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Welding machines for crystal clear PVC and invisible welds

CRYSTAL high frequency welder is created for the production of crystal clear PVC windows and cinema and projection screens with Invisible Seam technology. With the use of special tools, the CRYSTAL HF welder creates a strong and very thin linear weld to join crystal clear PVC film.

CRYSTAL ECO is an economical version of a high-frequency welding machine designed for making invisible welds for example in transparent foil. A manually sliding table of any dimensions facilitates working with wide rolls.



crystal eco




Crystal Eco

Durable, invisible weld

The machine has a 6 m work table. A special back and front trough configuration and fabric layout during welding provides effective and an automatic weld/cut/press cycle to make the thin-line weld virtually invisible. The final pressing (if needed) is achieved with a separate, independent welding bar, which can be used for omega profiles and standard linear welds as well.

Fully advanced programming functionality, including ATS™ auto-tuning and WCS™ systems, is achieved thanks to an onboard PLC integrated with a 10″ touch screen HMI. CRYSTAL machines have smooth HF power output 1-4 kW with high precision down stroke mechanism and a pressure control.

The vacuum section of the work table with special magnetic attachments allow for easy positioning of films/fabrics and welding of zippers with the use of optional tools. The CRYSTAL high frequency welder machine is a ready to use solution. There is no need for assembly and special installation.

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).


Low energy consumption

Machines only use full power during short HF weld cycles.

AutoTuning System™

System adjusts the input impedance for quick and precise reaction to the changing load characteristics during welding cycle saving energy needed to complete the weld.

Highly efficient and stable Gen5 HF generators

Converting collected energy to high frequency with minimal losses.

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