Processing method for undetachably printing pictures on surface of a fastening sheath for shoe lace head

A method for undetachably printing pictures on a surface of a fastening sheath for a shoe lace head, comprising the steps of:

• processing acetic acid fiber at a high temperature;
• pressing the fiber into a transparent film which is wound into a roll of film;
• printing one side of the film with colorful pictures by an ink printing technique;
• printing two liquid transparent inks onto the side of the film to cover the colorful pictures as a protective coating for protecting the colorful pictures from being corroded by chemical adhesive agents and for ensuring that the colorful pictures will not evaporate when wrapping and fastening the shoe lace head;
• providing a clamping seat, and a fixed mold and a movable mold which are both operated at a certain temperature;
• placing the head section of the shoelace on the fixed mold;
• spraying the head section with a chemical adhesive agent from the group consisting of MEK, acetone, and toulene;
• feeding the roll of film to a location between the fixed mold and the movable mold by means of the clamping seat;
• moving the movable mold toward the fixed mold to mate therewith and cut off the film into a segment of film;
• wrapping and fastening the head section of the shoe lace with the segment of the film to form a fastening sheath for the shoe lace head.