The invention relates to a multilayer device for storing and transporting
chemicals, especially highly pure, liquid chemicals for the electronics
industry. The device is produced from a thermoplastic by co-extrusion.
The innermost layer of the device on the contents side is produced form a
stabilizer-free HDPE. The invention relates to a method for producing a
multilayer device for storing and trans-porting chemicals, especially
highly pure, liquid chemicals for the electronics industry, using a
multilayer blow extruder with at least one inner extruder and at least
one outer extruder. The method has at least the following steps: a)
charging the outer extruder with an extrudable polymer or copolymer and
the inner extruder with a stabilizer-free HD-PE; b) plasticizing the
polymer or copolymer in the outer extruder and the stabilizer-free HD-PE
in the inner extruder; c) co-extruding the plasticized polymer or
copolymer in the outer extruder and the stabilizer-free HD-PE in the
inner extruder into a forming device; d) forming the device for storing
and transporting chemicals in the forming device.