NatureWorks announces the development of a durable hydrophilic formulation that can promote skin health through improved fluid management and increased breathability for absorbent hygiene applications such as diapers, adult incontinence, and feminine hygiene products. In diapers, the combination of custom surface treatments with Ingeo-based nonwoven fabric for the topsheet can reduce the use of super absorbent polymer (SAP) or pulp by up to 30% for thinner, more comfortable, and cost-effective products.

"This innovative technology for Ingeo nonwovens delivers higher performance than polypropylene in fluid management metrics that are key to delivering superior skin health," says Aman Kulshrestha, Ph.D., principal scientist, NatureWorks. "The versatility of the new system gives manufacturers the ability to create new structures and differentiate their products."

Kulshrestha summarizes the benefits of the new durable hydrophilic system for Ingeo nonwovens:

• Surface energy can be tailored via the topical treatments designed specifically for Ingeo nonwovens, enhancing fluid management with improved strike-through, re-wet, and run-off metrics
• Improved permanence / durability reduces the amount of topical treatment needed for nonwovens and reduces wash-off
• In diapers, using this Ingeo nonwovens system for the topsheet can increase the efficacy of the absorbent core, enabling a reduction in SAP or pulp by up to 30%
• Reduced aging maintains fluid management performance and increases shelf life of hygiene products
• Improved breathability due to Ingeo’s higher water vapor transmission rate
• Easy to manufacture via spunbond, meltblown, or staple fiber processes
• Biobased material with lower carbon footprint

With this durable hydrophilic technology, Ingeo nonwovens surpass polypropylene in key measures of fluid management. The passage of fluid through the new Ingeo nonwoven system is faster and more sustained as measured by both strike-through and run-off. These nonwovens resist re-wet two times better than polypropylene, according to NatureWorks. Significantly less surface finish is needed on the fabric compared to polypropylene, which decreases the potential for skin irritation. Durability in the new formulation is also higher compared to polypropylene as less surface finish is washed off and surface tension remains high.