| 摘要 |
1519939 Closure assembly ALUMINUM CO OF AMERICA 14 April 1977 [26 April 1976] 15578/77 Heading B8T Container 40 is closed by an assembly comprising a plastics sealing ring 12 having a channel to receive the lip of the container, a sealing surface to which is heat sealed a metal foil layer 14 and an outer shoulder 28 which engages an inwardly projecting lip 34 of a plastics overcap 16. |
