Reversibly necked material

A reversibly necked material adapted to stretch at least about 75 percent and recover at least about 50 percent when stretched about 75 percent wherein said reversibly necked material has been necked by drawing at ambient temperature and then heated and cooled while in a necked configuration so that the material possesses a greater heat of fusion than before being reversibly necked.

A reversibly necked polypropylene web adapted to stretch at least about 75 percent and recover at least about 50 percent when stretched about 75 percent, wherein said reversibly necked polypropylene web has been necked by drawing at ambient temperature and then heated and cooled while in a necked configuration so that the material has a greater heat of fusion than before being reversibly necked.

A reversibly necked polypropylene web adapted to stretch at least about 75 percent and recover at least about 50 percent when stretched about 75 percent, wherein said reversibly necked polypropylene web has been necked by drawing at ambient temperature and then heated and cooled while in a necked configuration so that the material possesses a greater heat of fusion than before being reversibly necked.

A multilayer material including at least one material which is reversibly necked by drawing at ambient temperature and then heating and cooling while in a necked configuration so that the material possess a greater heat of fusion than before reversibly necked.

A multilayer material comprising at least two reversibly necked materials adapted to stretch at least about 75 percent and recover at least about 50 percent when stretched about 75 percent, and wherein said reversibly necked materials have been necked by drawing at ambient temperature and then heated and cooled while in a necked configuration so that the materials posses a greater heat of fusion than before being reversibly necked.

A multilayer material comprising at least two reversibly necked materials adapted to stretch at least about 75 percent and recover at least about 50 percent when stretched about 75 percent, and wherein said reversibly necked materials have been necked by drawing at ambient temperature and then heated and cooled while in a necked configuration so that the materials posses a greater heat of fusion than before being reversibly necked.

A reversibly necked material adapted to stretch at least about 125 percent and recover at least about 50 percent when stretched about 125 percent.

A reversibly necked coherent web formed of fibers joined solely by interfiber bonder, said web being adapted to stretch at least about 75 percent and recover at least about 50 percent when stretched about 75 percent wherein said reversibly necked web has been necked by drawing at ambient temperature and then heated and cooled while in a necked configuration so that the web posses a greater heat of fusion than before being reversibly necked and wherein said fibers are joined solely by interfiber bonding to form a coherent web structure.

A reversibly necked coherent web formed of fibers joined solely by interfiber bonder, said web being adapted to stretch at least about 75 percent and recover at least about 50 percent when stretched about 75 percent wherein said reversibly necked web has been necked by drawing at ambient temperature and then heated and cooled while in a necked configuration so that the web possesses a lower onset of melting than before being reversibly necked and wherein said fibers are joined solely by interfiber bonding to form a coherent web structure.