Eastman TritanTM Medical Toolkit with Dukane’s ISTeP
ISTeP is replacing the I-beam test part that was previously in the Medical Toolkit. ISTeP’s unique design facilitates a number of testing techniques in which medical device manufacturers can evaluate performance of specific resins, joint designs and welding methods for their particular applications. The ISTeP mold is designed for even filling, preventing warping, sink marks, and ensures consistent wall thickness. The mold design also includes an insert to allow molding of numerous varieties of weld joint designs. Three tabs on the top and three on the bottom portion of the part make it easy to place it into a tensile test fixture. When the welded ISTeP comes apart during the tensile testing, the assembly will do so evenly, avoiding the so-called ‘zipper effect’. An integral port in the lower portion of the part makes it easy to insert an air tube for a static pressure test or burst testing. The ISTeP design also allows for measuring part height before and after welding, determining actual collapse distance. Following video demonstrates ultrasonic welding, pull & leak testing of ISTeP.