300W Coil Heater with Built-in Thermocouple Core Value

The 300W Coil Heater with Built-in Thermocouple is designed for high-density, precise temperature profile management in hot runner injection molding nozzles, sealing bars, and packaging equipment. Featuring a compacted MgO insulation core wrapped in a high-grade stainless steel sheath, this heater incorporates an integrated Type J or Type K thermocouple directly inside the element. This eliminates the need for separate temperature sensors, ensuring instantaneous feedback and accurate closed-loop PID control. Capable of operating continuously at temperatures up to 650°C (1202°F), it delivers uniform heat distribution, fast thermal recovery, and guards against resin degradation or gate freeze-off during high-speed production cycles. BACKED BY 30+ YEARS MANUFACTURING EXPERIENCE and UNDERGOES MULTIPLE RIGOROUS QUALITY CHECKS for continuous, maintenance-free operation.

• ✓Integrated Temperature Sensing: Built-in Type J/K thermocouple ensures real-time PID thermal feedback at the nozzle wall.

• ✓ Rapid Thermal Response: High watt-density configuration delivers fast ramp-up times and fast heat dissipation.

• ✓ Extreme Temperature Resilience: Operates continuously up to 650°C (1202°F) for high-temperature engineering plastics.

• ✓ Versatile Sheath Options: Available with Kevlar braided sleeving, stainless steel armor, or fiberglass protection leads.

• ✓ Flexible Coiled Profiling: Can be coiled to exact inner diameters or supplied straight for custom manifold integration.

• ✓ Moisture & Contamination Guard: Sealed transition head prevents plastic melt or moisture penetration into internal wiring.

• ✓ Reliable Quality: 30+ YEARS MANUFACTURING EXPERIENCE guarantees long operational lifespan.

• ✓ Quality Assured: UNDERGOES MULTIPLE RIGOROUS QUALITY CHECKS including high-voltage insulation and grounding tests.

• ✓ Global Compliance: CE, LVD, RoHS, and ISO 9001 certified.

Technical Specifications & Performance Data

Industrial Applications & Solutions

1. Hot Runner Nozzles & Bushings: Precision concentrated heating for single and multi-cavity injection molds to eliminate gate drooling and stringing.

2. Plastic Injection Molding Manifolds: Custom straight or coiled elements integrated into manifold blocks for uniform melt viscosity control.

3. Packaging Sealing Bars & Jaws: Direct continuous heating in high-speed form-fill-seal (FFS) packaging machines.

4. PET Bottle Preform Molds: Precise, localized thermal management across high-cavitation PET preform nozzle tips.

5. Medical Device & Precision Injection: Stable heat distribution required for processing medical-grade PEEK, PEI, and PC resins.

6. Mass Spectrometry & Laboratory Analytical Equipment: High-temperature mini-coil heating elements for gas chromatography and analytical sampling tubes.

HT-Heater vs Standard Market Heaters

Installation & Integration Guidelines

• • Surface Inspection & Cleaning: Thoroughly clean the nozzle surface to remove old plastic residue, carbonization, or grease before coiling or installing the heater.

  • Proper Slide Fitting: Gently expand or slide the coiled heater onto the nozzle body. Never use a metal hammer or sharp tools to force the coil, as this can crack internal MgO insulation.

  • Thermocouple Wiring Lead Protocol: Connect thermocouple wires using proper color polarity (For Type J: White = Positive, Red = Negative). Connect to dedicated PID controller terminals.

  • Lead Wire Routing: Secure lead armor along mold wire channels using clamping plates to prevent pinching or flexing stress during mold stroke cycles.

  • Initial Bake-Out Cycle: Perform a low-voltage pre-heating cycle at 100°C – 120°C for 10 minutes to eliminate ambient moisture absorbed by internal insulation prior to ramping up to 300W full power.

Customer Success Stories

Case 1:

Plastic Injection Moldmaker (Italy)

• Application: 32-cavity precision cosmetic cap injection mold line.

• Challenge: Inaccurate temperature readings from external thermocouples caused nozzle drooling and high scrap rates.

• Solution: Custom 300W Coil Heaters with built-in Type J thermocouples and stainless steel braided leads.

• Results: SCRAP RATE DROPPED BY 92%. “The built-in sensor gives exact PID response right at the nozzle tip. HT-Heater UNDERGOES MULTIPLE RIGOROUS QUALITY CHECKS, and their batch precision is outstanding.”

Case 2:

High-Speed Medical Packaging OEM (USA)

• Application: Medical tray pouch heat-sealing bar.

• Challenge: Space constraints made installing separate thermocouples and coil heaters impossible.

• Solution: Compact 300W Square-Profile Coil Heaters with internal Type K thermocouples.

• Results: SAVED 40% MOUNTING SPACE. “30+ YEARS MANUFACTURING EXPERIENCE is clear in their compact design. The integrated sensor simplified our mechanical layout significantly.”

Pricing & Procurement Options

• • Standard Production: MOQ 10 pieces. BACKED BY 30+ YEARS MANUFACTURING EXPERIENCE ensuring exact dimension repeatability across production batches. Tiered OEM discounts available for 50+ units.

  • Lead Times: Standard Coiled Sizes: 3-5 days. Custom Profiling & Lead Assemblies: 7-10 days. Express sample dispatch available for urgent mold repairs.

  • Global Logistics: Express delivery via DHL, FedEx, UPS, or air freight. Securely packed in anti-static bags and protective export cartons.

  • Sample Orders: Custom samples manufactured upon CAD drawing approval. Every unit UNDERGOES MULTIPLE RIGOROUS QUALITY CHECKS prior to dispatch.

Global Certifications & Compliance

• CE Marking
  Fully compliant with European safety and environmental standards.
• LVD Compliance
  Low Voltage Directive tested for continuous thermal load safety.
• RoHS Compliant
  Constructed using environmentally safe, lead-controlled brass alloys.
• ISO 9001
  Certified quality control covering CNC machining, coil pressing, and electrical testing.

Quality Documentation: Certificate of Conformity (COC) and insulation resistance test reports included.

Comprehensive After-Sales Support

• • Warranty: 1-Year Comprehensive Warranty covering internal heating element and built-in sensor.

  • Technical Support: Application engineers available for wattage distribution calculation, thermocouple calibration, and nozzle fitting assistance.

  • Global Response Network: BACKED BY 30+ YEARS MANUFACTURING EXPERIENCE with technical inquiry feedback within 2 hours.

Ready to Optimize Your Injection Molding?

Next Steps:

• 📧 Request Custom Quote – Specify ID, length, and watts
• 🔧 Free Design Consultation – Hot runner heater sizing
• 📦 Order Test Samples – Verify precision fitment
• 📞 Contact Hot Runner Experts – Response within 2 hours