Inside, the ovens have thermostatically controlled heaters. These ovens consist of an outer and inner shell separated by a space containing fiber or rockwood insulation. Users should undertake sufficient verification and testing to determine the suitability for their own particular purpose.įorced circulating-air ovens heat uniformly at consistent temperatures and are commercially available. The following is offered as a resource for thermoforming equipment and procedures. These heat sources derive average life spans ranging from 1,500 to 20,000 hours at varied efficiency levels. The Plastics Distributor and Fabricator - Your Industry MagazineĪcrylic sheet can be thermoformed using several types of equipment such as vacuum, pressure, or stretching equipment, and a variety of heating methods including coiled nichrome wire, metal (cal) rod, hot air ovens, ceramic elements, and quartz tube (nichrome filament and tungsten filament).