| 摘要 |
PROBLEM TO BE SOLVED: To provide a plastics cap being easily removed from the mouth of a bottle during the disposal of the bottle after use, and not being liable to breakage at the time of being put on the mouth of the bottle, and further having an excellent appearance and sealing property. SOLUTION: A fitting sleeve 130 is projected on the upper surface of a ceiling board via the circumference of a ceiling board 120 comprising a thin wall fragile line 121 and wall thickness part 122 being horizontal in the central direction to the upper end inner circumference of the peripheral wall 110 of a cap main body 100; then, there is provided with a thin wall fragile line 112 ranging from one end at the tearing commencement side of the thin wall fragile line 121 to the peripheral wall 110, a cutting knob 170 is projected on the outer surface of the peripheral wall upper end position at the tearing direction side in which two tearing thin wall fragile lines intersect to each other, a support stepped ring 211 being in contact with the upper surface of the fitting sleeve of the cap main body is provided on a circumferential surface within the inner end of the circumferential wall 210 of a lid 200, and a vertical surface 161 is formed at a position corresponding to an engaging ring 111 provided on the peripheral surface within the lower end of the circumferential wall of the cap main body of an inner sealing ring 160 being vertically provided from the ceiling board of the cap main body. |
