The disclosed spinning nozzle member for manufacturing a cylindrical cartridge carbon filter comprises a nozzle body, a synthetic resin spinning part, a flowing air providing part, and a carbon spinning part, thereby enabling the cylindrical cartridge carbon filter to be continuously produced since a separate operation for filling a space between a core and an outer cover with carbon after the core and the outer cover are separately formed is not required.

The present invention relates to a filter medium comprising a substrate and a fine fiber layer on top of the substrate, wherein the substrate comprises a first layer comprising first fibers having a first average diameter and a first maximum fiber length; a second layer comprising second fibers having a second average diameter and a second maximum fiber length; and a third layer comprising third fibers having a third average diameter and a third maximum fiber length;
wherein the boundary area between the first and the second layer forms a first blended area comprising first and second fibers; and the boundary area between the second and the third layer forms a second blended area comprising second and third fibers; and wherein the first and the third average diameters are each larger than the second average diameter.

The present invention relates to a filter medium comprising a substrate and a fine fiber layer on top of the substrate, wherein the substrate comprises a first layer comprising first fibers having a first average diameter and a first maximum fiber length; a second layer comprising second fibers having a second average diameter and a second maximum fiber length; and a third layer comprising third fibers having a third average diameter and a third maximum fiber length;
wherein the boundary area between the first and the second layer forms a first blended area comprising first and second fibers; and the boundary area between the second and the third layer forms a second blended area comprising second and third fibers; and wherein the first and the third average diameters are each larger than the second average diameter.

A method for using a filtration system is provided. The filtration system can include a container, an inner cup, and a filter pad. The filtration system can be configured to remove undesirable impurities from liquid. For example, the filtration system can be configured to remove total polar molecules and lovibond color red from used cooking oil.

A method for using a filtration system is provided. The filtration system can include a container, an inner cup, and a filter pad. The filtration system can be configured to remove undesirable impurities from liquid. For example, the filtration system can be configured to remove total polar molecules and lovibond color red from used cooking oil.

A retaining material that can sufficiently maintain the function of retaining a pollution control element in a pollution control device at high temperature. In one aspect, the retaining material has a mat shape and contains inorganic fiber material, with the retaining material containing: a surface layer containing inorganic colloid particles; and an internal region positioned further to the inside than the surface layer, impregnated with inorganic colloid particles and organic binder; wherein the surface layer contains inorganic colloid particles at a higher concentration than the internal region; and the amount of inorganic colloid particles in the internal region is 1 mass % to 10 mass % based on the total mass of the retaining material.

A retaining material that can sufficiently maintain the function of retaining a pollution control element in a pollution control device at high temperature. In one aspect, the retaining material has a mat shape and contains inorganic fiber material, with the retaining material containing: a surface layer containing inorganic colloid particles; and an internal region positioned further to the inside than the surface layer, impregnated with inorganic colloid particles and organic binder; wherein the surface layer contains inorganic colloid particles at a higher concentration than the internal region; and the amount of inorganic colloid particles in the internal region is 1 mass % to 10 mass % based on the total mass of the retaining material.

An air filter including a filter support that supports metal-containing sorbent particles, the sorbent particles comprising a precursor that is a porous siliceous material that has been treated with a surface treatment agent, and a divalent metal incorporated into the siliceous precursor material.

An air filter including a filter support that supports metal-containing sorbent particles, the sorbent particles comprising a precursor that is a porous siliceous material that has been treated with a surface treatment agent, and a divalent metal incorporated into the siliceous precursor material.

A filter element and/or filter assembly such as for engine air filtration is provided that may include a filter housing, a pre-cleaner or cover, a primary filter element and optionally a secondary filter element. Different components may share a common seal to seal against unfiltered airflow. For example the secondary filter and the primary filter may use the same seal that may be carried by the primary filter. The secondary filter may also surround the primary filter.