| 摘要 |
PROBLEM TO BE SOLVED: To provide a T-die which discharges molten plastic sheets in different temperature according to surfaces of sheet, and to provide an improved process using the T-die for producing various laminated materials e.g. a plastic foam board. SOLUTION: A T-die (1) allows controlling the temperature of two lips independently; by attaching independent heaters (3, 4) respectively on two die blocks (11, 12) which have respective lips (13, 14) on their tips and compose T-die (1), assembling the die blocks through a heat insulating material layer (5) and installing a controller for temperature control. COPYRIGHT: (C)2011,JPO&INPIT |
