BAD HERSFELD, Germany — April 10, 2019 — The FilamentFactory (TFF) has developed a new product line with permanently ultraviolet (UV)-stabilized polyester high-strength multifilament yarns. The outstanding UV properties are achieved by addition of a tailor-made masterbatch during the extrusion process. The additive is physically-mechanically bonded to the polymer and is therefore inherent.
The new product range will be known as 710UV.
Having performed multiple exposure tests according to PV1303 — based on DIN 75202/ISO 105B06 with an irradiance of 420 nm, 1.2W/m² — results clearly show that the new UV-stabilized PET multifilament yarns, after the same exposure time, have 120-percent more residual strength than the standard polyester high-strength multifilament yarn without the UV stabilizer. With black-colored multifilament yarn, the residual strength increases by a further 20 percent.
The weathering simulation tests according to DIN/EN ISO 4892 — Artificial Irradiation or Weathering in Equipment – Xenon Arc Lamps – Methods of exposure to laboratory light sources – Xenon-arc lamps — make the differences even clearer: 60-percent higher residual strength compared to non UV-stabilized PET yarn.
The properties of the new functional high-performance multifilaments are clearly superior to the current UV-stabilized filament yarns. Strengths of 60 cN/tex at an elongation at break of 20.0% and free shrinkage values (180°C; 15min) of 1.3 percent are achieved, making it possible to manufacture textiles with special properties. In addition, individual customer demands can be tailor-made.
Due to the two-stage manufacturing process, the properties such as shrinkage, specific strength/stretch are extremely constant.
Thanks to its unique molecular structure, 710UV shows significantly lower strength loss than conventional UV-stabilized polyester yarns.
In contrast to topically applied UV treatments, 710UV PET has an inherent protection that does not wash off or degrade over time.
These new 710UV PET high-strength multifilament yarns can be used in particular in textile architecture, tents, silos, tarpaulins, aerospace, automotive, outdoor/indoor sun protection and much more.
The new yarn family will be available in titers from 76 dtex up to 6600 dtex and, if required, will also be available with S or Z twist from 60 tpm to 300 tpm.
“With this new development, we have achieved a further breakthrough and can add this yarn to our growing range of specialties, which we offer worldwide,” said Yasar Kiray, business development manager, TFF.
Posted April 23, 2019
Source: The Filament Factory