초록 ▼

The present invention pertains, in a particularly preferred embodiment, to an apertured, macroscopically expanded, resilient three-dimensional polymeric web which is believed to have particular utility as a breatheable barrier for a disposable bandage such as a diaper. The web preferably comprises a

The present invention pertains, in a particularly preferred embodiment, to an apertured, macroscopically expanded, resilient three-dimensional polymeric web which is believed to have particular utility as a breatheable barrier for a disposable bandage such as a diaper. The web preferably comprises a deeply drawn three-dimensional structure containing a multiplicity of debossments of macroscopic (i.e., visibly perceivable by the normal human eye at a perpendicular distance of about one foot) cross-section, each of said debossments originating as an aperture in a first surface of the web and having a continuously interconnected side wall extending in the direction of a second, remotely located parallel surface of the web. The side wall of each debossment terminates to form an end wall in the second surface of the web. The end wall includes a multiplicity of apertures, each of said apertures being sized and shaped to independently support an aqueous fluid meniscus. The smaller apertures in each end wall are so spaced relative to all adjacent apertures in the end wall that the aqueous fluid menisci supported in the apertures do not contact one another or the side wall. In a disposable absorbent bandage context, the second surface of the web containing the end walls with small apertures therein is placed in contact with the absorbent core portion of the bandage and the surface of the web in which the debossments originate is oriented so as to contact the wearer\s outer garments in use.

대표청구항 ▼

A macroscopically expanded, resilient three-dimensional polymeric web having first and second surfaces located in substantially parallel planes which are remote from one another, said web including a multiplicity of debossments of macroscopic cross-section, each of said macroscopic cross-section deb

A macroscopically expanded, resilient three-dimensional polymeric web having first and second surfaces located in substantially parallel planes which are remote from one another, said web including a multiplicity of debossments of macroscopic cross-section, each of said macroscopic cross-section debossments originating as an aperture in said first surface of said web and having a continuously interconnected side wall extending in the direction of said second surface of said web, said continuously interconnected side wall terminating to form an end wall located in said second surface of said web, said end wall including a multiplicity of apertures in said second surface of said web, said apertures in said second surface of said web being smaller in size than the corresponding macroscopic aperture in said first surface of said web, said web exhibiting sufficient resistance to compression that said first and said second surfaces of said web do not become coplanar with one another when said web is subjected to a compressive loading of about one pound per square inch, and a degree of resilience sufficient to return substantially to its undeformed condition when said compressive load is removed from said web.