US20010016722A1 - Trunks-type disposable pants - Google Patents
Trunks-type disposable pants Download PDFInfo
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- US20010016722A1 US20010016722A1 US09/785,638 US78563801A US2001016722A1 US 20010016722 A1 US20010016722 A1 US 20010016722A1 US 78563801 A US78563801 A US 78563801A US 2001016722 A1 US2001016722 A1 US 2001016722A1
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- sheets
- inner sheets
- pants
- rear side
- cutouts
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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
- A61F13/494—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means
- A61F13/49473—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means the edge leakage prevention means having a continuous closed form, e.g. circle, ellipse, rectangle
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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
- A61F13/496—Absorbent articles specially adapted to be worn around the waist, e.g. diapers in the form of pants or briefs
-
- 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
- A61F13/4963—Absorbent articles specially adapted to be worn around the waist, e.g. diapers in the form of pants or briefs characterized by the seam
-
- 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
- A61F13/53—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 absorbing medium
- A61F13/539—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 absorbing medium characterised by the connection of the absorbent layers with each other or with the outer layers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/45—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
- A61F2013/4512—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 folded in special shape during use
- A61F2013/4518—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 folded in special shape during use formed from two separated panels
- A61F2013/4531—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 folded in special shape during use formed from two separated panels by lateral panels joined at the centreline, i.e. along the longitudinal axis
Definitions
- This invention relates to trunks-type disposable pants.
- Japanese Patent Application Publication No. 1994-63072A describes trunks-type disposable pants made by a process comprising steps of placing separately formed with front and rear bodies, bonding these front and rear bodies along bond lines extending on crotch regions of these bodies so as to describe curves being convex upward and attaching a longitudinally larger liquid-absorbent panel to the inner surface of the crotch region. Excretion is absorbed by the liquid-absorbent panel attached to the crotch region.
- the longitudinally larger liquid-absorbent panel has a desired width dimension and attached to the crotch region so as to extend in horizontal direction.
- Transversely opposite side edges of the panel are compressed between thighs of a wearer and these side edges may give the wearer a feeling of incompatibility as the pants are put on the wearer's body.
- these side edges have not barriers to prevent excretion spread over the upper surface of the panel from leaking through gap defined between both sides of the crotch region and the wearer's thighs.
- trunks-type disposable pants improved so that excretion leak possibly occurring from both sides of a crotch region is reliably avoided without giving a wearer a feeling of incompatibility.
- trunks-type disposable pants having a waist-opening at its top and a pair of leg-openings at its bottom wherein the waist-opening is provided along its peripheral edge having an elastic stretchability circumferentially of the waist-opening.
- the trunks-type disposable pants further comprises a pair of inner sheets confronting each other and a pair of outer sheets lying outside respective the inner sheets, the inner sheets as well as the outer sheets being contoured by upper and lower ends transversely extending in parallel to each other, respectively, and front and rear side portions longitudinally extending in parallel to each other, respectively, the inner sheets are formed between their front and rear side portions with cutouts depressed from the upper ends toward the lower ends and provided with mat-like liquid-absorbent panels attached to opposed surfaces of the inner sheets so that the opposed surfaces of the inner sheets are bonded together by means of bond lines extending in parallel to the cutouts and partially extending below the liquid-absorbent panels, and opposed surfaces of the inner sheets and the outer sheets are bonded together along the front and rear side portions of these sheets.
- the trunks-type disposable pants according to this invention has a simplified construction such that the inner sheets are placed upon each other and the opposed surfaces of these inner sheets are bonded together while the respective inner sheets are placed upon the respectively adjacent outer sheets and the opposed surfaces of respective pairs of the adjacent inner and outer sheets are bonded together.
- Such simplified construction facilitates the pants to be made and is suitable for disposable sanitary article.
- the novel pants having the side sheets bonded to the inner sheets in the vicinity of their bottom sides, the side sheets and the regions in the opposed surfaces of the inner sheets extending from the bottom sides to the bond lines are expanded outward transversely of the pants as the elastic members attached to the respective side sheets contract. Consequently, these sheets form the pocket opening upwardly of the pants.
- the pocket includes therein the liquid-absorbent panels.
- the side sheets and the inner sheets define the barriers so that the amount of excretion discharged into the pocket is absorbed by the panels and the barriers prevent any leak of the excretion from possibly occurring in the vicinity of the crotch region.
- the regions in the opposed surfaces of the inner sheets extending from the bottom sides to the bond lines are expanded outward transversely of the pants as the elastic members bonded to the inner sheets contract. Consequently, the inner sheets form the pocket opening upwardly of the pants.
- the pocket includes therein the liquid-absorbent panels and the respective inner sheets define barriers functioning to prevent any amount of the excretion having been discharged into the pocket and absorbed by the panels from leaking from the crotch region.
- the panels extend in parallel to the inner sheets substantially in vertical direction and therefore are less bulky in the crotch region than when these panels in horizontal direction. In this manner, it is not apprehended that the panels give the wearer a feeling of incompatibility.
- the novel pants achieve a substantially higher bonding strength as measured circumferentially of the pants than that achieved by the pants in which the opposed surfaces are not bonded together along the regions. This is because, according to this invention, the opposed surfaces of the inner sheets are bonded together along regions of the front and rear side portions extending in the vicinity of the respective upper ends of said inner sheets.
