Film folding-up and guiding device of filling and packing machine

A film folding and guiding apparatus for use in a filling and packing machine, characterized by comprising:

• a film folding mechanism for double-folding a continuously-fed film drawn out and guided from a film winding core along the longitudinal direction of the film and is provided the upper portion side of a machine table of a filling and packing machine;
• a longitudinal sealing mechanism for longitudinally sealing at least both of right and left edge portions of the double-folded film which is folded up in a cylindrical form by a folding guide of said film folding mechanism;
• a lateral sealing mechanism that is provided below said longitudinal sealing mechanism and laterally seals the cylindrically-shaped film formed by said longitudinal sealing mechanism to form a bottom portion of a packing bag which will be formed;
• a filling mechanism for filling pack-target material into the cylindrically-shaped film having the bottom portion formed through the lateral sealing of said lateral sealing mechanism, a portion of the film which will serve as a bag open portion being laterally sealed by said lateral sealing mechanism while the film is fed, thereby forming a packing bag that is heat-sealed at the four sides thereof;
• a cutter mechanism for cutting a laterally-sealed portion of the packing bag which is sealed at the four sides thereof;
• and
• a film guide member that is located between said film folding mechanism and said longitudinal sealing mechanism so as to be adjacent to said longitudinal sealing mechanism, and holds and regulates the outer surface portions of the folded portions of the double-folded film, thereby suppressing the positional displacement of at least both the right and left edge portions of the double-folded film which is folded up and guided and accurately sealing both the edge portions of the film in a proper positional relationship.