Cap having a pilfer-proof packaging mechanism

摘要

PCT No. PCT/JP94/01174 Sec. 371 Date Mar. 15, 1995 Sec. 102(e) Date Mar. 15, 1995 PCT Filed Jul. 18, 1994 PCT Pub. No. WO95/03224 PCT Pub. Date Feb. 2, 1995A cap is fixed to a cylindrical neck of a vessel and is provided with a pilfer-proof packaging mechanism that can definitely verify whether the cap has been opened. The cap includes a resin cap body formed in a cylindrical shape with a top and a resin pilfer-proof ring that is fixed to a bottom portion of the cap body so as to be exposed from the cap body. The pilfer-proof ring is cut at a portion to be a spiral-like strip once the cap has been opened.