A textile manufacturer ordered eight walk-in ovens that will be used to preheat spinnerets so polymers will not stick as they are extruded through the tool. The heavy metal spinnerets weigh about 40 lb and are heated to 600°F before use. Drawers were added to the ovens to allow tools to be easily removed when needed and placed back in the oven when they cool.
Horizontal recirculating airflow ensures uniform temperatures throughout the ovens, which will be manufactured by Minneapolis, Minn.-based Despatch. A high-volume fan circulates air through perforated, aluminized steel walls to create a constant horizontal airflow across all sections of the oven. Multiple temperature operations are controlled by up to eight programs, with eight ramp and soak segments in each program.