Apertured Webs Having Permanent Hydrophilicity And Absorbent Articles Using Such Webs. (Patent Review).Apertured Webs Having Permanent Hydrophilicity And Absorbent Articles Using Such Webs: No. 6,461,716; Yann-Per Lee, Hugh O'Donnell, Andrew Wnuk, Todd Mansfield, Gary LaVon and Fernando Benvegnu, assignors to Procter & Gamble, Cincinnati, OH. Filed 6/24/ 99. Issued 10/8/02. An apertured formed film web with a first and second surface that is suitable for use as a topsheet of an absorbent article has been patented. The web consists of a first and second layer with both layers comprising a hydrophilic hydrophilic /hy·dro·phil·ic/ (-fil´ik) readily absorbing moisture; hygroscopic; having strongly polar groups that readily interact with water. hy·dro·phil·ic adj. block copolymer copolymer: see polymer. of a polyether pol·y·e·ther n. A polymer in which the repeating unit contains two carbon atoms linked by an oxygen atom. and another polymer selected from a group consisting of polyester, polyamide polyamide material used in the creation of nonabsorbable, synthetic, nylon sutures. and polyurethane. The other first and second layers comprise a polymeric hydrophobic hydrophobic /hy·dro·pho·bic/ (-fo´bik) 1. pertaining to hydrophobia (rabies). 2. not readily absorbing water, or being adversely affected by water. 3. layer and form a film web containing a plurality of microand macro-apertures having the hydrophilic block copolymers on inside surfaces of the apertures and the apertures form a plurality of fluid passage ways placing the first and second surfaces in fluid communication with one another. |
|
||||||||||||||||||||||
Printer friendly
Cite/link
Email
Feedback
Reader Opinion