DuPont Selar® RB 421 EVOH Barrier Resin  (discontinued **)

Selar® RB 421 barrier resin is a pellet blend of EVOH (ethylene vinyl alcohol) and a proprietary adhesive for EVOH and polyethylene.Selar® RB 421 has been designed for use in blends with polyethylene (HDPE, LDPE, LLDPE) in extrusion blowmolding of articles made with DuPont proprietary Laminar Technology. The DuPont Laminar Technology has also been used for other processes such as sheet extrusion and tube extrusion. Selar® RB 421 was specifically designed for applications requiring oxygen barrier and in some instances provides excellent solvent barrier, but is not intended to replace the nylon blends.Information provided by DuPont Packaging Polymers.