a two layer thermoplastic fuel container having a capacity of about 5 gallons or less is disclosed that includes an inner barrier layer of polyacetal resin in intimate unbonded surface - to - surface contact with an outer polyolefin layer operative to absorb impact and distribute an applied force , the two layers optionally being mechanically linked at one or more copular regions , but being otherwise capable of independent local displacement with respect to each other . not having a bond between the layers allows them to move independently upon impact or when internal / external forces are applied . also disclosed are methods for making these fuel containers .