A device for the production of hollow, undercut on a projections by means of a deep-drawing packaging and to be produced with this device package produced

摘要

1514260 Egg cartons P HINTEREGGER 11 Sept 1975 [16 Sept 1974 13 May 1975] 37404/75 Heading B8P [Also in Division B5] A carton, for eggs or fruit, deep drawn from thermoplastics foil has an upper portion 2 hinged at 4 to a lower portion 3 and is provided with undercut latches 7, 8 that engage each other. The latches may be provided at the centre as well as along the edges of the upper and lower portions as shown in Figs. 2 and 3. To facilitate separation of the cartons from a stack prior to filling spacing knobs 35, 35SP1/SP, 35SP11/SP, Fig. 12 are formed at the corners of each portion the knobs being shaped so that the top dimension b is larger than the bottom dimension a thereby ensuring a gap c.