Textile test machine manufacturer: Zipper Reciprocating Fatigue Test Equipment is used to test zipper in horizontal and vertical forces, can withstand the required number of pulling back and forth. Stop the machine in the test after pulling the zipper pull head to the required number of pull 30rpm constant speed, and then view the zippers damaged cases. Test preparation : Adjustment knob until the tab located at the highest position of the clamping device B, and this means added fixed pad The zipper pull tab secured to the pull-tab clamp B. First zipper trailing end (lower end stop) roughly fixed to the upper clip within the first A point (in this case the first clip and zipper center vertical centerline). The zipper front end (top dead end) fixed to the two longitudinal clip head at point E(E-point clip ...