Patent ID: 8365968

Claim:
A cap of a tube container having an automatic sealing structure, comprising: a cone having a shape of a hollow pipe, and including: a nozzle hole formed in a first end of the cone to permit a nozzle to move in and out; an insert hole formed in a second end of the cone; and a pair of locking protrusions provided on opposite sides of an outer surface of the cone and adjacent to the insert hole; a body including: a cap part comprising an integrated body which has on a first end thereof an insert hole to permit insertion of the cone, and has on a second end thereof a bottom; a support pipe extending from a center of the bottom, passing through an interior of the cap part and protruding to an outside of the cap part; and a guide slit formed at a position corresponding to each of the locking protrusions, and movably restraining the locking protrusion; a tube containing contents, and having on an injection port for discharging the contents a screw that engages with a thread provided on an end of the support pipe; and an anti-drying unit interposed between the body and the cone to air-tightly close the nozzle hole of the cone which moves forwards and backwards relative to the body.