| 摘要 |
1,217,112. Sheet-forming. STERLING SEAL CO. 18 April, 1969 [18 April, 1968], No. 19867/69. Heading B5A. [Also in Division B8] A flanged cap, for a container such as an aerosol can, is made by drawing a sheet of thermoformable material into a mould 21, the rim of which is furnished with radially reciprocable fingers 13. After the drawing, the fingers are retracted to allow portion 17 of the drawn material to sink into portion 15 after which the cap is removed from the mould and the excess material 18 removed. |
