| 摘要 |
<p>Process for the production of necklaces in the jewellery field, particularly of necklaces of the barrel type or with other more complex shapes, comprising several stages. A first dying stage during which a precious metal thread (10) which is fed with intermittent motion according to a predefined step is progressively died until it reaches a predetermined conformation; a second dying stage during which a precious metal tape or plate which is itself fed with intermittent motion and according to a predetermined step is progressively died until it takes up a barrel type shape or another more complex shape. The thread that results from said first dying stage is inserted into the tape or plate during the dying operation, and at the first dying stage of the process. Said thread (10) is shaped so that for each subsequent step it has a couple of portions (24, 24') that have a slightly longer diameter and a portion (25) which is found between portions (24, 24') of the couple. Portion (25) has a diameter that is slightly shorter than the average diameter of thread (10). Moreover during the second dying stage of each barrel (23) or of any other desired shape the necklace has, said couple of portions (24, 24') is inserted into each barrel (23) or any other desired shape.</p> |
