ARE SAFE AND EFFECTIVE
Our device’s Elvax® 150w and Total HIPS 4440 polymers provide a safe and effective product.
Our oral device is made of two polymers, Elvax® 150w and Total HIPS 4440, used for a variety of purposes for decades. Since developing the first synthetic fiber--nylon--from research on large molecules called polymers, DuPont has remained a leader the field. In addition to Elvax®, DuPont makes high impact polystyrene (HIPS), which is also produced by other manufacturers.
Manufactured by DuPont, Elvax® is a copolymer of ethylene and vinyl acetate (EVA). It is flexible, resilient, tough, and resistant to ozone or environmental stress cracking. Elvax® can be used alone or as an additive to improve other resins or elastomers. With no plasticizer to migrate and minimal odor, Elvax® has advantages over other natural or synthetic rubbers. Its flexibility spans a broad temperature range, and Elvax® recovers rapidly under repeated instantaneous load.
As a blending resin, Elvax® improves flexibility, resilience and toughness, easily compounding with polyethylene, polypropylene, ABS, thermoplastic, nitrile, natural and compounded rubbers, and elastomers. DuPont notes the “broad compatibility of Elvax® resins with other resins.”
U.S. Food and Drug Administration (FDA) regulations allow using Elvax® in contact with food. As a non-biodegradable, non-inflammatory sustained-release polymer, Elvax® has been used as a sustained-release delivery medium for drugs in human implants. Elvax® resins have also been used safely in the local delivery of substances through sustained-release human dental implants. TOTAL HIPS 4440:
Polystyrene is a resin produced by polymerizing styrol, a thermoplastic resin used in dentures. It is one of the most widely used plastics, whose use is said to reach billions of kilograms a year. High-impact polystyrene (Total HIPS...