WEB EXCLUSIVE: Eastman Chemical Co.,Kingsport, Tenn., recently added a new medical grade to its Tritan copolyester line. Eastman already offers two Tritan grades for injection molding, but its newest, Tritan MP100, is a medical extrusion grade for sheet and thermoforming. It is aimed at rigid medical packaging. It does not contain mold release.
Compared with Eastman’s Eastar 6763 PETG copolyester, Tritan offers higher heat resistance, which allows for higher sterilization chamber temperatures for faster ethylene oxide (EtO) cycle times and reduced risk of warping and sticking. Higher heat resistance also increases package shelf life, according to Eastman, and permits faster accelerated-aging tests. Tritan also reportedly returns to glass-like clarity and its original color after gamma sterilization. Extrusion and forming properties are said to be similar to those of PETG.
Eastman also reports that it has discovered a new advantage of Tritan: that it is highly suitable for cold swaging, or joining by bending and crimping a platic part without heat to join two parts without adhesives, solvents, or mechanical fasteners.
(888) 321-1021 • eastman.com/tritan
Eastman Chemical Company
P.O. Box 431 Kingsport, TN 37662
Phone (423) 229-2278 Fax (423) 246-1316