Method For Making An Apertured Web
AssigneeThe Procter & Gamble Company
InventorsFredrick William Gibson, Kelyn Anne Arora, John Lee Hammons, Norman Scott Broyles, Jill Marlene Orr, Timothy Ian Mullane, Jody Lynn Hoying, Karen Denise McAffry, Hugh Joseph O'Donnell
Life of this patent
Estimating the term…
Abstract
A method for making apertures in a precursor web using a forming apparatus is described herein. The precursor web comprises a film layer and a nonwoven layer having molecular orientation and the forming apparatus comprises an arrangement of teeth. The forming apparatus heats and stretches the precursor web forming apertures therein.
Claims25
A method for making apertures in a web, the method comprising,
- providing a laminate or composite precursor web material having a machine direction and a cross machine direction, the web having a predominant molecular orientation relative to the machine direction and the cross machine direction, the laminate or composite precursor web comprising a film layer and a nonwoven layer;
- providing a forming apparatus comprising a first member and a second member, wherein the first member comprises a mating member, and the second member comprises teeth being tapered from a base to a tip, the teeth being joined to the second member at the base, the base of each tooth having a cross-sectional length dimension greater than a cross-sectional width dimension, wherein the first member and/or second member are heated to above room temperature;
- and
- moving the laminate or composite precursor web material through the intermeshing members;
- heating and stretching the laminate or composite precursor web;
- and
- forming apertures in the laminate or composite web as the teeth on the second member engage the mating member.
A method for making apertures in a web, the method comprising:
- a. providing a laminate or composite precursor web material having a machine direction and a cross machine direction, the laminate or composite precursor web having a predominant molecular orientation in the machine direction, the laminate or composite precursor web comprising a film layer and a nonwoven layer;
- b. plastically deforming the laminate or composite precursor web in a direction perpendicular to the machine direction;
- c. providing a forming apparatus;
- and
- d. moving the plastically deformed precursor web material through the forming apparatus, wherein the forming apparatus heats and stretches the web forming apertures therein.
Dependencies are inferred from the claim text.