HIDROMIX mixing blade system handles
difficult dental mold compound in comparative lab testing.
The customer's existing mixer configuration consisted of a rectangular gate-style planetary blade and an off-center mounted high-speed dispersion blade, along with a sidewall scraper. This mixing configuration caused the formation of large balls of un-wetted material, which created an unbalanced load for the mixer and caused excessive vibration and stress to the mixer drive. Eventually, the solids wetted out in the formulation, and it became a more uniform-looking heavy paste. However, this process took a long time (over 90 min.), and generated undesirable high product temperature in excess of 230ºF. In addition, the process was very complicated because the customer had to make a total of nine small powder additions at specific time intervals to prevent overloading of the mixer.