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US 6,719,743 B1Granted
Sanitary tampon
AssigneeUni-Charm Corporation
InventorMitsuhiro Wada
Life of this patent
Estimating the term…
Abstract
There is disclosed a sanitary tampon including an absorber including: an absorbent layer made of an absorbent fibrous material; and a hydrophobic liquid-permeable layer covering the absorbent layer. The absorber is formed firstly into a flat shape and then into a column shape. The absorbent layer forming the flat absorber is formed with a plurality of small recesses which open in the surface of the absorbent layer and extend into the absorbent layer.
Claims7
A sanitary tampon comprising:
- a single layer absorber folded into a plurality of layers and compressed into a column shape over its entirety while maintaining a layered structure, said single layer absorber including an absorbent layer made of an absorbent fibrous material and a hydrophobic liquid-permeable layer covering both surfaces of the absorbent layer, the absorbent layer having a plurality of small open recesses in both surfaces of the absorbent layer and extending toward an inner area of the absorbent layer,
- wherein prior to compression, the small open recesses have an opening diameter of 0.5 to 1.0 mm and a depth 1 to 5 mm, and are distributed in a density of 1 to 10 recesses/cm2.
A sanitary tampon comprising:
- a single layer absorber folded into a plurality of layers and compressed into a column shape over its entirety while maintaining a layered structure, said single layer absorber including an absorbent layer made of an absorbent fibrous material and a hydrophobic liquid-permeable layer covering both surfaces of the absorbent layer, the absorbent layer having a plurality of small open recesses in both surfaces of the absorbent layer and extending toward an inner area of the absorbent layer,
- wherein the small open recesses are formed by embossing the absorbent layer prior to compression so that a fiber density of the absorbent layer is increased in a vicinity of the small open recesses.
Dependencies are inferred from the claim text.