XLANCE® makes anything elastic
from Polypropylene to extra white and non-iron clothing
Easy set
XLANCE® is heat set at 120°C, just above the crystal melting-temperature (against 185-190°C required for spandex). This is due to its molecular architecture and enables the combination with thermosensitive fibers, as well as guaranteeing significant energy and pollution savings.
- XLANCE®
- SPANDEX
XLANCE® makes elasticity durable
thanks to its unique chemical and thermal resistance
Acid test
1 ml of concentrated (98%) sulphuric acid was applied to the center of a denim fabric containing XLANCE® for 4 hours, before rinsing with water: XLANCE® yarn remains fully intact.
XLANCE® is characterized by the absence of any easily-attackable group in his polyolefin backbone and by the presence of the covalent crosslinks. This gives XLANCE® an excellent resistance to any aggressive chemical agents, such as strong acids, alkalis, oxidizing agents, enzyme wash conditions.
Heat test
XLANCE® can withstand temperatures up to 220°C without compromising its integrity and stretch performance thanks to the covalent crosslinks. This makes it suitable for high-temperature textile processes.
- XLANCE®
- SPANDEX
Before heat
treatment
After heat
treatment
![heat_after_2x](https://www.xlancefibre.com/wp-content/uploads/2021/01/heat_after_2x.jpg)
After heat
treatment
Micrographs comparing XLANCE® and spandex fibers before and after 3 minutes treatment at 220 ± 3 °C. Fibers were placed on a slide side by side, covered with slipcover and placed on a hot stage. After cooling, the slipcover was gently removed, leading to the disintegration of spandex but not of XLANCE®.
UV test
XLANCE® yarn is inherently resistant to UVA and UVB radiations.
- XLANCE®
- SPANDEX
Stretch
test
XLANCE® features an innovative gentle stretch power, completely different from the typical high stretch power of spandex. The force required to stretch XLANCE® is much lower than the one to be applied to spandex. This accounts for the unique comfort stretch feeling of XLANCE® shaping fabrics.
- XLANCE®
- SPANDEX
behind Xlance®
The polymers
XLANCE® is a polyolefin-based elastic yarn. More specifically, it is based on copolymers of crystallizable ethylene and non-crystallizable 1-octene monomers. These copolymers, at the solid state, build an elastomeric network, where the crystallites serve as reinforcements and act as physical crosslinks to connect the flexible amorphous chains.
![Schermata 2021-05-17 alle 16.44.14](https://www.xlancefibre.com/wp-content/uploads/2021/05/Schermata-2021-05-17-alle-16.44.14.jpg)
The links
After spinning, XLANCE® undergoes a process to form covalent crosslinks, with the aim to provide the fiber extra thermal stability and mechanical integrity beyond the crystal melting point (i.e. 120°C). Unlike the covalent crosslinks, which are permanent in nature, the crystallites serve as thermally reversible links: at temperatures above their melting point (i.e., 120°C), they disappear, enabling some degree of formability, and re-form upon cooling back, thus allowing fiber setting.
![Schermata 2021-05-17 alle 16.45.18](https://www.xlancefibre.com/wp-content/uploads/2021/05/Schermata-2021-05-17-alle-16.45.18.jpg)