| 摘要 |
PCT No. PCT/GB93/01457 Sec. 371 Date Jan. 10, 1996 Sec. 102(e) Date Jan. 10, 1995 PCT Filed Jul. 13, 1993 PCT Pub. No. WO94/03367 PCT Pub. Date Feb. 17, 1994An end wall for a can body has a central panel (7) surrounded by a conventional expansion ring (8) which is connected to an inner wall (16) of a channel portion by an upwardly extending deformable annulus (17, 18) so that during thermal processing of a closed can having this end wall, the deformable annulus changes shape to permanently increase the container volume. The deformable annulus protects the side wall and ends of the can from excessive pressure so thinner container materials may be used.
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