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With over 57 years of combined experience, NPH has become a leading supplier of electric heaters, temperature sensors, and temperature controls for plastics processing equipment . Our extensive knowledge has helped us design products that offer you higher productivity and minimize your downtime. In fact, our components are found on OEM equipment for injection molding and extrusion operations around the world.
The plastics industry is vast, covering many areas of industry from  transport, aerospace, electronics and transportation. Injection mold machines use nozzle heaters to help soften the polymers into final products. The use of thermocouples and precise digital controllers are also used to maintain target temperatures for each application. Some manufacturers use cartridge heaters that are inserted into steel or aluminum molds that heat up large surface areas. Aluminum or steel are excellent alloys as they distribute heat at a much quicker rate than other materials. They are also fairly inexpensive and can have holes pierced to hold thermocouples (type J or K) that would maintain the operating temperature that is required. Bag forming machines often use cartridge heaters to help seal plastic bags and require precise heating so as not to melt the thin layers of plastic.
We design, engineer and distribute industrial grade process electric heaters, along with  mica band heaters, ceramic band or knuckle heaters, cast aluminum /bronze heaters, cartridge/ pencil, coil, and platen heaters. We manufacture thermocouples and RTD's. In addition we offer process temperature control panels that feature the cutting edge of available technology for most Plastic Industry  applications.

Extrusion Blow Molding:

NPH sales staff and  engineers are extremely experienced and versatille with the extrusion blow molded process and  supply and distribute the required heaters, sensors and temperature control solutions that provide long life for a wide variety of blow molding and blown film applications.
            Extrusion Blow Molded Process-Cross Sections                                  Final Extrusion Blow Molded  Bottles
Plastics Extrusion Process:
NPH offers  custom heater, sensor and control solutions that provide fast thermal response, consistent temperature accuracy with long life for a wide variety of Plastics extrusion applications.
Plastics Extrusion Machine

Injection Molding & Hot Runner Systems:

National Plastic Heater, designs, engineers and supplies heater, sensor and control solutions for injection molding applications including barrel and sprue bushing heating, hopper heating, manifold heating and hot runner systems.
 Plastics Injection Molding Machines Can Vary From 40 Ton Units to Large 4000 plus Tonnages


NPH offers robust radiant (ceramic infrared or tubular ) heaters, temperature sensors and control solutions for the most demanding thermoforming applications such vacuum forming, pressure assist forming, drape and press forming.
  Thermoforming Process Showing The Heating, Forming, Cutting, Stacking and Packing Stations
Thermoforming Plant Using Ceramic Infrared Heaters/Tubular Heaters



UL World Globe CSA US
We Ship Our Kapton & Process Heaters To OEM’s & Industry World Wide

Inquiries & Technical Support

Telephone: 905-859-8225 Facsimile: 905-859-4691

[email protected]

Toll Free: 1-877-674-9744