| 摘要 |
<p>A die (10) for use in extrusion or coating processes includes an insert (28) that is releasably received in a chamber (20) of a die housing (12), and the insert (28) has one or more flow-controlling peripheral surfaces that extend in an arc about its central axis. In one embodiment of the invention, the insert (28) has ribs (44, 46) that separate the chamber into distinct parts for passage of two or more different fluid streams. In another embodiment, the insert is (28) rotatable about its central axis from a first position wherein fluid is discharged through an outlet passageway (24, 26, 27), and to a second position wherein the flow of fluid through the outlet passageway (24, 26, 27) is interrupted.</p> |
