体200は任意の形状を採ることができるが、図示例では長方形である。内装体200は、図3~図5に示されるように、身体側となるトップシート30と、液不透過性シート11と、これらの間に介在された吸収要素50とを備えているものであり、吸収機能を担う本体部である。符号40は、トップシート30を透過した液を速やかに吸収要素50へ移行させるために、トップシート30と吸収要素50との間に設けられた中間シートを示しており、符号60は、内装体200の両脇に排泄物が漏れるのを防止するために、内装体200の両側部から装着者の脚周りに接するように延び出た起き上がりギャザー60を示している。
トップシート30は、液を透過する性質を有するものであり、例えば、有孔又は無孔の不織布や、多孔性プラスチックシートなどを例示することができる。また、トップシート30は、1枚のシートからなるものであっても、2枚以上のシートを貼り合せて得た積層シートからなるものであってもよい。同様に、トップシート30は、平面方向に関して、1枚のシートからなるものであっても、2枚以上のシートからなるものであってもよい。
トップシート30を透過した液を速やかに吸収体へ移行させるために、トップシート30より液の透過速度が速い、中間シート(「セカンドシート」とも呼ばれている)40を設けることができる。この中間シート40は、液を速やかに吸収体56へ移行させて吸収体56による吸収性能を高めるとともに、吸収した液の吸収体56からの逆戻り現象を防止するためのものである。中間シート40は省略することもできる。
液不透過性シート11の素材は、特に限定されるものではないが、例えば、ポリエチレンやポリプロピレン等のオレフィン系樹脂等からなるプラスチックフィルムや、不織布の表面にプラスチックフィルムを設けたラミネート不織布、プラスチックフィルムに不織布等を重ねて接合した積層シートなどを例示することができる。液不透過性シート11には、ムレ防止の観点から好まれて使用されている液不透過性かつ透湿性を有する素材を用いることが好ましい。透湿性を有するプラスチックフィルムとしては、ポリエチレンやポリプロピレン等のオレフィン系樹脂中に無機充填剤を混練して、シートを成形した後、一軸又は二軸方向に延伸して得られた微多孔性プラスチックフィルムが広く用いられている。この他にも、マイクロデニール繊維を用いた不織布、熱や圧力をかけることで繊維の空隙を小さくすることによる防漏性強化、高吸水性樹脂又は疎水性樹脂や撥水剤の塗工といった方法により、プラスチックフィルムを用いずに液不透過性としたシートも、液不透過性シート11として用いることができるが、後述するカバー不織布13とのホットメルト接着剤を介した接着時に十分な接着強度を得るため、樹脂フィルムを用いるのが望ましい。
吸収要素50は、吸収体56と、この吸収体56の全体を包む包装シート58とを有する。包装シート58は省略することもできる。
吸収体56は、繊維の集合体により形成することができる。この繊維集合体としては、綿状パルプや合成繊維等の短繊維を積繊したものの他、セルロースアセテート等の合成繊維のトウ(繊維束)を必要に応じて開繊して得られるフィラメント集合体も使用できる。繊維目付けとしては、綿状パルプや短繊維を積繊する場合は、例えば100~300g/m2程度とすることができ、フィラメント集合体の場合は、例えば30~120g/m2程度とすることができる。合成繊維の場合の繊度は、例えば、1~16dtex、好ましくは1~10dtex、さらに好ましくは1~5dtexである。フィラメント集合体の場合、フィラメントは、非捲縮繊維であってもよいが、捲縮繊維であるのが好ましい。捲縮繊維の捲縮度は、例えば、2.54cm当たり5~75個、好ましくは10~50個、さらに好ましくは15~50個程度とすることができる。また、均一に捲縮した捲縮繊維を用いることができる。吸収体56中には高吸収性ポリマー粒子を分散保持させるのが好ましい。
吸収体56には、その一部又は全部に高吸収性ポリマー粒子を含有させることができる。高吸収性ポリマー粒子とは、「粒子」以外に「粉体」も含む。高吸収性ポリマー粒子54としては、この種の使い捨ておむつに使用されるものをそのまま使用でき、例えば500μmの標準ふるい(JIS Z8801-1:2006)を用いたふるい分け(5分間の振とう)でふるい上に残る粒子の割合が30重量%以下のものが望ましく、また、180μmの標準ふるい(JIS Z8801-1:2006)を用いたふるい分け(5分間の振とう)でふるい上に残る粒子の割合が60重量%以上のものが望ましい。
包装シート58を用いる場合、その素材としては、ティッシュペーパ、特にクレープ紙、不織布、ポリラミ不織布、小孔が開いたシート等を用いることができる。ただし、高吸収性ポリマー粒子が抜け出ないシートであるのが望ましい。クレープ紙に換えて不織布を使用する場合、親水性のSMS不織布(SMS、SSMMS等)が特に好適であり、その材質はポリプロピレン、ポリエチレン/ポリプロピレン複合材などを使用できる。目付けは、5~40g/m2、特に10~30g/m2のものが望ましい。
