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Science of Medical Fabrics
What's Unique About Spunlaced Technology?

Inside every DuPont™ Sontara® Softesse® Technologies fabric, short lengths of fiber (called staple) form a strong, three-dimensional sheet structure. Often described as a spunlaced material, it is a nonwoven, textile sheet fabric. Unlike traditional fabrics, its fibers are not spun into yarns, not woven or knitted.

And unlike many other nonwoven materials, Sontara® Softesse® Technologies fabrics use no binders, surface modifiers or adhesives to hold the fibers together, minimizing the possibility of product contamination or user allergic reactions. This makes possible structures of very high purity—an important advantage in numerous applications, particularly medical, critical environments, engineered wiping, and many consumer product applications.



The technology of Sontara® Softesse® turns fibers into fabric by hydroentangling—shooting thousands of high-pressure (up to 2000psi), needle-like jets of water at a random batting of blended fibers. The jets entangle the fibers into a fabric, which is then dried and wound into a fabric roll. Fibers may be entangled to form a strong yet soft sheet structure with either a repeating pattern (called aperture) or no pattern.. Virtually any combination of fibers can be entangled, including polyester, rayon, acrylic, nylon, woodpulp and cotton—providing almost limitless control of performance characteristics. The technology of Sontara® Softesse® can produce spunlaced fabric ranging from absorbent to repellent—with stability or conformability in all directions. This technology creates products for both disposable and durable goods applications.

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