Sanitary napkin with improved comfort
AssigneeKimberly-Clark Corporation
InventorsBillie J. Matthews, John P. Allison, Paul S. Woon, Robert A. Stevens, Stephan R. Bornslaeger
Life of this patent
Estimating the term…
Abstract
A sanitary napkin is provided which is capable of transmitting viscous menstrual fluid into the absorbent portion of the napkin without cover runoff. The napkin has a fluid permeable cover which is integrated with a portion of the absorbent matrix. This portion of the absorbent matrix is also designed to provide increased comfort, initially during use, and after the napkin has become wet.
Claims19
A sanitary napkin with a perineal area generally corresponding to and positioned beneath the perineal area of the wearer in use comprising:
- (a) a fluid permeable cover with a body contacting surface;
- (b) an absorbent matrix system including a principal absorbent portion and a transfer portion including thermoplastic material;
- (c) said transfer portion positioned between said cover and said principal absorbent portion and in fluid conductive contact between said cover and said principal absorbent portion and integrated at spaced apart sites with said cover, at least in the perineal area, to produce zones of greater density and enhanced fluid conduction relative to the remainder of said transfer portion;
- said zones corresponding to a transfer area on said cover, said transfer area being not less than 0.12% of said napkin perineal area;
- and
- (d) a fluid impermeable baffle adjacent said absorbent matrix system having a garment facing surface and an absorbent-matrix-system-facing-surface.
A sanitary napkin characterized by relatively improved comfort as measured by reduced wet compressibility with a perineal area generally corresponding to the perineal area of the wearer in use comprising:
- (a) a fluid permeable cover with a body contacting surface;
- (b) an absorbent matrix system including a principal absorbent portion and a transfer portion including thermoplastic material;
- (c) said transfer portion positioned between said cover and said principal absorbent portion and in fluid conductive contact between said cover and said principal absorbent portion and integrated at spaced apart sites with said cover, at least in the perineal area, to produce zones of greater density and enhanced fluid conduction relative to the remainder of said transfer portion;
- said zones corresponding to a transfer area on said cover;
- (d) a fluid impermeable baffle adjacent said absorbent matrix system having a garment facing surface and an absorbent-matrix-system-facing-surface;
- and
- (e) said wet compressibility being defined as an F.sub.max at 60% compression of not greater than 7000 gms when said wet compressibility is measured for said matrix system based upon a principal absorbent layer of wood pulp fluff having a basis weight of 580 gm/m.sup.2.
A sanitary napkin having relatively increased resistance to permanent distortion with a perineal area generally corresponding to and positioned beneath the perineal area of the wearer in use comprising:
- (a) a fluid permeable cover with a body contacting surface;
- (b) an absorbent matrix system including a principal absorbent portion and a transfer portion including thermoplastic material;
- (c) said transfer portion positioned between said cover and said principal absorbent portion and in fluid conductive contact between said cover and said principal absorbent portion and integrated at spaced apart sites with said cover, at least in the perineal area, to produce zones of greater density and enhanced fluid conduction relative to the remainder of said transfer portion;
- said zones corresponding to a transfer area on said cover;
- (d) a fluid impermeable baffle adjacent said absorbent matrix system having a garment facing surface and an absorbent-matrix-system-facing-surface;
- and
- (e) said increased resistance to permanent distortion being measured when the principal absorbent layer is wood pulp fluff having a basis weight of 580 gm/m.sup.2 and when the ratio F.sub.eq /F.sub.1 is at least 1/10 at 50% compression.
Dependencies are inferred from the claim text.