起き上がりギャザー60は、内装体200の側部から起き上がる起き上がり部分68を有しており、この起き上がり部分68が、装着者の鼠径部から脚周りを経て臀部までの範囲に接して横漏れを防止するものである。図示例の起き上がりギャザー60は、付け根側部分60Bが幅方向中央側に向かって斜めに起立し、中間部より先端側部分60Aが幅方向外側に向かって斜めに起立するものであるが、これに限定されるものではなく、全体として幅方向中央側に起立するもの等、適宜の変更が可能である。
内装体200の両側部には、吸収体56の側方に延び出たサイドフラップ70が設けられており、各サイドフラップ70は、その側縁に沿って前後方向LDに続く中空部70Hを有していると好ましい。また、各サイドフラップ70は、一本又は複数本の細長状のサイド弾性部材73が前後方向LDに沿ってかつ互いに間隔を空けて設けられたサイド伸縮領域SGを有している。この結果、サイド弾性部材73の収縮により、サイドフラップ70における中空部70Hを含む部分が前後方向LDに収縮して、多数の襞が前後方向LDに並んだサイドギャザーが形成される。ここで、サイドフラップ70における中空部70Hを含む部分にサイドギャザーが形成されると、図6に示すように、サイドギャザーの襞は中空部70Hが大きく膨らむことにより形成され、大きく柔らか(つまりクッション性に富む)なものとなる。したがって、この大きく柔らかな襞により、股間部の側部の肌触りが良好となる(ふっくら、ふわふわしたものとなる)。
外装体12F,12Bは、前身頃Fの少なくとも胴周り部を構成する部分である長方形の前外装体12Fと、後身頃Bの少なくとも胴周り部を構成する部分である長方形の後外装体12Bとからなり、前外装体12F及び後外装体12Bは股間側で連続しておらず、前後方向LDに離間されたものとなっている(外装二分割タイプ)。この前後方向の離間距離は例えば全長Yの40~60%程度とすることができる。図示例では、前外装体12F及び後外装体12Bの下縁は幅方向WDに沿う直線状となっているが、前外装体12F及び後外装体12Bの少なくとも一方の下縁が脚周りに沿うような曲線状となっていてもよい。また、図19に示すように、外装体12F,12Bが、前身頃Fから後身頃Bにかけて股間を通り連続する一体的なものとすることもできる(外装一体タイプ)。
外装二分割タイプのパンツタイプ使い捨ておむつの場合、図13、図14及び図15に示すように、脚開口LOの側部の縁は前述の内装体200のサイドフラップ70になり、脚開口LOの上部の縁は、前外装体12F及び後外装体12Bにおける内装体200の両側に延びるウイング領域Jの下縁となっている。ウイング領域Jの下端部80は、一本(又は複数本でもよい)の細長状の下端部弾性部材83が幅方向に沿ってかつ互いに間隔を空けて設けられた下端部伸縮領域UGを有している。そして、このウイング領域Jの下端部80は、その下縁に沿って幅方向に続く中空部80Hを有しており、下端部弾性部材83の収縮により、ウイング領域Jの下端部80における中空部80Hを含む部分が幅方向に収縮して下端部ギャザーが形成されていると好ましい。
内装体200の外装体12F,12Bに対する固定は、ヒートシール、超音波シールのような素材溶着による接合手段や、ホットメルト接着剤により行うことができる。図示例では、内装体200の裏面、つまりこの場合は液不透過性シート11の裏面及び起き上がりギャザー60の付根部分65に塗布されたホットメルト接着剤を介して外装体12F,12Bの内面に対して固定されている。この内装体200と外装体12F,12Bとを固定する内外接合部201,202は、図2に示すように、両者が重なる領域のほぼ全体に設けることができ、例えば内装体200の幅方向両端部を除いた部分に設けることもできる。
外装二分割タイプのパンツタイプ使い捨ておむつでは、前外装体12F及び後外装体12Bとの間に内装体200が露出するため、内装体200の裏面に液不透過性シート11が露出しないように、内装体200の裏面には、前外装体12Fと内装体200との間から、後外装体12Bと内装体200との間にわたるカバー不織布13を備えていることが好ましい。カバー不織布13の内面及び外面は、それぞれ対向面にホットメルト接着剤を介して接着することができる。カバー不織布13に用いる不織布は、例えば外装体12F,12Bの素材と同様のものを適宜選択することができる。
上記説明における不織布としては、部位や目的に応じて公知の不織布を適宜使用することができる。不織布の構成繊維としては、例えばポリエチレン又はポリプロピレン等のオレフィン系、ポリエステル系、ポリアミド系等の合成繊維(単成分繊維の他、芯鞘等の複合繊維も含む)の他、レーヨンやキュプラ等の再生繊維、綿等の天然繊維等、特に限定なく選択することができ、これらを混合して用いることもできる。不織布の柔軟性を高めるために、構成繊維を捲縮繊維とするのは好ましい。また、不織布の構成繊維は、親水性繊維(親水化剤により親水性となった疎水性繊維を含む)であっても、疎水性繊維若しくは撥水性繊維(撥水剤により撥水性となった撥水性繊維を含む)であってもよい。また、不織布は一般に繊維の長さや、シート形成方法、繊維結合方法、積層構造により、短繊維不織布、長繊維不織布、スパンボンド不織布、メルトブローン不織布、スパンレース不織布、サーマルボンド(エアスルー)不織布、ニードルパンチ不織布、ポイントボンド不織布、積層不織布(スパンボンド層間にメルトブローン層を挟んだSMS不織布、SMMS不織布等)等に分類されるが、これらのどの不織布も用いることができる。
