Thermal Nozzle Heaters for Injection Moulding

Thermal nozzle elements have been designed to last and reduce down time. These elements have high watt density capabilities which allow maximum temperature ratings and faster heat penetration into the nozzle.

These elements are 6.35mm diameter stainless steel tubular roll formed, making them robust and eliminating the problems that normally occur with conventional mica nozzles.

Operating temperatures of up to 600°C are achieved with outstanding reliability and long lasting life. With the multi-form construction, this heater can be opened and fitted easily without causing possible damage that may normally occur with mica elements.

A Thermal Low Profile Nozzle heater is also available with all of the above capabilities, these elements are 4mm diameter stainless steel tubular roll formed. They are used in applications where there is limited space around the nozzle. The LP type is available with the same dimensions and wattages as the TS and SN type nozzle heaters.

All Thermal nozzle heaters come with 1 metre double glass insulated leads and 300mm tinned copper braid as standard. Many other options are available.

Thermalfold Cartridge Elements

Thermalfold high watt density cartridge elements are of a unique design.

These elements are manufactured 0.1mm to 0.5mm undersize and slide easily into the hole size specified. When energised, they heat up and spring open due to their folded construction. While in the heated condition, they are a snug fit and impossible to remove. On cooling, they contract back to their original diameter and become easy to remove again. Conventional cartridge heaters would normally fail under these conditions.

The maximum element temperature is 800°C. Work temperatures of up to 600°C are therefore achievable, depending on the application.

These elements range in size from 6mm to 25mm diameter, with various lengths on request.

Thermalfold heaters are specially manufactured to suit your requirements. When ordering please specify the following dimensions:

• Heating Length
• Total length of Thermalfold
• Length of terminating leads with or without metal flexible conduit
• Hole size in which Thermalfold is to fit
• Voltage and wattage

Thermal Band Heaters

Thermal Band Heaters have been designed to last and reduce down time. These elements have high watt density capabilities which allow maximum temperature ratings and faster heat penetration into the barrel.

These elements are manufactured with 6.35mm and 7.9mm diameter stainless steel tubular roll formed construction, making them robust and eliminating the problems that normally occur with conventional mica band heaters.

Operating temperatures of up to 600°C are achieved with outstanding reliability and long lasting life. With the multi-form design, these heaters can be opened and fitted easily without causing damage to them that may normally occur with mica elements. A larger uniform heating area around the barrel is made possible due to this construction whereas a mica band heater for applications with thermocouple holes and cut outs may, in many cases, heat only half of the area that the element has been designed for.

Thermal Band Heaters come standard with 2 metre double glass insulated leads, fitted with either tinned copper braiding or stainless steel flexible conduit for protection against mechanical damage. If desired, a plugall assembly or terminal enclosure can also be fitted. The two designs available are BH type and DBH type.

Thermocouples

Various styles of thermocouples for the smelting, heat treatment and furnace manufacturing industries are available through Thermal Electric. Styles include straight or angles, with single, duplex or triplex elements and numerous cold leg materials and terminal heads. Protective sheath materials include Sialon, Silicon Carbide, Laminated Ceramic, Plumbago, Chrome Iron, Cast Iron, Inconel 600 and 601, 253MA, 316-310 S.S., Pythagoras GR61-, Alsint AL23, Mullite, Sillimantin.

We can also provide a full range of Lance dip probes, incorporating the MARSHALL type K and N replaceable 8 inch long life chrome iron tips. Applications: specifically designed for non-ferrous metals, aluminium, copper, brass, bronze or salt baths at temperatures to 1300°C.

Various styles of thermocouples and sensors are manufactured for the petrochemical industries. The sensors shown are a small example of what we can supply. Assemblies available with single and duplex elements in numerous OD sizes, insulated or bonded thermocouple junctions, element sheath materials, spring loading for terminal blocks and barrel unions. Also available are thermowells - fabricated or machined barstock, screwed or flanged, in various materials, specialty coatings for thermowells, weld on pads, ceramic sheaths, barrel unions - nipples - and a large range of mounting hardware, terminal head materials: alloy, cast iron, S.S., plastic, bakelite and SAA approved explosion flame proof "Exd".

Ceramic Heaters

Thermal ceramic infrared heaters provide a reliable, economical and highly effective source of infrared heat. Because of their versatility, they can be easily adapted to solve many manufacturing problems.

In the plastics industry, banks of ceramic heaters are used in thermoforming products.
The specially designed yellow ceramic heaters are very useful in this process, as they will turn white when heated. If one ceramic heater has failed it will remain yellow, making it much easier to identify which heater is not working and needs to be replaced.

Download our Ceramics brochure.