Opener cap

An opener cap, comprising:

• a screw cap including a female screw configured to be joined with a male screw formed in a side-surface upper part of a can main body, the screw cap including a cylinder rib projecting downward from a top plate rear surface of the screw cap and upper ratchet teeth formed at an opening end of said cylinder rib, the upper ratchet teeth projecting downward from said top plate rear surface, and
• an opener including an annular blade for cutting a film serving as a section to be opened and lower ratchet teeth formed at an opening end of the opener, the lower ratchet teeth projecting in an opposite direction from the annular blade,
• wherein the film seals an upper lid in which an opening of the can main body is formed,
• wherein the opener capable of being housed in the screw cap with the annular blade facing upward before use, and capable of remaining in the opening of the upper lid after opening of the film,
• wherein the upper ratchet teeth and the lower ratchet teeth mesh with each other only in a tightening direction of the screw cap,
• wherein the upper ratchet teeth comprise an inclined surface which faces substantially downward in an axial direction of the screw cap,
• wherein the lower ratchet teeth comprise an inclined surface which faces substantially upward in an axial direction of the opener, and
• wherein the inclined surface of the upper ratchet teeth engages with the inclined surface of the lower ratchet teeth.