| 摘要 |
<p>A repair method is disclosed for filter elements such as those used to filter polyester during the later stages of polyester manufacture in which the filter media comprises a particulate solid media arranged in a desired shape and maintained in that shape by a surrounding porous container that has filtration openings of a desired size. The method comprises filling undesirably large openings in the surrounding porous container that result from damage to the container and through which enlarged openings the particulate solid media would otherwise escape with a polymeric resin. The polymeric resin further comprises a resin with a glass transition temperature when cured that is at least greater than the melting point of polyester, and that has an absence of any chemical functional groups at temperatures at least as great as the melting point of polyester that would substantially react with polyester, the glycol precursors of polyester, the acid precursors of polyester, or the solvents useful in cleaning polyester from such filter elements.</p> |
