Patent ID: 7005395

Claim:
A stretchable multi-layer composite sheet comprising: a first polymeric layer comprising at least 20 weight percent of spirally-crimped multiple-component fibers, the multiple-component fibers having a cross-section and a length, and comprising a first polymeric component and a second polymeric component arranged in substantially distinct laterally eccentric zones across the cross-section of the multiple-component filaments and extending substantially continuously along the length of the multiple-component filaments; a second polymeric layer comprising less than 20 weight percent of laterally eccentric spirally-crimped multiple-component fibers and intermittently bonded to the first layer; the spirally-crimped multiple-component fibers in the first layer forming spirally-crimped fiber segments positioned substantially in the plane of the first layer and connecting the bonds; and the second layer forming buckled out-of-plane segments between the bonds; wherein the bonds are spaced between about 2 to 6 per centimeter with about 3.9 to 35 bonds/cm 2 measured when the multi-layer composite sheet is in a substantially tensionless state.