Method of shaping container bodies and corresponding apparatus

Details Method of shaping container bodies and corresponding apparatus Method of shaping container bodies and corresponding apparatus

2005-04-13

2010-06-01

Jones, David B (Department: 3725)

Metal deforming

By application of fluent medium, or energy field

With actuated tool engaging work

C072S061000, C072S062000, C072S347000, C072S370220, C029S421100

Reexamination Certificate

active

07726162

ABSTRACT:
Method wherein a) a container (1, 6) is placed in a two halves mould (2) having an internal shaped wall (21), b) an internal pressure P of a fluid is build up so as to shape the skirt (12), is characterized in that an external pressure P′of a fluid is applied in an upper space (101) contiguous to an external or upper surface (100) of the open top end (10) and/or in a lower space (141) contiguous to an external or lower surface (140) of the shaped bottom end (14), so as to have, during the span of time Δt, a pressure difference ΔP|P−P′1 low enough to prevent any distortion of the shaped open top end (10) and/or the shaped bottom end (14), so as to form a shaped metallic container (1′, 6′). An apparatus for carring out the method is also disclosed.

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