| 摘要 |
A feedblock for a film extruder used to produce a uniform, multiple layer web. The feedblock has a generally annular configuration, for receipt of a core material and a skin material. The feedblock has a varying radial dimension for passage of the skin material therethrough. After feeding the core material and the skin material through the feedblock and then a die, a flat web having at least three layers, uniform across the web width, is obtained. |
