B - Operations – Transporting – 21 – D
Patent
B - Operations, Transporting
21
D
113/69
B21D 22/20 (2006.01) B21D 22/02 (2006.01) B21D 22/26 (2006.01) B21D 24/00 (2006.01) B21D 51/12 (2006.01) B21D 51/26 (2006.01) B31B 45/00 (2006.01) B65D 1/26 (2006.01)
Patent
CA 1092444
ABSTRACT OF THE DISCLOSURE The objects of the invention are the manufacture of drawn foil containers which have better appearance and strength and which can be made with these advantages from thinner foil and with greater depth. The essential apparatus employed to achieve these objects having a punch for drawing the container, is chracterised by upper and lower peripheral guide structures located around the punch which present a plurality of intercalating radially aligned ridge formations for forming in accordance with the process alternate upwardly and downwardly directed light indentations in a flat foil blank before it is drawn and lightly guiding the indented blank to fold into double fold pleats which are thereafter drawn over a drawing edge to form the walls of the container. The container produced is characterised by double fold pleats in its walls.
296504
Falch Hans
Johnson & Hicks
LandOfFree
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