Wire, Cable, Extrusion, Tubing & Fiber Optic Infrared Systems
Glenro Radround® Quartz Cylindrical Infrared Heaters are the core building blocks of these systems. This medium wave heater completely surrounds the product with infrared energy for excellent heat transfer and minimal losses. The energy not directly absorbed by the small target products is reabsorbed by the quartz radiating face of the heater, helping to maintain operating temperature set points with less energy. For some applications requiring faster heater response, an open element design is available.
System Design Considerations
Wire, Cable & Fiber Optic System Applications
Wire Preheat System
This self-contained system was designed to preheat fine gauge and braided wire prior to fluoropolymer extrusion. The unit was prewired, factory assembled and tested prior to shipment.
Coaxial Cable & Magnetic Wire System
Dual retraction system designs like the one illustrated are used to preheat coaxial cable core insulation prior to overwrapping with foil backed adhesive tape.
Curing resin impregnated fiber insulation on magnetic wire is another application for this particular system design.
Stranded Wire System
This vertical, retractable Radround® system was designed to dry a water based PTFE release agent on bare, stranded wire prior to extrusion.
Tubing & Extruded Product System Applications
PTFE Tubing System
Vertical Radround® systems have been in operation for many years sintering extruded fluoropolymer tubing. The heaters are designed to be mounted end to end to create whatever system length is required to meet your performance criteria.
With any vertical system design, Glenro includes multiple zones of temperature control in the machine direction so that the uncured extruded tubing or other profiles can develop some green strength prior to elevating their temperatures and initiating final cross-linking of the polymers.
Medical & Silicone Tubing System
Vertical short-wave infrared systems like this one are curing extruded silicone and medical tubing. The high-intensity heaters are quick response and create impressive line speeds in relatively short running lengths.
This heater design is split-case, allowing access to its interior for product threading and maintenance. Also shown is the process control system, integrally mounted to the structural steel support frame.
Other System Applications
Narrow Fabric System
This horizontal dual retraction system is designed to B-stage epoxy and phenolic resin coatings on high temperature narrow fabrics; like fiberglass, polyimide, and carbon fiber. On a line stop, the heaters are retracted opened and then retracted off the product pass line in order to protect the product from residual heat damage. In the offline retracted position, the heaters are closed and maintained at operating set point temperatures. On a line start, the retractions reverse, eliminating lost product between stop and go.
Automotive Trim System
This 3-zone horizontal and portable system preheated metal automotive trim and cured a bonding agent on the strip prior to a rubber extrusion. Heated process air and forced exhaust was integrated to facilitate the solvent based drying and curing process. A local operator station is illustrated for connection to a remote main power control panel.
Steel Strip System
Manually opened split-case system design was purchased to dry and cure a solvent based adhesive on narrow steel strip. The system included heated process air,exhaust vestibules and a control system.
Whatever your requirements, Glenro can custom-engineer and manufacture a system for your application. This picture illustrates a conveyorized split-case system designed to heat process a product that required continuous support.