Multi-Layer Barrier Technology
Ixef® Polyarylamide: Fewer Layers Reduce Complexity and Cost
Three-layer HDPE/Ixef fuel tanks meet barrier requirements while offering simplified processing, reduced equipment and tooling requirements, and lower cost versus traditional co-extruded five-layer HDPE/EVOH tanks. They also have better cold weather durability, delivering excellent impact resistance to minus 40°C (SAE J233).
HDPE/Ixef tanks are also less expensive than fluorinated tanks, which must be shipped back and forth to a treatment facility, and monolayer tanks, which contain more expensive barrier additives.
Ixef BXT-2000/0203 resin exceeds the current CARB TP901 standard, which limits fuel vapor emissions to 1.5 g/m2/day for small off-road engines, and the new EPA regulation for fuel CE10. The material also maintains its mechanical properties in new fuels such as bio-diesel and ethanol-based mixtures.
Unlike EVOH, which is limited to continuous-extrusion blow molding, Ixef BXT-2000/0203 can be run on both accumulator and continuous-extrusion machines. For blow molded HDPE/Ixef tanks, no purging is required and changeovers on both machines are quicker and less costly than with EVOH.
Chemical Resistance Enables Two-Layer Barrier Technology

Ixef BXT-2000/0203 can also be used in two-layer barrier structures such as fuel lines, filler pipes and low-permeation fuel hoses because of its ability to withstand direct contact with fuel.
Materials
Ixef® PARA