| 摘要 |
<p>PURPOSE: To form a filter laminate by laminating a porous stretched polytetrafluoroethylene(PTFE) membrane having a specific air permeation rate on a felt including a web consisting of specific staple fibers. CONSTITUTION: The felt including the web consisting of the PTFE staple fibers is formed by a woven scrim made of the PTFE. The filter laminate is formed by laminating the porous stretched PTFE membrane having the air permeability under a 0.5 inch water gauge pressure of >=0.01 cubic feet/square feet and the felt described above. The laminate is adequately formed by fixing the membrane via an adhesive, such as fluorinated polymer, to the felt. The laminate body is adequately formed to a woven fabric form, filter bag form or the like.</p> |
