Improvements in or relating to the capping and sealing of cartons, cups, and like receptacles, of paper or cardboard

摘要

769,157. Closure caps. GEE MANUFACTURING CO., Ltd. May 12, 1955, No. 13696/55. Addition to 719,404. Class 125(3). In a modification in the closure cap of the parent Specification, the cap consists of a combination of metallic foil aSP1/SP, aSP2/SP, a3 and a flexible thermoplastic or thermosetting compound bSP1/SP, b2 b3 which permits heat-sealing of the cap to a carton x.