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US 7,727,214 B2Granted
Disposable diaper with spaced elastic leg openings for improved appearance
AssigneeDaio Paper Corporation
InventorsKeiji Torigoshi, Yosuke Mori
Life of this patent
Estimating the term…
Abstract
A disposable diaper having a neat appearance. The diaper 101 includes: a liquid-permeable top sheet 111 which covers a use surface side; a leakage preventing sheet 112 which covers a non-use surface side; an absorbent body 113 interposed between the top sheet and the leakage preventing sheet; and an external sheet 120 disposed on an outer surface side of the leakage preventing sheet, wherein three-dimensional gathers BS are formed along leg surrounding portions, and leg cut-out portions of the external sheet which form leg openings are located in a portion of the minimum width of a crotch portion, at a position nearer to a central side than places outward by 5 mm from rising start points of the three-dimensional gathers BS.
Claims26
A disposable diaper comprising:
- a liquid-permeable top sheet at a skin contact side of the disposable diaper;
- a leakage preventing sheet at a non-skin contact side of the disposable diaper;
- an absorbent body interposed between the liquid-permeable top sheet and the leakage preventing sheet;
- an external sheet which:
- (i) is disposed on an external side of the leakage preventing sheet, so as to be on an external side of the disposable diaper with respect to the leakage preventing sheet, so as to enclose a waist of a user while supporting a main body of the disposable diaper by holding the main body to the user when the user puts on the disposable diaper, and (ii) includes leg cut-out portions which form leg openings and which are provided at a center thereof in a longitudinal direction thereof;
- three-dimensional gathers formed along leg-surrounding portions of the disposable diaper;
- and
- elastic members which are arranged along a longitudinal direction of the disposable diaper near both sides of the absorbent body, and which are provided on a leakage preventing sheet side of the absorbent body, wherein an elastic member on each of the sides of the absorbent body is positioned directly between the absorbent body and the leakage preventing sheet;
- wherein the sides of the absorbent body are raised along the longitudinal direction of the disposable diaper by the elastic members to form rising start points of the three-dimensional gathers at the sides of the absorbent body;
- wherein a width of the external sheet at the leg cut-out portions at a minimum width of a crotch portion does not extend outward from side edges of the main body;
- wherein the external sheet is integrally bonded to the leakage preventing sheet by adhesion, and is not bonded in a non-bonded portion at a side edge of the external sheet along the leg cut-out portions at the crotch portion;
- wherein a width of the non-bonded portion is not more than 15 mm;
- and
- wherein the width of the external sheet at the leg cut-out portions at the minimum width of the crotch portion does not extend outward from side edges of the absorbent body.
11 more elements
A disposable diaper comprising:
- a liquid-permeable top sheet at a skin contact side of the disposable diaper;
- a leakage preventing sheet at a non-skin contact side of the disposable diaper;
- an absorbent body interposed between the liquid-permeable top sheet and the leakage preventing sheet;
- an external sheet which:
- (i) is disposed on an external side of the leakage preventing sheet, so as to be on an external side of the disposable diaper with respect to the leakage preventing sheet, so as to enclose a waist of a user while supporting a main body of the disposable diaper by holding the main body to the user when the user puts on the disposable diaper, and (ii) includes leg cut-out portions which form leg openings and which are provided at a center thereof in a longitudinal direction thereof;
- three-dimensional gathers formed along leg-surrounding portions of the disposable diaper;
- and
- elastic members which are arranged along a longitudinal direction of the disposable diaper near both sides of the absorbent body, and which are provided on a leakage preventing sheet side of the absorbent body, wherein an elastic member on each of the sides of the absorbent body is positioned directly between the absorbent body and the leakage preventing sheet;
- wherein the sides of the absorbent body are raised along the longitudinal direction of the disposable diaper by the elastic members to form rising start points of the three-dimensional gathers at the sides of the absorbent body;
- wherein a width of the external sheet at the leg cut-out portions at a minimum width of a crotch portion does not extend outward from side edges of the main body;
- wherein the external sheet is integrally bonded to the leakage preventing sheet by adhesion, and is not bonded in a non-bonded portion at a side edge of the external sheet along the leg cut-out portions at the crotch portion;
- wherein a width of the non-bonded portion is not more than 15 mm;
- wherein a sheet forming the three-dimensional gathers wraps side edges of the absorbent body and extends to a back side of the absorbent body to be fixed to the main body at the back side of the absorbent body to form the rising start points of the three-dimensional gathers;
- and
- wherein the width of the external sheet at the leg cut-out portions at the minimum width of the crotch portion does not extend outward from the rising start points of the three-dimensional gathers.
12 more elements
Dependencies are inferred from the claim text.