A high-frequency (HF/RF) welder for producing thin, neat welds in crystal clear PVC film used in windows, curtains, pergolas, covers and technical textiles.
CRYSTAL ECO was designed for manufacturing transparent PVC film components where the appearance of the joint is just as important as its durability. The machine is ideal for products that need to retain a neat appearance, a tight seal and transparency after welding.
Typical products:
Invisible Seam technology produces a thin, straight and barely visible weld in crystal clear PVC film. The process consists of two stages:
Manual electrode stroke adjustment allows the welding depth to be matched to the film thickness. This gives the operator better control over the appearance of the joint and helps reduce the risk of excessive material flash.
The manually sliding worktable makes it easier to handle wide film rolls and larger material formats. This is important when manufacturing covers, curtains, canopies and other components that require convenient material movement along the weld line.
The machine can be equipped with tooling for additional applications:
Additional machine features
CRYSTAL ECO is ideal for transparent PVC film and technical textile products where a neat, thin weld with minimal visibility is important.
Zemat high frequency welding machines use systems designed to support operator safety, protect key machine components and maintain process stability. These solutions help protect the electrode, material, generator and work area, while process monitoring systems enable fast detection of irregularities and help maintain repeatable welding parameters.
For machines manufactured by Zemat, mandatory electromagnetic field (EMF) emission measurements are carried out in the working environment. The tests are performed by the Mobilab laboratory operating within Zemat Technology Group. The measurement laboratory works in accordance with ISO/IEC 17025 and holds PCA accreditation, confirming the quality of its services and the reliability of measurement results.
Zemat HF welding machines are designed in accordance with European requirements for machinery safety and energy efficiency. The applied solutions support process stability, reduce energy losses and help maintain repeatable production parameters.
HF Smart Control™ includes:
When purchasing a Zemat machine, customers also gain direct access to the team that knows its design, configuration and welding process. Zemat machines are supported by our own technical service team, so there is no need to rely on third-party providers or explain the machine and process from the beginning.
We support customers during installation and commissioning, train operators and maintenance teams, and provide technical service worldwide. In many cases, issues can also be diagnosed and resolved remotely by checking machine settings, recipes, process parameters or system messages without waiting for an on-site service visit.
Every welding process has different requirements, so the machine configuration is selected according to the specific product, material, component dimensions and planned production conditions.
Tell us what you need to weld and how your process works. Based on this information, we can help select the right machine model, generator power, working area, operating method, tooling and any additional equipment required.
CRYSTAL ECO is an HF welder designed to produce thin, neat and barely visible welds in crystal clear PVC film.
Invisible Seam technology produces a thin, less visible weld in transparent film. The process combines welding and material cutting with subsequent pressing and flattening of the seam.
The machine is ideal for manufacturing crystal clear PVC film windows, curtains, transparent partitions, pergolas, canopies, roller blinds, covers, projection screens and technical textiles.
Yes. CRYSTAL ECO can be equipped with special tooling for welding zippers, keders and Omega profiles to transparent PVC film.
Yes. The manually sliding worktable makes it easier to handle wide rolls and larger sheets of PVC film and technical textiles.
The welding depth can be matched to the film thickness by adjusting the electrode stroke. This helps control the appearance of the joint and reduce excessive material flash.
CRYSTAL ECO is primarily designed for crystal clear PVC film. It can also be used with selected PVC- or PU-coated technical textiles, depending on the application.
Yes. The machine can be configured for the film type, material thickness, weld width and additional components such as zippers, keders or Omega profiles.
