Method for producing air filter medium, air filter medium, filter pack, and air filter unit
AssigneeDaikin Industries, Ltd.
InventorsEmi KIRITANI, Shinichi CHAEN
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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.
Claims20
A method for producing an air filter medium, comprising:
- 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,
- wherein, 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.
An air filter medium comprising:
- a porous membrane;
- an air-permeable membrane;
- and
- a hot-melt adhesive for bonding the porous membrane and the air-permeable membrane,
- wherein a degree of deformation of fibers due to heat in a portion of the air-permeable membrane on a side opposite to the porous membrane is lower than a degree of deformation of fibers due to heat in a portion of the air-permeable membrane on a side of the porous membrane.
Dependencies are inferred from the claim text.