| 摘要 |
Traditionally, the mounting of carton liners in freezing frames (22) is effected purely manually, based on preshaped liner blanks, but according to the invention it has been found possible and advantageous to facilitate this work by means of an auxiliary apparatus having a shaping frame (28, 30, 32), which, in operation, is placed in a centered position above the freezing frame (22), while a carton liner blank is placed centered above the shaping frame and then forced down through this frame, directly down into the freezing frame, whereby the side wall portions (6, 8, 10) of the blank are automatically erected by matrix shaping. Corner joints are not provided for, but in case of carton liners with folded corner flaps (18, 20), it is important that these flaps, when folded, be located at the exterior side of the liner, i.e. between the liner sides and the freezing frame; measures are disclosed for achieving this result with a high degree of safety and without requiring skill of the operator. |
