PACKAGING

NEXTFLEX
COIL
CARTRIDGE
TUBULAR
ELSTEIN
CONTROLS/TC'S

About

At Nexthermal, we design and manufacture advanced heating elements and assemblies that optimize sealing, shrink, and forming processes across the packaging industry. Whether you’re retrofitting existing machines or designing new systems, our engineering team can deliver heat where it matters most — improving seal quality, cycle time, and energy efficiency.

1. Nextflex® Formable Tubular Heaters

Ideal for: Injection Molding, Hot Runner Systems

Flexible. Durable. Proven across packaging and molding applications.
Nextflex® is a formable tubular heater engineered for versatility — Optimizied for hot runner, injection molding systems. Its solid, formable casing and uniform heat distribution make it a top performer where reliability, responsiveness, and service life are critical.

Key Benefits:

  • User-formable solid casing stays in the groove — easy installation and replacement
  • Excellent choice for hot runner systems
    and injection molding tools
  • Operating temperatures up to 700°F
  • Available in 6.0mm, 6.5mm, 8.0mm, and, 8.5mm diameters
  • Standard straight lengths in stock and ready to ship
  • Made in the USA
  • Optional Plug-n-Heat connection or screw terminals
  • Proven energy savings and reduced downtime through faster maintenance

2. Coil Heater Assemblies

Ideal for: Top Seal, Tamper-Proof Packaging, Bottle Caps, Portion Packs

Precision and flexibility for complex sealing applications.
Our coil heaters are engineered with specific wattage patterns to deliver uniform sealing across multi-layer films and complex profiles. Manufactured in Battle Creek, MI, they meet North American quality standards and can be supplied as individual components or turnkey assemblies.

Key Benefits:

  • Custom coil paths for uniform heat across irregular or 3D profiles
  • Integrated Type J/K thermocouple for accurate temperature reading
  • Made in the USA
  • Available as embedded assemblies for plates and discs
  • Operating temperatures up to 700°F
  • UL-listed 4.0mm options available
  • Long heater life and lower energy use through optimized wattage

3. Swaged Cartridge Heaters

Ideal for: Form Fill Seal, Hole Punching, Sealing Applications

Nexthermal’s swaged cartridge heaters are precision-wound and compacted for dense, durable heating. Engineered with application-specific wattage profiles, they eliminate hot and cold spots to ensure consistent sealing performance.

Key Benefits:

  • High and medium watt density options
  • Optional Type J/K thermocouple
  • Made in the USA
  • Anti-Seize Coating options for easy removal and maintenance
  • ±0.0008” tolerance for maximum thermal transfer
  • UL-listed 4.0mm options available
  • Moisture-resistant options for washdown or humid environments

Cartridge Heaters with Hole Punch Design

Purpose-built for snack and retail bag lines, these assemblies combine a cartridge heater with an integrated knife and thermocouple for fast, accurate punching.

Key Benefits:

  • Tungsten carbide knife tip for long wear life
  • Brazed tip-to-sheath connection for superior heat transfer
  • Made in the USA
  • Anti-Seize Coating options for easy removal and maintenance
  • Sealed washdown-ready design
  • UL-listed 4.0mm options available
  • Standard 3/8” diameter, with custom options available

4. Tubular Heaters

Ideal for: Shrink Tunnels, Drying Ovens, Sealing Plates, and Preheat Zones

Durable and economical, tubular heaters provide even, controllable radiant or contact heat across many packaging processes. Whether used in shrink tunnels, sealing systems, or preheat sections of packaging lines, Nexthermal tubular heaters are engineered for long life, tight temperature control, and energy efficiency.

Key Benefits:

  • Versatile designs for both convection and radiant heating
  • Custom bends and profiles or exact fit in shrink tunnels or sealing fixtures
  • Optimized watt density or faster warm-up and consistent heat
  • Anti-Seize Coating options for easy removal and maintenance
  • Optionalmoisture-resistant and hygienic finishes for washdown applications
  • Energy-efficient design for lower operating costs

5. Elstein Ceramic Infrared Heaters

Ideal for: Thermoforming, Film Heating, and Radiant Preheat Systems

As the global leader in ceramic infrared technology, Elstein heaters deliver fast, consistent radiant heating that’s ideal for sheet and film plastification in thermoforming, sealing, or labeling applications. When integrated with Nexthermal’s thermal modeling and control expertise, they ensure optimal heat distribution and product quality.

Key Benefits:

  • 2.5–9 micron wavelength for efficient absorption across films and plastics
  • Fast response time for reduced cycle times
  • Consistent radiant output for uniform forming and sealing
  • Long service life and low maintenance
  • Available with color-change glaze for easy performance monitoring
  • Ideal for cleanroom or hygienic environments

6. Temperature Control & Sensing Systems

Ideal for: All Packaging Lines

Control the heat. Control the process.
Nexthermal integrates heaters, thermocouples, and smart controllers into matched systems that ensure accurate, repeatable temperature control, faster warm-up, and longer heater life.

Key Benefits:

  • Custom internal or external thermocouples with molded transitions
  • Advanced PID and fuzzy logic temperature control
  • Consistent radiant output for uniform forming and sealing
  • Bluetooth connectivity and SpecView SCADA integration
  • Rugged NEMA 4X enclosures for harsh packaging environments
  • Delivered as complete matched systems for simplified maintenance

Why Nexthermal

Delivering trusted smart heat management® solutions for the world's toughest thermal packaging challenges.
Engineered with passion. Delivered with decades of experience.

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