| 摘要 |
PROBLEM TO BE SOLVED: To provide a manufacturing method for easily obtaining a styrenic laminate excellent in appearance and transparency without causing the disturbance of a flow at the interface of resins even in a coextrusion method using a feed block die, and the styrenic laminate. SOLUTION: The method for manufacturing the styrenic laminate and the styrenic laminate are disclosed. In a multi-layer coextusion method for obtaining the styrenic laminate by letting styrenic polymers or polymer compositions containing this polymer merge in a die through an adaptor to obtain the styrenic laminate. The temperature of the adaptor and the temperature of the die are set so that the difference between the respective valuse of the melt flow rates of the styrenic polymers or the polymer compositions containing this polymer used in adjacent layers is 4 g/10 min or below and the difference between the storage elastic modulus by the measurement of dynamic viscoelasticity at the temperature of the adaptor of the resin used in the respective layers and the storage elastic modulus at the temperature of the die of the resin used in the respective layers is 1,500 Pa or below. COPYRIGHT: (C)2004,JPO&NCIPI |
