Front load pneumatic drive work tray high frequency welder

SIGNA 4  single station front load shuttle high frequency welder with 4kW stable controlled HF power output is made for various industrial high frequency welding and heat sealing applications requiring precision flat surface for product positioning and complex shape welds. 

The machine is suitable for welding materials such as: PVC, PU, ​​PET, A-PET, PLA.



Machine modifications

Universal welding machine

SIGNA 4 is a perfect machine for production of blister & clamshell packages, medical containers like blood or ostomy bags with switchable welds for tubes and outer edge, laboratory, rehabilitation equipment, automotive parts, cosmetics, etc. Heated electrode plate with temperature presets gives high accuracy for consistent welding of hard PVC/PET foils or PU foams.

The high frequency welder can be easily converted to a standard Heat Sealer for applications where high frequency welding is not necessary or impossible (e.g. PP or PE materials). The machine is equipped with special quick change 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 touch screen HMI and programmable PLC, the operator can easily save multiple (1000) weld/seam recipes.

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.

Why is our technology unique?

WCS™ Weld Check System
Verifying and signaling the HF/RF weld preset parameters / end cycle process. Collects all data pertaining to each weld cycle for remote diagnosis of any issues or problems with machine setup or power output.
QuickGrip™ System
System for quick and easy replacement of electrodes. The electrodes are attached with pneumatic clamps activated from the control panel.
AntiFlash™ System
Ultra-fast Solid-State ARC sensor & full output overload protection.
ZTG iCOM™ System
Built-in VPN client and VNC server making up the internet interface allowing remote control of machine parameters, weld cycle and diagnostics or software upgrade.
Safety guards
Special guards with safety limit switches designed for protection against electromagnetic radiation (compliance with EN and EMC standards).


ZEMAT TG High Frequency welding machines are designed and built to very strict European Environmental and Safety regulations and have custom design solutions for weld and safety control.

ECO-Friendly HF Technology incorporated in the High Frequency machines contains:

Low energy consumption

| Energy efficient ECO HF generators with microprocessor control of output power
| Low power consumption and real time power output recognition
| 90% less power consumption than with traditional heat powered welding systems

AutoTuning System™

| Dynamic High-performance HF impedance matching
| Dynamic Auto Tuning and Arc protection unit
| Ultra-fast reflected power control

Highly efficient and stable HF generators

| RF power output efficiency at 70-90%
| Harmonic distortions eliminated by frequency band filters
| Very limited heat dissipation preventing overheating