YARNS
MURTRA
LEON

Polypropylene (PP) is a petroleum-based thermoplastic polymer belonging to the olefin family and is obtained from the polymerization of propylene. The multifilament polypropylene yarn is produced from an isotactic polypropylene homopolymer.

POLYPROPYLENE PROPERTIES
  • Highly resistant and durable
  • 100% recyclable
  • UV resistant
  • 100% virgin resin
  • Bright Solid Colors
  • Abrasion resistant
  • Dirt resistant
  • Non-pilling
  • Excellent adhesion
  • Anti-static
  • Minimal thermal conductivity
  • Mold and mildew resistant
  • Biodegradable
(Kcal./cm2/year) Expressed in kilo-Langley per year
(Kcal./cm2/year) Expressed in kilo-Langley per year
SUNLIGHT RESISTANT

Our yarn contains stabilizers to protect it from the sun’s UV rays, as well as from oxidation and thermal degradation. The unit of measurement used to measure solar energy is the LANGLEY, which is calculated as follows:
1 Langley = 1 cal./cm2 x min.
The amount of energy received from the sun in one year ranges from a minimum of 60 Kly in polar regions to a maximum of 220 Kly in the deserts of Africa. Our yarn retains over 80% of its initial resistance after being exposed to 120 Kly (equivalent to one year’s exposure).

FIBER COMPARISON CHART
  Heat Transfer (air) Absorption Specific Weight g/cm3 Colorfastness Durability Effect of Heat Stain Resistance
POLYPROPYLENE 6 0.05% 0.91 Bulk-dyed so does not fade Excellent Softens at 149°c

Does not absorb liquids,
very hardwearing
NYLON 10 4.50% 1.14 Sunlight and chlorine exposure may cause fading Good Softens at 159°c Not very 
resistant
POLYESTER 7 0.04% 1.31 Good Excellent Softens at 199°c Not very
resistant
YARNS MANUFACTURED
(PP)
Normal tenacity
(PM)
Medium tenacity
(PA)
High tenacity
  • 420 DEN - 6000 DEN TWISTED
    YARN COUNT * 420 450 500 600 840 1000 1100 1680 2000 3000 4000 5000 6000
    FILAMENTS 60 60 60 90 90 90 90 180 180 270 360 450 540
    STRETCH 20-35%  
    TENACITY (gr/den) NATURAL  
    NORMAL PP ≥ 4.5  
    MEDIUM PM ≥ 5.5  
    HIGH PA ≥ 7.2  
    MIN. TURNS PER METER (TPM):
    40
    TWIST DIRECTION :
    S / Z
    MAX. TURNS PER METER (TPM):
    150

    * VARIATION IN YARN COUNT ± 7%

  • 1680 DEN - 6000 DEN UNTWISTED
    YARN COUNT* 1680 2000 3000 4000 5000 6000
    FILAMENTS 180 180 270 360 450 540
    STRETCH 20-35%  
    TENACITY  (gr/den) NATURAL  
    NORMAL PP ≥ 4.5  
    MEDIUM PM ≥ 5.5  
    HIGH PA ≥ 7.2  
    * VARIATION IN YARN COUNT ± 7%
  • 150 DEN - 2000 INTERMINGLED YARN
    YARN COUNT * 150 210 320 420 500 600 840 1000 1680 2000
    FILAMENTS 40 74 74 74 74 148 148 148 296 296
    STRETCH 20-35%  
    TENACITY  (gr/den) NATURAL  
    NORMAL PP ≥ 3.5  
    MEDIUM PM ≥ 5.0  
    HIGH PA ≥ 6.5 ≥ 6.5 ≥ 6.5 ≥ 7.2 ≥ 7.2 ≥ 7.2 ≥ 7.2 ≥ 7.2 ≥ 7.2 ≥ 7.2
    * VARIATION IN YARN COUNT ± 5%
    *** These can be twisted for technical and industrial applications.
USES
CORDAGE
WEBBING
BAGS/SACKING
FIBCS
FILTRATION FABRICS
NETTING