Folding machine for forming folded paper handkerchiefs

A folding machine for forming paper handkerchiefs folded in a longitudinal direction and a transverse direction, the folding machine comprising:

• a longitudinal folding unit comprising:
• a first longitudinal folding board comprising a first bevel edge;
• a second longitudinal folding board comprising a second bevel edge;
• a third longitudinal folding board mounted above the second longitudinal folding board and comprising a third bevel edge parallel to the first bevel edge;
• and
• a fourth longitudinal folding board comprising a fourth bevel edge parallel to the second bevel edge, wherein the second longitudinal folding board and the third longitudinal folding board are configured between the first longitudinal folding board and the fourth longitudinal folding board, and a part of the fourth bevel edge of the fourth longitudinal folding board and a part of the second bevel edge of the second longitudinal folding board are overlapped;
• wherein a paper web is fed into the longitudinal folding unit, one side of the paper web is folded inwardly in the longitudinal direction along the first bevel edge of the first longitudinal folding board, the longitudinally folded side of the paper web passes through a gap between the second longitudinal folding board and the third longitudinal folding board while another side of the paper web is being folded inwardly in the longitudinal direction along the second bevel edge of the second longitudinal folding board, and the another longitudinally folded side of the paper web passes through a gap between the second longitudinal folding board and the fourth longitudinal folding board;
• and
• a transverse folding unit disposed beside the longitudinal folding unit for receiving the longitudinally folded paper web, comprising:
• a cutter wheel comprising at least three cutters;
• a bed knife wheel disposed next to the cutter wheel and comprising at least three bed knives, wherein the paper web is fed between the cutters of the cutter wheel and the bed knives of the bed knife wheel and is sequentially cut into a paper handkerchief;
• a first folding wheel;
• a second folding wheel;
• and
• a main folding wheel, wherein the bed knife wheel, the first folding wheel, and the second folding wheel are respectively disposed next to the main folding wheel, each of the paper handkerchiefs is adhered to the main folding wheel and is delivered thereby to the first folding wheel and the second folding wheel sequentially, the first folding wheel is for folding the paper handkerchief in the transverse direction for a first time and the second folding wheel is for folding the paper handkerchief in the transverse direction for a second time.