Surface quality or tensile strength?
But the surface is not always the most important aspect. If high tensile strength is required, as in the case of filters, for instance, a needle with a teardrop-shaped working part offers clear advantages: Due to its cross-section, this needle achieves the highest fiber protection, and inflicts minimal damage on the substrate.
Efficient – for higher production speed
Since high production speeds are key in filter production, the twisted needle is ideal. Its trademark is efficiency. The twisted working part means the barbs are more defined during operation – and the more efficient needling enables higher production speeds.
Application consulting – solutions from the experts
Whether teardrop-shaped or twisted needle, these are just two of the many needle types that the Groz-Beckert portfolio provides for the filter industry. At the Groz-Beckert booth at the ITMA 2015, along with the needling machine made from transparent acrylic glass, a needle dispenser will also be available for visitors. This not only gives recommendations but also provides sample needles for customer-specific requirements.
If you'd like more detailed information on the production of filters and felting needles, the Groz-Beckert experts at the ITMA booth will be happy to advise!