Sleeve-enclosed hydrophilic foam tampon with improved after-use withdrawal characteristics
AssigneeKimberly-Clark Corporation
InventorsDonald M. Fries, David F. Ring
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AssigneeKimberly-Clark Corporation
InventorsDonald M. Fries, David F. Ring
Estimating the term…
A catamenial tampon having as the absorbent element a resiliently compressible hydrophilic foam member, including foam-fiber composites, enclosed in an elongate, closed-end sleeve of fluid-permeable sheet material, assembled in a manner to improve withdrawal characteristics after use. The foam member is made up of an oblong rectangular strip of resiliently compressible hydrophilic polyurethane foam curled or rolled up along its length into a shape which proximates that of a hollow right cylinder in which the ends of the curled up foam strip forming the cylinder are in contact or overlap but are free of attachment to each other. The approximate cylindrical shape of the foam member is maintained by confinement inside one end of a loosely-fitting sleeve. The long axis of the sleeve coincides with the axis of the foam cylinder and the sleeve length is substantially greater than the length of the cylinder. The opposite unoccupied end of the sleeve is gathered and secured together to provide a tapered withdrawal end to which a withdrawal string is attached.
A catamenial tampon comprised of a resiliently compressible absorbent element enclosed in a sleeve of fluid-permeable material, said element being comprised of an oblong strip of hydrophilic foam curled up in the form of a hollow right cylinder with the ends of said strip juxtaposed and with said ends being free of attachment to each other or to said sleeve, said sleeve being elongate and closed at both ends with said closed end sleeve having a length dimension substantially greater than the length of said cylinder and an inner diameter at least equal to the uncompressed outer diameter of said cylinder, the ratio of said closed sleeve length to said cylinder length being in the range of from 1.5 to about 3 to 1;
Dependencies are inferred from the claim text.