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Patents

Apertured Polymeric Film Webs and Absorbent Articles Using Such Webs:

U.S. Patent No. 9,744,080

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By: Karen McIntyre

Editor, Nonwovens Industry

Yann-Per Lee, Fairfield, OH; Saeed Fereshtehkhou, Cincinnati, OH; and Keith J. Stone, Fairfield, OH.
Assigned to The Procter & Gamble Company, Cincinnati, OH.

Filed: 8/18/08
Issued: 8/29/17

A method for making an apertured polymeric film-based web having a first side and a second side, said method comprising the steps of: a. providing a first process of vacuum forming, said first process comprising providing a debossing/perforating cylinder comprising a pattern of surface aberrations about its periphery; b. extruding a resinous melt onto the surface of said debossing/perforating cylinder; c. applying vacuum to the first side of the film-based web from within said debossing/perforating cylinder so as to form a polymeric film-based web comprising three dimensional surface structures in the form of apertured surface structures; d. providing a second process that is distinct from said first process, said second process comprising providing a pair of first and second rolls arranged so as to engage each other, at least one of said pair of first and second rolls comprising heated needles or heated pins; and e. forming fluid transport apertures in said polymeric film-based web by applying the heated needles or heated pins of said second process to the first side of the film-based web, wherein said apertured surface structures on the first side are substantially maintained by conducting step (e).

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