scope:

The material defined by this specification is a thermoplastic blow molded composite based on high molecular weight PE-HD, EVOH and PE-LLD tie layers (Figure 1).

This specification defines a composite material used in manufacturing of blow molded fuel tanks and similar articles. The composite consists of a coextruded and blow molded high density polyethylene, barrier layer of ethylene/vinyl alcohol and tie layers of linear low density polyethylene, and has excellent chemical resistance and low fuel permeation characteristics.