| 摘要 |
Filter cartridges are provided having a filter medium of glass fibers coated and bonded together by fluoroethylene polymer, such as polytetrafluoroethylene or polytrifluorochlorethylene, which are highly resistant to attack by corrosive fluids, and have a melting or softening temperature well above the liquefaction temperature of most thermoplastic polymers. These filter cartridges have a filter sheet of such material formed in a closed configuration, with end caps and a side seam seal sealed to the fluoroethylene polymer-coated filter sheet by way of a thermoplastic fluoroethylene polymer. |
