| 摘要 |
A filter medium includes at least one first fiber made from a first polymer selected for the chemical and high temperature stability properties needed for a particular operation and at least one second fiber made from a second polymer having a relatively higher glass transition temperature than the first polymer. The filter medium has a higher glass transition temperature than the first fiber, allowing the filtering media to withstand the temperature requirements of the operation, while retaining the chemical resistance of the first fiber. This is particularly useful for pleated filters that are highly temperature dependent, and in industrial baghouse operations where temperatures often exceed the operating range of the first polymers. A method for making the filter medium is also disclosed.
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