| 摘要 |
PROBLEM TO BE SOLVED: To accurately and easily regulate a sheet extrusion width by sandwiching an inner deckle bar between a pair of rolls, and forward or reversely rotating the roll, thereby laterally sliding the bar. SOLUTION: When a pair of rolls 6A, 6B are forward or reversely rotated, inner deckle bars 3A, 3B sandwiched between the rolls 6A and 6B are laterally slid at both ends of a discharge port 2 of the T-die 1 to regulate a sheet extrusion width. If the pair of the bars 3A, 3B are disposed at upper and lower positions, sealability of the bars 3A, 3B at the port 2 can be enhanced. One or both of the rolls 6A, 6B for sandwiching the bars 3A, 3B is, for example, rotatably supported to slide frames 8A, 8B, which are slidably supported to a support frame 7, and the frames 8A, 8B are pushed or pulled to be slid. Thus, a clamping force of the deckle 3A, 3B by the pair of the rolls 6A, 6B can be regulated. |
