cartridge heaters, metric cartridge heaters, custom electric heaters
cartridge heaters, metric cartridge heaters, custom electric heaters
cartridge heaters, metric cartridge heaters, custom electric heaters

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About us

Since 1995, National Plastic Heater has engineered, produced and distributed high quality electric heaters, temperature sensors and temperature control systems for a diverse group of customers. NPH products are currently a critical component for major manufacturers operating in industries such as plastics, packaging, medical semiconductor processing, foodservice, military technology, automotive and a variety of other technological and industrial process control applications.


Custom cartridge heaters Cartridge Heaters Metric Insertion heaters

National Plastic Heaterís-Cartridge Heaters, Imperial and Metric Insertion Heaters-Manufacturing Partners-Canada & USA


With the development of a set of committed partnerís and patrons, we have been on the threshold of creating exclusive and top quality sources for our products, through joint ventures, manufacturing partnerships and such synergies. National Plastic Heater will thus tie up the product strengths of its supplier partners exclusively for its customers. We are driven by performance rather than size, which enables us to enhance our competitive edge.


Our design and manufacturing capabilities are diverse and flexible to satisfy our customers' requirements. NPH products range from standard off-the-shelf designs to complex thermal systems. Our combined engineering experience supports our customers with product solutions from concept through production. State of the art design software allows our staff to provide dynamic visual enhancements of prototype designs prior to manufacturing.


Due to the increasing demand for NPH products and services, one of our partners manufacturing facility in Cary, Illinois has been expanded to 120,000 square feet, which includes additional capacity for research and development of new products for tomorrowís applications. A diverse mix of manufacturing operations support 14 separate product lines including in-house element manufacturing, foundry operations, heat treating, CNC bending, CNC machining, plasma and electron beam welding, and clean room assembly.


Our quality assurance capabilities mirror our commitment to total customer satisfaction. These capabilities include a full service calibration lab, in-house x-ray facility, helium leak test, coordinate measuring machine, temperature profiling acquisition and display, and on-going life cycle testing.


Whether you require a unique thermal component designed for a tough application or a more common part designed to meet the competitive demands of your industry, National Plastic Heater is ready to be your business partner. Let us prove our commitment to you and your success.







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slit sheath cartridge heatersTemperature Conversion Calculator cartridge heaters designDesign Your Cartridge Heaters-Here
square cartridge heatersVoltage Engineering Reference cartridge heaters problemsEvaluating Your Cartridge Heater Insertion Heater Problems
miniature small diameter cartridge heaters3 Phase Calculator-Delta & Wye cartridge heaters-installation tips and maintenanceCartridge Heater-Installation Tips & Preventive Maintenance
bolt cartridge heatersCalculator for Heating Solids, Fluids or Gases within a Specific Time cartridge heaters, metric insertion heaters additional informationAdditional Cartridge Heaters Information


Our industrial electric cartridge heaters including metric and imperial heaters...

Consists of the following cartridge/insertion heater categories:

cartridge heaters, metric cartridge heaters, custom electric heaters  Standard imperial and metric round cartridge heaters
cartridge heaters, metric cartridge heaters, custom electric heaters  Medium watt density cartridge heaters
cartridge heaters, metric cartridge heaters, custom electric heaters  High watt density cartridge heaters
cartridge heaters, metric cartridge heaters, custom electric heaters  Split sheath cartridge heaters
cartridge heaters, metric cartridge heaters, custom electric heaters  Square cartridge heaters
cartridge heaters, metric cartridge heaters, custom electric heaters  Small diameter/miniature pencil heaters
cartridge heaters, metric cartridge heaters, custom electric heaters  Bolt cartridge heaters
cartridge heaters, metric cartridge heaters, custom electric heaters  Custom cartridge/insertion heaters

Applications for the above include:

cartridge heaters, metric cartridge heaters, custom electric heaters  Cartridge Heaters for-Extrusion Dies, Liquid Immersion
cartridge heaters, metric cartridge heaters, custom electric heaters  Metric Heaters for-Plastic Molds and Injection Molding
cartridge heaters, metric cartridge heaters, custom electric heaters  Insertion Heaters for-Plastics Extrusion
cartridge heaters, metric cartridge heaters, custom electric heaters  Custom Cartridge Heaters for-Packaging Machinery, Labeling and Sealing
cartridge heaters, metric cartridge heaters, custom electric heaters  Square and Round Cartridge Heaters for-Hot Plates and Platens, Hot Stamping
cartridge heaters, metric cartridge heaters, custom electric heaters  Cartridge Heaters for-Hot Runner Molds, Various Types of Dies
cartridge heaters, metric cartridge heaters, custom electric heaters  Insertion Heaters for- Medical Equipment and Other Industrial Applications

The square cartridge heater configuration simplifies wiring and installation while optimizing performance in a wide range of solid, liquid, and gas heating applications. Tooling applications are particularly well served by the square cartridge heater approach. Typical square cartridge heating applications include platens, molds, sealing bars, sealing plates and dies. Versatile slot style mounting simplifies installation in small tooling components such as bushings and nozzles and is particularly useful when leads must exit at a specific location on the component surface.

Some applications demand much longer heater life, that is where miniature small diameter pencil/cartridge heaters have immense application value. Life expectancies of five, seven or even ten years are not unreasonable for some mission-critical applications:


cartridge heaters, metric cartridge heaters, custom electric heaters  Blood warmers used in medical theaters must never fail
cartridge heaters, metric cartridge heaters, custom electric heaters  Battery conditioners for EVA spacesuits on the International Space Station must last ten years      before replacement, due to payload costs
cartridge heaters, metric cartridge heaters, custom electric heaters  Here on earth, high throughput semiconductor chip testers must operate without significant      downtime for the 5 year life of the equipment. For these applications, a service life of 50,000 to      90,000 hours is a requirement that is both reasonable and attainable.

Some common issues with most standard cartridge heaters are as follows:

Heater removal: a cartridge heater will oxidize after many hours of operation and maybe difficult to remove. Consider drilling a through hole so the heater can be hammered out or choose a split sheath cartridge heater.

Lubricants: like graphite or silicone facilitate the insertion of the cartridge heater but can carbonize at higher temperature and then the heater will be really stuck.

The NPH split sheath cartridge heateris designed especially for platen, die or mold industrial heating applications where the holes are poorly drilled or worn through age. Independent expansion of each section of the split sheath cartridge heater when energized, creates intimate contact with the wall of the hole.

Through the patented split-sheath design and highly specialized manufacturing techniques, NPH split sheath insertion heaters reduce your total cost of process heating by an average of 40% over other heaters.

NPH’s split sheath cartridge heaters use a unique, patented split-sheath design that expand when energized to maximize heat transfer through greater contact with the wall of the bore. Better heat transfermeans less power is consumed to maintain the set point temperature, reducing operating costs.

Bolt cartridge heaters are used to tighten large bolts that secure heavy machinery and equipment. The shaft of the heater is inserted into the hollow bolt and energized to expand it, which allows further tightening of the nut. Manufactured with a high watt density, they heat up in just a few minutes, resulting in cost savings on reduced man hours removing nuts from bolts and studs. Large bolts can be heated to full expansion in just a few minutes. This heater design is manufactured with specific diameter sheaths to fit industry standard hollow bolts. High watt densities with special heated lengths distribute heat evenly to surrounding bolt.



cartridge heaters, metric cartridge heaters, custom electric heaters cartridge heaters, metric cartridge heaters, custom electric heaters

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

sales@nphheaters.com

Toll Free: 1-877-674-9744