Filter material take-up product for air filter

Gas separation – With means facilitating transportability or handling of...

Reexamination Certificate

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C055S524000, C242S610100, C242S610200

Reexamination Certificate

active

07547339

ABSTRACT:
A filter material take-up product and a paper winding core, which are free from secondary-contamination by an outgas while being transported or stocked. Irrespective of its application such as building air conditioner, an air cleaner or a semi-conductor factory, the amount of the outgas to be generated from the filter take-up product for the air filter can be kept at a negligible level. The filter take-up product for the air filter is produced by coating and wrapping the filter material for the air filter, as wound on the winding core, with a film wrapping material which is so made of phenolic compounds, carboxylate esters, phosphate ester or cyclic siloxance as to have an outgas generation in an amount of 100 ng/g or less by the dynamic head space method.

REFERENCES:
patent: 2271108 (1942-01-01), Wade
patent: 5593482 (1997-01-01), Dauber et al.
patent: 5620095 (1997-04-01), Delmore et al.
patent: 5845871 (1998-12-01), Lynch et al.
patent: 6352578 (2002-03-01), Sakata et al.
patent: 6506184 (2003-01-01), Villefrance
patent: 07-052976 (1995-02-01), None
patent: 3021861 (1995-12-01), None
patent: 09-187612 (1997-09-01), None
patent: 10-244112 (1998-09-01), None
patent: 11-253715 (1999-09-01), None
English Translation, Tadao Kobayashi, et al. Assembling, Packing and Performance Test Method of Air Filter, Assembling and Packing Method of Fan Filter Unit, CLean Room, and Local Equipment, Sep. 21, 1999.
English Translation, Kenshi Isobashi, Winding-In Fixture for Winding Bulky Nonwoven Fabric, Dec. 13, 1995.
International Preliminary Examination Report.

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