Patent ID: 6395122
Filing Date: 2002-05-28
Classification: A61F,Y10T

Abstract:
A method for manufacturing an apertured web composed of a flexible apertured polymeric web as a first web having upper and lower surfaces, a flexible fibrous sheet as a second web having upper and lower surfaces, said upper surface of said second web being joined to said lower surface of said first web, and a plurality of portions of said first web which raise from said upper surface thereof so as to make said upper surface of said first web rough, said method comprising the steps of:a. continuously feeding said first web in a first direction; b. continuously feeding said second web in said first direction so that the upper surface of said second web is placed against the lower surface of said first web; c. bonding the first and second webs together under a pressure to form a first composite web; d. continuously feeding said first composite web in said first direction so that the upper surface of said first web is subjected to pillar-shaped water jets supplied from at least one nozzle having a plurality of orifices arranged transversely of said first direction until said first web is at least locally torn so that said first web is formed with a plurality of apertures in rows extending in parallel one to another in said first direction and a second composite web is obtained; and e. continuously feeding said second composite web in said first direction so that, the lower surface of said second web is subjected to pillar-shaped water jets supplied from at least one nozzle having a plurality of orifices arranged transversely of said first direction, until peripheral edges of said apertures are partially deformed upward from said lower surface of said first web.