| 摘要 |
PROBLEM TO BE SOLVED: To provide a cover which can be mounted on and dismounted from a packaging container storing food, etc., and which can be surely fixed even when container openings vary in size. SOLUTION: The cover 11 outer shape of a packaging container is either circular or polygonal. On the peripheral edge of the cover 11, lock members 21 protruding outward through a synthetic resin folding part 22 are provided at two facing spots or three or more spots with gaps. The lock members 21 are formed able to press the outside wall of a container main body by turning roughly 90 deg. downward with the folding part 22 in the center. The folding part 22 is formed roughly in a thin panel shape, and are provided with two slits 22a formed in parallel running at right angles to the peripheral edge of the cover 11. By the two slits 22a, the folding part 22 is divided into three in the width direction forming three belt shape parts 22b, 22e. Both outside belt shape parts 22b are provided with a V shape groove 22c crossing in the width direction for making the same as a hinge part able to fold the bottom of the groove 22c. The center belt part 22e is formed thinner than the parts 22b and is deviated from the top face side in the thickness direction. |