- FIG. 1 is a perspective view showing one embodiment of a trunks-type disposable pants according to this invention as viewed from the front;
- FIG. 2 is an exploded perspective view showing the pants of FIG. 1;
- FIG. 3 is a perspective view showing the pants of FIG. 1 as viewed in a section taken along line A-A in FIG. 1;
- FIG. 4 is a sectional view showing the pants of FIG. 1 as taken along line B-B;
- FIG. 5 is a perspective view showing the trunks-type disposable pants as one embodiment of this invention different from that of FIG. 1 as viewed from the front;
- FIG. 6 is an exploded perspective view showing the pants of FIG. 5;
- FIG. 7 is a perspective view showing the pants of FIG. 5 as viewed in a section taken along line C-C in FIG. 5;
- FIG. 8 is a sectional view showing the pants of FIG. 5 as taken along line D-D in FIG. 5.
- FIG. 1 is a perspective view showing disposable pants 1 as partially broken away and FIG. 2 is an exploded perspective view showing the pants of FIG. 1.
- a pair of inner sheets 2 A, 2 B are opposed to each other symmetrically with respect to a plane and a pair of outer sheets 3 A, 3 B are arranged outside the respective inner sheets 2 A, 2 B so as to be opposed to each other also with respect to a plane.
- Liquid-resistant side sheets 4 A, 4 B are interposed between the inner and the outer sheets 2 A, 2 B; 3 A, 3 B, respectively.
- the pants 1 further comprise a pair of mat-like liquid-absorbent panels 5 A, 5 B.
- the inner sheets 2 A, 2 B and the outer sheets 3 A, 3 B define together a waist-opening 6 along a top of the pants 1 and a pair of leg-openings 7 along a bottom of the pants 1 .
- the waist-opening 6 is provided along its peripheral edge with a film-like elastically stretchable member 8 bonded with tension thereto so as to extend circumferentially of the pants 1 .
- the inner sheets 2 A, 2 B is contoured by upper and lower ends 2 a, 2 b extending in parallel to each other transversely of the pants 1 and a front and rear side portions 2 c, 2 d extending in parallel to each other longitudinally of the pants 1 .
- the inner sheet 2 A, 2 B is formed between the front and rear side portions 2 c, 2 d with a cutout 9 depressed from the upper end 2 a toward the lower end 2 b.
- This cutout 9 is contoured by opposite sides 9 a of the inner sheet 2 A, 2 B extending longitudinally thereof and a bottom side 9 b of the inner sheet 2 A, 2 B transversely extending between respective lower ends of the opposite sides 9 a.
- the side sheet 4 A, 4 B transversely extends above the panel 5 A, 5 B.
- the rear side edge 2 d of the inner sheet 2 A, 2 B gets nearer, describing a circular arc, to a longitudinal center line Y 1 bisecting a dimension between the front side portion 2 c and the rear side portion 2 d as the rear side edge 2 d extends from the upper end 2 a toward the lower end 2 b.
- the panel 5 A, 5 B is placed in a region surrounded by the front and rear side portions 2 c, 2 d, the lower end 2 b and the bottom side 9 b of the inner sheet 2 A, 2 B and bonded to a surface of the sheet 2 A, 2 B opposed to the panel 5 A, 5 B.
- the side sheet 4 A, 4 B is of a rectangular shape which is transversely longer and has a fixed end 4 a bonded to the inner sheet 2 A, 2 B in the vicinity of its bottom side 9 b, a free end 4 b extending across the cutout 9 above the fixed end 4 a, and transversely opposite fixed ends 4 c longitudinally extending in parallel to the front and rear side portions 2 c, 2 d of the inner sheet 2 A, 2 B and bonded to the inner sheet 2 A, 2 b in the vicinity of its opposite sides 9 a.
- the free end 4 b is provided with a transversely extending elastically stretchable member 10 bonded with tension thereto so that the member 10 is covered with a portion of the free end 4 b.
- the outer sheet 3 A, 3 B is contoured by upper and lower ends 3 a, 3 b transversely extending in parallel to each other and front and rear side edges 3 c, 3 d longitudinally extending in parallel to each other.
- the rear side edge 3 d of the outer sheet 3 A, 3 B gets nearer, describing a circular arc, to a longitudinal center line Y 2 bisecting a dimension between the front side edge 3 c and the rear side edge 3 d as the rear side edge 3 d extends from the upper end 3 a toward the lower end 3 b.
- Surface of the outer sheet 3 A, 3 B opposed to the inner sheet 2 A, 2 B is provided along its upper end 3 a with a transversely extending elastic member 8 bonded thereto.
- the inner sheets 2 A, 2 B are placed upon each other with the respective center lines Y 1 brought in line with each other and then the opposed surfaces thereof are continuously or intermittently bonded to each other along bond lines 11 .
- These bond lines 11 extend in parallel to the cutouts 9 , describing circular arcs, from the upper ends 2 a toward the lower ends 2 b of the sheets 2 A, 2 B, respectively.
- the portions of the bond lines 11 describing the circular arcs extend between the panels 5 A, 5 B and the lower ends 2 b of the sheets 2 A, 2 B.
- the respective fixed ends 4 a of the side sheets 4 A, 4 B are partially folded back to respective inner surfaces of the side sheets 4 A, 4 B and these fixed ends 4 a are bonded to respective outer surfaces of the sheets 2 A, 2 B in the vicinity of their respective bottom sides 9 b.
- the transversely opposite ends 4 c also are bonded to the sheets 2 A, 2 B in the vicinity of their opposed sides 9 a with the elastic members 10 being kept under tension.
- the inner sheets 2 A, 2 B and the outer sheets 3 A, 3 B are placed upon one another, respectively, with the center lines Y 1 , Y 2 of these inner and outer sheets 2 A, 2 B; 3 A, 3 B brought in line with one another, respectively.
