Patent ID: 6127595
Filing Date: 2000-10-03
Classification: A61F

Abstract:
In a disposable absorbent article such as a sanitary napkin, etc. having multi-layer construction comprised of a liquid permeable cover sheet having a wearer contact side and an underside, optionally an air-laid nonwoven distribution or transfer layer, at least one air-laid nonwoven absorbent core and a liquid-impermeable backsheet, the disposable absorbent article constructed such that said absorbent core is disposed between the cover sheet and said backsheet and said distribution layer disposed between the underside of said cover sheet and said absorbent core, the improvement in the disposable absorbent article which resides in an improved bond for providing generally continuous contact between the cover sheet and said distribution layer or said absorbent core and comprised of the following:said liquid-pervious cover sheet having said underside coated with a thermoplastic adhesive binder obtained by emulsion polymerization, said thermoplastic adhesive binder applied via a print roller to its underside and forming a substantially continuous adhesive grid pattern on the underside of said cover sheet;said distribution layer or absorbent core each formed from an air-laid, nonwoven web comprised of randomly distributed fibers or polymeric foam, the distribution layer or absorbent core bonded with a binder obtained by emulsion polymerization, said binder employed in forming distribution layer or absorbent core being adhesively compatible with said binder bonded to the adhesive on said cover sheet; and,said underside of said liquid-pervious cover sheet coated with an adhesive binder and bonded to the surface of the distribution layer or absorbent core.