Method and apparatus for manufacturing a shell-shaped package, and such shell-shaped package

A method of manufacturing shell-shaped packages, each of said packages tapering from a wide opening to a narrow end, the method comprising the steps of:

• simultaneously supplying two bands of synthetic material of substantially the same width in a longitudinally superposed fashion so as to form superposed material bands;
• in one perforating operation performed from one material band surface side and in a substantially longitudinal direction, perforating completely through both of said superposed material bands in such a manner that at least one edge defining the wide opening is formed along an ornamental line in each of said material bands, so as to form superposed perforated ornamental lines and two separate superposed suspension portions, each one of the perforated ornamental lines extending substantially throughout a length of the wide opening;
• cutting said superposed material bands in a transverse direction, across the width of said superposed bands, into separate superposed package portions, having superposed cut edges thereof, such that wide openings of successive shell-shaped packages are located proximate to alternately opposite longitudinal edges of the superposed material bands, and joining the superposed package portions together along the superposed cut edges thereof, wherein the separate superposed package portions are connected to each other along the superposed cut edges so as to form a corresponding one of the shell-shaped packages and wherein each of said suspension portions is connected, along a corresponding one of the ornamental lines, to a corresponding one of the superposed package portions and extends to a corresponding proximate one of the longitudinal edges of the superimposed material bands;
• and
• removing one of the suspension portions from each one of the shell-shaped packages.