Main features

Flat and flexible silicone rubber heaters are made of fiberglass reinforced laminated silicone rubber sheets, vulcanized together through heat and high pressure on both sides of an embedded specially formed heating wire element. Fiberglass-reinforced silicone rubber gives the heater dimensional stability without sacrificing flexibility.

Silicone is used because of its high temperature resistance (Permanent temperature up to 200°C (390°F), high thermal conductivity (~7 10^-4 W/cm.K) and good electrical insulation properties (~12KV/mm)

This series is distinguished by the use of a conventional thermostat mounted on the surface of the heating part, in a compact and economical design.

Other general particularities of these heaters are:

– Not affected by vibration or flexing,

– Lightweight,

– Comply with UL94-VO (flame retardant) and ROHS,
– Low smoke and low Toxicity,

– Silicone is non-toxic, and moisture and chemical resistant

-Very thin profile

Main applications

Combining high surface power and flexibility, flexible silicone heating elements are a simple and economical solution for heating surfaces. They are light, thin, heat quickly and evenly because they are in direct contact with the surface to be heated. Their construction is rugged, and they do not change dimensions during heating. They can be mounted on flat or cylindrical surfaces. Their bonding to the surfaces can be made by vulcanization, room temperature vulcanizable resin (RTV), or by application of a pressure-sensitive adhesive (PSA).

Some typical examples of applications are:

Autoclaves, Surveillance cameras, Mold heaters for polymerization of resins, Poultry incubators, Diesel fuel filters,

Defrost, Cash Machines, Laboratory Equipment, Gyroscopes, Laminators, Heated Mirrors, Animal Feeders, Photocopiers, Food heating Trays, Heat Presses, Battery Heaters, Tanks for liquids, etc.

They can be made in multiple shapes, receive cutouts or holes. They can receive temperature sensors, temperature limiters, thermal fuses and thermostats.

Technical Features

Mounting:  By a pressing system on the surface made by the user or by bonding with a room temperature vulcanizing silicone resin (RTV), or by adhesive.

Length (Dimension A): Upon customer request

Width (dimension B): Upon customer request (minimum 100mm)

Silicone foil minimum bending radius: 3.2 mm (0.125″)

Ingress protection: IP65.

Minimum ambient temperature: -10^o C (+15^o F)

Voltage:  220-240VAC.

Power tolerance: ±10% at 20°C

Temperature control:

Single pole bulb and capillary thermostat, adjustable from 20°C to 110°C (+50~230°F) or from 50 to 200°C (120-390°F). Rating 16A 230V.

Power density:

– 0.2 w/cm² (1.3W/in²) for plastic materials

– 0.75 w/cm² (4.8 w/inch²), for usual applications.

– 1 w/cm² (6.5 w/inch²) for fast heating applications

Other values on request.

Thickness of the flexible silicone foil:

-1.6mm for light application and small surfaces

– 2.5mm for usual industrial applications

– 3.2mm, for heavy duty applications requiring strong mechanical strength and reinforced insulation.

Quality control routine tests: Each element is 100% tested for continuity, resistance and insulation. Tests are made according to EN 60335-1 and EN 50106 standards. See technical introduction.

Dielectric Strength: 1750V AC.

Insulation resistance: ≥ 10 Megohms.

Operating temperature:

See in the technical introduction examples of the temperatures reached by flexible silicone heaters. They represent the temperature that may reach the heating belt if it is not correctly installed.

Connection cable:

Insulated rubber power supply cable, for industrial environments, 3 x 1.5mm² (3xAWG15) length 3m, Euro plug. UL plug on request.

Options:

– Customer design shape, with or without holes

– Power supply 110/115V

– Power cord with industrial plug 2-pole + earth 16A CEE (IEC60309).

– Surface mounted temperature limiter.

– Surface mounted temperature sensor (Pt100, NTC, thermocouple)

– Grounded mesh wire shield layer

– Silicone foam insulation layer vulcanized on the external surface

Safety standards:

The heaters have been designed in compliance with EEC Low Voltage Directive (LVD) 2006/95/EC and EMC directive 2004/108/EC. They must be installed in accordance with all local applicable instructions, codes, and regulations.

Main parts numbers in 220/240V, with 0.75W/cm² (4.8 w/inch²), surface power*

NB: the characters “-” in the part numbers are updated after selection of the length and the width of the silicone rubber heater

* – For surface load 0.2 w/cm² (1.3W/in²), replace 8G with 2G or 8L with 2L in the reference.

– For surface load 1 w/cm² (6.5 w/in²), replace 8G with BG or 8L with BL in the reference.

** For UL plug instead of Euro plug, replace F3 with E3 in the part number.

*** For knob printed in °F instead of °C, replace G with F or L with K in the reference.