| 摘要 |
A moulded one piece plastic closure comprises a base 30 with a lid 28 where the lid 28 is integrally connected to the base 30 by a hinge 32. The hinge 32 is radially inwardly displaced from an outer periphery of the base 30. When the lid 28 is closed the central portion of the hinge 32 has a convex outer surface when viewed in side elevation, with the convex outer surface blending with a smooth curvature into outer surfaces of the lid 28 and the base 30. The hinge 32 has laterally spaced end portions on opposite sides of its central portion 52. The end portions 54, 56 have concave outer surfaces when the lid 28 is closed. The base 30 has a circular periphery. The end portions 54, 56 of the hinge 32 are angularly spaced from each other. The lid 28 is integrally connected to the base 30 as moulded by at least one frangible bridge 46 spaced away from the hinge 32.
|
