| 摘要 |
<p>The moulding is a thin-wall jacket (1) having an open base and open top of a shape mating at least with a part of the upper side surface (2a) of the cup and full lower surface of the cup flange (2b). It consists of multilateral and/or radially curved side surface, its interior dimensions being equal/bigger than the external dimensions of the cup side surface (2a) and a flange (1b) attached as a whole to the said side surface (1a), having circumference bigger than perimeter of the cup flange (2b). The method of protection lies in that a mould is placed on the cup from below and attached to the cup flange by welding.</p> |
