PAWTUCKET, R.I.—Testing by a pair of suppliers to the medical device industry has "demonstrated a strong, chemical-resistant bond between thermoplastic elastomers (TPEs) and a clear copolyester substrate known for its toughness and chemical resistance," they said.
Eastman Chemical Co. and Teknor Apex Co. conducted the 90-degree peel testing that showed three Medalist brand medical grade TPEs from Teknor Apex provided bonds to four Eastman Chemical's Tritan brand copolymers.
"Specifically formulated to adhere to copolyester and other engineering thermoplastics, the Medalist compounds exhibited high levels of peel strength. The peel tests that showed high peel strengths with adhesive failures demonstrate excellent Tritan TPE over-molding performance. The combination of high peel strength and adhesive failure is considered desirable for over-molded applications," the companies said.