| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for molding a transparent thermoplastic resin to obtain a product having good optical characteristics, more precisely, a large- sized glazing product such as a car glazing product good in optical strain characteristics, and the obtained molded product. SOLUTION: A molded article having a multilayered structure reduced in optical strain is obtained by (1) a process for preliminarily mounting a transparent resin sheet on the surface of a mold cavity as a first layer and subsequently mounting the transparent resin sheet on the surface of a mold core as a second layer, (2) a process for filling the space between the first and second layers with a transparent thermoplastic resin (hereinbelow referred to as 'resin b1') as a third layer at an injection speed of 300 mm/sec or more and (3) a process for allowing compression force to act on the molded article having the multilayered structure consisting the first, second and third layers while cooling the molded article until capable of taking the same out of a mold.
|
