| 摘要 |
The closing device is formed as a flattened tubular element, which is manufactured in a reticular structure from a plastic material. It is produced with a cross sectional profile (3) in the form of an open C-shape, as a closure with a single spinal piece, with a series of elastic tongues (4), which are spaced along its length. Each of the tongues presents, in its natural position, a configuration, which is roughly circular, with the free ends (5) of each tongue, fitting against the internal wall of the profile. The tongues are pre-formed, so that they automatically return, by elasticity, to their natural position, and are thus suitable to engage in the mesh of each of the faces of the oyster sack. |