- the upper and lower ends 2 a, 3 a; 2 b, 3 b as well as the front and rear side portions 2 c, 3 c; 2 d, 3 d of the inner and outer sheets 2 A, 2 B; 3 A, 3 B are also brought in lines, respectively, with one another.
- the inner and outer sheets 2 A, 3 A have their surfaces opposed to each other continuously or intermittently bonded to each other by means of bond lines 12 extending along the front and rear side portion 2 c, 2 d; 3 c, 3 d, respectively.
- the inner and outer sheets 2 B, 3 B have their surfaces opposed to each other continuously or intermittently bonded to each other by means of bond lines 12 extending along the front and rear side portions 2 c, 2 d; 3 c, 3 d, respectively.
- FIG. 3 is a perspective view showing the pants of FIG. 1 as viewed in a section taken along line A-A in FIG. 1 and FIG. 4 is a sectional view showing the pants of FIG. 1 as taken along line B-B.
- the respective opposed sides 9 a are placed upon each other so as to be oriented inwardly of the pants 1 .
- the inner sheets 2 A, 2 B and the outer sheets 3 A, 3 B have their front and rear side portions 2 c, 2 d; 3 c, 3 d placed upon one another so as to be oriented outwardly of the pants 1 .
- the respective side sheets 4 A, 4 B as well as the opposed surfaces of the inner sheets 2 A, 2 B extending from their bottom sides 9 b to the respective bond lines 11 expand outward transversely of the pants 1 as the elastic members 10 bonded with tension to the respective free ends 4 b of the side sheets 4 A, 4 B contract so that these sheets 2 A, 2 B, 4 A, 4 B form a pocket P opening upwardly of the pants
- the respective fixed ends 4 a of the side sheets 4 A, 4 B have been folded back toward the inner surfaces thereof and bonded to the respective outer surfaces of the inner sheets 2 A, 2 B.
- the respective free ends 4 b of the side sheets 4 A, 4 B are biased to tilt outward transversely of the pants 1 and thereby to open the pocket P.
- the side sheets 4 A, 4 B and the inner sheets 2 A, 2 B forming the pocket P serve as barriers of the pocket P.
- Excretion discharged into the pocket P is absorbed by the panels 5 A, 5 B lying within the pocket P.
- the barriers function to prevent excretion leak from occurring in the vicinity of a crotch region.
- the panels 5 A, 5 B extend substantially in vertical direction in parallel to the inner sheets 2 A, 2 B and, in a wearer's crotch region, are less bulky than in the case of the panels 5 A, 5 B extending in horizontal direction. Thus, it is not apprehended that these panels 5 A, 5 B might give the wearer a feeling of incompatibility.
- FIG. 5 is a perspective view showing the trunks-type disposable pants 1 as a specific embodiment of this invention different from that of FIG. 1 as viewed from the front and
- FIG. 6 is an exploded perspective view showing the pants 1 of FIG. 5.
- the inner sheets 2 A, 2 B are symmetrically opposed to each other with respect to a plane and the outer sheets 3 A, 3 B are also symmetrically opposed to each other with respect to a plane outside the inner sheets 2 A, 2 B.
- the pants 1 comprise a pair of inner sheets 2 A, 2 B, a pair of outer sheets 3 A, 3 B and a pair of mat-like liquid-absorbent panels 5 A, 5 B so as to define a waist-opening 6 at a top of the pants 1 and a pair of leg-openings 7 at a bottom of the pants 1 .
- the waist-opening 6 is provided along its peripheral edge with a circumferentially extending film-like elastically stretchable member 8 bonded with tension thereto.
- the inner sheets 2 A, 2 B is contoured by upper and lower ends 2 a, 2 b extending in parallel to each other transversely of the pants 1 and a front and rear side portions 2 c, 2 d extending in parallel to each other longitudinally of the pants 1 .
- the inner sheet 2 A, 2 B is formed between the front and rear side portions 2 c, 2 d with a cutout 9 depressed from the upper end 2 a toward the lower end 2 b.
- the rear side edge 2 d of the inner sheet 2 A, 2 B gets nearer, describing a circular arc, to a longitudinal center line Y 1 as the rear side edge 2 d extends from the upper end 2 a toward the lower end 2 b.
- the inner sheets 2 A, 2 B are provided in the vicinity of their bottom sides 9 b with elastically stretchable members 13 transversely extending above the respective panels 5 A, 5 B in a manner such that these members 13 are bonded with tension to the respective inner sheets 2 A, 2 B and covered with portions thereof.
- the panel 5 A, 5 B is placed in a region surrounded by the front and rear side portions 2 c, 2 d, the lower end 2 b and the bottom side 9 b of the inner sheet 2 A, 2 B and bonded to a surface of the sheet 2 A, 2 B opposed to the panel 5 A, 5 B.
- the outer sheet 3 A, 3 B is contoured by upper and lower ends 3 a, 3 b transversely extending in parallel to each other and front and rear side edges 3 c, 3 d longitudinally extending in parallel to each other.
- the rear side edge 3 d of the outer sheet 3 A, 3 B gets nearer, describing a circular arc, to a longitudinal center line Y 2 bisecting a dimension between the front side edge 3 c and the rear side edge 3 d as the rear side edge 3 d extends from the upper end 3 a toward the lower end 3 b.
- Surface of the outer sheet 3 A, 3 B opposed to the inner sheet 2 A, 2 B is provided along its upper end 3 a with a transversely extending elastic member 8 bonded thereto.
