Linear Stretch-Blow Unit Targets Smaller Volumes

Sidel, Norcross, Ga., has unveiled its first linear-design stretch-blow molding machine, the SBO 4 Compact, for production of up to 7000 bottles/hr.

Sidel, Norcross, Ga., has unveiled its first linear-design stretch-blow molding machine, the SBO 4 Compact, for production of up to 7000 bottles/hr. The machine is designed to meet demand for lower-volume production in price-sensitive water and carbonated soft-drink applications. The SBO 4 has a positive under-neck transfer adapted from Sidel’s rotary line. This linear version reduces the number of interfaces for greater reliability and eliminates any handling of the preform to ensure high quality. Key functions are designed as individual, accessible modules to facilitate maintenance. For instance, the blowing unit is located at the front of the machine for easy flexibility, and quick-change “universal shell molds” provide easy changeover. The machine can be transported by container and set in position with a forklift. A rigid frame houses all of the machine’s modules, and all sub-assemblies are factory preset, including the orienting rollers. Assembly is said to be easy, and no wiring is required. The four-cavity unit produces about 1600 bottles/cavity/hr for containers up to 3 liters. Machine efficiency is pegged at 95% and the scrap rate at less than 0.2%. In the future, Sidel expects to roll out smaller two-cavity versions.