Conveying bulk materials like plastic pellets, sugar, or specialty chemicals is highly sensitive to temperature. Conventional rotary lobe blowers operate with high discharge temperatures, which can transfer intense heat directly into your conveying line. This heat can soften or melt plastic pellets—creating "angel hair" or "streamers" that ruin product batches—or cause food ingredients to bake and clump. At the same time, older, inefficient blower packages draw excessive power, inflating your monthly utility bills during continuous-duty runs.
Upgrading to high-efficiency rotary screw blowers stabilizes line temperature, eliminates thermal clumping, and slashes energy consumption by up to 35%.
Kaeser’s rotary screw blowers (such as our CBS and DBS series) feature our energy-saving Sigma Profile rotor design. Because they are significantly more efficient than traditional rotary lobe blowers, they operate at much lower discharge temperatures, protecting heat-sensitive conveyed materials from thermal damage. This customer success story from the Kaeser Report (page 7) details how a manufacturer replaced their conventional lobe blowers with Kaeser screw blowers, achieving rock-solid reliability, eliminating thermal line plugging, and securing dramatic energy savings.