Sipa has worked on components optimization for preform feeding, preform handling, and machine kinetics and today production rates of 2,000 bph per cavity are guaranteed with the same machine reliability once guaranteed for 1,800 bph per cavity.
Blowing circuit configuration, blowing monobloc valves, and up-to-date electronic controls allow the consistent and reliable blowing process control even at such high production rates.

The patented oven configuration with the most effective ventilation and with the feature of inversion-stabilization time regulation allows the heating of any preform design, from multilayer to hot fill high IV resin preforms, to very high stretch ratios (up to 15, 16 total stretch ratio), or special containers with no axial stretch ratio whatsoever. There is never the need of going up to high oven temperatures as it is for conventional blow molders. This is a great advantage for a wider process window and for lighter and thinner neck finishes.
Thanks to the patented “crocodile” mold opening, the diameters of machine and transfer wheels are much smaller then conventional blow molders with up to 45% slower peripheral speeds. This is a great advantage in preform-bottle handling at 1,800 bph per cavity and up, especially for handling of thin neck finishes.

All process steps were conceived to reduce energy consumption and running costs.
Oven process temperatures are by far the lowest in the category (up to 40% lower then conventional machines) with two important advantages:
a) less process sensitivity to ambient temperature variations (wider process window)
b) fastest re-start times from either cold oven or stand-by with very low oven stand-by temperature (normally in the range of 50°C).
Low stand-by and running oven temperatures mean fast start time (higher machine and line utilization) and reduced energy consumption.
The Closed loop pneumatic circuit for stretching rods brings the service air consumption for stretching close to zero.
The Patented ARS Blowing Air Recovery System incorporates a large air reservoir and allows the unique ability to recover over 50% of precious blowing air.

The simplified machine structure and kinematics, along with the patented innovations (oven ventilation, oven chain, mold opening) are the keys for low maintenance costs over the years. In particular, the low oven temperatures and the innovative ventilation system reduce the frequency of lamps, mirrors and spindles change. The lightweight chain made of simple injected technopolymer does not encounter the typical issues of chain elongation and heavy wear and tear. The reduced wheels diameters and peripheral speeds, eliminates the need of classic transfer wheel alignment and shimming (no shimming on Sipa blow molders).Finally, the “crocodile” mold opening and patented compensation system, eliminates the need of shock absorbers.