Abstract: A forming, filling and sealing machine comprises three sealing mechanisms for heat sealing a film, a folding mechanism for inwardly folding the width direction middle part of the film along the longitudinal direction of the film, and an injection pipe for injecting in filling materials. A first sealing mechanism heat seals a long sheet film to be carried downwards with both side ends overlapped with each other, the heat sealing being applied to the overlapped both side ends along the longitudinal direction of the film. A second sealing mechanism heat seals at least the top of two ridge portions formed by the folding mechanism in the film along the longitudinal direction of the film. A third sealing mechanism is disposed below the injection pipe for horizontally heat sealing the film and cutting the heat sealed portion.

Abstract: An object of the present invention is to provide a control method for a box motion type end-sealing carried out by a longitudinal type or lateral type bag forming, filling and packaging machine, which can permit the end sealing time period to be set as long as possible even if a linear section (a sealing length of a predetermined stroke) is made constant. There is provided a method of controlling an end-sealing time period for a bag forming, filling and packaging machine.

Abstract: In a cross joining and/or cross cutting station in a flow packing machine, opposed tool parts are moved in complementary round paths such that they can press against opposite sides of a tubular packaging web for cross closing/cutting the web between successively advanced products therein, during continuous movement of the web. Normally the tool parts are moved by simple rotation, but according to the invention they are moved in a paracyclic manner, i.e. with substantially unchanged orientation in the space. This makes it possible to maintain the tool carrying parts in operative connection with an external power source through flexible wires or hoses, such that in a packaging machine with more packaging lines it is possible to operate all of the tool sets by common moving means, yet also with the possibility of deactuating the tools individually in case of operational disturbances in one or more of the lines.

Abstract: A sealing apparatus is provided with a sealing block and inductors embedded in the sealing block. Each of the inductors is partially exposed above the surface of the sealing block and is provided with a first pressing portion for pressing the packaging material. The sealing apparatus also includes counter elements, each of which is disposed in opposing relation to the inductors so that packaging material can be squeezed between the counter elements and the inductors. In addition, a voltage applying device is provided for inductors and the counter elements are provided with a second pressing portion at a position corresponding to the portion of the packaging material that is nearer to a liquid food than to the sealing zone.