Abstract: A film continuously fed passes through first rollers and second rollers disposed at wider spaces than that of the first rollers. The first and second rollers are relatively moved and the speed of part of the film continuously fed is reduced to zero temporarily. The tape cut into a strip is juxtaposed in contact with the part of the film of which the speed is reduced to zero and is welded to the film by means such as the high-frequency welding means in spaced manner.

Abstract: The apparatus for welding a strip of tape to film includes a tape feed roller for feeding the film continuously and a welding roller disposed in a position where the film is held between both the rollers, both the rollers being rotated in synchronism with each other. The tape is held onto the outside periphery of the tape feed roller and is cut into a strip by a cutting member. The tape is fed to be overlapped on the film while being held onto the tape feed roller. The film and the tape are held between the tape feed roller and the welding roller and the tape is welded to the film in spaced manner by a welding member provided with the welding roller.

Abstract: A stuffer nozzle of a double pipe type is inserted in a cylindrical member formed by joining opposite ends of a film. Fluid material such as raw egg is supplied from an inner pipe of the stuffer nozzle to fill the cylindrical member with the fluid material. An air valve communicating with an outer pipe of the stuffer nozzle is opened to exhaust air in the cylindrical member and reduce pressure in the cylindrical member in synchronism with a timing that a pair of squeezing rollers squeeze the cylindrical member filled with the fluid material. The squeezed cylindrical member is clamped by a clamping member. The air vent valve is closed to prevent air from entering into the cylindrical member from outside through the outer pipe of the stuffer nozzle in synchronism with a timing that the squeezing rollers are separated from the cylindrical member.