| 摘要 |
PROBLEM TO BE SOLVED: To provide a paper container for liquid food and a screw-cap-provided opening device which allow a simple and easy visual check of a condition when a screw cap of a paper container is opened temporarily or comes off from a mischief prevention ring to rotate in the opening direction and secure hygiene.SOLUTION: A paper container for liquid food is equipped with an opening device provided with a screw cap 4 on the top face. The screw cap 4 is screwed, in its inner peripheral surface, with a screw on the outer peripheral surface of a spout of a cylindrical body part and includes a flange 5 and a mischief prevention ring 6 fixed to the top face at the lower end of the spout of the body part. Identification characters 7 are arranged, in an integral form, throughout the outer peripheral surface and the outer surface under the peripheral surface in the lower part of the outer peripheral surface of the screw cap. |
