Breathable elastic polymeric film laminates
AssigneeTredegar Industries, Inc.
InventorJames E. Pelkie
Life of this patent
Estimating the term…
Abstract
An elastomeric breathable three-dimensional composite material and the process for producing the same are disclosed. A carrier material is supplied onto a top surface of continuous portions of an elastomeric film to form the composite material. A pressure differential is applied to a bottom surface of film for a period of time sufficient for three-dimensional apertured structures to be formed in the film.
Claims11
A composite material comprising an elastomeric three-dimensional, apertured film having a planar surface and a three-dimensional surface, the three-dimensional surface having a plurality of three-dimensional protuberances wherein each protuberance defines an aperture, and a carrier material bonded to at least the planar surface of the elastomeric film, wherein the film has elastic hysteresis properties such that the film has about 10% or less tensile set and about 21% or less force relaxation after about a 300% elongation.
Dependencies are inferred from the claim text.