PLASTIC CLOSURE DEVICE FOR A TUBULAR BAG

摘要

The invention relates to a plastic closure device (1) for a tubular bag made of plastic or a multi-layer plastic film, comprising at least one bottom part (5) that has a spout (7), a spout opening (8), and a flange (4). The flange (4) has an energy-introduction arrangement (10) on the flange underside surface (9) of the flange. The energy-introduction arrangement can be connected to the plastic material or the plastic film of the tubular bag by means of ultrasonic welding. The energy-introduction arrangement (10) has at least one energy-introduction rib (12) arranged concentrically to the spout opening (8) in the peripheral region (11) of the flange (4). A concentrating rib (13) is provided on the flange underside surface (9). The concentrating rib extends within the energy-introduction arrangement (10) and protrudes from the flange underside surface (9) higher than the energy-introduction rib (12) and also extends directly adjacent to the spout opening (8).