Abstract
Provided are a method for producing an air filter medium in which the deterioration of the functions during bonding can be suppressed, an air filter medium, a filter pack, and an air filter unit. The method for producing an air filter medium includes a first step of preparing a porous membrane and an air-permeable membrane and a second step of bonding the porous membrane and the air-permeable membrane using a hot-melt adhesive in a molten state. In the second step, a temperature of the air-permeable membrane is lower than a temperature of the hot-melt adhesive in the molten state.
Full Text
What is claimed is:
Provided are a method for producing an air filter medium in which the deterioration of the functions during bonding can be suppressed, an air filter medium, a filter pack, and an air filter unit. The method for producing an air filter medium includes a first step of preparing a porous membrane and an air-permeable membrane and a second step of bonding the porous membrane and the air-permeable membrane using a hot-melt adhesive in a molten state. In the second step, a temperature of the air-permeable membrane is lower than a temperature of the hot-melt adhesive in the molten state.
Timeline
Filed
02/27/2026Published
07/02/2026Granted
Not AvailableIPC Codes(3)
B01D 46/00:Filters or filtering processes specially modified for separating dispersed particles from gases or vapours (filtering elements B01D 24/00; filtering material B01D 39/00; their regeneration outside the filters B01D 41/00)
B01D 46/52:Particle separators, e.g. dust precipitators, using filters embodying folded material
B01D 69/10:Supported membranes; Membrane supports