- the inner sheets 2 A, 2 B are placed upon each other with the respective center lines Y 1 brought in line with each other and then the opposed surfaces thereof are continuously or intermittently bonded to each other along bond lines 11 .
- These bond lines 11 extend in parallel to the cutouts 9 , describing circular arcs, from the upper ends 2 a toward the lower ends 2 b of the sheets 2 A, 2 B, respectively.
- the portions of the bond lines 11 describing the circular arcs extend between the panels 5 A, 5 B and the lower ends 2 b of the sheets 2 A, 2 B.
- the respective fixed ends 4 a of the side sheets 4 A, 4 B are partially folded back to respective inner surfaces of the side sheets 4 A, 4 B and these fixed ends 4 a are bonded to respective outer surfaces of the sheets 2 A, 2 B in the vicinity of their respective bottom sides 9 b.
- the transversely opposite ends 4 c also are bonded to the sheets 2 A, 2 B in the vicinity of their opposed sides 9 a with the elastic members 10 being kept under tension.
- the inner sheets 2 A, 2 B and the outer sheets 3 A, 3 B are placed upon one another, respectively, with the center lines Y 1 , Y 2 of these inner and outer sheets 2 A, 2 B; 3 A, 3 B brought in line with one another, respectively. Then the inner and outer sheets 2 A, 3 A have their surfaces opposed to each other continuously or intermittently bonded to each other by means of bond lines 12 extending along the front and rear side portions 2 c, 2 d; 3 c, 3 d, respectively. Similarly, the inner and outer sheets 2 B, 3 B have their surfaces opposed to each other continuously or intermittently bonded to each other by means of bond lines 12 extending along the front and rear side portions 2 c, 2 d; 3 c, 3 d, respectively.
- the front and rear side portions 2 c, 2 d of the sheets 2 A, 2 B have portions lying in the upper ends 2 a and bonded to each other along bond lines 14 . These portions bonded together provide a higher bonding strength as measured circumferentially of the pants 1 than the bonding strength which will be provided by these portions not bonded together. In this manner, there is no anxiety that the inner sheets 2 A, 2 B might be separated from each other as the pants 1 are put on the wearer's body and the waist-opening is circumferentially stretched.
- FIG. 7 is a perspective view showing the pants of FIG. 5 as viewed in a section taken along line C-C in FIG. 5 and FIG. 8 is a sectional view taken along line D-D in FIG. 5.
- the inner sheets 2 A, 2 B are placed upon each other so that the respective pairs of opposed sides 9 a face inwardly of the pants 1 in contact with each other.
- the front and rear side portions 2 c, 2 d of the respective inner sheets 2 A, 2 B face outwardly of the pants 1 in contact with the front and rear side edges 3 c, 3 d of the adjacent outer sheets 3 A, 3 B, respectively.
- the opposed surfaces of the inner sheets 2 A, 2 B extending from their bottom sides 9 b to the respective bond lines 11 expand outward transversely of the pants 1 as elastic members 13 contract, resulting in formation of a pocket P opening upwardly of the pants 1 .
- the inner sheets 2 A, 2 B forming the pocket P serve as barriers of the pocket P.
- Excretion discharged into the pocket P is absorbed by the panels 5 A, 5 B lying within the pocket P.
- the barriers function to prevent excretion leak from occurring in the vicinity of a crotch region.
- the panels 5 A, 5 B extend substantially in vertical direction in parallel to the inner sheets 2 A, 2 B and, in a wearer's crotch region, are substantially less bulky than in the case of the panels 5 A, 5 B extending in horizontal direction. Thus, it is not apprehended that these panels 5 A, 5 B give the wearer a feeling of incompatibility.
- the surfaces of the inner sheets 2 A, 2 B opposed to each other have their upper ends 2 a not bonded to each other and therefore it is not apprehended that the regions of the sheets 2 A, 2 B extending in the vicinity of their upper ends 2 a might give the wearer a feeling of stiffness even when these regions are pressed against the wearer's skin under a contractile force of the elastic members 8 .
- the sheets 2 A, 2 B are bonded together leaving innermost edges of the opposed sides 9 a free over an extent sufficient to alleviate a stiffness of the bonded regions even when these innermost edges come in contact with the wearer's crotch. In this way, stimulation possibly experienced by the wearer's skin can be effectively alleviated.
- the surfaces of the inner sheet 2 A and the adjacent outer sheet 3 A as well as the surfaces of the inner sheet 2 B and the adjacent outer sheet 3 B are bonded to one another leaving outermost edges of their front and rear sides 2 c, 3 c, 2 d, 3 d free over an extent sufficient to alleviate a stiffness of the bonded regions even when these innermost edges come in contact with the wearer's arms. In this way, stimulation possibly experienced by the wearer's skin is effectively alleviated.
- the inner sheets 2 A, 2 B and/or the outer sheets 3 A, 3 B may be formed with a nonwoven fabric of thermoplastic fiber.
- the side sheets 4 A, 4 B also may be formed with a nonwoven fabric of thermoplastic fiber.
- the nonwoven fabric made porous to improve its moisture-pervious property or the nonwoven fabric formed on its sheet surface with irregularities to improve its cushioning property also may be used for this purpose.
- the inner sheets 2 A, 2 B destined to come in direct contact with the wearer's crotch are preferably formed with the material offering high liquid-permeability, moisture-permeability and softness, for example, rayon or cotton fiber containing nonwoven fabric.
- SMS nonwoven fabric comprising high water-resistance melt blown nonwoven fabric having opposite sheet surfaces each laminated with sheet surface of spun bond nonwoven fabric having a high strength and a high flexibility.
