Back to results
US 9,163,205 B2Granted
Process for making films from nonwoven webs
AssigneeThe Procter & Gamble Company
InventorsMark Robert Sivik, Frank William Denome, Gregory Charles Gordon, Paul Dennis Trokhan, Andreas Josef Dreher, Alyssandrea Hope Hamad-Ebrahimpour, John Gerhad Michael
Life of this patent
Estimating the term…
Abstract
A process for making a film from a nonwoven web by converting the nonwoven web into a film and films and unit dose products made therefrom are provided.
Claims32
A process for making a non-porous film from a nonwoven web, the process comprising the steps of:
- a. providing a filament-forming composition comprising one or more filament-forming materials and one or more active agents;
- b. spinning the filament-forming composition into a plurality of inter-entangled filaments comprising the one or more filament-forming materials and the one or more active agents that are releasable from the filament when exposed to conditions of intended use, wherein the total level of the one or more filament-forming materials present in the filament is 50% or less by weight on a dry filament basis and the total level of the one or more active agents present in the filament is 50% or greater by weight on a dry filament basis;
- c. collecting the plurality of the inter-entangled filaments on a collection device to form a nonwoven web comprising the inter-entangled filaments;
- and
- d. converting the nonwoven web into a non-porous film.
2 more elements
Dependencies are inferred from the claim text.