| 摘要 |
A method for the manufacture of a vehicle sun visor, in which a first sheet (5) and a second sheet (6) of expanded synthetic material and a first covering film (40) and a second covering film (41) are disposed on the opposite faces of a flat rectangular framework (10) to form a layered structure. The sheets (5), (6) and the covering films (40, 41) are longer and wider than the length and width of the frame (10) and than the dimensions of the mould cavities (25, 26) of a first die (15) and of a second die (16) of a press (20) between which the layered structure (1) is disposed. These dies (15, 16) are closed progressively to press the layered structure so that, in a first, lower-temperature cycle, the sheets (5, 6) partly penetrate the framework (10) and become sealed together along a peripheral edge (35) of the frame itself and in a second, higher-temperature cycle, the edges of the covering films (40, 41) are sealed together along a peripheral edge (35') alongside the edge (35) of the sheets (5, 6) which is already welded. The dies (15, 16) are subsequently opened and the layered-structure unitary body constituting a main part of a sun visor (61) is removed from the press (20). <IMAGE> |
