Abstract: A pinched sack, which is made at least partially from a plastic material in the form of a tube section, has at least one pinched bottom at one end of the tube section. At least some of the plastic material is stretched, and at least one pinched bottom is provided by a thermally induced bonding process.

Abstract: A method for packaging groups of articles to form packaging units, includes sheathing a packaging unit with a film as it moves in a running direction on a transporting path by simultaneously forming a film cover and flaps projecting beyond the packaging unit along a direction perpendicular to the running direction, and positioning the flaps against the packaging unit as the packaging unit moves through a folding unit, fixing the flaps, and forming a film wrapper that is closed on all sides of the packaging unit. A preliminary-fixing step, which includes positioning the flaps in relation to one another, and initially fixing the flaps by generating heat, and exposing the flaps to the heat, follows. This is followed by a definitive-fixing step that includes exposing the packaging unit, as a whole, to generated heat.

Abstract: A method and apparatus for sealing a bag made of a polymeric material by applying heat activated layers on different portions of the bag, wherein the first adhesive layer and the second adhesive layer have respective heat activation temperatures below the softening point temperature of the polymeric material; after creasing the bag along a fold line, applying heat at a temperature below the softening point temperature of the polymeric material to activate the first adhesive layer and the second adhesive layer to adhesive states after the bag has been filled with contents; and folding the bag to form an adhesive-to adhesive seal by contact between the heat activated first adhesive layer and the heat activated second adhesive layer.

Abstract: A method and apparatus for sealing a bag made of a polymeric material by applying heat activated layers on different portions of the bag, wherein the first adhesive layer and the second adhesive layer have respective heat activation temperatures below the softening point temperature of the polymeric material; creasing the bag along a fold line, applying heat at a temperature below the softening point temperature of the polymeric material to activate the first adhesive layer and the second adhesive layer to adhesive states after the bag has been filled with contents; and folding the bag to form an adhesive-to adhesive seal by contact between the heat activated first adhesive layer and the heat activated second adhesive layer.

Abstract: A method and apparatus for sealing a bag made of a polymeric material by applying heat activated layers on different portions of the bag, wherein the first adhesive layer and the second adhesive layer have respective heat activation temperatures below the softening point temperature of the polymeric material; creasing the bag along a fold line, applying heat at a temperature below the softening point temperature of the polymeric material to activate the first adhesive layer and the second adhesive layer to adhesive states after the bag has been filled with contents; and folding the bag to form an adhesive-to adhesive seal by contact between the heat activated first adhesive layer and the heat activated second adhesive layer.

Abstract: The invention relates to a method for wrapping a plurality of soft elements, comprising the steps of stacking the elements, compressing the stack in a direction of stacking, and thus forming a package, inserting in a feeding direction the package into a film, preferably a plastic film, which at least partly consists of a thermoplastic material and which in an at least partly overlapping manner surrounds the package, sealing the film in the feeding direction, and cutting and optionally sealing the film transversely of the feeding direction. The method is characterised in that the step of sealing the film in the feeding direction is carried out by supplying from a nozzle towards the film a pressurised heated gas towards the portions of the film that overlap each other, so that they change into an at least partly molten state and are joined. The invention also relates to a device for carrying out the method.