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US 2022/0054969 A1Published application
Air filter medium, filter pack, air filter unit, and methods for producing them
AssigneeDaikin Industries, Ltd.
InventorsToshihiro KANDA, Takashi KIMURA, Chizuru MURAKAMI, Takayuki HYOUDOU, Hitoshi NIINUMA
Life of this patent
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Abstract
An air filter medium includes a glass filter medium layer that includes a glass fiber. The glass filter medium layer has a protruding portion. The protruding portion undergoes a change in protrusion height of 70% or less when left to stand at an atmospheric temperature of 100° C. for one hour.
Claims19
An air filter medium comprising:
- a glass filter medium layer that includes a glass fiber, the glass filter medium layer having a protruding portion, and the protruding portion undergoing a change in protrusion height of 70% or less when left to stand at an atmospheric temperature of 100° C. for one hour.
A method for producing an air filter medium, comprising:
- preparing a sheet including a glass fiber, the sheet having a protruding portion in a liquid-containing state;
- and
- reducing a liquid content of the sheet having a protruding portion.
Dependencies are inferred from the claim text.