Metal container suitable to accommodate a heating or cooling component method and for manufacturing it

Method of producing a metal container from a low carbon steel strip or sheet coated on at least one of its surfaces with a coherent laminated coating of a thermoplastics polymer material in which a blank produced from the coated steel strip of sheet to a drawing operation to produce a cup, the method being comprised of the following steps:

• (i) subjecting the cup to at least one drawing and stretching operation to reduce the thickness of the cup wall and to increase the cup height without ironing of the wall surface;
• (ii) subjecting the stretched cup to at least on partial reverse redrawing operation to produce within the stretched cup a first internal chamber whose depth is produced by a reduction of its height without any reduction in wall thickness;
• (iii) subjecting the first internal chamber to a reverse redrawing operation to produce a second internal chamber whose diameter and depth differs from those of the first internal chamber;
• and
• (iv) subjecting the cup base to a reforming operation to produce a third internal chamber whose diameter and depth differ from those of the first and second chamber and whose depth is produced by a reduction in the cup height.