ARTICLES AND METHODS USING SHAPE-MEMORY POLYMERS

摘要

Articles comprise: a nonwoven fiber web and one or more strips bonded to the nonwoven fiber web. The strips comprise a shape-memory polymer that has a strained temporary shape and an intrinsic shape. If heated at or above a transition temperature, the strip at least partially converts from the strained temporary shape to the intrinsic shape, thereby causing at least one of folding, cupping, or puckering of the nonwoven fiber web. Methods of heating the articles to provide folded, cupped, and/or puckered articles are also disclosed.