Performance
Player Friendliness - Bonar’s Polyethylene yarns have a very low abrasive index in comparison to nylon and a competitor’s polyethylene yarn (see Abrasion graph right), making Bonar’s Polyethylene yarn an extremely player friendly product. This is important to meet the highest FIFA quality standard.
UV Stability - The current standard is set that yarns may not exceed 50% reduction in tensile strength after 6000 hours testing in the Weather-O-Meter (WOM) machine. Within our development department all Bonar grass yarns are tested in a WOM machine, for a minimum of 6000 hours, according to ISO 4892-2 (radiation of 0.50 W/m2 black standard temperature of 65°C), because we know that our products will be exposed to extreme climatic conditions. The graph (above) shows the excellent UV performance of Bonar Polypropylene and Polyethylene yarns. Our polyethylene yarns are tested up to 20,000 hours yet still show a reduction in tensile strength of less than 30% making them extremely suitable for long life outdoor applications.
Durability - Lisport Test
Yarns for sports-carpets must not only be durable in terms of resistance to wear, but also resistant to deformation (change in aspect), as this will affect the sports related and playability properties of the sports surface. As there is no real established test method to determine and quantify deformation of yarns, the Lisport test is used for this purpose according to the FIFA and UEFA standard. Bonar’s polyethylene yarns have the highest resistance to deformation (change in aspect) of the yarns tested.
Taber Test
Bonar yarns were tested at various sports test institutes to determine their resistance to wear in comparison to other competitive products. The Taber test (Weight Loss graph), determining resistance to wear, shows Bonar’s Polyethylene and Polypropylene yarns out-perform their competitors when it comes to weight loss.
| Heavy Metal | Unit | BonaSoft | Bona - GrassMkII | Norm |
| Lead | [mg/kg] | 6 | <3 | 85 |
| Cadmium | [mg/kg] | <0.3 | <0.3 | 0.8 |
| Chrome total | [mg/kg] | 7.2 | 5.7 | 100 |
| Mercury | [mg/kg] | <0.3 | <0.3 | 0.3 |
| Zinc | [mg/kg] | 15 | 11 | 140 |
| Tin | [mg/kg] | <10 | <10 | - |
| Copper | [mg/kg] | 119 | 109 | - |
Besides the "concentrations" of heavy metals, it's important to what extent the present heavy metals are "leachable" during (acid) showers, searing and sunlight. Below the results are listed against the new DIN V 18035-7 norm.
| Heavy Metal | Unit | BonaSoft | Bona - GrassMkII | Din Norm² |
| Lead | [mg/l] | <0.005 | <0.005 | <0.04 |
| Cadmium | [mg/l] | <0.0005 | <0.0005 | <0.005 |
| Chrome total | [mg/l] | <0.005 | <0.005 | <0.05 |
| Mercury | [mg/l] | <0.0002 | <0.0002 | <0.001 |
| Zinc | [mg/l] | 0.19 | 0.25 | <3.0 |
| Tin | [mg/l] | <0.05 | <0.05 | <0.05 |
| Copper | [mg/l] | 0.01 | 0.02 | - |
Conclusion
BonaSoft & BonagrassMkII Yarns may be used anywhere without restriction,
also in sensitive areas. BonaSoft & BonagrassMkII Yarns may also be recycled,
dumped or burnt as normal waste.