Method for producing sanitary cover for beverage can

A method for manufacturing a sanitary cover for a beverage can comprising:

• a cover mounting step of covering a vinyl cover, which is opened at a lower end portion and enclosed in all directions except the lower end portion, from an upper end portion to a middle portion of the beverage can;
• a cover adhering step of contracting the entire vinyl cover by heating the covered vinyl cover so as to be adhered on the surface of the beverage can;
• and
• a three-dimensional cutting line forming step of forming a first cutting line perforated at predetermined intervals along a boundary point between a lid cover and a periphery cover of the vinyl cover, which cover the upper surface of the beverage can, and a second cutting line perforated at predetermined intervals along the peripheral surface of the periphery cover, which surrounds the peripheral surface of the beverage can, by a cutting line forming part while the beverage can and the vinyl cover move and pass through the cutting line forming part,
• wherein in the cutting line forming step, the second cutting line is formed in a circle along the peripheral surface from one side of the peripheral surface of the periphery cover but is formed only near to the start point of the second cutting line, and the first cutting line is formed in a circle along the boundary point between the periphery cover and the lid cover but is formed only to the opposite point of the start point of the first cutting line.