New DuPont additive promises enhanced performance of oriented polypropylene and polyester

DuPont Packaging & Industrial Polymers announced that it is introducing DuPont™ Entira™ Strong, a polymeric additive that helps improve the performance and processibility of tapes, filaments, and films made out of oriented polypropylene and polyester. The addition of Entira Strong, even at loading levels as low as 2 to 3% by weight, delivers a multitude of performance-enhancing features ranging from increased hot drawability and tenacity to reduced dusting and splitting.

Studies have shown that dry blending 2-3% by weight of Entira Strong with a base resin enables the stretch ratio to be increased 20-30% above standard levels, with no reduction in elongation at break. The higher molecular orientation will lead to a tenacity increase and enable manufacturers of geotextiles, flexible bulk containers, and multifilaments to consider down-gauging as a means to achieving cost savings without compromising product performance.

“Entira Strong also reduces dusting, which minimizes blocking and wear on equipment, and helps create a better work environment. And, by reducing splitting, Entira Strong helps increase productivity because there are fewer breaks during weaving and strapping operations.

Additional advantages of using Entira Strong include: improved softness and smoothness for geotextiles and flexible bulk containers, which makes sewing easier and reduces wear from abrasion; and increased filler acceptance, which helps reduce costs by allowing the use of higher levels of low-cost fillers.

Source: DuPont Packaging & Industrial Polymers