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signa duo


IGNA series single or double station shuttle HF welders with 6, 10, 15, 20kW stable controlled HF power outputs are designed for various industrial HF welding and heat sealing applications requiring precision flat surface for product positioning and complex shape welds.

SIGNA or SIGNA DUO with automatic, pneumatically driven work trays are perfect machines for serial production of blister & clam shell packages, medical containers like blood or ostomy bags, laboratory, rehabilitation equipment, automotive parts and assemblies, cosmetics, etc. Heated electrode plate with temperature presets gives high accuracy for consistent welding of hard PVC/PET foils or PU foams.

The HF welder can be easily converted to a standard Heat Sealer for applications where HF welding is not necessary or impossible (eg: PP or PE materials). Machine is equipped with quick change 4 point electrode holder. Custom built tooling and electrodes are available upon request. We have our own in-house tooling department which will design and make any electrode and die required for any demanding production needs.

With the use of 10" touch screen HMI and programmable PLC operator can easily save hundreds of weld/seam recipes and upload or download them to/from USB drive. Full advanced programming functionality, including ATSTM Autotuning, WCSTM Weld Control Systems and VPN client provide excellent flexibility for demanding and advanced industrial environment. All available options, settings and safety features make this machine a perfect tool for high-end production where precision, durability and strength is the key.

Main features

  • HF output power range at 6, 10, 15 and 20kW
  • Side load pneumatically driven shuttle work trays (1 or 2)
  • Heated electrode holding plate up to 160°C
  • Sealing efficiency from 1kW: 25cm2 for standard PVC materials
  • Precision welding and sealing with WCS™ Weld Control Systems
  • Easy conversion to standard Heat Sealer
  • 10" colour touch screen programmable HMI with PLC
  • Memory storage and easy sorting of 1000 recipes for each work tray
  • Built in VPN client and VNC server, WAN-LAN and USB I/O
  • Universal usage for PVC, PU, PET, A-PET, PLA films
  • H-frame rolled steel structure and double wing front access doors
  • ATS™ Autotuning and ultrafast ARC limiter (solid-state antiflash)
  • Automatic smooth glide work trays
  • Easy electrode change system on upper platen
  • Fully shielded HF weld area with pneumatic safety gates


  • Warranty: 12 months
  • Approx. delivery time: contact sales department
  • Certificates: CE, EU, EMC, FCC, OSHA
  • Standard color: Blue, RAL5023


  • Clear plastic blister and clamshell packaging
  • Medical bags, lab accessories, rehabilitation equipment
  • Automotive parts and assemblies
  • Office accessories and promotional items


Gallery - Different models of Signa Duo machines

Gallery - Machine details

Gallery - Applications

Output power: 4 kW
Installed power: 6 kW
Welding surface: up to 100 cm2
Main fuse 25 A
Working Frequency 27,12 MHz ± 0,6 %
Power supply 3x400 V; 50 Hz
Power tube air cooled metal-ceramic triode
Antiflash Ultra-fast solid state ARC limiter
PLC control system 6" Touch screen HMI
Electrode pneumatic press (at 0,1 - 0,8 MPa) 280 - 1000 kg
Electrode pneumatic press (at 0,8MPa) 1000 kg
Electrode stroke 200 mm
Welding table dimensions 450 x 600 mm
Electrode platen dimensions 370 x 550 mm
Weight 700 kg