Patents

Disposable Wearing Article

May 1, 2007

Patented is a disposable wearing article that comprises a liquid-pervious topsheet facing a wearer’s body. A liquid-impervious backsheet is adapted to face a wearer’s body. A liquid-absorbent panel is interposed between the top- and backsheets and a pair of end flaps extends outside longitudinally opposite ends of the panel. A pair of side flaps extends outside transversely opposite side edges of the panel. The backsheet comprise a breathable but hydrophobic first fibrous nonwoven fabric layer underlying the panel and covering at least an entire under surface of the panel, a breathable but liquid-impervious plastic film underlying the first fibrous nonwoven fabric and covering at least the entire under surface of the panel, and a larger, breathable but hydrophobic second fibrous nonwoven fabric layer underlying the film. In a zone occupied by the panel, the first fibrous nonwoven fabric layer is intermittently joined to the lower surface of the panel by hot melt adhesive and the film is intermittently joined to one of the first fibrous nonwoven fabric layers and the second fibrous nonwoven fabric layer by hot melt adhesive. In the zone occupied by the panel, the article without the topsheet exhibits a vapor-permeability in a thickness direction of 2000–3800 gpsm in 24 hours. The film exhibits a vapor-permeability in a thickness direction of 2150–4000 gpsm in 24 hours. In the zone occupied by the panel, the first fibrous nonwoven fabric layer and the film are coated with an amount of the adhesive in a range of 1–10 gpsm. In the zone occupied by the panel, there is a film between the first and second fibrous nonwoven fabric layers that is intermittently joined only to the first fibrous nonwoven fabric layer. The film is not joined to the second fibrous nonwoven fabric layer.
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