Abstract: Apparatus for forming a reclosable opening in a top wall of a fluid pack while maintaining sealing integrity of the pack until it is first opened includes an opening member secured to the top wall of the pack. The opening member includes an inner disk portion having a central opening and an outer annular portion with the disk portion and the annular portion being separated by a slot which is interrupted by a bridging portion so that it extends circularly over almost 360.degree.. A tongue is mounted for rotation about the central opening and includes a blade extending from the underside of the tongue. The blade is spaced along the tongue to be received within the slot. The blade is longer than the opening member is deep so that the blade pierces the pack and opens the pack as the tongue is rotated to move the blade along the slot.

Abstract: A method for filling and closing a package which is initially open on its upper side and has sealable plastic material about the periphery (2) of that side. The package is first conveyed to a location (6), where it is filled. Thereafter, a covering foil sheet (12) is sealed to periphery (2) to cover the open side. The package is brought to a standstill at the filling location (6), and filled through an opening (11) in a strip of the covering foil (7). The strip of covering foil (7) is then moved in a direction (10) lateral to the direction of conveyance (5) of the package, until the open side of package (1) is covered by the foil strip (7). A foil cover piece is then punched from the foil strip (7), leaving a new opening (11), and is sealed to the periphery (2) of the open side of the package (1). The sealed package (1) is then moved from filling location (6) by the conveyor belt (4).