明細書中の以下の用語は、明細書中に特に記載が無い限り、以下の意味を有するものである。
Claims (13)
- 股間部の両側部に、吸収体を有しないサイドフラップを有し、
前記サイドフラップは、一本又は複数本の細長状のサイド弾性部材が前後方向に沿ってかつ互いに間隔を空けて設けられたサイド伸縮領域を有している、
使い捨て着用物品において、
前記サイドフラップは、その側縁に沿って前後方向に続く中空部を有しており、
前記サイド弾性部材の収縮により、前記サイドフラップにおける前記中空部を含む部分が前後方向に収縮してサイドギャザーが形成されている、
ことを特徴とする使い捨て着用物品。 - 前記サイドフラップは、前記サイド弾性部材の表側に面する第1シート層と、サイド弾性部材の裏側に面する第2シート層を含めて三層以上のシート層を有するとともに、最も表側のシート層及び最も裏側のシート層の少なくとも一方とそれに重なる内部シート層とが接合されていない非接合部を有しており、
前記非接合部は、最も側方に位置するサイド弾性部材と前記サイドフラップの側縁との間の領域を含む幅方向範囲で前後方向に続いており、
前記最も表側のシート層及び最も裏側のシート層の少なくとも一方とそれに重なる内部シート層との隙間が、前記非接合部の幅方向両側で閉じられていることにより、前記中空部が形成されている、
請求項1記載の使い捨て着用物品。 - 前記中空部は、前記サイドフラップの側縁から幅方向の中央側に2mm以上離間した位置まで延びている、
請求項1記載の使い捨て着用物品。 - 前記サイドフラップにおける、側縁から幅方向の中央側に2~15mmまでの部分は、前記サイド弾性部材を含まず、かつ前記中空部の一部又は全部を含む、
請求項1~3のいずれか1項に記載の使い捨て着用物品。 - 前記中空部の表側に、少なくとも一本の前記サイド弾性部材を有する、
請求項1~4のいずれか1項に記載の使い捨て着用物品。 - 前記中空部は、厚み方向に重なるように複数設けられている、
請求項1~5のいずれか1項に記載の使い捨て着用物品。 - 前記サイドフラップは、前記中空部の表側から前記サイドフラップの側縁で折り返されて前記中空部の裏側に至る折り返しシート層を有しており、
前記中空部は前記折り返しシート層の折り返し位置まで側方に延びている、
請求項1~6のいずれか1項に記載の使い捨て着用物品。 - 前記サイドフラップは、前記サイドフラップの側縁で折り返された折り返しシート層を二重に有しており、
前記サイドフラップにおける最も表側のシート層及び最も裏側のシート層は、それぞれ外部に位置する折り返しシート層の折り位置を境として表側の部分及び裏側の部分であり、
前記サイド弾性部材は、外部に位置する折り返しシート層の折り位置を境として表側の部分と、内部に位置する折り返しシート層の折り位置を境として表側の部分との間における、折り位置よりも幅方向の中央側に離れた位置に固定されており、
最も側方に位置するサイド弾性部材と前記サイドフラップの側縁との間では、厚み方向に隣接するシート層のすべてが接合されていないことにより、各シート層の間に中空部がそれぞれ形成されている、
請求項1~6のいずれか1項に記載の使い捨て着用物品。 - 前記サイドフラップは、前記サイドフラップの側縁で折り返された折り返しシート層を二重に有しており、
前記サイドフラップにおける最も表側のシート層及び最も裏側のシート層は、それぞれ外部に位置する折り返しシート層の折り位置を境として表側の部分及び裏側の部分であり、
前記サイド弾性部材は、内部に位置する折り返しシート層の折り位置を境として表側の部分及び裏側の部分の間における、折り位置よりも幅方向の中央側に離れた位置に固定されており、
最も側方に位置するサイド弾性部材と前記サイドフラップの側縁との間では、前記最も表側のシート層と、前記内部に位置する折り返しシート層の折り位置を境として表側の部分とが接合されていないことにより、それらシート層の間に中空部が形成されているとともに、前記最も裏側のシート層と、前記内部に位置する折り返しシート層の折り位置を境として裏側の部分とが接合されていないことにより、それらシート層の間に中空部が形成されている、
請求項1~6のいずれか1項に記載の使い捨て着用物品。 - 前記サイド弾性部材よりも幅方向の中央側の位置を起点として起き上がる起き上がりギャザーが前後方向に沿って延びており、
前記起き上がりギャザーは、先端部で二つ折りされて二層構造となっているギャザーシートと、少なくとも先端部における前記二層構造の層間に前後方向に沿って設けられた細長状のギャザー弾性部材とを有しており、
前記サイドフラップの両側部は、前記ギャザーシートからなる二層構造が前記起点から前記サイドフラップの側縁まで延びる第1部分と、前記ギャザーシートからなる二層構造が前記サイドフラップの側縁で折り返されて幅方向の中央側に延びる第2部分とを有しており、
