| 摘要 |
820,050. Making cartons. JAGENBEBGWERKE A.G. Dec. 9, 1955 [Dec. 9, 1954], No. 22763/57. Divided out of 820,049. Class 18. Mandrels about which are folded blanks to produce cartons of the kind shown in Fig. 4 comprise a frusto-pyramidal body 12a the smaller section 12b of which merges upwardly in a part of circular cross-section. The mandrels have internal heating elements 49 which assist in the forming of the sharp corners at the upper end of the cartons. The heat may also activate or assist in drying adhesive. The method of folding the blanks about the mandrel is described in Specification 820,049. |
