Disposable worn article and method for producing same

Patent metadata

Field	Value
Publication number	US-10058459-B2
Application number	US-201514877385-A
Country	US
Kind code	B2
Filing date	Oct 7, 2015
Priority date	Aug 5, 2010
Publication date	Aug 28, 2018
Grant date	Aug 28, 2018

Abstract

The present invention relates to a disposable worn article, including: an absorbent body 2 including an absorbent core 24 which absorbs body fluid laminated between a liquid-permeable top sheet 26 and a liquid-impermeable back sheet 27 ; a pair of front flaps Ff extending in a girth direction X to be continuous with a front portion 20 of the absorbent body 2 that covers a front surface of a torso of a wearer; and a pair of back flaps Fb extending in the girth direction to be continuous with a back portion 21 of the absorbent body 2 that covers a back surface of the torso of the wearer, wherein: the front and back flaps Ff and Fb include a stretchable non-woven fabric 31 that stretches in the girth direction X; and an entire area of the absorbent core 24 is not essentially covered by the stretchable non-woven fabric 31.

First claim

The invention claimed is:

1. A method for manufacturing a disposable worn article, the worn article including:
an absorbent body including an absorbent core absorbing body fluid, the absorbent core laminated between a liquid-permeable top sheet and a liquid-impermeable back sheet;
a pair of front flaps extending in a girth direction to be continuous with a front portion of the absorbent body that is adapted to cover a front surface of a torso of a wearer; and
a pair of back flaps extending in the girth direction to be continuous with a back portion of the absorbent body that is adapted to cover a back surface of the torso of the wearer, wherein:
the front flaps and the back flaps each include at least one stretchable non-woven fabric that stretches in the girth direction; and
an entire area of the absorbent core is not covered by the stretchable non-woven fabric,
the method comprising the steps of:
carrying a non-stretchable continuous non-woven fabric for a girth area, from which the pair of front flaps and the pair of back flaps are formed, in a longitudinal direction, the non-stretchable continuous non-woven fabric being continuous in the longitudinal direction;
laminating stretchable non-continuous non-woven fabrics, from which the pair of front flaps and the pair of back flaps are formed, on the continuous non-woven fabric for the girth area while being elongated in the longitudinal direction so that the stretchable non-continuous non-woven fabrics are arranged intermittently in the longitudinal direction of the continuous non-woven fabric for the girth area;
cutting off the continuous non-woven fabric for the girth area, together with the stretchable non-continuous non-woven fabrics, along a virtual cut-off line extending in the longitudinal direction, after the lamination, thereby obtaining first and second laminate non-woven fabrics;
successively providing absorbent bodies so as to span between a first portion of the first laminate non-woven fabric where the stretchable non-woven fabric is absent and a second portion of the second laminate non-woven fabric where the stretchable non-woven fabric is absent, while transferring the first and second laminate non-woven fabrics in parallel to each other and in the longitudinal direction; and
cutting the first and second laminate non-woven fabrics along a virtual cut-off line extending in a width direction perpendicular to the longitudinal direction in areas of the first and second laminate non-woven fabrics between the absorbent bodies, so as to produce individual worn articles.

2. The manufacturing method according to claim 1 , wherein the step of cutting the first and second laminate non-woven fabrics is carried out by cutting the first and second laminate non-woven fabrics together with the stretchable non-continuous non-woven fabrics along the virtual cut-off line extending in the width direction in the areas of the first and second laminate non-woven fabrics between the absorbent bodies.

3. The manufacturing method according to claim 2 , each of the stretchable non-continuous non-woven fabrics is cut into four pieces by the two steps: (i) the step of cutting off the continuous non-woven fabric for the girth area cutting, along the longitudinal direction, each of the stretchable non-continuous non-woven fabrics into two pieces; and (ii) the step of cutting the first and second laminate non-woven fabrics cutting, along the width direction, each of the two pieces into two pieces.

Assignees

• Umebayashi Toyoshi
• Zuiko Corp

Inventors

• Umebayashi Toyoshi

Classifications

• A61F13/493

  adjustable {by adding or removing material, e.g. umbilical cord arrangements (adjustable by the fastening A61F13/5638, A61F13/5655)} · CPC title

• A61F13/49014 Primary

  the elastic means is located at the side panels · CPC title

• A61F13/15723 Primary

  Partitioning batts; Cutting · CPC title

• A61F13/15699

  Forming webs by bringing together several webs, e.g. by laminating or folding several webs, with or without additional treatment of the webs · CPC title

• A61F13/15756

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