| 摘要 |
<p>An extrusion die (10) for producing an extrudate of thermoplastic material. The extrusion die includes a die outlet through which a melt stream of the thermoplastic material is extruded, a feed entrance (22) in communication with a feed splitter (24) for dividing the thermoplastic material into a first portion and a second portion, and a cross flow manifold comprising: a first cross flow manifold section for receiving the first portion of the thermoplastic material, the first cross flow manifold section comprising a first passage (26a) having a first axis positioned within a first plane (50) of the extrusion die, a second passage in communication with the first passage and having a second axis positioned within a second plane (52) of the extrusion die, and a third passage in communication with the second passage and having a third axis positioned within a third plane of the extrusion die, the third passage in communication with the die outlet and a second cross flow manifold section for receiving the second portion of the thermoplastic material, the second cross flow manifold section comprising a first passage (28a) having a first axis positioned within the third plane (54) of the extrusion die, a second passage in communication with the first passage and having a second axis positioned within a fourth plane (56) of the extrusion die, and a third passage in communication with the second passage and having a third axis positioned within the first plane of the extrusion die, the third passage in communication with the die outlet.</p> |
