Patent Number: 7,045,029

Title: Structured material and method of producing the same

Abstract: A method for producing a structured material for accommodating passage of fluids, particularly high viscosity fluids, through the structured material. In one embodiment, the structured material is a composite material formed of a first layer, for example a polypropylene polymer, having a first shrinkage extent and a second layer bonded to the first layer, for example an ethylene-propylene copolymer, having a second shrinkage extent different from the first shrinkage extent. In another embodiment, a structured heterogenous material is made of a heterogeneous mixture of at least two homogeneous fiber sets or components having different shrinkage extents.

Inventors: DeLucia; Mary Lucille (Roswell, GA), Tan; Sandy Chi-Ching (Roswell, GA), Varona; Eugenio Go (Marietta, GA), King; Jessica B. (Roswell, GA)

Assignee: Kimberly-Clark Worldwide, Inc.

International Classification: B32B 37/00 (20060101)

Expiration Date: 5/16/02018