| 摘要 |
PROBLEM TO BE SOLVED: To provide an extrusion molding apparatus 20 capable of deducing a film thickness after hardening before a molten resin right after extrusion is hardened, not affecting film forms of a molten state and a hardened state, and capable of controlling a resin film thickness.SOLUTION: The extrusion molding apparatus 20 for extruding a molten resin into a film form having adjusting devices 10 controlling a clearance distribution of lips of a T-die 1 plurally arranged in a width direction of a T-die 1 is provided with a flow velocimeter for measuring a flow velocity profile in a width direction of a molten resin 13 extruded from the lips 15 of the T-die 1, and a lip clearance control device 9 for adjusting a lip clearance in a width direction according to the measured flow velocity profile for every adjusting device 10 plurally arranged in a width direction of the T-die 1.SELECTED DRAWING: Figure 1 |
