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US 6,238,380 B1Granted
Disposable diaper
AssigneeUni-Charm Corporation
InventorToru Sasaki
Life of this patent
Estimating the term…
Abstract
In a disposable diaper, a topsheet covering a top surface of a liquid-absorbent core is folded along side edges of the core so as to cover a bottom surface of the core. On the bottom surface of the core, the topsheet is bonded to a backsheet along zones respectively spaced from side edges of the core towards a center line of the diaper. Elastic members provided in association with leg-openings are secured to the backsheet in vicinity of the respective side edges of the core.
Claims4
A disposable diaper comprising:
- liquid-pervious topsheet:
- a liquid-impervious backsheet;
- and
- a liquid-absorbent core disposed between said topsheet and said backsheet,
- said liquid-pervious topsheet, liquid-impervious backsheet and liquid-absorbent core defining a front waist region, a rear waist region and a crotch region extending between said front waist region and said rear waist region,
- said disposable diaper further comprising elastic members longitudinally extending along transversely opposite side edges of said diaper from said crotch region into said front and rear waist regions,
- said liquid-absorbent core extending across said crotch region into said front and rear waist regions and having a top surface for facing a wearer, a bottom surface opposed to said top surface, longitudinally opposite ends and transversely opposite side edges,
- said liquid-pervious topsheet covering said top surface of said liquid-absorbent core and being folded along said opposed side edges of said liquid-absorbent core and extending onto said bottom surface of said liquid-absorbent core so as to cover said bottom surface at least partially,
- said liquid-impervious backsheet underlying portions of said liquid-pervious topsheet which are folded onto said bottom surface of said liquid-absorbent core and extending outwards beyond said opposite side edges of said liquid-absorbent core,
- said portions of said liquid-pervious topsheet which are folded onto said bottom surface of said liquid-absorbent core being bonded to said liquid-impervious backsheet along zones which extend inside said opposite side edges of said liquid-absorbent core, parallel to a center line which divides a width of the diaper in two halves, and
- said elastic members being bonded to said liquid-impervious backsheet in proximity to said opposite side edges of said liquid-absorbent core.
8 more elements
Dependencies are inferred from the claim text.