Adhesive, L-5REN2

L-5REN2 is a polyethylene adhesive for the three-layer coating systems, in granule form. The product is also available in powder form. L-5REN2 is suitable to operate in the temperatures from -45 C up to + 84 C.

The product fulfils the international standards, such as ISO and CSA, when appropriate industrial manufacturing standard procedures are implemented, and a continuous quality system is present. L-5REN is best used in combination with PE topcoat, EJ-EN8 and a compatible FBE, such as EN 301A.

Characteristic	Testing	Requirement	Typical value of L-5REN2
Density, g/cm³	ISO 1183	≥0.920	0.932
Melt Flow Rate (190℃, 2.16Kg), g/10min	ISO 1133	≥1.0	2.01
Elongation at Break(50mm/min), %	ISO 527	≥600	858
Tensile Strength at Yield(50mm/min), Mpa	ISO 527	≥8	12.9
Melting temperature (DSC), ℃	ISO 11357	≥120	125
Vicat Softening temperature A50, (10N), ℃	ISO 306	≥85	103
Water content, %	ISO 15512	≤0.1	0.06
Hardness, Shore D, HD	ISO 868	≥50	56
Peeling Strength (3 Layer) (23℃), N/cm	ISO 21809-1	≥150	240
Peeling Strength (3 Layer) (50℃), N/cm	ISO 21809-1	≥130	150
Peeling Strength (3 Layer) (80℃), N/cm	ISO 21809-1	≥30	50

Extrusion

L-5REN2 can be applied by flat die or crosshead extrusion. The actual extrusion conditions will depend on the type of equipment used and the size of the pipe. The following conditions may be used as a guideline when starting up the extruder:

Item	Feeding Zone	Middle Zone	Transition Zone	Mould Head	Melt Temperature
Processing Temperature（℃）	150～180	190～220	190～220	200～220	190～220