Impress Group B.v.

Cornelis Verboom

Guy Druesne

Method wherein a) a container () is placed in a two halves mould () having an internal shaped wall (), b) an internal pressure P of a fluid is build up so as to shape the skirt (), is characterized in that an external pressure P'of a fluid is applied in an upper space () contiguous to an external or upper surface () of the open top end () and/or in a lower space () contiguous to an external or lower surface () of the shaped bottom end (), so as to have, during the span of time &#x394;t, a pressure difference &#x394;P|P&#x2212;P&#x2032;1 low enough to prevent any distortion of the shaped open top end () and/or the shaped bottom end (), so as to form a shaped metallic container (). An apparatus for carring out the method is also disclosed.

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HP Leeuwarden, Netherlands

Cornelis Verboom