Title:
空気浄化用フィルタ素材及びその製造方法
Document Type and Number:
Japanese Patent JP2009521305
Kind Code:
A
Abstract:
The present invention relates to a filter material for cleaning air from contaminants which can be used for an extended period of time and a process for preparing the same. More particularly, it relates to a dual- or multi-layer filter material comprising at least one non-woven fabric layer with a density gradient located on the air- inlet side and a meltblown layer as a final layer located on the air-outlet side, wherein said meltblown layer comprises heterogeneous components having different melting points, and a process for preparing the same. The filter material for air cleaning according to the present invention does not have problems of low strength and fiber shedding which occur when a meltblown material is used as a final layer and as well it shows excellent post-processibility. The filter material of the invention which is excellent in the lamination pro- cessibility and bonding performance involved in the filter preparation process and filter efficiency can improve dust holding efficiency and dust holding capacity which are drawbacks in the conventional filter products, and thus can be used in various filtering apparatuses for vehicles or air ventilation units in buildings.
Inventors:
Guak Gubom
Rejemin
Moon Jae Jeong
Rejemin
Moon Jae Jeong
Application Number:
JP2008547109A
Publication Date:
June 04, 2009
Filing Date:
December 20, 2006
Export Citation:
Assignee:
Clean and Science Company Limited
International Classes:
B01D39/16
Attorney, Agent or Firm:
Miaki Kametani
Tetsuo Kanamoto
Koji Hagiwara
Tetsuo Kanamoto
Koji Hagiwara