前記二重の折り返しシート層は、前記ギャザーシートの前記第1部分及び第2部分である、
請求項7又は8記載の使い捨て着用物品。 - 前記サイド弾性部材は、幅方向に間隔を空けて複数本設けられており、
展開状態の前記サイド伸縮領域における前記サイド弾性部材の伸長率は、側方に位置するものほど低い、
請求項1~10のいずれか1項に記載の使い捨て着用物品。 - 前身頃及び後身頃の少なくとも胴周り部を構成する外装体と、前身頃から後身頃にわたるように外装体に対して取り付けられた、吸収体を内蔵する内装体と、ウエスト開口と、左右一対の脚開口とを備えた、パンツタイプ使い捨て着用物品であって、
前記内装体の両側部に、前記サイドフラップを有している、
請求項1~11のいずれか1項に記載の使い捨て着用物品。 - 前身頃の少なくとも胴周り部を構成する前外装体及び後身頃の少なくとも胴周り部を構成する後外装体を別々に備え、これら前外装体及び後外装体が前後方向に離間しており、
前記内装体が、前記前外装体から前記後外装体にかけて前後方向に延在し、かつ前記前外装体及び後外装体にそれぞれ接合され、
前記前外装体の両側部と前記後外装体の両側部とがそれぞれ接合されたサイドシール部と、ウエスト開口及び左右一対の脚開口とを備え、
前記前外装体及び前記後外装体における前記内装体の両側に延びるウイング領域の下縁が、前記脚開口の上部の縁となっており、
前記ウイング領域の下端部は、一本又は複数本の細長状の下端部弾性部材が幅方向に沿ってかつ互いに間隔を空けて設けられた下端部伸縮領域を有しており、
前記ウイング領域の下端部は、その下縁に沿って幅方向に続く中空部を有しており、
前記下端部弾性部材の収縮により、前記ウイング領域の下端部における前記中空部を含む部分が幅方向に収縮して下端部ギャザーが形成されている、
請求項12記載の使い捨て着用物品。
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US17/257,653 US20210267817A1 (en) | 2018-07-31 | 2019-07-03 | Disposable wearable article |
RU2021102054A RU2769810C1 (ru) | 2018-07-31 | 2019-07-03 | Одноразовое изделие для ношения |
EP19844355.8A EP3831352B1 (en) | 2018-07-31 | 2019-07-03 | Disposable wearable article |
KR1020217000394A KR102655550B1 (ko) | 2018-07-31 | 2019-07-03 | 일회용 착용 물품 |
CN201980045292.1A CN112384180B (zh) | 2018-07-31 | 2019-07-03 | 一次性穿着物品 |
BR112021001569-8A BR112021001569A2 (pt) | 2018-07-31 | 2019-07-03 | artigo para uso descartável |
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JP2018143835A JP7042186B2 (ja) | 2018-07-31 | 2018-07-31 | 使い捨て着用物品 |
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JP2019-101719 | 2019-05-30 | ||
JP2019101719A JP7456731B2 (ja) | 2019-05-30 | 2019-05-30 | 使い捨て着用物品 |
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JP6488040B1 (ja) * | 2018-03-20 | 2019-03-20 | 大王製紙株式会社 | テープタイプ使い捨ておむつ |
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- 2019-07-03 US US17/257,653 patent/US20210267817A1/en not_active Abandoned
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- 2019-07-03 BR BR112021001569-8A patent/BR112021001569A2/pt active Search and Examination
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TWI780349B (zh) | 2022-10-11 |
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