- the SMS nonwoven fabric is obtained by sandwiching the melt blown nonwoven fabric between two layers of spun bond nonwoven fabric and then bonding these melt blown nonwoven fabric and spun bond nonwoven fabric together using a technique of press working.
- Use of the SMS nonwoven fabric advantageously results in the pants 1 having a high strength, a high water-resistance and a comfortable touch.
- the outer sheets 3 A, 3 B may be also formed with a nonwoven fabric which is stretchable transversely thereof or both transversely and longitudinally thereof.
- the elastic members 8 associated with the waist-opening provided along the upper ends 3 a of the sheets 3 A, 3 B may be eliminated.
- the elastic members 8 , 10 , 13 may be formed with a synthetic rubber, a natural rubber, a stretchable film containing synthetic rubber, or a spun bond nonwoven fabric or a melt blown nonwoven fabric containing synthetic rubber as a principal ingredient. It is also possible to cover the elastic members 8 , 10 , 13 with nonwoven fabric and to bond the elastic members with tension to said nonwoven fabric.
- the liquid-absorbent panel 5 A, 5 B comprises a mixture of fluff pulp and high absorption polymer grains compressed to a desired thickness and entirely covered with a water-pervious sheet such as tissue paper (not shown). Bonding of the panels 5 A, 5 B, the elastic members 8 , 10 , 13 and the sheets 2 A, 2 B, 3 A, 3 B, 4 A, 4 B may be carried out using suitable adhesive such as hot melt adhesive, pressure-sensitive adhesive or a fusing technique such as heat-sealing or supersonic sealing.
- suitable adhesive such as hot melt adhesive, pressure-sensitive adhesive or a fusing technique such as heat-sealing or supersonic sealing.
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- Epidemiology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
- Undergarments, Swaddling Clothes, Handkerchiefs Or Underwear Materials (AREA)
Abstract
Disclosed trunks-type disposable pants includes a pair of inner sheets and a pair of outer sheets, the inner sheets have cutouts depressed from the upper ends toward the lower ends their front and rear side portions with cutouts depressed from the upper ends toward the lower ends and liquid-absorbent panels attached to opposed surfaces of the inner sheets in the vicinity of the respective cutouts so that the opposed surfaces of the inner sheets may be bonded together by means of bond lines extending in parallel to the cutouts and partially extending below the liquid-absorbent panels and opposed surfaces of the inner sheets and the outer sheets are bonded together along the front and rear side portions of these sheets.
Description
- This invention relates to trunks-type disposable pants.
- Japanese Patent Application Publication No. 1994-63072A describes trunks-type disposable pants made by a process comprising steps of placing separately formed with front and rear bodies, bonding these front and rear bodies along bond lines extending on crotch regions of these bodies so as to describe curves being convex upward and attaching a longitudinally larger liquid-absorbent panel to the inner surface of the crotch region. Excretion is absorbed by the liquid-absorbent panel attached to the crotch region.
- In the pants disclosed in the Gazette, the longitudinally larger liquid-absorbent panel has a desired width dimension and attached to the crotch region so as to extend in horizontal direction. Transversely opposite side edges of the panel are compressed between thighs of a wearer and these side edges may give the wearer a feeling of incompatibility as the pants are put on the wearer's body. In addition, these side edges have not barriers to prevent excretion spread over the upper surface of the panel from leaking through gap defined between both sides of the crotch region and the wearer's thighs.
- In view of the problem as has been described above, it is an object of this invention to provide trunks-type disposable pants improved so that excretion leak possibly occurring from both sides of a crotch region is reliably avoided without giving a wearer a feeling of incompatibility.
- According to this invention, there is provided trunks-type disposable pants having a waist-opening at its top and a pair of leg-openings at its bottom wherein the waist-opening is provided along its peripheral edge having an elastic stretchability circumferentially of the waist-opening.
- The trunks-type disposable pants further comprises a pair of inner sheets confronting each other and a pair of outer sheets lying outside respective the inner sheets, the inner sheets as well as the outer sheets being contoured by upper and lower ends transversely extending in parallel to each other, respectively, and front and rear side portions longitudinally extending in parallel to each other, respectively, the inner sheets are formed between their front and rear side portions with cutouts depressed from the upper ends toward the lower ends and provided with mat-like liquid-absorbent panels attached to opposed surfaces of the inner sheets so that the opposed surfaces of the inner sheets are bonded together by means of bond lines extending in parallel to the cutouts and partially extending below the liquid-absorbent panels, and opposed surfaces of the inner sheets and the outer sheets are bonded together along the front and rear side portions of these sheets.
- The trunks-type disposable pants according to this invention has a simplified construction such that the inner sheets are placed upon each other and the opposed surfaces of these inner sheets are bonded together while the respective inner sheets are placed upon the respectively adjacent outer sheets and the opposed surfaces of respective pairs of the adjacent inner and outer sheets are bonded together. Such simplified construction facilitates the pants to be made and is suitable for disposable sanitary article.
- With the novel pants having the side sheets bonded to the inner sheets in the vicinity of their bottom sides, the side sheets and the regions in the opposed surfaces of the inner sheets extending from the bottom sides to the bond lines are expanded outward transversely of the pants as the elastic members attached to the respective side sheets contract. Consequently, these sheets form the pocket opening upwardly of the pants. The pocket includes therein the liquid-absorbent panels. The side sheets and the inner sheets define the barriers so that the amount of excretion discharged into the pocket is absorbed by the panels and the barriers prevent any leak of the excretion from possibly occurring in the vicinity of the crotch region.
