Round heating element

siliconefor medical applicationsfor laboratory applications

Overview
Silicone flexible foil heaters are used across industrial applications including battery heating, electronics and telecommunications, surface and tool heating, climate chambers, industrial kitchens, laboratory and medical equipment, composite curing for aircraft structures and wind turbines, piping systems, snow melting and condensation prevention.

Construction
The heaters are manufactured from resistance wire or etched resistance tracks sandwiched between two silicone layers, then pressed and heat‑treated. Wire‑wound technique is used for low volumes, etched foil for high volumes. Insulation layers can be added to reduce losses and improve control precision.

Mounting and attachments
Foil heaters can be supplied with a self‑adhesive backing for rapid mounting on smooth surfaces. For removable or repositionable use the following attachments are available:

• Hooks
• Buckles
• Eyelets
• Straps
• Snap fasteners
• Velcro straps (max 125°C)
• Magnetic backing (max 80°C)

Temperature control and sensors
Temperature control options include integration of thermocouples and resistive sensors. Heaters can be supplied with sensor pockets for easy mounting, replacement or movement of sensors (e.g. PT100, capillary thermostats).

Technical specifications

• Surface load max. 1.2 W/cm² (recommended up to 0.8 W/cm²)
• Working temperature wire‑wound, non‑adhesive: -60°C to +250°C
• Working temperature etched foil, non‑adhesive: -60°C to +200°C
• Working temperature with self‑adhesive backing: -30°C to +180°C
• Supply according to requirements, including multiple supply and internal Δ- or Y-connection
• Maximum size per unit: 3000 mm x 940 mm (L x W)
• Thickness range: 0.7 mm to 3.0 mm
• Option for electrical double insulation
• Thermal conductivity: 0.22 W/m/K
• Specific heat: 1623 J/kg/K
• Environmental resistance:
  
  • Very good resistance to weathering and ageing
  • Very good resistance to ozone
  • Very good resistance to fungal and bacterial growth
  • Very good resistance to chemicals such as acetone, alcohols, formic acid, brake oil, chlorodiphenyl, acetic acid, lubricants, polar solvents, HCl 10%, H2SO4 10%, waxes, plasticizers, etc.
  • Good resistance to steam up to +130°C or 2.5 bar
  • Different flame‑retardant treatments available