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PMI Home > Professional > Learn > Unicore® Technology

An astonishing process, bonding rope sheath and core without affecting the rope’s suppleness. Even in the hardest conditions of use, sheath slippage is suppressed.

If the sheath is cut or torn, core and sheath remain bonded together.

With a standard rope, if the sheath is cut by abrasion over an edge, a frequent occurrence in work at height and in rescues, it can slide and gather into lumps.

It then becomes impossible to pass this zone, either to ascend or to descend. If the problem occurs near to the end of the rope the sheath may slide off completely, and the user fall to the ground.

With the Unicore® process the sheath remains in place and the user may escape, either by descent or ascent, taking all necessary precautions. The climber is not stuck without a solution on the rope.

Click here to see a video of our PMI® Extreme Pro™ rope with Unicore® technology.

The Unicore® process brings an undeniable gain in security during delicate and dangerous operations; its advantages are many:

PMI Static Rope with Unicore® Technology:

PMI® Hudson Classic Professional with Unicore® Technology – 12.5 mm
PMI Hudson Classic Pro with Unicore Technology 12.5 mm

PMI® Extreme Pro™ with Unicore® Technology –
11 mm

PMI Extreme Pro with Unicore Technology 12.5 mm

It allows escape if the sheath has been cut. It allows temporary cutting of rope lengths with a knife, without melting the ends, without fraying of the sheath.


It prevents sheath slippage. It reduces shrinkage in water by more than 50 %.


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