| 摘要 |
Manufacturing of cardboard parts, stamped or not. The cardboard (1) is arranged between sheets (2, 3, 4, 5) made of flexible, heat-sealable and waterproof materials. Said complex is compressed in a heating mould which cuts, welds and folds the waterproof layers even on the edge, at (9). Application: manufacture of waterproofed cardboard parts, in a single press stroke, particularly for the car manufacturing industry. |
