For the production of many large blow-molded parts, Uniloy Milacron offers parison transfer technology UMC.PT as the most cost-effective and energy efficient process. Virtually indispensable whenever an excellent multi-layer distribution is demanded, the continuous extrusion process with parison transfer technology also represents an excellent alternative to the more traditional accumulator head process for many single layer applications.

The UMC.PT 85-D double station is the latest machine delivered combining this technology with a multi-layer continuous extrusion process: it is designed for multi-layer extrusion of large parisons (3-layer for packaging applications such as drums, up to 6-layer for the production of fuel tanks). The clamp unit is 85 metric tons, but bigger clamps are available – already proven by many years of service in the field on accumulator heads machines: 120 tons as a standard for fuel tanks or IBCs, and 170 tons for the most demanding applications

Unlike most competitors’ models of the same size and for the same applications, the UMC.PT 85-D features stationary clamps units: the parison is captured at the extrusion head and transferred into the mold cavity by a robot with grippers. There is no need to shuttle a huge mass at every cycle (clamp unit + mold can easily weigh over 25 tons), when the same result can be achieved by moving the parison with an efficient all-electric device like a 6-axis robot.

The huge reduction of the masses moved at every cycle is the reason of the small power requirement of the UMC.PT 85-D, resulting in a dramatic energy saving. Another significant benefit is the elimination of wearing due to the clamp unit’s movement. Moreover, with stationary clamps some components are not needed (cables chains, hydraulic hoses chains, etc.), resulting in better machine accessibility, easier maintenance and better cleanliness.