| 摘要 |
<p>A process and an associated assembly 100 for supporting a porous media 24, such as an expanded polytetrafluoroethylene membrane (ePTFE), during a treatment which exposes the media to a fluid that modifies at least one property of the media 24. The assembly 100 includes a supporting core 58. The media 24 is wrapped in a plurality of layers about the core 58 to form a first roll 60 of the media. The assembly 100 includes first securement mechanisms 62 exerting diametrical pressure on the ends of the first roll 60 to prevent fluid flow axially out of the ends of the first roll 60. An additional amount of the media 24 is then wrapped in a plurality of layers about the first roll 60 to form a second roll 64 of the media 24. The assembly 100 includes second securement mechanisms 66 exerting diametrical pressure on the ends of the second roll 64 to prevent fluid flow axially out of the ends of the second roll 64. The assembly 100 may be part of equipment 20. Properties to be modified include hydrophobicity, oleophobicity and surface energy, and may involve treatment with for example supercritical carbon dioxide, heat or pressure.</p> |
