| 摘要 |
<p>PURPOSE:To prevent a first filter medium from running off and utilize adsorption capability of a filter medium to the full by disposing a second soft filter medium with meshes finer than the particle size of the first granular filter medium on both faces of the first filter medium. CONSTITUTION:A filter 3, consisting of a first active carbon granular medium 33, the upper and lower faces of which are held between second filter mediums 31 and 32 formed with non-woven cloths constituted with polyester or the like, is placed in an oil purifier case 30. The second filter medium 31 and 32 are soft formed with non-woven cloths with meshes finer than the particle size of the first filter medium 33. The peripheries of the second filter mediums 31 and 32 are caulked with the oil purifier case 30 to prevent the first filter medium 33 from running off.</p> |
