New Rope Material (HM*PP* + HMPE) !

[Dan_Lehman]

This is news to me, though apparently some several years
behind the curve (seeing it mentioned in a 2010 RopeCord
News periodical --Cordage Institue).  Samson Ropes introduced
"Innegra" rope, a combination of some sort of "high-modulus
polyPROpylene" AND HMPE.  And here is a product using that
in the core, with a Technora (aramid copolymer) sheath (and
a spool at about $2.35 per FOOT for 9.5mm size!).

http://www.samsonrope.com/Pages/New-Fiber-to-Rope-Industry.aspx

and another company, too:

www.narescue.com/olympus-rope

--dl*
====

[SS369]

Interesting. Costly !
How many feet are you getting? 

For specialty group use it seems. Aside from its buoyancy, the specs are not that impressive to me, unless I have missed something.

From narescue:

"Diameter: 9.5mm
Weight: 3.82 lb per 100 ft
Elongation: 1.6%
Tensile Strength: 5,495 lbf (24.4 kN)
Fibers (core/sheath): Innegra?/Technora
Sheath Ratio: 62% Technora "

From BlueWater:

BlueWater Ropes 9mm ProTac Static Rope
"Diameter: 9mm
Tensile Strength: 6,000 lbf. (26.7 kN)
Sheath Slippage: 0mm
Grams Per Meter: 58
Sheath Mass: 50%
Elongation:
@ 300 lbf = 2.6% "
$0.92 per foot.

A little thinner, a little stretchier, a little softer on a fall and a little less expensive. 

SS

[Dan_Lehman]

Interesting. Costly !
How many feet are you getting? 

For specialty group use it seems. Aside from its buoyancy, the specs are not that impressive to me, unless I have missed something.

From BlueWater:

BlueWater Ropes 9mm ProTac Static Rope
"Diameter: 9mm
Tensile Strength: 6,000 lbf. (26.7 kN)
Sheath Slippage: 0mm
Grams Per Meter: 58
Sheath Mass: 50%
Elongation:
@ 300 lbf = 2.6% "
$0.92 per foot.

A little thinner, a little stretchier, a little softer on a fall and a little less expensive. 

SS

AND, my goodness, Grandmother, what big stat.s you have
(compared to your 10, 10.5, 11mm siblings) !!!

Less stretch and greater strength (well, 6000 - 5,500 - 6,500) !?!
Something's fishy.
Constant is the reported 50/50 dist. of kern/mantle,
and all say nylon & polyester.  How's the 9mm sooo
much lighter have such non-stretch & strength?!?!

--dl*
====