| 摘要 |
1445050 Seaming KONINKLIJKE EMBALLAGE INDUSTRIE VAN LEER BV 1 Oct 1974 [2 Oct 1973] 42665/74 Heading B3J [Also in Division B8] A circular, elliptical, square &c, end-closure, Fig. 1, with a peripheral portion of sheet metal containing a, U-shaped channel 1, 2 is folded inwardly, Fig. 2, through 180 degrees, the wall 6 of a container is inserted in the bent channel thus produced, Fig. 3, and the channel walls 1, 2 radially compressed against the container wall. An adhesive or jointing material may be used in the seam, and a closure may be secured to opposite ends of a plastics, fibre or cardboard container simultaneously. A separate metal peripheral ring is used, Fig. 4, if the rest of the closure is of plastics &c. A rim on the rest of the closure, Figs. 5 and 6 (not shown), may then be inserted in the bent channel, followed by insertion of the container wall or the closure and wall may be inserted simultaneously, either producing the seam of Fig. 7. |