- In the pants having the elastic members bonded to the respective inner sheets in the vicinity of the bottom sides thereof, the regions in the opposed surfaces of the inner sheets extending from the bottom sides to the bond lines are expanded outward transversely of the pants as the elastic members bonded to the inner sheets contract. Consequently, the inner sheets form the pocket opening upwardly of the pants. The pocket includes therein the liquid-absorbent panels and the respective inner sheets define barriers functioning to prevent any amount of the excretion having been discharged into the pocket and absorbed by the panels from leaking from the crotch region.
- The panels extend in parallel to the inner sheets substantially in vertical direction and therefore are less bulky in the crotch region than when these panels in horizontal direction. In this manner, it is not apprehended that the panels give the wearer a feeling of incompatibility.
- The novel pants achieve a substantially higher bonding strength as measured circumferentially of the pants than that achieved by the pants in which the opposed surfaces are not bonded together along the regions. This is because, according to this invention, the opposed surfaces of the inner sheets are bonded together along regions of the front and rear side portions extending in the vicinity of the respective upper ends of said inner sheets.
- FIG. 1 is a perspective view showing one embodiment of a trunks-type disposable pants according to this invention as viewed from the front;
- FIG. 2 is an exploded perspective view showing the pants of FIG. 1;
- FIG. 3 is a perspective view showing the pants of FIG. 1 as viewed in a section taken along line A-A in FIG. 1;
- FIG. 4 is a sectional view showing the pants of FIG. 1 as taken along line B-B;
- FIG. 5 is a perspective view showing the trunks-type disposable pants as one embodiment of this invention different from that of FIG. 1 as viewed from the front;
- FIG. 6 is an exploded perspective view showing the pants of FIG. 5;
- FIG. 7 is a perspective view showing the pants of FIG. 5 as viewed in a section taken along line C-C in FIG. 5; and
- FIG. 8 is a sectional view showing the pants of FIG. 5 as taken along line D-D in FIG. 5.
- Details of disposable pants of trunks-type according to this invention will be more fully understood from the description given hereunder with reference to the accompanying drawings.
- FIG. 1 is a perspective view showing
disposable pants 1 as partially broken away and FIG. 2 is an exploded perspective view showing the pants of FIG. 1. In FIG. 2, a pair ofinner sheets outer sheets inner sheets resistant side sheets outer sheets - In addition to these pair of symmetric
inner sheets outer sheets resistant side sheets pants 1 further comprise a pair of mat-like liquid-absorbent panels - In the
pants 1, theinner sheets outer sheets pants 1 and a pair of leg-openings 7 along a bottom of thepants 1. The waist-opening 6 is provided along its peripheral edge with a film-like elasticallystretchable member 8 bonded with tension thereto so as to extend circumferentially of thepants 1. - The
inner sheets lower ends pants 1 and a front andrear side portions pants 1. Theinner sheet rear side portions cutout 9 depressed from theupper end 2 a toward thelower end 2 b. Thiscutout 9 is contoured byopposite sides 9 a of theinner sheet bottom side 9 b of theinner sheet opposite sides 9 a. - In the vicinity of the
bottom sides 9 b of theinner sheet side sheet panel rear side edge 2 d of theinner sheet front side portion 2 c and therear side portion 2 d as therear side edge 2 d extends from theupper end 2 a toward thelower end 2 b. - The
panel rear side portions lower end 2 b and thebottom side 9 b of theinner sheet sheet panel - The
side sheet fixed end 4 a bonded to theinner sheet bottom side 9 b, afree end 4 b extending across thecutout 9 above thefixed end 4 a, and transversely oppositefixed ends 4 c longitudinally extending in parallel to the front andrear side portions inner sheet inner sheet opposite sides 9 a. Thefree end 4 b is provided with a transversely extending elasticallystretchable member 10 bonded with tension thereto so that themember 10 is covered with a portion of thefree end 4 b. - The
outer sheet lower ends rear side edges rear side edge 3 d of theouter sheet front side edge 3 c and therear side edge 3 d as therear side edge 3 d extends from theupper end 3 a toward thelower end 3 b. Surface of theouter sheet inner sheet upper end 3 a with a transversely extendingelastic member 8 bonded thereto. - To assemble the components illustrated by FIG. 2 in the exploded perspective view and thereby to obtain the
pants 1, theinner sheets bond lines 11. Thesebond lines 11 extend in parallel to thecutouts 9, describing circular arcs, from theupper ends 2 a toward thelower ends 2 b of thesheets bond lines 11 describing the circular arcs extend between thepanels lower ends 2 b of thesheets - After the opposed surfaces of the
inner sheets fixed ends 4 a of theside sheets side sheets fixed ends 4 a are bonded to respective outer surfaces of thesheets respective bottom sides 9 b. At the same time, the transverselyopposite ends 4 c also are bonded to thesheets opposed sides 9 a with theelastic members 10 being kept under tension. - The
inner sheets outer sheets outer sheets lower ends rear side portions outer sheets - The inner and
outer sheets bond lines 12 extending along the front andrear side portion outer sheets bond lines 12 extending along the front andrear side portions - FIG. 3 is a perspective view showing the pants of FIG. 1 as viewed in a section taken along line A-A in FIG. 1 and FIG. 4 is a sectional view showing the pants of FIG. 1 as taken along line B-B. Of the
inner sheets sides 9 a are placed upon each other so as to be oriented inwardly of thepants 1. Theinner sheets outer sheets rear side portions pants 1. - In the
pants 1 assembled, therespective side sheets inner sheets bottom sides 9 b to therespective bond lines 11 expand outward transversely of thepants 1 as theelastic members 10 bonded with tension to the respectivefree ends 4 b of theside sheets sheets pants 1 assembled, the respectivefixed ends 4 a of theside sheets inner sheets free ends 4 b of theside sheets pants 1 and thereby to open the pocket P. - The
side sheets inner sheets panels panels inner sheets panels panels - FIG. 5 is a perspective view showing the trunks-type
disposable pants 1 as a specific embodiment of this invention different from that of FIG. 1 as viewed from the front and FIG. 6 is an exploded perspective view showing thepants 1 of FIG. 5. Referring to FIG. 6, theinner sheets outer sheets inner sheets - The
