Patent ID: 6996949

Claim:
A method of manufacturing a packaging container from a packaging material comprising: (a) transporting the packaging material along a packaging material transport path, through a cap attachment station, to a charging station; (b) transporting a carrier sheet with a plurality of caps thereon to the cap attachment station, to feed caps in succession to the cap attachment station, each of the caps including a collar and a lid; (c) at the cap attachment station, separating each cap in succession and attaching the separated cap onto a cap attachment portion of the packaging material prior to forming the packaging material; (d) unseating the lid from the collar to open the cap; (e) punching a hole in an area of the packaging material surrounded by the collar; (f) welding an inner tape onto a reverse surface area of the packaging material around the hole and a pull tab onto an outer surface area of the packaging material around the hole in order to cover the hole; (g) welding together the inner tape and the pull tab in the area of the hole to thereby form a rupture portion; (h) then forming the packaging material, on which the cap has been attached, into a predetermined shape; and (i) at the charging station, charging a liquid food into the formed packaging material.