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Rekos carpeting
polyprophylene (PP)
Along with polyester fibers (PES) polypropylene (РР) is chemically classified as a polyolefin. Chemically inert, this group elements feature a fairly simple molecular structure, consisting solely of carbon and hydrogen.
Due to its chemical inertness, polypropylene fiber is impervious to all existing pigments. The fiber molecules do not contain reactive chains, its structure is sufficiently solid, and so pigment molecules are inhibited from filtering through. Therefore, polypropylene yarns are pre-colored by the manufacturers by introducing pigments into polymer before extrusion. Such solution-dyed fibers have astounding color-fastness and never fade, albeit their color palette is somewhat limited. Polypropylene is notable stain-resistant. Its hydrophobic characteristic defies water-based matter (wine, lemonade), but it remains easily susceptible to oil-based substances (like cake cream or mayonnaise). Polypropylene is a unique material inasmuch as static protection is inherent in its fibers and no additional antistatic treatment is required (please note that it is a transient property, worn over time). Another advantage is a relative cheapness of the fiber. It is half as costly as polyamide, let alone wool fiber.
Among polypropylene downsides are inflammability and low durability. The material melts at 165 °С and does not withstand high-traffic impact, therefore it is not a wise choice for commercial spaces.
Depending on specific setting and way of utility, polypropylene carpets can be either single- or multi-level loops or cut-pile (for carpet construction details see below). High-traffic areas (such as hallways) are best fitted with short single-level loops, 20 oz/m2 (678 g/m2).
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