Disposable worn article in pants form with cut-outs and method for manufacturing same

Patent metadata

Field	Value
Publication number	US-9132041-B2
Application number	US-201113696353-A
Country	US
Kind code	B2
Filing date	Jun 27, 2011
Priority date	Jul 23, 2010
Publication date	Sep 15, 2015
Grant date	Sep 15, 2015

Abstract

Front and back flaps 3 F and 3 B are protruding past a crotch portion 22 to a same position in the girth direction X; a back member 4 b is attached to the back flap 3 B, the back member 4 b protruding in the girth direction X from an edge of the back flap 3 B; a front member 4 f protruding in the girth direction X from an edge of the front flap 3 F is detachably touch-fastened to a non-skin-contact surface of the front flap 3 F which does not contact a skin of the wearer; the crotch portion 22 is folded along a virtual first line L 1 parallel to the girth direction X so that a front girth portion 3 F and a back girth portion 3 B are laid on each other and so that the back member 4 b and the front member 4 f are facing each other and in contact with each other; and the back member 4 b and the front member 4 f facing each other are secured to each other in an area where the back member 4 b and the front member 4 f are in contact with each other.

First claim

The invention claimed is:

1. A disposable worn article produced in a pants form, including:
a front girth portion extending in a girth direction and adapted to cover a front portion of a torso of a wearer,
a back girth portion extending in the girth direction and adapted to cover a back portion of the torso of the wearer, and
a crotch portion being continuous with the front girth portion and the back girth portion, extending in a lengthwise direction perpendicular to the girth direction, and adapted to cover a crotch of the wearer, wherein:
the front girth portion includes a pair of front flaps protruding past the crotch portion in the girth direction,
the back girth portion includes a pair of back flaps protruding past the crotch portion in the girth direction,
a fastening member is secured to each of the pair of back flaps,
by attaching and detaching the fastening member to and from each of the front flaps, it is possible to finely adjust a fit in the girth direction after the worn article is worn and to see if the worn article is dirty after the worn article is worn, and
the front and back flaps protrude past the crotch portion to a same position in the girth direction;
the worn article further including:
a back member of the fastening member attached to each of the back flaps, the back member including a protruding portion protruding in the girth direction from an edge of each of the back flaps in the girth direction;
a front member of the fastening member including a protruding porting protruding in the girth direction from an edge of each of the front flaps in the girth direction being detachably touch-fastened to a non-skin-contact surface of each of the front flaps which is contactless to a skin of the wearer;
the crotch portion folded along a virtual first line parallel to the girth direction so that the front girth portion and the back girth portion are laid on each other and so that the protruding portions of the back member and the front member are facing each other and in contact with each other;
the protruding portions of the back member and the front member facing each other being secured to each other;
wherein, subsequent to manufacture and prior to use of the worn article, the edges in the girth direction of the front and back flaps are not directly secured to each other but rather are attached to each other only via the respective front and back members that are secured to each other; and
wherein:
each of the front and back flaps includes a cut-out receding in the girth direction from the edge of each of the flaps in the girth direction;
in the cut-out of each of the back flaps, the back member protrudes in the girth direction from the edge of each of the back flaps;
in the cut-out of each of the front flaps, the front member protrudes in the girth direction from the edge of each of the front flaps; and
the protruding portions of the front member and the back member, which are protruding in each of the cut-outs, are secured to each other.

2. A worn article according to claim 1 , wherein each of the cut-outs is formed at a center apart from upper and lower ends of the corresponding flap in the lengthwise direction, whereby each of the front and back flaps is hollowed at the edge thereof.

3. A worn article according to claim 2 , wherein the protruding portions of the back member and the front member are secured to each other by being welded to each other.

4. A worn article according to claim 3 , wherein the back member is secured to each of the back flaps, and the front member includes a male touch fastener detachably touch-fastened to each of the front flaps.

5. A worn article according to claim 4 , wherein:
a line of the edge of each of the front flaps and a line of the edge of each of the back flaps are aligned with each other in the girth direction; and
a line defining an end of the front member in the girth direction and a line defining an end of the back member in the girth direction are aligned with each other.

6. A method for manufacturing a disposable worn article according to claim 1 , the method comprising:
a carrying step of carrying one or two webs to be the front and back flaps in a plurality of worn articles;
a placement step of placing absorbent main bodies, each of which forms a part or whole of the crotch portion, one after another on the web, thereby forming a continuous laminate;
a boring step of forming back holes in portions of the web which are to be the back flaps adjacent to each other;
a boring step of forming front holes in portions of the web which are to be the front flaps adjacent to each other;
an attachment step of placing first members on the web so that each of the first members extends over each of the back holes in the girth direction and each of the first members is to provide two of the back members, and attaching opposite end portions of each of the first members to the web in a vicinity of each of the back holes;
a fastening step of placing second members on the web so that each of the second members extends over each of the front holes in the girth direction and each of the second members is to provide two of the front members, and detachably touch-fastening opposite end portions of each of the second members to the web in a vicinity of each of the front holes;
a folding step of folding each of the absorbent main bodies along the first line so that the back holes and the front holes are aligned with each other and so that a portion of each of the first members and a portion of each of the second members are facing each other and in contact with each other through the two holes aligned together;
a securing step of securing together the portion of each of the first members and the portion of each of the second members, which are facing each other and in contact with each other through the two holes aligned together; and
a severing step of cutting the web, the first members and the second members along a line passing through an area of the holes aligned together, thereby severing and producing individual worn articles off the continuous laminate.

7. A method according to claim 6 , wherein in the severing step, the line passing through the area of the holes is a virtual second line extending in the lengthwise direction, and the web, the first members and the second members are cut along the second line.

8. A method according to claim 7 , wherein:
the two webs comprise a first continuous web to be the back flaps and a second continuous web to be the front flaps; and
the absorbent main bodies are placed so as to bridge between the first continuous web and the second continuous web.

9. A method for manufacturing a disposable worn article according to claim 1 , the method comprising:
a carrying step of carrying one or two webs to be the front and back flaps in a plurality of worn articles;
a placement step of placing absorbent main bodies, each of which forms a part or whole of the crotch portion, one after another on the web, thereby forming a continuous laminate;
a folding step of folding the absorbent main bodies along the first line so that the front and back flaps are laid on each other;
a boring step of forming a back hole and a front hole aligned with each other in portions to be each of the front flaps and each of the back flaps laid on each other after the folding step;
an attachment step of placing first members on the web so that each of the first members extends over each of the back holes in the girth direction and each of the first members is to provide two of the back members, and attaching opposite end portions of each of the first members to the web in a vicinity of each of the back holes;
a fastening step of placing second me

Assignees

• Umebayashi Toyoshi
• Zuiko Corp

Inventors

• Umebayashi Toyoshi

Classifications

• A61F13/15 Primary

  Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators · CPC title

• A61F13/15756

  Applying tabs, strips, tapes, loops; Knotting the ends of pads · CPC title

• A61F13/49

  specially adapted to be worn around the waist, e.g. diapers, nappies · CPC title

• A61F13/565

  pants type diaper · CPC title

• A61F13/496 Primary

  in the form of pants or briefs · CPC title