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US 2023/0398478 A1Published application
Filter medium comprising a nonwoven electret
OwnerGeorg Geisberger, Christian Hanfstinglinventors
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Abstract
The present invention relates to a filter medium suitable for air filtration as well as related assemblies and methods.
Claims15
A filter medium, comprising at least one nonwoven electret,
- wherein the nonwoven electret comprises fibers made from a polymer material,
- wherein the polymer material comprises:
- (a) at least one thermoplastic resin,
- (b) at least one charge adjuvant, and
- (c) at least one nucleating agent,
- wherein the porosity of the nonwoven electret is ≥90% and ≤98%.
3 more elements
Dependencies are inferred from the claim text.