The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 02, 2019
Filed:
Jul. 27, 2016
Daikin Industries, Ltd., Osaka, JP;
DAIKIN INDUSTRIES, LTD., Osaka, JP;
Abstract
Provided are a filter medium for an air filter capable of having extended life even when composed of embossable material. The filter medium () has a tensile elongation of 10% or greater, and includes a main collection layer () having a filing rate of 5% to 15%, a thickness of 0.35 mm to 0.70 mm, and a peak in a fiber diameter distribution at less than 1.0 μm and a peak at 1.0 μm or greater. An average fiber diameter of small fiber diameters of less than 1.0 μm is from 0.1 μm to less than 0.8 μm, and an average fiber diameter of large fiber diameters of 1.0 μm or greater is from 1.2 μm to less than 3.0 μm. A volume ratio of the fibers having the small fiber diameter to the fibers having the large fiber diameter is from 30:70 to 80:20.