| 摘要 |
<p>A method of enhancing the filtration properties of PTFE felt The method includes the steps of providing a PTFE (polytetrafluoroethlyene) felt and subjecting the felt to one or more jets of water in order to further entangle the PTFE fibres and split the PTFE fibres into finer fibers. The felt may be a needled felt and the hydroentanglement step may involve the use of one or more nozzles arranged to direct the jets of water toward the felt. The felt may be manufactured by using the PTFE fibres on a supporting scrim and pushing a number of needles through the fibers and the scrim. The water jet(s) may be at a pressure of between 50 and 100 bar.</p> |
