| 摘要 |
An apparatus and a method for continuously stretching a web (10) of thermoplastic sheet into an arcuate form of desired curvature for the manufacturing of laminated windshields are disclosed. The apparatus comprises conventional heating rolls (1,2), but employs at least two adjustable multispoke pyramids, one hot setting pyramid (6) and one cooling pyramid (7). The pyramids are separated by a wall incorporating a folding bar (30). The method herein relates to the manufacture of cut shaped blanks wherein the hot setting and cooling steps are physically separated. The residual snap back after the hot setting step is released prior to the cooling step. <IMAGE> |
