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Thick Film Heaters

Conduction Heaters

Nozzle Heaters

Thick Film Heaters on Stainless Steel

Thick Film Heaters on Ceramics

Thick Film In-line Heaters on Quartz

Thick Film Heaters on Quartz

Watlow's Thick Film heating technology provides an innovative new way to deliver heat to various applications that require a compact heating solution. Greater control of your heating applications can now be achieved with this breakthrough technology that offers a high-performance, low-profile design that can be intimately fitted to flat and cylindrical surfaces.

The direct surface contact of the Thick Film heater allows the heat to be put precisely where it's needed. Thick Film also provides superior heat transfer and fast thermal response. Glass-based films provide a non-porous surface that prevents moisture absorption.

Thick Film resistance heaters are constructed of several layers of material. These materials consist of a substrate, a base dielectric material, a resistor, and a final dielectric layer.

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Conduction Heaters

Watlow's 14 gauge, 430 series stainless steel thick film Conduction Heaters are ideal for use in many applications where fast response and uniformity are essential. These high-performance heaters use thick film technology to provide maximum temperature response in a compact package.

Thick film Conduction Heaters provide a low-profile heater in a variety of shapes. These shapes include two-dimensional circular, rectangular and square forms. Due to the direct surface contact, thick film heaters ensure greater heat transfer through thermally stable substrates and precision heater pattern.

This new technology can be applied in areas where space is at a premium or where conventional heaters cannot be used because of limited voltage and wattage combinations.

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Nozzle Heaters

Watlow's innovative thick film heating technology provides the injection molding industry with a patented high-performance, low-profile hot runner Nozzle Heaters. The direct surface contact of the thick film material to the cylindrical stainless steel sleeve creates optimal heat transfer while the non-porous glass-based film prevents moisture absorption resulting in dielectric failure in other heaters.

The hot runner nozzle is the final melt path between the manifold and the gate area, temperature uniformity is critical to avoid differences in melt viscosity. Whether it's hot spots causing thermal degradation of the plastic, or cold spots causing flow restrictions, both affect the final part quality and consistency from shot to shot.

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Thick Film Heaters on Stainless Steel

Thick Film Heaters on Stainless Steel

Watlow's new thick film heaters on 300 and 400 series stainless steel are ideal for use in many applications where fast response and uniformity are essential. This high-performance heater uses thick film technology to provide maximum temperature response in a compact package.

Thick Film Heathers on Stainless Steel provides a low-profile heater that has the ability to be laser cut or machined to fit any CAD-generated, two-dimensional shape. Due to the direct surface contact, these thick film heaters ensure greater heat transfer through thermally stable and in expensive substrates.

The heaters can be applied in areas where space is at a premium or where conventional heaters cannot be used because the voltage and wattage combination precludes using other types of resistive heaters. Because of the unique nature of thick film circuit, this heater can be designed to vary heat output across the entire surface. This feature will correct virtually any temperature uniformity problem that current designs may be generating.

Watlow's Thick Film Heaters on Stainless Steel are manufactured to meet the requirements of NEC (National Electrical Code) codes. UL® (Underwriter's Laboratories, Inc.), and CSA (Canadian Standards Association) certifications are pending. Contact factory for current status of agency approval.

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Thick Film Heaters on Ceramics

Thick Film Heaters on Ceramics

Thick Film Heaters on Ceramics offers thermal stability and fast response

Watlow's new thick film heaters are now available using an assortment of ceramic materials as the base substrate. This high performance heater uses thick film technology to provide maximum temperature response in a compact package. Ceramics provide low thermal expansion, a high temperature tolerance, a lower dielectric constant, rigidity and dimensional stability; making it a preferred substrate for many applications.

Thick Film Heaters on Ceramics substrates provides a low-profile heater that can be special ordered to fit any CAD-generated, two-dimensional shapes. Due to the direct surface contact, these thick film heaters ensure greater heat transfer through the thermally stable Ceramic Substrates. Below, includes a description of each ceramic substrate available for thick film applications.

