| 摘要 |
A die for film-blowing machine and the machine including such die. The die comprises a main body, an annular port mold and a central bore. The main body of the die comprises feed openings and a main flow channel which is located in the main body of the die and interconnects the feed opening and annular port mold. There are many feed openings, and each of them connects to one or more main flow channel. The main flow channel connected with different feed openings connects to different regions of the annular port mold. The regions distribute along the circumferential direction of the annular port mold, and the cross section of the regions is a fan link shape. The film-blowing machine includes the above die and several screw extruders. The mulching film made by the machine consists of at least two different materials which locate in the film side by side.
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