| 摘要 |
A reel for windable tape-like material has generally parallel flanges connected by a hub on which the tape-like material is to be wound in a tape pack. One of the flanges has an air evacuator built into it which includes an air passage in that flange and a low pressure generator that interacts with air at the exterior of the flange as the reel is rotated, for producing a pressure at the exterior of the flange that is lower than the pressure at the interior region. An air flow thus is produced from the interior region to the exterior of the flange, so that less air is entrained between successive layers of the tape-like material as the tape-like material is wound on the hub. The packing density of the hub thus is increased.
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