Ceramic Substrates are mainly composed of powdered metal oxides or nitrides combined with glass or frit particles. The mix of these materials is varied to generate a range of physical properties. The mixture is shaped into its desired form by either tape casting, powder pressing, roll compacting, or extrusion, and then sintered in to form a hard crystalline structure.

Thick Film Heaters on Ceramics can be applied in areas where space is at a premium or where conventional heaters cannot be used due to the voltage and wattage combination preventing the usage of other types of resistive heaters. Because of the unique nature of thick film circuit, this heater can be designed to vary heat output across the entire surface. This feature will correct virtually any temperature uniformity problems a current design is generating.

Watlow's Thick Film Heaters on Ceramics are manufactured to meet the requirements of NEC (National Electrical Code) codes. UL® (Underwriter's Laboratories, Inc.), and CSA (Canadian Standards Association) certifications are pending. Contact factory for current status of agency approval.

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Ceramic Substrates:

Alumina (A²O³)

Alumina is the most widely used substrate material due to availability, relatively low cost and stable physical properties. This ceramic material is easy to fabricate into a range of shapes while remaining strong at high temperatures and is available in a variety of purity levels.

Aluminum Nitride (AlN)

This material has high thermal conductivity making it an excellent choice where fast response or high levels of uniformity are required. Aluminum nitride is costly to fabricate due to high temperature atmosphere required for firing requirements and material costs.

Beryllium Oxide (BeO)

This material has the highest thermal conductivity available and has excellent dielectric strength needed for some applications. Beryllium oxide is available only in small sizes and safety can be a concern when dealing with toxic beryllium oxide powder.

Silicon Carbide (SiC)

This ceramic is also highly conductive and offers an alternative to aluminum nitride and beryllium oxide. Caution must be used when selecting silicon carbide substrates as dielectric strength can vary as temperature increases.

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Thick Film In-line Heaters on Quartz

Thick Film In-line Heaters on Quartz

Thick Film In-line Heaters on Quartz provide long life and efficient heat transfer

Watlow's new, ultra pure in-line thick film on quartz heaters are ideal for use in aggressive chemical applications. This high watt density heater uses thick film technology to provide maximum temperature response and heat output in a compact package.

Watlow's Thick Film In-line Heaters on Quartz delivers an ultra clean heating solution. This unique quartz resistive heater module design eliminates process contamination risk in the event of element failure. With the thick film method, heating elements are fused directly to the exterior surface of the quartz tubes. This provides efficient transfer of heat energy with rapid response to changes in flow and temperature.

Life testing has demonstrated significantly longer life than with infrared or other types of conductive heating technologies. The combination of high watt density and compact size makes Watlow's in-line thick film on quartz heaters perfect for continuous and intermittent flow aggressive chemical applications.

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Thick Film Heaters on Quartz

Thick Film Heaters on Quartz

Thick Film Heaters on Quartz offers high thermal density and corrosion resistance

Watlow's new Thick Film Heaters on Quartz glass are ideal for use in many applications where visibility and corrosion resistance are required. This high performance heater uses thick film technology to provide maximum temperature response, and temperature uniformity in a compact package. Thick Film Heaters on Quartz substrates provides a low-profile heater that can be cut or blow molded to fit a variety of shapes and sizes. Since quartz is an efficient radiator of heat, Thick Film Heaters on Quartz can be utilized as effective radiant heaters.

Thick Film Heaters on Quartz can be applied in areas where space is at a premium or where conventional heaters cannot be used because the voltage and wattage combination precludes using other types of resistive heaters. Due to the unique nature of a thick film circuit, these heaters can be designed to vary heat output across the entire surface. This feature will correct virtually any temperature uniformity problem that a current design is generating while still allowing the ability to view the process.

Watlow's Thick Film Heaters on Quartz are manufactured to meet the requirements of NEC (National Electrical Code) codes. UL® (Underwriter's Laboratories, Inc.), and CSA (Canadian Standards Association) certifications are pending. Contact factory for current status of agency approval.

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