| 摘要 |
1459663 Sheet forming OSCAR MAYER & CO Inc 19 April 1974 [23 April 1973] 17165/74 Heading B5A [Also in Division B8] An apparatus for producing a windowed closure member having a peripheral channel portion for engagement with a container comprises a magazine 23 for storing metal closure members which have had their central areas punched out, a lower endless conveyer of moulds 21, each having a recess to receive a metal closure member, and an upper series of moulds 22, each having a cam actuated tamping member 75 to trap and impress a web 140 of a film material into the recess of the closure member, and a cutting blade 59 to sever the film around the outside of the recess. |
