A - Human Necessities – 61 – L
Patent
A - Human Necessities
61
L
2/117, 2/118, 2/
A61L 15/00 (2006.01) A61F 13/00 (2006.01) A61F 13/15 (2006.01) A61F 13/64 (2006.01) A61F 13/56 (2006.01)
Patent
CA 1064202
ABSORBENT BANDAGE Robert C. Duncan Grace L. Smith ABSTRACT OF THE DISCLOSURE An absorbent bandage or sanitary napkin suitable for use as either a catamenial or an incontinent device adapted to conform more effectively to the shape of the body in the area of the female genitalia whether the wearer is in a standing, sitting or lying position, said napkin being so constructed as to assume an upwardly concave con- formation in both the transverse and the longitudinal directions when worn. The absorbent pad of a preferred embodiment of a sanitary napkin of the present invention is comprised of a basically hydrophobic, non-woven, needle-punched polyester top sheet of relatively low density in contiguous association with one or more absorbent core layers of basically hydro- philic bleached wood pulp fibers airlaid and compressed into a continuous web of relatively high density. The interface thus formed between the top sheet and the absorbent core provides a gradient of diminishing capillary size between the top sheet which has a relatively large pore structure and the absorbent core which has a relatively small pore structure, which gradient promotes rapid transmission of body fluids into the absorbent core material, thereby minimizing lateral spreading of body fluids deposited on the top sheet. This permits more effective utilization of the absorptive capacity of the ab- sorbent core material, and prevents migration of body fluids absorbed by the absorbent core material back through the surface of the topsheet, thereby retaining absorbed body fluids within an envelope formed by the waterproof backing sheet adjacent its lowermost surface and the top sheet which overwraps its uppermost surface and its edge portions.
195593
Duncan Robert C.
Smith Grace L.
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