B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 57/04 (2006.01) B21D 51/44 (2006.01) B65D 43/03 (2006.01)
Patent
CA 2212287
A PROCESS AND AN APPARATUS FOR THE PRODUCTION OF PILE-UP LIDS, AND LIDS OBTAINED THEREBY ABSTRACT The invention provides a process for the production of pile-up lids, each of which comprises an upper wall (1) and an element (2) arranged around the perimeter of said upper wall (1) and which forms a lip (3) protruding above said upper wall (1), and skirt (4) extending below said upper wall (1); the process comprising the steps of bringing together in a synchronous manner external sector elements (9) and internal sector element (10) in radially opposite directions so that, owing to the forced approach of the contact surfaces of the external and internal sector elements (9, 10) with said upper lip (3) of said lid interposed between them, a reeding pressure-moulding is obtained on both the inner and the outer surfaces of said upper lip (3), giving said lip (3) an outline apt to allow piling up on other similar lids. The invention further provides an apparatus for carrying out this process and the lids obtained thereby. (Figure 5)
Fetherstonhaugh & Co.
Seda S.p.a.
LandOfFree
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