Many years of experience gathered from working with manufacturers of solar collectors show that FELDER’s Solar soft solder pastes are ideally suited for the soft soldering of copper piping and coated absorber copper sheets. Our fluxes are based on modified resins.

The flux residue left behind is not corrosive and can stay at the soldered joint. The contour stability of the solder paste is consistent such that the paste does not run before soldering starts.

The outgassing of the flux residue has been kept to a minimum. The solder paste is 100% halide-free. As a result, the coating of the copper sheets is no longer damaged by halogens.

We supply our solder pastes with various flux contents and thus are able to optimally adapt their viscosity to our customer’s production process.