Abstract: A method of and apparatus for packaging contaminated or poisonous waste materials. The waste materials are deposited in a plastic bag disposed on a cylindrical opening in a container provided with a lid and having vacuum and filter means for sucking air off the area of the open upper end of the plastic bag when the lid is opened for disposal of waste. Below the lid there is provided a plastic foil and means for moving the plastic foil over the bag opening for sealing the plastic bag by means of a heating structure which is adapted to engage and heat the plastic bag and foil. Before sealing of the bag, however, the vacuum means is energized with the lid closed so that the plastic bag is evacuated and, after sealing and opening of the container cover, may be removed in a compressed, easily manageable state with relatively small volume.