| 摘要 |
<p>A hollow thread film cartridge, wherein a cartridge head and a lower ring are fixedly connected to each other through a plurality of bars or pipes, the hollow parts of the hollow thread film end parts on the cartridge head side are open, the hollow parts of the hollow thread film end parts on the lower ring side are sealed, a plurality of through-holes are provided in a fixedly connected layer on the lower ring side, and the through-holes are disposed in a hollow thread film bundle.</p> |