pants 1 according to this alternative embodiment comprise a pair ofinner sheets outer sheets absorbent panels pants 1 and a pair of leg-openings 7 at a bottom of thepants 1. The waist-opening 6 is provided along its peripheral edge with a circumferentially extending film-like elasticallystretchable member 8 bonded with tension thereto. - The
inner sheets pants 1 and a front andrear side portions pants 1. Theinner sheet rear side portions cutout 9 depressed from theupper end 2 a toward thelower end 2 b. Therear side edge 2 d of theinner sheet rear side edge 2 d extends from theupper end 2 a toward thelower end 2 b. - The
inner sheets bottom sides 9 b with elasticallystretchable members 13 transversely extending above therespective panels members 13 are bonded with tension to the respectiveinner sheets - The
panel rear side portions lower end 2 b and thebottom side 9 b of theinner sheet sheet panel - The
outer sheet rear side edge 3 d of theouter sheet front side edge 3 c and therear side edge 3 d as therear side edge 3 d extends from theupper end 3 a toward thelower end 3 b. Surface of theouter sheet inner sheet upper end 3 a with a transversely extendingelastic member 8 bonded thereto. - To assemble the components illustrated by FIG. 6 in the exploded perspective view and thereby to obtain the
pants 1, theinner sheets bond lines 11 extend in parallel to thecutouts 9, describing circular arcs, from the upper ends 2 a toward the lower ends 2 b of thesheets bond lines 11 describing the circular arcs extend between thepanels sheets - After the opposed surfaces of the
inner sheets side sheets side sheets sheets bottom sides 9 b. At the same time, the transversely opposite ends 4 c also are bonded to thesheets opposed sides 9 a with theelastic members 10 being kept under tension. - The
inner sheets outer sheets outer sheets outer sheets bond lines 12 extending along the front andrear side portions outer sheets bond lines 12 extending along the front andrear side portions - In the
pants 1 according to this alternative embodiment, the front andrear side portions sheets pants 1 than the bonding strength which will be provided by these portions not bonded together. In this manner, there is no anxiety that theinner sheets pants 1 are put on the wearer's body and the waist-opening is circumferentially stretched. - FIG. 7 is a perspective view showing the pants of FIG. 5 as viewed in a section taken along line C-C in FIG. 5 and FIG. 8 is a sectional view taken along line D-D in FIG. 5. The
inner sheets opposed sides 9 a face inwardly of thepants 1 in contact with each other. The front andrear side portions inner sheets pants 1 in contact with the front and rear side edges 3 c, 3 d of the adjacentouter sheets - In the
pants 1 assembled, the opposed surfaces of theinner sheets bottom sides 9 b to therespective bond lines 11 expand outward transversely of thepants 1 aselastic members 13 contract, resulting in formation of a pocket P opening upwardly of thepants 1. - The
inner sheets panels panels inner sheets panels panels - The surfaces of the
inner sheets upper ends 2 a not bonded to each other and therefore it is not apprehended that the regions of thesheets upper ends 2 a might give the wearer a feeling of stiffness even when these regions are pressed against the wearer's skin under a contractile force of theelastic members 8. - In these embodiments of the
pants 1 illustrated by FIGS. 1 and 5, respectively, thesheets opposed sides 9 a free over an extent sufficient to alleviate a stiffness of the bonded regions even when these innermost edges come in contact with the wearer's crotch. In this way, stimulation possibly experienced by the wearer's skin can be effectively alleviated. - The surfaces of the
inner sheet 2A and the adjacentouter sheet 3A as well as the surfaces of theinner sheet 2B and the adjacentouter sheet 3B are bonded to one another leaving outermost edges of their front andrear sides - An alternative embodiment is also possible such that both the
front side portions rear side portions outer sheets upper ends lower ends - The
inner sheets outer sheets side sheets inner sheets - It is also possible to use composite nonwoven fabric (SMS nonwoven fabric) comprising high water-resistance melt blown nonwoven fabric having opposite sheet surfaces each laminated with sheet surface of spun bond nonwoven fabric having a high strength and a high flexibility. The SMS nonwoven fabric is obtained by sandwiching the melt blown nonwoven fabric between two layers of spun bond nonwoven fabric and then bonding these melt blown nonwoven fabric and spun bond nonwoven fabric together using a technique of press working. Use of the SMS nonwoven fabric advantageously results in the
pants 1 having a high strength, a high water-resistance and a comfortable touch. - The
outer sheets elastic members 8 associated with the waist-opening provided along the upper ends 3 a of thesheets - The
elastic members elastic members - It is also possible to attach the
elastic members 8 associated with the waist-opening to the respective outer surfaces of theouter sheets pants 1 assembled, it is possible to cover the exposed regions of theelastic members 8 attached to the opposed surfaces of thesheets elastic members 8 from coming in contact with the wearer's skin. - The liquid-
absorbent panel panels elastic members sheets
Claims (5)
1. Trunks-type disposable pants having a waist-opening at its top and a pair of leg-openings at its bottom wherein said waist-opening is provided along its peripheral edge having an elastic stretchability circumferentially of said waist-opening,
said trunks-type disposable pants further comprising
said pants including a pair of inner sheets confronting each other and a pair of outer sheets lying outside respective said inner sheets, said inner sheets as well as said outer sheets being contoured by upper and lower ends transversely extending in parallel to each other, respectively, and front and rear side portions longitudinally extending in parallel to each other, respectively;
said inner sheets being formed between their front and rear side portions with cutouts depressed from said upper ends toward said lower ends and provided with mat-like liquid-absorbent panels attached to opposed surfaces of said inner sheets so that said opposed surfaces of said inner sheets are bonded together by means of bond lines extending in parallel to said cutouts and partially extending below said liquid-absorbent panels; and
opposed surfaces of said inner sheets and said outer sheets being bonded together along said front and rear side portions of these sheets.
