Coil Heaters for Hot Runner Injection Molding
- Stainless Steel Coil Heater — High temperature capability up to 800°C, excellent resistance to corrosive polymers, ideal for demanding continuous production.
- Brass Coil Heater — Superior thermal conductivity for faster heat transfer, optimized for high-speed molding cycles and thin-wall injection applications.
Stainless steel coil heaters are the workhorse of hot runner systems. With SS304 or Inconel sheath options, they provide robust protection against aggressive resins and sustained high-temperature operation up to 800°C.
Brass coil heaters are purpose-built for maximum thermal conductivity. The brass sheath transfers heat faster than stainless steel, ideal for high-speed molding cycles, thin-wall packaging, and PET preform production.
Coil Heaters — Stainless Steel
Stainless steel coil heaters are the workhorse of hot runner systems. With SS304 or Inconel sheath options, they provide robust protection against aggressive resins and sustained high-temperature operation.Applications
- Injection molding nozzle and manifold heating
- Automotive connector and precision plastic parts molding
- Closure cap making and PET bottle production
- Medical laboratory consumable molding
- Packaging film sealing equipment
Key Features
- Long lifespan under constant heat cycling
- Fast response for stable melt temperature
- Even heat distribution reduces thermal loss
- Stainless steel sheath resists corrosive polymers
- OEM private label and customized engineering available
Coil Heaters — Brass
Brass coil heaters are purpose-built for applications where maximum thermal conductivity is required. The brass sheath transfers heat more efficiently than stainless steel, making it the ideal choice for high-speed injection molding, thin-wall packaging, and PET preform production.Why Choose Brass
- Higher Thermal Conductivity — Brass transfers heat faster than SS, reducing cycle time and improving output.
- Fast Temperature Recovery — Maintains stable melt temperature during rapid cycling.
- Cost-Effective — Excellent performance-to-cost ratio for high-volume production.
- Compact Design — Fits tight manifold spaces and complex runner geometries.
Typical Applications
- Hot runner manifold and nozzle heating
- PET preform molds production
- Packaging industry injection molding lines
- Household appliance plastic housing molding
- Thin-wall injection molding requiring fast cycle times
- Valve gate runner temperature control
Technical Specifications
| Parameter | SS Coil Heater | Brass Coil Heater |
|---|---|---|
| Max Operating Temp | 800°C | 800°C |
| Wattage | 50W – 6KW | 50W – 6KW |
| Voltage | 110V / 220V / 230V / 380V / Custom | 110V / 220V / 380V / Custom |
| Heating Wire | NiCr 80/20 | NiCr 80/20 |
| Insulation | High purity MgO powder | High purity MgO powder |
| Sheath | SS304 / Inconel (optional) | Brass |
| Lead Type | SS braided / Teflon / Custom | SS braided / Teflon / Custom |
| Diameter | Custom according to hot runner system | Custom according to hot runner system |
Request a Quote
Tell us your diameter / width / watt density / voltage. We reply within 12 hours.
Amy: +86 18883188154 | amy-easewise@tzheater.com
Hanna: +86 17351636811 | hanna-easewise@tzheater.com
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Frequently Asked Questions
These heaters are used for hot runner injection molding, manifold heating, nozzle heating, and precise plastic melt temperature control.
SS coil heaters offer higher corrosion resistance and are suitable for aggressive resins. Brass coil heaters provide faster heat transfer and are ideal for high-speed molding cycles.
Yes, we customize diameter, wattage, voltage, lead termination, and sheath material based on your hot runner system specifications.
Both SS and Brass coil heaters can operate up to 800°C.
Standard models: 3–7 days. Customized orders: 7–12 days.