| 摘要 |
<p>In a lip drive part (100) for a T-die, a gap (?) between lips is narrowed by the action of a torque arm (11) on a flexible lip part (3) by the expansion of a push-side bellows (14). The gap (?) between the lips is widened by the action of the torque arm (11) on the flexible lip part (3) by the expansion of a pull-side bellows (16). The gap (?) between the lips can be thus narrowed and widened by the expansion of the push-side bellows (14) and the pull-side bellows (16), and therefore as compared to a case where a bellows is contracted by releasing compressed air supplied to the bellows or decreasing the pressure value of the compressed air as in the prior art, the gap (?) between the lips can be adjusted with higher accuracy and the reproducibility of the gap between the lips (the amount of deformation of the flexible lip part) can be increased.</p> |