2. The pants according to , wherein the opposed surfaces of said inner sheets are bonded together along the upper ends of said inner sheets and along limited regions of said front and rear side portions lying in the vicinity of said upper ends of said inner sheets, at least along said limited regions of said front and rear side portions lying in the vicinity of said upper ends of said inner sheets.
claim 1
3. The pants according to , wherein elastically stretchable members are bonded with tension to said inner sheets along respective said bottom sides of said cutouts so as to extend above respective said liquid-absorbent panels transversely of said inner sheets.
claim 1
4. The pants according to , wherein liquid-resistant side sheets are bonded to said inner sheets along respective said bottom sides of said cutouts so as to extend above respective said liquid-absorbent panels transversely of said inner sheets, said side sheets being made of nonwoven fabric and having fixed ends transversely extending and fixed to said inner sheets, free ends extending above said fixed ends across said cutouts and transversely opposite fixed sides fixed to said inner sheets along said cutouts so as to extend longitudinally of said side sheets, said free ends being provided with elastically stretchable members bonded with tension thereto so as to extend transversely of said side sheets.
claim 1
5. The pants according to , wherein said inner sheets and/or said outer sheets are made of nonwoven fabric.
claim 1
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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JP2000-46767 | 2000-02-18 | ||
JP2000046767A JP3717362B2 (en) | 2000-02-18 | 2000-02-18 | Trunks-type disposable pants |
JP12-046767 | 2000-02-18 |
Publications (2)
Publication Number | Publication Date |
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US20010016722A1 true US20010016722A1 (en) | 2001-08-23 |
US6293937B2 US6293937B2 (en) | 2001-09-25 |
Family
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Application Number | Title | Priority Date | Filing Date |
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US09/785,638 Expired - Fee Related US6293937B2 (en) | 2000-02-18 | 2001-02-16 | Trunks-type disposable pants |
Country Status (10)
Country | Link |
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US (1) | US6293937B2 (en) |
EP (1) | EP1125571A3 (en) |
JP (1) | JP3717362B2 (en) |
KR (1) | KR20010082740A (en) |
CN (1) | CN1312063A (en) |
AU (1) | AU2303401A (en) |
BR (1) | BR0100721A (en) |
CA (1) | CA2336723A1 (en) |
ID (1) | ID29554A (en) |
SG (1) | SG85230A1 (en) |
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US20080262457A1 (en) * | 2004-03-29 | 2008-10-23 | Donald Carroll Roe | Disposable Absorbent Articles With Zones Comprising Elastomeric Components |
CN101999963A (en) * | 2010-11-24 | 2011-04-06 | 杭州珂瑞特机械制造有限公司 | Shorts type external infant thin cotton training pants |
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US20170165130A1 (en) * | 2015-12-15 | 2017-06-15 | The Procter & Gamble Plaza | Belted structure with tackifier-free adhesive |
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US20030023224A1 (en) * | 2001-07-30 | 2003-01-30 | Hiroki Ishikawa | Pants-type disposable diaper |
US20050131380A1 (en) * | 2002-05-22 | 2005-06-16 | Uni-Charm Corporation | Panty type diaper (brief-type diaper) |
US20080262457A1 (en) * | 2004-03-29 | 2008-10-23 | Donald Carroll Roe | Disposable Absorbent Articles With Zones Comprising Elastomeric Components |
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CN101999962A (en) * | 2010-11-24 | 2011-04-06 | 杭州珂瑞特机械制造有限公司 | Short-type outer thin cotton diaper for baby |
US20150223524A1 (en) * | 2012-09-21 | 2015-08-13 | Evb Sports Shorts Limited | Undergarment |
US20170099881A1 (en) * | 2015-10-13 | 2017-04-13 | Ronald N. Travisano | Mens underwear brief |
US20170165130A1 (en) * | 2015-12-15 | 2017-06-15 | The Procter & Gamble Plaza | Belted structure with tackifier-free adhesive |
Also Published As
Publication number | Publication date |
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KR20010082740A (en) | 2001-08-30 |
EP1125571A2 (en) | 2001-08-22 |
AU2303401A (en) | 2001-08-23 |
JP3717362B2 (en) | 2005-11-16 |
EP1125571A3 (en) | 2001-11-28 |
CA2336723A1 (en) | 2001-08-18 |
BR0100721A (en) | 2001-10-09 |
JP2001224615A (en) | 2001-08-21 |
ID29554A (en) | 2001-09-06 |
US6293937B2 (en) | 2001-09-25 |
SG85230A1 (en) | 2001-12-19 |
CN1312063A (en) | 2001-09-12 |
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