Breathable composite sheet structure and absorbent articles utilizing same

This invention describes a special fabric that lets moisture vapor pass through but blocks liquids, making it breathable yet waterproof. It's a two-layer material: a thin plastic film bonded to a fabric made mostly of synthetic polyolefin fibers. This material is designed to be used as the outer layer of absorbent products like diapers, keeping the skin dry while preventing leaks.

Why it matters: Since 2004, advancements in polymer chemistry and film extrusion have likely made the specific high-performance materials and precise lamination for this breathable sheet more accessible or cost-effective.

Status: Not in forceListed as no longer active. The specific reason is not in the record we hold.
How hard to build: SpecializedPolymer extrusion, non-woven fabric, lamination equipment

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